1 /*
2 * Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "asm/macroAssembler.hpp"
27 #include "asm/macroAssembler.inline.hpp"
28 #include "c1/c1_CodeStubs.hpp"
29 #include "c1/c1_Compilation.hpp"
30 #include "c1/c1_LIRAssembler.hpp"
31 #include "c1/c1_MacroAssembler.hpp"
32 #include "c1/c1_Runtime1.hpp"
33 #include "c1/c1_ValueStack.hpp"
34 #include "ci/ciArrayKlass.hpp"
35 #include "ci/ciInstance.hpp"
36 #include "compiler/oopMap.hpp"
37 #include "gc/shared/collectedHeap.hpp"
38 #include "gc/shared/gc_globals.hpp"
39 #include "nativeInst_x86.hpp"
40 #include "oops/objArrayKlass.hpp"
41 #include "runtime/frame.inline.hpp"
42 #include "runtime/safepointMechanism.hpp"
43 #include "runtime/sharedRuntime.hpp"
44 #include "runtime/stubRoutines.hpp"
45 #include "utilities/powerOfTwo.hpp"
46 #include "vmreg_x86.inline.hpp"
47
48
49 // These masks are used to provide 128-bit aligned bitmasks to the XMM
50 // instructions, to allow sign-masking or sign-bit flipping. They allow
51 // fast versions of NegF/NegD and AbsF/AbsD.
52
53 // Note: 'double' and 'long long' have 32-bits alignment on x86.
54 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) {
55 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address
56 // of 128-bits operands for SSE instructions.
57 jlong *operand = (jlong*)(((intptr_t)adr) & ((intptr_t)(~0xF)));
58 // Store the value to a 128-bits operand.
59 operand[0] = lo;
60 operand[1] = hi;
61 return operand;
62 }
63
64 // Buffer for 128-bits masks used by SSE instructions.
65 static jlong fp_signmask_pool[(4+1)*2]; // 4*128bits(data) + 128bits(alignment)
66
67 // Static initialization during VM startup.
68 static jlong *float_signmask_pool = double_quadword(&fp_signmask_pool[1*2], CONST64(0x7FFFFFFF7FFFFFFF), CONST64(0x7FFFFFFF7FFFFFFF));
69 static jlong *double_signmask_pool = double_quadword(&fp_signmask_pool[2*2], CONST64(0x7FFFFFFFFFFFFFFF), CONST64(0x7FFFFFFFFFFFFFFF));
70 static jlong *float_signflip_pool = double_quadword(&fp_signmask_pool[3*2], (jlong)UCONST64(0x8000000080000000), (jlong)UCONST64(0x8000000080000000));
71 static jlong *double_signflip_pool = double_quadword(&fp_signmask_pool[4*2], (jlong)UCONST64(0x8000000000000000), (jlong)UCONST64(0x8000000000000000));
72
73
74 NEEDS_CLEANUP // remove this definitions ?
75 const Register SYNC_header = rax; // synchronization header
76 const Register SHIFT_count = rcx; // where count for shift operations must be
77
78 #define __ _masm->
79
80
81 static void select_different_registers(Register preserve,
82 Register extra,
83 Register &tmp1,
84 Register &tmp2) {
85 if (tmp1 == preserve) {
86 assert_different_registers(tmp1, tmp2, extra);
87 tmp1 = extra;
88 } else if (tmp2 == preserve) {
89 assert_different_registers(tmp1, tmp2, extra);
90 tmp2 = extra;
91 }
92 assert_different_registers(preserve, tmp1, tmp2);
93 }
94
95
96
97 static void select_different_registers(Register preserve,
98 Register extra,
99 Register &tmp1,
100 Register &tmp2,
101 Register &tmp3) {
102 if (tmp1 == preserve) {
103 assert_different_registers(tmp1, tmp2, tmp3, extra);
104 tmp1 = extra;
105 } else if (tmp2 == preserve) {
106 assert_different_registers(tmp1, tmp2, tmp3, extra);
107 tmp2 = extra;
108 } else if (tmp3 == preserve) {
109 assert_different_registers(tmp1, tmp2, tmp3, extra);
110 tmp3 = extra;
111 }
112 assert_different_registers(preserve, tmp1, tmp2, tmp3);
113 }
114
115
116
117 bool LIR_Assembler::is_small_constant(LIR_Opr opr) {
118 if (opr->is_constant()) {
119 LIR_Const* constant = opr->as_constant_ptr();
120 switch (constant->type()) {
121 case T_INT: {
122 return true;
123 }
124
125 default:
126 return false;
127 }
128 }
129 return false;
130 }
131
132
133 LIR_Opr LIR_Assembler::receiverOpr() {
134 return FrameMap::receiver_opr;
135 }
136
137 LIR_Opr LIR_Assembler::osrBufferPointer() {
138 return FrameMap::as_pointer_opr(receiverOpr()->as_register());
139 }
140
141 //--------------fpu register translations-----------------------
142
143
144 address LIR_Assembler::float_constant(float f) {
145 address const_addr = __ float_constant(f);
146 if (const_addr == nullptr) {
147 bailout("const section overflow");
148 return __ code()->consts()->start();
149 } else {
150 return const_addr;
151 }
152 }
153
154
155 address LIR_Assembler::double_constant(double d) {
156 address const_addr = __ double_constant(d);
157 if (const_addr == nullptr) {
158 bailout("const section overflow");
159 return __ code()->consts()->start();
160 } else {
161 return const_addr;
162 }
163 }
164
165 #ifndef _LP64
166 void LIR_Assembler::fpop() {
167 __ fpop();
168 }
169
170 void LIR_Assembler::fxch(int i) {
171 __ fxch(i);
172 }
173
174 void LIR_Assembler::fld(int i) {
175 __ fld_s(i);
176 }
177
178 void LIR_Assembler::ffree(int i) {
179 __ ffree(i);
180 }
181 #endif // !_LP64
182
183 void LIR_Assembler::breakpoint() {
184 __ int3();
185 }
186
187 void LIR_Assembler::push(LIR_Opr opr) {
188 if (opr->is_single_cpu()) {
189 __ push_reg(opr->as_register());
190 } else if (opr->is_double_cpu()) {
191 NOT_LP64(__ push_reg(opr->as_register_hi()));
192 __ push_reg(opr->as_register_lo());
193 } else if (opr->is_stack()) {
194 __ push_addr(frame_map()->address_for_slot(opr->single_stack_ix()));
195 } else if (opr->is_constant()) {
196 LIR_Const* const_opr = opr->as_constant_ptr();
197 if (const_opr->type() == T_OBJECT) {
198 __ push_oop(const_opr->as_jobject(), rscratch1);
199 } else if (const_opr->type() == T_INT) {
200 __ push_jint(const_opr->as_jint());
201 } else {
202 ShouldNotReachHere();
203 }
204
205 } else {
206 ShouldNotReachHere();
207 }
208 }
209
210 void LIR_Assembler::pop(LIR_Opr opr) {
211 if (opr->is_single_cpu()) {
212 __ pop_reg(opr->as_register());
213 } else {
214 ShouldNotReachHere();
215 }
216 }
217
218 bool LIR_Assembler::is_literal_address(LIR_Address* addr) {
219 return addr->base()->is_illegal() && addr->index()->is_illegal();
220 }
221
222 //-------------------------------------------
223
224 Address LIR_Assembler::as_Address(LIR_Address* addr) {
225 return as_Address(addr, rscratch1);
226 }
227
228 Address LIR_Assembler::as_Address(LIR_Address* addr, Register tmp) {
229 if (addr->base()->is_illegal()) {
230 assert(addr->index()->is_illegal(), "must be illegal too");
231 AddressLiteral laddr((address)addr->disp(), relocInfo::none);
232 if (! __ reachable(laddr)) {
233 __ movptr(tmp, laddr.addr());
234 Address res(tmp, 0);
235 return res;
236 } else {
237 return __ as_Address(laddr);
238 }
239 }
240
241 Register base = addr->base()->as_pointer_register();
242
243 if (addr->index()->is_illegal()) {
244 return Address( base, addr->disp());
245 } else if (addr->index()->is_cpu_register()) {
246 Register index = addr->index()->as_pointer_register();
247 return Address(base, index, (Address::ScaleFactor) addr->scale(), addr->disp());
248 } else if (addr->index()->is_constant()) {
249 intptr_t addr_offset = (addr->index()->as_constant_ptr()->as_jint() << addr->scale()) + addr->disp();
250 assert(Assembler::is_simm32(addr_offset), "must be");
251
252 return Address(base, addr_offset);
253 } else {
254 Unimplemented();
255 return Address();
256 }
257 }
258
259
260 Address LIR_Assembler::as_Address_hi(LIR_Address* addr) {
261 Address base = as_Address(addr);
262 return Address(base._base, base._index, base._scale, base._disp + BytesPerWord);
263 }
264
265
266 Address LIR_Assembler::as_Address_lo(LIR_Address* addr) {
267 return as_Address(addr);
268 }
269
270
271 void LIR_Assembler::osr_entry() {
272 offsets()->set_value(CodeOffsets::OSR_Entry, code_offset());
273 BlockBegin* osr_entry = compilation()->hir()->osr_entry();
274 ValueStack* entry_state = osr_entry->state();
275 int number_of_locks = entry_state->locks_size();
276
277 // we jump here if osr happens with the interpreter
278 // state set up to continue at the beginning of the
279 // loop that triggered osr - in particular, we have
280 // the following registers setup:
281 //
282 // rcx: osr buffer
283 //
284
285 // build frame
286 ciMethod* m = compilation()->method();
287 __ build_frame(initial_frame_size_in_bytes(), bang_size_in_bytes());
288
289 // OSR buffer is
290 //
291 // locals[nlocals-1..0]
292 // monitors[0..number_of_locks]
293 //
294 // locals is a direct copy of the interpreter frame so in the osr buffer
295 // so first slot in the local array is the last local from the interpreter
296 // and last slot is local[0] (receiver) from the interpreter
297 //
298 // Similarly with locks. The first lock slot in the osr buffer is the nth lock
299 // from the interpreter frame, the nth lock slot in the osr buffer is 0th lock
300 // in the interpreter frame (the method lock if a sync method)
301
302 // Initialize monitors in the compiled activation.
303 // rcx: pointer to osr buffer
304 //
305 // All other registers are dead at this point and the locals will be
306 // copied into place by code emitted in the IR.
307
308 Register OSR_buf = osrBufferPointer()->as_pointer_register();
309 { assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below");
310 int monitor_offset = BytesPerWord * method()->max_locals() +
311 (BasicObjectLock::size() * BytesPerWord) * (number_of_locks - 1);
312 // SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in
313 // the OSR buffer using 2 word entries: first the lock and then
314 // the oop.
315 for (int i = 0; i < number_of_locks; i++) {
316 int slot_offset = monitor_offset - ((i * 2) * BytesPerWord);
317 #ifdef ASSERT
318 // verify the interpreter's monitor has a non-null object
319 {
320 Label L;
321 __ cmpptr(Address(OSR_buf, slot_offset + 1*BytesPerWord), NULL_WORD);
322 __ jcc(Assembler::notZero, L);
323 __ stop("locked object is null");
324 __ bind(L);
325 }
326 #endif
327 __ movptr(rbx, Address(OSR_buf, slot_offset + 0));
328 __ movptr(frame_map()->address_for_monitor_lock(i), rbx);
329 __ movptr(rbx, Address(OSR_buf, slot_offset + 1*BytesPerWord));
330 __ movptr(frame_map()->address_for_monitor_object(i), rbx);
331 }
332 }
333 }
334
335
336 // inline cache check; done before the frame is built.
337 int LIR_Assembler::check_icache() {
338 return __ ic_check(CodeEntryAlignment);
339 }
340
341 void LIR_Assembler::clinit_barrier(ciMethod* method) {
342 assert(VM_Version::supports_fast_class_init_checks(), "sanity");
343 assert(!method->holder()->is_not_initialized(), "initialization should have been started");
344
345 Label L_skip_barrier;
346 Register klass = rscratch1;
347 Register thread = LP64_ONLY( r15_thread ) NOT_LP64( noreg );
348 assert(thread != noreg, "x86_32 not implemented");
349
350 __ mov_metadata(klass, method->holder()->constant_encoding());
351 __ clinit_barrier(klass, thread, &L_skip_barrier /*L_fast_path*/);
352
353 __ jump(RuntimeAddress(SharedRuntime::get_handle_wrong_method_stub()));
354
355 __ bind(L_skip_barrier);
356 }
357
358 void LIR_Assembler::jobject2reg_with_patching(Register reg, CodeEmitInfo* info) {
359 jobject o = nullptr;
360 PatchingStub* patch = new PatchingStub(_masm, patching_id(info));
361 __ movoop(reg, o);
362 patching_epilog(patch, lir_patch_normal, reg, info);
363 }
364
365 void LIR_Assembler::klass2reg_with_patching(Register reg, CodeEmitInfo* info) {
366 Metadata* o = nullptr;
367 PatchingStub* patch = new PatchingStub(_masm, PatchingStub::load_klass_id);
368 __ mov_metadata(reg, o);
369 patching_epilog(patch, lir_patch_normal, reg, info);
370 }
371
372 // This specifies the rsp decrement needed to build the frame
373 int LIR_Assembler::initial_frame_size_in_bytes() const {
374 // if rounding, must let FrameMap know!
375
376 // The frame_map records size in slots (32bit word)
377
378 // subtract two words to account for return address and link
379 return (frame_map()->framesize() - (2*VMRegImpl::slots_per_word)) * VMRegImpl::stack_slot_size;
380 }
381
382
383 int LIR_Assembler::emit_exception_handler() {
384 // generate code for exception handler
385 address handler_base = __ start_a_stub(exception_handler_size());
386 if (handler_base == nullptr) {
387 // not enough space left for the handler
388 bailout("exception handler overflow");
389 return -1;
390 }
391
392 int offset = code_offset();
393
394 // the exception oop and pc are in rax, and rdx
395 // no other registers need to be preserved, so invalidate them
396 __ invalidate_registers(false, true, true, false, true, true);
397
398 // check that there is really an exception
399 __ verify_not_null_oop(rax);
400
401 // search an exception handler (rax: exception oop, rdx: throwing pc)
402 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::handle_exception_from_callee_id)));
403 __ should_not_reach_here();
404 guarantee(code_offset() - offset <= exception_handler_size(), "overflow");
405 __ end_a_stub();
406
407 return offset;
408 }
409
410
411 // Emit the code to remove the frame from the stack in the exception
412 // unwind path.
413 int LIR_Assembler::emit_unwind_handler() {
414 #ifndef PRODUCT
415 if (CommentedAssembly) {
416 _masm->block_comment("Unwind handler");
417 }
418 #endif
419
420 int offset = code_offset();
421
422 // Fetch the exception from TLS and clear out exception related thread state
423 Register thread = NOT_LP64(rsi) LP64_ONLY(r15_thread);
424 NOT_LP64(__ get_thread(thread));
425 __ movptr(rax, Address(thread, JavaThread::exception_oop_offset()));
426 __ movptr(Address(thread, JavaThread::exception_oop_offset()), NULL_WORD);
427 __ movptr(Address(thread, JavaThread::exception_pc_offset()), NULL_WORD);
428
429 __ bind(_unwind_handler_entry);
430 __ verify_not_null_oop(rax);
431 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
432 __ mov(rbx, rax); // Preserve the exception (rbx is always callee-saved)
433 }
434
435 // Perform needed unlocking
436 MonitorExitStub* stub = nullptr;
437 if (method()->is_synchronized()) {
438 monitor_address(0, FrameMap::rax_opr);
439 stub = new MonitorExitStub(FrameMap::rax_opr, true, 0);
440 if (LockingMode == LM_MONITOR) {
441 __ jmp(*stub->entry());
442 } else {
443 __ unlock_object(rdi, rsi, rax, *stub->entry());
444 }
445 __ bind(*stub->continuation());
446 }
447
448 if (compilation()->env()->dtrace_method_probes()) {
449 #ifdef _LP64
450 __ mov(rdi, r15_thread);
451 __ mov_metadata(rsi, method()->constant_encoding());
452 #else
453 __ get_thread(rax);
454 __ movptr(Address(rsp, 0), rax);
455 __ mov_metadata(Address(rsp, sizeof(void*)), method()->constant_encoding(), noreg);
456 #endif
457 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit)));
458 }
459
460 if (method()->is_synchronized() || compilation()->env()->dtrace_method_probes()) {
461 __ mov(rax, rbx); // Restore the exception
462 }
463
464 // remove the activation and dispatch to the unwind handler
465 __ remove_frame(initial_frame_size_in_bytes());
466 __ jump(RuntimeAddress(Runtime1::entry_for(Runtime1::unwind_exception_id)));
467
468 // Emit the slow path assembly
469 if (stub != nullptr) {
470 stub->emit_code(this);
471 }
472
473 return offset;
474 }
475
476
477 int LIR_Assembler::emit_deopt_handler() {
478 // generate code for exception handler
479 address handler_base = __ start_a_stub(deopt_handler_size());
480 if (handler_base == nullptr) {
481 // not enough space left for the handler
482 bailout("deopt handler overflow");
483 return -1;
484 }
485
486 int offset = code_offset();
487 InternalAddress here(__ pc());
488
489 __ pushptr(here.addr(), rscratch1);
490 __ jump(RuntimeAddress(SharedRuntime::deopt_blob()->unpack()));
491 guarantee(code_offset() - offset <= deopt_handler_size(), "overflow");
492 __ end_a_stub();
493
494 return offset;
495 }
496
497 void LIR_Assembler::return_op(LIR_Opr result, C1SafepointPollStub* code_stub) {
498 assert(result->is_illegal() || !result->is_single_cpu() || result->as_register() == rax, "word returns are in rax,");
499 if (!result->is_illegal() && result->is_float_kind() && !result->is_xmm_register()) {
500 assert(result->fpu() == 0, "result must already be on TOS");
501 }
502
503 // Pop the stack before the safepoint code
504 __ remove_frame(initial_frame_size_in_bytes());
505
506 if (StackReservedPages > 0 && compilation()->has_reserved_stack_access()) {
507 __ reserved_stack_check();
508 }
509
510 // Note: we do not need to round double result; float result has the right precision
511 // the poll sets the condition code, but no data registers
512
513 #ifdef _LP64
514 const Register thread = r15_thread;
515 #else
516 const Register thread = rbx;
517 __ get_thread(thread);
518 #endif
519 code_stub->set_safepoint_offset(__ offset());
520 __ relocate(relocInfo::poll_return_type);
521 __ safepoint_poll(*code_stub->entry(), thread, true /* at_return */, true /* in_nmethod */);
522 __ ret(0);
523 }
524
525
526 int LIR_Assembler::safepoint_poll(LIR_Opr tmp, CodeEmitInfo* info) {
527 guarantee(info != nullptr, "Shouldn't be null");
528 int offset = __ offset();
529 #ifdef _LP64
530 const Register poll_addr = rscratch1;
531 __ movptr(poll_addr, Address(r15_thread, JavaThread::polling_page_offset()));
532 #else
533 assert(tmp->is_cpu_register(), "needed");
534 const Register poll_addr = tmp->as_register();
535 __ get_thread(poll_addr);
536 __ movptr(poll_addr, Address(poll_addr, in_bytes(JavaThread::polling_page_offset())));
537 #endif
538 add_debug_info_for_branch(info);
539 __ relocate(relocInfo::poll_type);
540 address pre_pc = __ pc();
541 __ testl(rax, Address(poll_addr, 0));
542 address post_pc = __ pc();
543 guarantee(pointer_delta(post_pc, pre_pc, 1) == 2 LP64_ONLY(+1), "must be exact length");
544 return offset;
545 }
546
547
548 void LIR_Assembler::move_regs(Register from_reg, Register to_reg) {
549 if (from_reg != to_reg) __ mov(to_reg, from_reg);
550 }
551
552 void LIR_Assembler::swap_reg(Register a, Register b) {
553 __ xchgptr(a, b);
554 }
555
556
557 void LIR_Assembler::const2reg(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) {
558 assert(src->is_constant(), "should not call otherwise");
559 assert(dest->is_register(), "should not call otherwise");
560 LIR_Const* c = src->as_constant_ptr();
561
562 switch (c->type()) {
563 case T_INT: {
564 assert(patch_code == lir_patch_none, "no patching handled here");
565 __ movl(dest->as_register(), c->as_jint());
566 break;
567 }
568
569 case T_ADDRESS: {
570 assert(patch_code == lir_patch_none, "no patching handled here");
571 __ movptr(dest->as_register(), c->as_jint());
572 break;
573 }
574
575 case T_LONG: {
576 assert(patch_code == lir_patch_none, "no patching handled here");
577 #ifdef _LP64
578 __ movptr(dest->as_register_lo(), (intptr_t)c->as_jlong());
579 #else
580 __ movptr(dest->as_register_lo(), c->as_jint_lo());
581 __ movptr(dest->as_register_hi(), c->as_jint_hi());
582 #endif // _LP64
583 break;
584 }
585
586 case T_OBJECT: {
587 if (patch_code != lir_patch_none) {
588 jobject2reg_with_patching(dest->as_register(), info);
589 } else {
590 __ movoop(dest->as_register(), c->as_jobject());
591 }
592 break;
593 }
594
595 case T_METADATA: {
596 if (patch_code != lir_patch_none) {
597 klass2reg_with_patching(dest->as_register(), info);
598 } else {
599 __ mov_metadata(dest->as_register(), c->as_metadata());
600 }
601 break;
602 }
603
604 case T_FLOAT: {
605 if (dest->is_single_xmm()) {
606 if (LP64_ONLY(UseAVX <= 2 &&) c->is_zero_float()) {
607 __ xorps(dest->as_xmm_float_reg(), dest->as_xmm_float_reg());
608 } else {
609 __ movflt(dest->as_xmm_float_reg(),
610 InternalAddress(float_constant(c->as_jfloat())));
611 }
612 } else {
613 #ifndef _LP64
614 assert(dest->is_single_fpu(), "must be");
615 assert(dest->fpu_regnr() == 0, "dest must be TOS");
616 if (c->is_zero_float()) {
617 __ fldz();
618 } else if (c->is_one_float()) {
619 __ fld1();
620 } else {
621 __ fld_s (InternalAddress(float_constant(c->as_jfloat())));
622 }
623 #else
624 ShouldNotReachHere();
625 #endif // !_LP64
626 }
627 break;
628 }
629
630 case T_DOUBLE: {
631 if (dest->is_double_xmm()) {
632 if (LP64_ONLY(UseAVX <= 2 &&) c->is_zero_double()) {
633 __ xorpd(dest->as_xmm_double_reg(), dest->as_xmm_double_reg());
634 } else {
635 __ movdbl(dest->as_xmm_double_reg(),
636 InternalAddress(double_constant(c->as_jdouble())));
637 }
638 } else {
639 #ifndef _LP64
640 assert(dest->is_double_fpu(), "must be");
641 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
642 if (c->is_zero_double()) {
643 __ fldz();
644 } else if (c->is_one_double()) {
645 __ fld1();
646 } else {
647 __ fld_d (InternalAddress(double_constant(c->as_jdouble())));
648 }
649 #else
650 ShouldNotReachHere();
651 #endif // !_LP64
652 }
653 break;
654 }
655
656 default:
657 ShouldNotReachHere();
658 }
659 }
660
661 void LIR_Assembler::const2stack(LIR_Opr src, LIR_Opr dest) {
662 assert(src->is_constant(), "should not call otherwise");
663 assert(dest->is_stack(), "should not call otherwise");
664 LIR_Const* c = src->as_constant_ptr();
665
666 switch (c->type()) {
667 case T_INT: // fall through
668 case T_FLOAT:
669 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits());
670 break;
671
672 case T_ADDRESS:
673 __ movptr(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jint_bits());
674 break;
675
676 case T_OBJECT:
677 __ movoop(frame_map()->address_for_slot(dest->single_stack_ix()), c->as_jobject(), rscratch1);
678 break;
679
680 case T_LONG: // fall through
681 case T_DOUBLE:
682 #ifdef _LP64
683 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
684 lo_word_offset_in_bytes),
685 (intptr_t)c->as_jlong_bits(),
686 rscratch1);
687 #else
688 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
689 lo_word_offset_in_bytes), c->as_jint_lo_bits());
690 __ movptr(frame_map()->address_for_slot(dest->double_stack_ix(),
691 hi_word_offset_in_bytes), c->as_jint_hi_bits());
692 #endif // _LP64
693 break;
694
695 default:
696 ShouldNotReachHere();
697 }
698 }
699
700 void LIR_Assembler::const2mem(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide) {
701 assert(src->is_constant(), "should not call otherwise");
702 assert(dest->is_address(), "should not call otherwise");
703 LIR_Const* c = src->as_constant_ptr();
704 LIR_Address* addr = dest->as_address_ptr();
705
706 int null_check_here = code_offset();
707 switch (type) {
708 case T_INT: // fall through
709 case T_FLOAT:
710 __ movl(as_Address(addr), c->as_jint_bits());
711 break;
712
713 case T_ADDRESS:
714 __ movptr(as_Address(addr), c->as_jint_bits());
715 break;
716
717 case T_OBJECT: // fall through
718 case T_ARRAY:
719 if (c->as_jobject() == nullptr) {
720 if (UseCompressedOops && !wide) {
721 __ movl(as_Address(addr), NULL_WORD);
722 } else {
723 #ifdef _LP64
724 __ xorptr(rscratch1, rscratch1);
725 null_check_here = code_offset();
726 __ movptr(as_Address(addr), rscratch1);
727 #else
728 __ movptr(as_Address(addr), NULL_WORD);
729 #endif
730 }
731 } else {
732 if (is_literal_address(addr)) {
733 ShouldNotReachHere();
734 __ movoop(as_Address(addr, noreg), c->as_jobject(), rscratch1);
735 } else {
736 #ifdef _LP64
737 __ movoop(rscratch1, c->as_jobject());
738 if (UseCompressedOops && !wide) {
739 __ encode_heap_oop(rscratch1);
740 null_check_here = code_offset();
741 __ movl(as_Address_lo(addr), rscratch1);
742 } else {
743 null_check_here = code_offset();
744 __ movptr(as_Address_lo(addr), rscratch1);
745 }
746 #else
747 __ movoop(as_Address(addr), c->as_jobject(), noreg);
748 #endif
749 }
750 }
751 break;
752
753 case T_LONG: // fall through
754 case T_DOUBLE:
755 #ifdef _LP64
756 if (is_literal_address(addr)) {
757 ShouldNotReachHere();
758 __ movptr(as_Address(addr, r15_thread), (intptr_t)c->as_jlong_bits());
759 } else {
760 __ movptr(r10, (intptr_t)c->as_jlong_bits());
761 null_check_here = code_offset();
762 __ movptr(as_Address_lo(addr), r10);
763 }
764 #else
765 // Always reachable in 32bit so this doesn't produce useless move literal
766 __ movptr(as_Address_hi(addr), c->as_jint_hi_bits());
767 __ movptr(as_Address_lo(addr), c->as_jint_lo_bits());
768 #endif // _LP64
769 break;
770
771 case T_BOOLEAN: // fall through
772 case T_BYTE:
773 __ movb(as_Address(addr), c->as_jint() & 0xFF);
774 break;
775
776 case T_CHAR: // fall through
777 case T_SHORT:
778 __ movw(as_Address(addr), c->as_jint() & 0xFFFF);
779 break;
780
781 default:
782 ShouldNotReachHere();
783 };
784
785 if (info != nullptr) {
786 add_debug_info_for_null_check(null_check_here, info);
787 }
788 }
789
790
791 void LIR_Assembler::reg2reg(LIR_Opr src, LIR_Opr dest) {
792 assert(src->is_register(), "should not call otherwise");
793 assert(dest->is_register(), "should not call otherwise");
794
795 // move between cpu-registers
796 if (dest->is_single_cpu()) {
797 #ifdef _LP64
798 if (src->type() == T_LONG) {
799 // Can do LONG -> OBJECT
800 move_regs(src->as_register_lo(), dest->as_register());
801 return;
802 }
803 #endif
804 assert(src->is_single_cpu(), "must match");
805 if (src->type() == T_OBJECT) {
806 __ verify_oop(src->as_register());
807 }
808 move_regs(src->as_register(), dest->as_register());
809
810 } else if (dest->is_double_cpu()) {
811 #ifdef _LP64
812 if (is_reference_type(src->type())) {
813 // Surprising to me but we can see move of a long to t_object
814 __ verify_oop(src->as_register());
815 move_regs(src->as_register(), dest->as_register_lo());
816 return;
817 }
818 #endif
819 assert(src->is_double_cpu(), "must match");
820 Register f_lo = src->as_register_lo();
821 Register f_hi = src->as_register_hi();
822 Register t_lo = dest->as_register_lo();
823 Register t_hi = dest->as_register_hi();
824 #ifdef _LP64
825 assert(f_hi == f_lo, "must be same");
826 assert(t_hi == t_lo, "must be same");
827 move_regs(f_lo, t_lo);
828 #else
829 assert(f_lo != f_hi && t_lo != t_hi, "invalid register allocation");
830
831
832 if (f_lo == t_hi && f_hi == t_lo) {
833 swap_reg(f_lo, f_hi);
834 } else if (f_hi == t_lo) {
835 assert(f_lo != t_hi, "overwriting register");
836 move_regs(f_hi, t_hi);
837 move_regs(f_lo, t_lo);
838 } else {
839 assert(f_hi != t_lo, "overwriting register");
840 move_regs(f_lo, t_lo);
841 move_regs(f_hi, t_hi);
842 }
843 #endif // LP64
844
845 #ifndef _LP64
846 // special moves from fpu-register to xmm-register
847 // necessary for method results
848 } else if (src->is_single_xmm() && !dest->is_single_xmm()) {
849 __ movflt(Address(rsp, 0), src->as_xmm_float_reg());
850 __ fld_s(Address(rsp, 0));
851 } else if (src->is_double_xmm() && !dest->is_double_xmm()) {
852 __ movdbl(Address(rsp, 0), src->as_xmm_double_reg());
853 __ fld_d(Address(rsp, 0));
854 } else if (dest->is_single_xmm() && !src->is_single_xmm()) {
855 __ fstp_s(Address(rsp, 0));
856 __ movflt(dest->as_xmm_float_reg(), Address(rsp, 0));
857 } else if (dest->is_double_xmm() && !src->is_double_xmm()) {
858 __ fstp_d(Address(rsp, 0));
859 __ movdbl(dest->as_xmm_double_reg(), Address(rsp, 0));
860 #endif // !_LP64
861
862 // move between xmm-registers
863 } else if (dest->is_single_xmm()) {
864 assert(src->is_single_xmm(), "must match");
865 __ movflt(dest->as_xmm_float_reg(), src->as_xmm_float_reg());
866 } else if (dest->is_double_xmm()) {
867 assert(src->is_double_xmm(), "must match");
868 __ movdbl(dest->as_xmm_double_reg(), src->as_xmm_double_reg());
869
870 #ifndef _LP64
871 // move between fpu-registers (no instruction necessary because of fpu-stack)
872 } else if (dest->is_single_fpu() || dest->is_double_fpu()) {
873 assert(src->is_single_fpu() || src->is_double_fpu(), "must match");
874 assert(src->fpu() == dest->fpu(), "currently should be nothing to do");
875 #endif // !_LP64
876
877 } else {
878 ShouldNotReachHere();
879 }
880 }
881
882 void LIR_Assembler::reg2stack(LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack) {
883 assert(src->is_register(), "should not call otherwise");
884 assert(dest->is_stack(), "should not call otherwise");
885
886 if (src->is_single_cpu()) {
887 Address dst = frame_map()->address_for_slot(dest->single_stack_ix());
888 if (is_reference_type(type)) {
889 __ verify_oop(src->as_register());
890 __ movptr (dst, src->as_register());
891 } else if (type == T_METADATA || type == T_ADDRESS) {
892 __ movptr (dst, src->as_register());
893 } else {
894 __ movl (dst, src->as_register());
895 }
896
897 } else if (src->is_double_cpu()) {
898 Address dstLO = frame_map()->address_for_slot(dest->double_stack_ix(), lo_word_offset_in_bytes);
899 Address dstHI = frame_map()->address_for_slot(dest->double_stack_ix(), hi_word_offset_in_bytes);
900 __ movptr (dstLO, src->as_register_lo());
901 NOT_LP64(__ movptr (dstHI, src->as_register_hi()));
902
903 } else if (src->is_single_xmm()) {
904 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix());
905 __ movflt(dst_addr, src->as_xmm_float_reg());
906
907 } else if (src->is_double_xmm()) {
908 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix());
909 __ movdbl(dst_addr, src->as_xmm_double_reg());
910
911 #ifndef _LP64
912 } else if (src->is_single_fpu()) {
913 assert(src->fpu_regnr() == 0, "argument must be on TOS");
914 Address dst_addr = frame_map()->address_for_slot(dest->single_stack_ix());
915 if (pop_fpu_stack) __ fstp_s (dst_addr);
916 else __ fst_s (dst_addr);
917
918 } else if (src->is_double_fpu()) {
919 assert(src->fpu_regnrLo() == 0, "argument must be on TOS");
920 Address dst_addr = frame_map()->address_for_slot(dest->double_stack_ix());
921 if (pop_fpu_stack) __ fstp_d (dst_addr);
922 else __ fst_d (dst_addr);
923 #endif // !_LP64
924
925 } else {
926 ShouldNotReachHere();
927 }
928 }
929
930
931 void LIR_Assembler::reg2mem(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool wide) {
932 LIR_Address* to_addr = dest->as_address_ptr();
933 PatchingStub* patch = nullptr;
934 Register compressed_src = rscratch1;
935
936 if (is_reference_type(type)) {
937 __ verify_oop(src->as_register());
938 #ifdef _LP64
939 if (UseCompressedOops && !wide) {
940 __ movptr(compressed_src, src->as_register());
941 __ encode_heap_oop(compressed_src);
942 if (patch_code != lir_patch_none) {
943 info->oop_map()->set_narrowoop(compressed_src->as_VMReg());
944 }
945 }
946 #endif
947 }
948
949 if (patch_code != lir_patch_none) {
950 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
951 Address toa = as_Address(to_addr);
952 assert(toa.disp() != 0, "must have");
953 }
954
955 int null_check_here = code_offset();
956 switch (type) {
957 case T_FLOAT: {
958 #ifdef _LP64
959 assert(src->is_single_xmm(), "not a float");
960 __ movflt(as_Address(to_addr), src->as_xmm_float_reg());
961 #else
962 if (src->is_single_xmm()) {
963 __ movflt(as_Address(to_addr), src->as_xmm_float_reg());
964 } else {
965 assert(src->is_single_fpu(), "must be");
966 assert(src->fpu_regnr() == 0, "argument must be on TOS");
967 if (pop_fpu_stack) __ fstp_s(as_Address(to_addr));
968 else __ fst_s (as_Address(to_addr));
969 }
970 #endif // _LP64
971 break;
972 }
973
974 case T_DOUBLE: {
975 #ifdef _LP64
976 assert(src->is_double_xmm(), "not a double");
977 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg());
978 #else
979 if (src->is_double_xmm()) {
980 __ movdbl(as_Address(to_addr), src->as_xmm_double_reg());
981 } else {
982 assert(src->is_double_fpu(), "must be");
983 assert(src->fpu_regnrLo() == 0, "argument must be on TOS");
984 if (pop_fpu_stack) __ fstp_d(as_Address(to_addr));
985 else __ fst_d (as_Address(to_addr));
986 }
987 #endif // _LP64
988 break;
989 }
990
991 case T_ARRAY: // fall through
992 case T_OBJECT: // fall through
993 if (UseCompressedOops && !wide) {
994 __ movl(as_Address(to_addr), compressed_src);
995 } else {
996 __ movptr(as_Address(to_addr), src->as_register());
997 }
998 break;
999 case T_METADATA:
1000 // We get here to store a method pointer to the stack to pass to
1001 // a dtrace runtime call. This can't work on 64 bit with
1002 // compressed klass ptrs: T_METADATA can be a compressed klass
1003 // ptr or a 64 bit method pointer.
1004 LP64_ONLY(ShouldNotReachHere());
1005 __ movptr(as_Address(to_addr), src->as_register());
1006 break;
1007 case T_ADDRESS:
1008 __ movptr(as_Address(to_addr), src->as_register());
1009 break;
1010 case T_INT:
1011 __ movl(as_Address(to_addr), src->as_register());
1012 break;
1013
1014 case T_LONG: {
1015 Register from_lo = src->as_register_lo();
1016 Register from_hi = src->as_register_hi();
1017 #ifdef _LP64
1018 __ movptr(as_Address_lo(to_addr), from_lo);
1019 #else
1020 Register base = to_addr->base()->as_register();
1021 Register index = noreg;
1022 if (to_addr->index()->is_register()) {
1023 index = to_addr->index()->as_register();
1024 }
1025 if (base == from_lo || index == from_lo) {
1026 assert(base != from_hi, "can't be");
1027 assert(index == noreg || (index != base && index != from_hi), "can't handle this");
1028 __ movl(as_Address_hi(to_addr), from_hi);
1029 if (patch != nullptr) {
1030 patching_epilog(patch, lir_patch_high, base, info);
1031 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1032 patch_code = lir_patch_low;
1033 }
1034 __ movl(as_Address_lo(to_addr), from_lo);
1035 } else {
1036 assert(index == noreg || (index != base && index != from_lo), "can't handle this");
1037 __ movl(as_Address_lo(to_addr), from_lo);
1038 if (patch != nullptr) {
1039 patching_epilog(patch, lir_patch_low, base, info);
1040 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1041 patch_code = lir_patch_high;
1042 }
1043 __ movl(as_Address_hi(to_addr), from_hi);
1044 }
1045 #endif // _LP64
1046 break;
1047 }
1048
1049 case T_BYTE: // fall through
1050 case T_BOOLEAN: {
1051 Register src_reg = src->as_register();
1052 Address dst_addr = as_Address(to_addr);
1053 assert(VM_Version::is_P6() || src_reg->has_byte_register(), "must use byte registers if not P6");
1054 __ movb(dst_addr, src_reg);
1055 break;
1056 }
1057
1058 case T_CHAR: // fall through
1059 case T_SHORT:
1060 __ movw(as_Address(to_addr), src->as_register());
1061 break;
1062
1063 default:
1064 ShouldNotReachHere();
1065 }
1066 if (info != nullptr) {
1067 add_debug_info_for_null_check(null_check_here, info);
1068 }
1069
1070 if (patch_code != lir_patch_none) {
1071 patching_epilog(patch, patch_code, to_addr->base()->as_register(), info);
1072 }
1073 }
1074
1075
1076 void LIR_Assembler::stack2reg(LIR_Opr src, LIR_Opr dest, BasicType type) {
1077 assert(src->is_stack(), "should not call otherwise");
1078 assert(dest->is_register(), "should not call otherwise");
1079
1080 if (dest->is_single_cpu()) {
1081 if (is_reference_type(type)) {
1082 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1083 __ verify_oop(dest->as_register());
1084 } else if (type == T_METADATA || type == T_ADDRESS) {
1085 __ movptr(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1086 } else {
1087 __ movl(dest->as_register(), frame_map()->address_for_slot(src->single_stack_ix()));
1088 }
1089
1090 } else if (dest->is_double_cpu()) {
1091 Address src_addr_LO = frame_map()->address_for_slot(src->double_stack_ix(), lo_word_offset_in_bytes);
1092 Address src_addr_HI = frame_map()->address_for_slot(src->double_stack_ix(), hi_word_offset_in_bytes);
1093 __ movptr(dest->as_register_lo(), src_addr_LO);
1094 NOT_LP64(__ movptr(dest->as_register_hi(), src_addr_HI));
1095
1096 } else if (dest->is_single_xmm()) {
1097 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
1098 __ movflt(dest->as_xmm_float_reg(), src_addr);
1099
1100 } else if (dest->is_double_xmm()) {
1101 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
1102 __ movdbl(dest->as_xmm_double_reg(), src_addr);
1103
1104 #ifndef _LP64
1105 } else if (dest->is_single_fpu()) {
1106 assert(dest->fpu_regnr() == 0, "dest must be TOS");
1107 Address src_addr = frame_map()->address_for_slot(src->single_stack_ix());
1108 __ fld_s(src_addr);
1109
1110 } else if (dest->is_double_fpu()) {
1111 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
1112 Address src_addr = frame_map()->address_for_slot(src->double_stack_ix());
1113 __ fld_d(src_addr);
1114 #endif // _LP64
1115
1116 } else {
1117 ShouldNotReachHere();
1118 }
1119 }
1120
1121
1122 void LIR_Assembler::stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type) {
1123 if (src->is_single_stack()) {
1124 if (is_reference_type(type)) {
1125 __ pushptr(frame_map()->address_for_slot(src ->single_stack_ix()));
1126 __ popptr (frame_map()->address_for_slot(dest->single_stack_ix()));
1127 } else {
1128 #ifndef _LP64
1129 __ pushl(frame_map()->address_for_slot(src ->single_stack_ix()));
1130 __ popl (frame_map()->address_for_slot(dest->single_stack_ix()));
1131 #else
1132 //no pushl on 64bits
1133 __ movl(rscratch1, frame_map()->address_for_slot(src ->single_stack_ix()));
1134 __ movl(frame_map()->address_for_slot(dest->single_stack_ix()), rscratch1);
1135 #endif
1136 }
1137
1138 } else if (src->is_double_stack()) {
1139 #ifdef _LP64
1140 __ pushptr(frame_map()->address_for_slot(src ->double_stack_ix()));
1141 __ popptr (frame_map()->address_for_slot(dest->double_stack_ix()));
1142 #else
1143 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 0));
1144 // push and pop the part at src + wordSize, adding wordSize for the previous push
1145 __ pushl(frame_map()->address_for_slot(src ->double_stack_ix(), 2 * wordSize));
1146 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 2 * wordSize));
1147 __ popl (frame_map()->address_for_slot(dest->double_stack_ix(), 0));
1148 #endif // _LP64
1149
1150 } else {
1151 ShouldNotReachHere();
1152 }
1153 }
1154
1155
1156 void LIR_Assembler::mem2reg(LIR_Opr src, LIR_Opr dest, BasicType type, LIR_PatchCode patch_code, CodeEmitInfo* info, bool wide) {
1157 assert(src->is_address(), "should not call otherwise");
1158 assert(dest->is_register(), "should not call otherwise");
1159
1160 LIR_Address* addr = src->as_address_ptr();
1161 Address from_addr = as_Address(addr);
1162
1163 if (addr->base()->type() == T_OBJECT) {
1164 __ verify_oop(addr->base()->as_pointer_register());
1165 }
1166
1167 switch (type) {
1168 case T_BOOLEAN: // fall through
1169 case T_BYTE: // fall through
1170 case T_CHAR: // fall through
1171 case T_SHORT:
1172 if (!VM_Version::is_P6() && !from_addr.uses(dest->as_register())) {
1173 // on pre P6 processors we may get partial register stalls
1174 // so blow away the value of to_rinfo before loading a
1175 // partial word into it. Do it here so that it precedes
1176 // the potential patch point below.
1177 __ xorptr(dest->as_register(), dest->as_register());
1178 }
1179 break;
1180 default:
1181 break;
1182 }
1183
1184 PatchingStub* patch = nullptr;
1185 if (patch_code != lir_patch_none) {
1186 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1187 assert(from_addr.disp() != 0, "must have");
1188 }
1189 if (info != nullptr) {
1190 add_debug_info_for_null_check_here(info);
1191 }
1192
1193 switch (type) {
1194 case T_FLOAT: {
1195 if (dest->is_single_xmm()) {
1196 __ movflt(dest->as_xmm_float_reg(), from_addr);
1197 } else {
1198 #ifndef _LP64
1199 assert(dest->is_single_fpu(), "must be");
1200 assert(dest->fpu_regnr() == 0, "dest must be TOS");
1201 __ fld_s(from_addr);
1202 #else
1203 ShouldNotReachHere();
1204 #endif // !LP64
1205 }
1206 break;
1207 }
1208
1209 case T_DOUBLE: {
1210 if (dest->is_double_xmm()) {
1211 __ movdbl(dest->as_xmm_double_reg(), from_addr);
1212 } else {
1213 #ifndef _LP64
1214 assert(dest->is_double_fpu(), "must be");
1215 assert(dest->fpu_regnrLo() == 0, "dest must be TOS");
1216 __ fld_d(from_addr);
1217 #else
1218 ShouldNotReachHere();
1219 #endif // !LP64
1220 }
1221 break;
1222 }
1223
1224 case T_OBJECT: // fall through
1225 case T_ARRAY: // fall through
1226 if (UseCompressedOops && !wide) {
1227 __ movl(dest->as_register(), from_addr);
1228 } else {
1229 __ movptr(dest->as_register(), from_addr);
1230 }
1231 break;
1232
1233 case T_ADDRESS:
1234 __ movptr(dest->as_register(), from_addr);
1235 break;
1236 case T_INT:
1237 __ movl(dest->as_register(), from_addr);
1238 break;
1239
1240 case T_LONG: {
1241 Register to_lo = dest->as_register_lo();
1242 Register to_hi = dest->as_register_hi();
1243 #ifdef _LP64
1244 __ movptr(to_lo, as_Address_lo(addr));
1245 #else
1246 Register base = addr->base()->as_register();
1247 Register index = noreg;
1248 if (addr->index()->is_register()) {
1249 index = addr->index()->as_register();
1250 }
1251 if ((base == to_lo && index == to_hi) ||
1252 (base == to_hi && index == to_lo)) {
1253 // addresses with 2 registers are only formed as a result of
1254 // array access so this code will never have to deal with
1255 // patches or null checks.
1256 assert(info == nullptr && patch == nullptr, "must be");
1257 __ lea(to_hi, as_Address(addr));
1258 __ movl(to_lo, Address(to_hi, 0));
1259 __ movl(to_hi, Address(to_hi, BytesPerWord));
1260 } else if (base == to_lo || index == to_lo) {
1261 assert(base != to_hi, "can't be");
1262 assert(index == noreg || (index != base && index != to_hi), "can't handle this");
1263 __ movl(to_hi, as_Address_hi(addr));
1264 if (patch != nullptr) {
1265 patching_epilog(patch, lir_patch_high, base, info);
1266 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1267 patch_code = lir_patch_low;
1268 }
1269 __ movl(to_lo, as_Address_lo(addr));
1270 } else {
1271 assert(index == noreg || (index != base && index != to_lo), "can't handle this");
1272 __ movl(to_lo, as_Address_lo(addr));
1273 if (patch != nullptr) {
1274 patching_epilog(patch, lir_patch_low, base, info);
1275 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
1276 patch_code = lir_patch_high;
1277 }
1278 __ movl(to_hi, as_Address_hi(addr));
1279 }
1280 #endif // _LP64
1281 break;
1282 }
1283
1284 case T_BOOLEAN: // fall through
1285 case T_BYTE: {
1286 Register dest_reg = dest->as_register();
1287 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6");
1288 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1289 __ movsbl(dest_reg, from_addr);
1290 } else {
1291 __ movb(dest_reg, from_addr);
1292 __ shll(dest_reg, 24);
1293 __ sarl(dest_reg, 24);
1294 }
1295 break;
1296 }
1297
1298 case T_CHAR: {
1299 Register dest_reg = dest->as_register();
1300 assert(VM_Version::is_P6() || dest_reg->has_byte_register(), "must use byte registers if not P6");
1301 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1302 __ movzwl(dest_reg, from_addr);
1303 } else {
1304 __ movw(dest_reg, from_addr);
1305 }
1306 break;
1307 }
1308
1309 case T_SHORT: {
1310 Register dest_reg = dest->as_register();
1311 if (VM_Version::is_P6() || from_addr.uses(dest_reg)) {
1312 __ movswl(dest_reg, from_addr);
1313 } else {
1314 __ movw(dest_reg, from_addr);
1315 __ shll(dest_reg, 16);
1316 __ sarl(dest_reg, 16);
1317 }
1318 break;
1319 }
1320
1321 default:
1322 ShouldNotReachHere();
1323 }
1324
1325 if (patch != nullptr) {
1326 patching_epilog(patch, patch_code, addr->base()->as_register(), info);
1327 }
1328
1329 if (is_reference_type(type)) {
1330 #ifdef _LP64
1331 if (UseCompressedOops && !wide) {
1332 __ decode_heap_oop(dest->as_register());
1333 }
1334 #endif
1335
1336 if (!(UseZGC && !ZGenerational)) {
1337 // Load barrier has not yet been applied, so ZGC can't verify the oop here
1338 __ verify_oop(dest->as_register());
1339 }
1340 }
1341 }
1342
1343
1344 NEEDS_CLEANUP; // This could be static?
1345 Address::ScaleFactor LIR_Assembler::array_element_size(BasicType type) const {
1346 int elem_size = type2aelembytes(type);
1347 switch (elem_size) {
1348 case 1: return Address::times_1;
1349 case 2: return Address::times_2;
1350 case 4: return Address::times_4;
1351 case 8: return Address::times_8;
1352 }
1353 ShouldNotReachHere();
1354 return Address::no_scale;
1355 }
1356
1357
1358 void LIR_Assembler::emit_op3(LIR_Op3* op) {
1359 switch (op->code()) {
1360 case lir_idiv:
1361 case lir_irem:
1362 arithmetic_idiv(op->code(),
1363 op->in_opr1(),
1364 op->in_opr2(),
1365 op->in_opr3(),
1366 op->result_opr(),
1367 op->info());
1368 break;
1369 case lir_fmad:
1370 __ fmad(op->result_opr()->as_xmm_double_reg(),
1371 op->in_opr1()->as_xmm_double_reg(),
1372 op->in_opr2()->as_xmm_double_reg(),
1373 op->in_opr3()->as_xmm_double_reg());
1374 break;
1375 case lir_fmaf:
1376 __ fmaf(op->result_opr()->as_xmm_float_reg(),
1377 op->in_opr1()->as_xmm_float_reg(),
1378 op->in_opr2()->as_xmm_float_reg(),
1379 op->in_opr3()->as_xmm_float_reg());
1380 break;
1381 default: ShouldNotReachHere(); break;
1382 }
1383 }
1384
1385 void LIR_Assembler::emit_opBranch(LIR_OpBranch* op) {
1386 #ifdef ASSERT
1387 assert(op->block() == nullptr || op->block()->label() == op->label(), "wrong label");
1388 if (op->block() != nullptr) _branch_target_blocks.append(op->block());
1389 if (op->ublock() != nullptr) _branch_target_blocks.append(op->ublock());
1390 #endif
1391
1392 if (op->cond() == lir_cond_always) {
1393 if (op->info() != nullptr) add_debug_info_for_branch(op->info());
1394 __ jmp (*(op->label()));
1395 } else {
1396 Assembler::Condition acond = Assembler::zero;
1397 if (op->code() == lir_cond_float_branch) {
1398 assert(op->ublock() != nullptr, "must have unordered successor");
1399 __ jcc(Assembler::parity, *(op->ublock()->label()));
1400 switch(op->cond()) {
1401 case lir_cond_equal: acond = Assembler::equal; break;
1402 case lir_cond_notEqual: acond = Assembler::notEqual; break;
1403 case lir_cond_less: acond = Assembler::below; break;
1404 case lir_cond_lessEqual: acond = Assembler::belowEqual; break;
1405 case lir_cond_greaterEqual: acond = Assembler::aboveEqual; break;
1406 case lir_cond_greater: acond = Assembler::above; break;
1407 default: ShouldNotReachHere();
1408 }
1409 } else {
1410 switch (op->cond()) {
1411 case lir_cond_equal: acond = Assembler::equal; break;
1412 case lir_cond_notEqual: acond = Assembler::notEqual; break;
1413 case lir_cond_less: acond = Assembler::less; break;
1414 case lir_cond_lessEqual: acond = Assembler::lessEqual; break;
1415 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break;
1416 case lir_cond_greater: acond = Assembler::greater; break;
1417 case lir_cond_belowEqual: acond = Assembler::belowEqual; break;
1418 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break;
1419 default: ShouldNotReachHere();
1420 }
1421 }
1422 __ jcc(acond,*(op->label()));
1423 }
1424 }
1425
1426 void LIR_Assembler::emit_opConvert(LIR_OpConvert* op) {
1427 LIR_Opr src = op->in_opr();
1428 LIR_Opr dest = op->result_opr();
1429
1430 switch (op->bytecode()) {
1431 case Bytecodes::_i2l:
1432 #ifdef _LP64
1433 __ movl2ptr(dest->as_register_lo(), src->as_register());
1434 #else
1435 move_regs(src->as_register(), dest->as_register_lo());
1436 move_regs(src->as_register(), dest->as_register_hi());
1437 __ sarl(dest->as_register_hi(), 31);
1438 #endif // LP64
1439 break;
1440
1441 case Bytecodes::_l2i:
1442 #ifdef _LP64
1443 __ movl(dest->as_register(), src->as_register_lo());
1444 #else
1445 move_regs(src->as_register_lo(), dest->as_register());
1446 #endif
1447 break;
1448
1449 case Bytecodes::_i2b:
1450 move_regs(src->as_register(), dest->as_register());
1451 __ sign_extend_byte(dest->as_register());
1452 break;
1453
1454 case Bytecodes::_i2c:
1455 move_regs(src->as_register(), dest->as_register());
1456 __ andl(dest->as_register(), 0xFFFF);
1457 break;
1458
1459 case Bytecodes::_i2s:
1460 move_regs(src->as_register(), dest->as_register());
1461 __ sign_extend_short(dest->as_register());
1462 break;
1463
1464
1465 #ifdef _LP64
1466 case Bytecodes::_f2d:
1467 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg());
1468 break;
1469
1470 case Bytecodes::_d2f:
1471 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg());
1472 break;
1473
1474 case Bytecodes::_i2f:
1475 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register());
1476 break;
1477
1478 case Bytecodes::_i2d:
1479 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register());
1480 break;
1481
1482 case Bytecodes::_l2f:
1483 __ cvtsi2ssq(dest->as_xmm_float_reg(), src->as_register_lo());
1484 break;
1485
1486 case Bytecodes::_l2d:
1487 __ cvtsi2sdq(dest->as_xmm_double_reg(), src->as_register_lo());
1488 break;
1489
1490 case Bytecodes::_f2i:
1491 __ convert_f2i(dest->as_register(), src->as_xmm_float_reg());
1492 break;
1493
1494 case Bytecodes::_d2i:
1495 __ convert_d2i(dest->as_register(), src->as_xmm_double_reg());
1496 break;
1497
1498 case Bytecodes::_f2l:
1499 __ convert_f2l(dest->as_register_lo(), src->as_xmm_float_reg());
1500 break;
1501
1502 case Bytecodes::_d2l:
1503 __ convert_d2l(dest->as_register_lo(), src->as_xmm_double_reg());
1504 break;
1505 #else
1506 case Bytecodes::_f2d:
1507 case Bytecodes::_d2f:
1508 if (dest->is_single_xmm()) {
1509 __ cvtsd2ss(dest->as_xmm_float_reg(), src->as_xmm_double_reg());
1510 } else if (dest->is_double_xmm()) {
1511 __ cvtss2sd(dest->as_xmm_double_reg(), src->as_xmm_float_reg());
1512 } else {
1513 assert(src->fpu() == dest->fpu(), "register must be equal");
1514 // do nothing (float result is rounded later through spilling)
1515 }
1516 break;
1517
1518 case Bytecodes::_i2f:
1519 case Bytecodes::_i2d:
1520 if (dest->is_single_xmm()) {
1521 __ cvtsi2ssl(dest->as_xmm_float_reg(), src->as_register());
1522 } else if (dest->is_double_xmm()) {
1523 __ cvtsi2sdl(dest->as_xmm_double_reg(), src->as_register());
1524 } else {
1525 assert(dest->fpu() == 0, "result must be on TOS");
1526 __ movl(Address(rsp, 0), src->as_register());
1527 __ fild_s(Address(rsp, 0));
1528 }
1529 break;
1530
1531 case Bytecodes::_l2f:
1532 case Bytecodes::_l2d:
1533 assert(!dest->is_xmm_register(), "result in xmm register not supported (no SSE instruction present)");
1534 assert(dest->fpu() == 0, "result must be on TOS");
1535 __ movptr(Address(rsp, 0), src->as_register_lo());
1536 __ movl(Address(rsp, BytesPerWord), src->as_register_hi());
1537 __ fild_d(Address(rsp, 0));
1538 // float result is rounded later through spilling
1539 break;
1540
1541 case Bytecodes::_f2i:
1542 case Bytecodes::_d2i:
1543 if (src->is_single_xmm()) {
1544 __ cvttss2sil(dest->as_register(), src->as_xmm_float_reg());
1545 } else if (src->is_double_xmm()) {
1546 __ cvttsd2sil(dest->as_register(), src->as_xmm_double_reg());
1547 } else {
1548 assert(src->fpu() == 0, "input must be on TOS");
1549 __ fldcw(ExternalAddress(StubRoutines::x86::addr_fpu_cntrl_wrd_trunc()));
1550 __ fist_s(Address(rsp, 0));
1551 __ movl(dest->as_register(), Address(rsp, 0));
1552 __ fldcw(ExternalAddress(StubRoutines::x86::addr_fpu_cntrl_wrd_std()));
1553 }
1554 // IA32 conversion instructions do not match JLS for overflow, underflow and NaN -> fixup in stub
1555 assert(op->stub() != nullptr, "stub required");
1556 __ cmpl(dest->as_register(), 0x80000000);
1557 __ jcc(Assembler::equal, *op->stub()->entry());
1558 __ bind(*op->stub()->continuation());
1559 break;
1560
1561 case Bytecodes::_f2l:
1562 case Bytecodes::_d2l:
1563 assert(!src->is_xmm_register(), "input in xmm register not supported (no SSE instruction present)");
1564 assert(src->fpu() == 0, "input must be on TOS");
1565 assert(dest == FrameMap::long0_opr, "runtime stub places result in these registers");
1566
1567 // instruction sequence too long to inline it here
1568 {
1569 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::fpu2long_stub_id)));
1570 }
1571 break;
1572 #endif // _LP64
1573
1574 default: ShouldNotReachHere();
1575 }
1576 }
1577
1578 void LIR_Assembler::emit_alloc_obj(LIR_OpAllocObj* op) {
1579 if (op->init_check()) {
1580 add_debug_info_for_null_check_here(op->stub()->info());
1581 __ cmpb(Address(op->klass()->as_register(),
1582 InstanceKlass::init_state_offset()),
1583 InstanceKlass::fully_initialized);
1584 __ jcc(Assembler::notEqual, *op->stub()->entry());
1585 }
1586 __ allocate_object(op->obj()->as_register(),
1587 op->tmp1()->as_register(),
1588 op->tmp2()->as_register(),
1589 op->header_size(),
1590 op->object_size(),
1591 op->klass()->as_register(),
1592 *op->stub()->entry());
1593 __ bind(*op->stub()->continuation());
1594 }
1595
1596 void LIR_Assembler::emit_alloc_array(LIR_OpAllocArray* op) {
1597 Register len = op->len()->as_register();
1598 LP64_ONLY( __ movslq(len, len); )
1599
1600 if (UseSlowPath ||
1601 (!UseFastNewObjectArray && is_reference_type(op->type())) ||
1602 (!UseFastNewTypeArray && !is_reference_type(op->type()))) {
1603 __ jmp(*op->stub()->entry());
1604 } else {
1605 Register tmp1 = op->tmp1()->as_register();
1606 Register tmp2 = op->tmp2()->as_register();
1607 Register tmp3 = op->tmp3()->as_register();
1608 if (len == tmp1) {
1609 tmp1 = tmp3;
1610 } else if (len == tmp2) {
1611 tmp2 = tmp3;
1612 } else if (len == tmp3) {
1613 // everything is ok
1614 } else {
1615 __ mov(tmp3, len);
1616 }
1617 __ allocate_array(op->obj()->as_register(),
1618 len,
1619 tmp1,
1620 tmp2,
1621 arrayOopDesc::base_offset_in_bytes(op->type()),
1622 array_element_size(op->type()),
1623 op->klass()->as_register(),
1624 *op->stub()->entry(),
1625 op->zero_array());
1626 }
1627 __ bind(*op->stub()->continuation());
1628 }
1629
1630 void LIR_Assembler::type_profile_helper(Register mdo,
1631 ciMethodData *md, ciProfileData *data,
1632 Register recv, Label* update_done) {
1633 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1634 Label next_test;
1635 // See if the receiver is receiver[n].
1636 __ cmpptr(recv, Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i))));
1637 __ jccb(Assembler::notEqual, next_test);
1638 Address data_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i)));
1639 __ addptr(data_addr, DataLayout::counter_increment);
1640 __ jmp(*update_done);
1641 __ bind(next_test);
1642 }
1643
1644 // Didn't find receiver; find next empty slot and fill it in
1645 for (uint i = 0; i < ReceiverTypeData::row_limit(); i++) {
1646 Label next_test;
1647 Address recv_addr(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_offset(i)));
1648 __ cmpptr(recv_addr, NULL_WORD);
1649 __ jccb(Assembler::notEqual, next_test);
1650 __ movptr(recv_addr, recv);
1651 __ movptr(Address(mdo, md->byte_offset_of_slot(data, ReceiverTypeData::receiver_count_offset(i))), DataLayout::counter_increment);
1652 __ jmp(*update_done);
1653 __ bind(next_test);
1654 }
1655 }
1656
1657 void LIR_Assembler::emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null) {
1658 // we always need a stub for the failure case.
1659 CodeStub* stub = op->stub();
1660 Register obj = op->object()->as_register();
1661 Register k_RInfo = op->tmp1()->as_register();
1662 Register klass_RInfo = op->tmp2()->as_register();
1663 Register dst = op->result_opr()->as_register();
1664 ciKlass* k = op->klass();
1665 Register Rtmp1 = noreg;
1666 Register tmp_load_klass = LP64_ONLY(rscratch1) NOT_LP64(noreg);
1667
1668 // check if it needs to be profiled
1669 ciMethodData* md = nullptr;
1670 ciProfileData* data = nullptr;
1671
1672 if (op->should_profile()) {
1673 ciMethod* method = op->profiled_method();
1674 assert(method != nullptr, "Should have method");
1675 int bci = op->profiled_bci();
1676 md = method->method_data_or_null();
1677 assert(md != nullptr, "Sanity");
1678 data = md->bci_to_data(bci);
1679 assert(data != nullptr, "need data for type check");
1680 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1681 }
1682 Label* success_target = success;
1683 Label* failure_target = failure;
1684
1685 if (obj == k_RInfo) {
1686 k_RInfo = dst;
1687 } else if (obj == klass_RInfo) {
1688 klass_RInfo = dst;
1689 }
1690 if (k->is_loaded() && !UseCompressedClassPointers) {
1691 select_different_registers(obj, dst, k_RInfo, klass_RInfo);
1692 } else {
1693 Rtmp1 = op->tmp3()->as_register();
1694 select_different_registers(obj, dst, k_RInfo, klass_RInfo, Rtmp1);
1695 }
1696
1697 assert_different_registers(obj, k_RInfo, klass_RInfo);
1698
1699 __ testptr(obj, obj);
1700 if (op->should_profile()) {
1701 Label not_null;
1702 Register mdo = klass_RInfo;
1703 __ mov_metadata(mdo, md->constant_encoding());
1704 __ jccb(Assembler::notEqual, not_null);
1705 // Object is null; update MDO and exit
1706 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()));
1707 int header_bits = BitData::null_seen_byte_constant();
1708 __ orb(data_addr, header_bits);
1709 __ jmp(*obj_is_null);
1710 __ bind(not_null);
1711
1712 Label update_done;
1713 Register recv = k_RInfo;
1714 __ load_klass(recv, obj, tmp_load_klass);
1715 type_profile_helper(mdo, md, data, recv, &update_done);
1716
1717 Address nonprofiled_receiver_count_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1718 __ addptr(nonprofiled_receiver_count_addr, DataLayout::counter_increment);
1719
1720 __ bind(update_done);
1721 } else {
1722 __ jcc(Assembler::equal, *obj_is_null);
1723 }
1724
1725 if (!k->is_loaded()) {
1726 klass2reg_with_patching(k_RInfo, op->info_for_patch());
1727 } else {
1728 #ifdef _LP64
1729 __ mov_metadata(k_RInfo, k->constant_encoding());
1730 #endif // _LP64
1731 }
1732 __ verify_oop(obj);
1733
1734 if (op->fast_check()) {
1735 // get object class
1736 // not a safepoint as obj null check happens earlier
1737 #ifdef _LP64
1738 if (UseCompressedClassPointers) {
1739 __ load_klass(Rtmp1, obj, tmp_load_klass);
1740 __ cmpptr(k_RInfo, Rtmp1);
1741 } else {
1742 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
1743 }
1744 #else
1745 if (k->is_loaded()) {
1746 __ cmpklass(Address(obj, oopDesc::klass_offset_in_bytes()), k->constant_encoding());
1747 } else {
1748 __ cmpptr(k_RInfo, Address(obj, oopDesc::klass_offset_in_bytes()));
1749 }
1750 #endif
1751 __ jcc(Assembler::notEqual, *failure_target);
1752 // successful cast, fall through to profile or jump
1753 } else {
1754 // get object class
1755 // not a safepoint as obj null check happens earlier
1756 __ load_klass(klass_RInfo, obj, tmp_load_klass);
1757 if (k->is_loaded()) {
1758 // See if we get an immediate positive hit
1759 #ifdef _LP64
1760 __ cmpptr(k_RInfo, Address(klass_RInfo, k->super_check_offset()));
1761 #else
1762 __ cmpklass(Address(klass_RInfo, k->super_check_offset()), k->constant_encoding());
1763 #endif // _LP64
1764 if ((juint)in_bytes(Klass::secondary_super_cache_offset()) != k->super_check_offset()) {
1765 __ jcc(Assembler::notEqual, *failure_target);
1766 // successful cast, fall through to profile or jump
1767 } else {
1768 // See if we get an immediate positive hit
1769 __ jcc(Assembler::equal, *success_target);
1770 // check for self
1771 #ifdef _LP64
1772 __ cmpptr(klass_RInfo, k_RInfo);
1773 #else
1774 __ cmpklass(klass_RInfo, k->constant_encoding());
1775 #endif // _LP64
1776 __ jcc(Assembler::equal, *success_target);
1777
1778 __ push(klass_RInfo);
1779 #ifdef _LP64
1780 __ push(k_RInfo);
1781 #else
1782 __ pushklass(k->constant_encoding(), noreg);
1783 #endif // _LP64
1784 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1785 __ pop(klass_RInfo);
1786 __ pop(klass_RInfo);
1787 // result is a boolean
1788 __ testl(klass_RInfo, klass_RInfo);
1789 __ jcc(Assembler::equal, *failure_target);
1790 // successful cast, fall through to profile or jump
1791 }
1792 } else {
1793 // perform the fast part of the checking logic
1794 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, nullptr);
1795 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1796 __ push(klass_RInfo);
1797 __ push(k_RInfo);
1798 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1799 __ pop(klass_RInfo);
1800 __ pop(k_RInfo);
1801 // result is a boolean
1802 __ testl(k_RInfo, k_RInfo);
1803 __ jcc(Assembler::equal, *failure_target);
1804 // successful cast, fall through to profile or jump
1805 }
1806 }
1807 __ jmp(*success);
1808 }
1809
1810
1811 void LIR_Assembler::emit_opTypeCheck(LIR_OpTypeCheck* op) {
1812 Register tmp_load_klass = LP64_ONLY(rscratch1) NOT_LP64(noreg);
1813 LIR_Code code = op->code();
1814 if (code == lir_store_check) {
1815 Register value = op->object()->as_register();
1816 Register array = op->array()->as_register();
1817 Register k_RInfo = op->tmp1()->as_register();
1818 Register klass_RInfo = op->tmp2()->as_register();
1819 Register Rtmp1 = op->tmp3()->as_register();
1820
1821 CodeStub* stub = op->stub();
1822
1823 // check if it needs to be profiled
1824 ciMethodData* md = nullptr;
1825 ciProfileData* data = nullptr;
1826
1827 if (op->should_profile()) {
1828 ciMethod* method = op->profiled_method();
1829 assert(method != nullptr, "Should have method");
1830 int bci = op->profiled_bci();
1831 md = method->method_data_or_null();
1832 assert(md != nullptr, "Sanity");
1833 data = md->bci_to_data(bci);
1834 assert(data != nullptr, "need data for type check");
1835 assert(data->is_ReceiverTypeData(), "need ReceiverTypeData for type check");
1836 }
1837 Label done;
1838 Label* success_target = &done;
1839 Label* failure_target = stub->entry();
1840
1841 __ testptr(value, value);
1842 if (op->should_profile()) {
1843 Label not_null;
1844 Register mdo = klass_RInfo;
1845 __ mov_metadata(mdo, md->constant_encoding());
1846 __ jccb(Assembler::notEqual, not_null);
1847 // Object is null; update MDO and exit
1848 Address data_addr(mdo, md->byte_offset_of_slot(data, DataLayout::flags_offset()));
1849 int header_bits = BitData::null_seen_byte_constant();
1850 __ orb(data_addr, header_bits);
1851 __ jmp(done);
1852 __ bind(not_null);
1853
1854 Label update_done;
1855 Register recv = k_RInfo;
1856 __ load_klass(recv, value, tmp_load_klass);
1857 type_profile_helper(mdo, md, data, recv, &update_done);
1858
1859 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
1860 __ addptr(counter_addr, DataLayout::counter_increment);
1861 __ bind(update_done);
1862 } else {
1863 __ jcc(Assembler::equal, done);
1864 }
1865
1866 add_debug_info_for_null_check_here(op->info_for_exception());
1867 __ load_klass(k_RInfo, array, tmp_load_klass);
1868 __ load_klass(klass_RInfo, value, tmp_load_klass);
1869
1870 // get instance klass (it's already uncompressed)
1871 __ movptr(k_RInfo, Address(k_RInfo, ObjArrayKlass::element_klass_offset()));
1872 // perform the fast part of the checking logic
1873 __ check_klass_subtype_fast_path(klass_RInfo, k_RInfo, Rtmp1, success_target, failure_target, nullptr);
1874 // call out-of-line instance of __ check_klass_subtype_slow_path(...):
1875 __ push(klass_RInfo);
1876 __ push(k_RInfo);
1877 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
1878 __ pop(klass_RInfo);
1879 __ pop(k_RInfo);
1880 // result is a boolean
1881 __ testl(k_RInfo, k_RInfo);
1882 __ jcc(Assembler::equal, *failure_target);
1883 // fall through to the success case
1884
1885 __ bind(done);
1886 } else
1887 if (code == lir_checkcast) {
1888 Register obj = op->object()->as_register();
1889 Register dst = op->result_opr()->as_register();
1890 Label success;
1891 emit_typecheck_helper(op, &success, op->stub()->entry(), &success);
1892 __ bind(success);
1893 if (dst != obj) {
1894 __ mov(dst, obj);
1895 }
1896 } else
1897 if (code == lir_instanceof) {
1898 Register obj = op->object()->as_register();
1899 Register dst = op->result_opr()->as_register();
1900 Label success, failure, done;
1901 emit_typecheck_helper(op, &success, &failure, &failure);
1902 __ bind(failure);
1903 __ xorptr(dst, dst);
1904 __ jmpb(done);
1905 __ bind(success);
1906 __ movptr(dst, 1);
1907 __ bind(done);
1908 } else {
1909 ShouldNotReachHere();
1910 }
1911
1912 }
1913
1914
1915 void LIR_Assembler::emit_compare_and_swap(LIR_OpCompareAndSwap* op) {
1916 if (LP64_ONLY(false &&) op->code() == lir_cas_long) {
1917 assert(op->cmp_value()->as_register_lo() == rax, "wrong register");
1918 assert(op->cmp_value()->as_register_hi() == rdx, "wrong register");
1919 assert(op->new_value()->as_register_lo() == rbx, "wrong register");
1920 assert(op->new_value()->as_register_hi() == rcx, "wrong register");
1921 Register addr = op->addr()->as_register();
1922 __ lock();
1923 NOT_LP64(__ cmpxchg8(Address(addr, 0)));
1924
1925 } else if (op->code() == lir_cas_int || op->code() == lir_cas_obj ) {
1926 NOT_LP64(assert(op->addr()->is_single_cpu(), "must be single");)
1927 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo());
1928 Register newval = op->new_value()->as_register();
1929 Register cmpval = op->cmp_value()->as_register();
1930 assert(cmpval == rax, "wrong register");
1931 assert(newval != noreg, "new val must be register");
1932 assert(cmpval != newval, "cmp and new values must be in different registers");
1933 assert(cmpval != addr, "cmp and addr must be in different registers");
1934 assert(newval != addr, "new value and addr must be in different registers");
1935
1936 if ( op->code() == lir_cas_obj) {
1937 #ifdef _LP64
1938 if (UseCompressedOops) {
1939 __ encode_heap_oop(cmpval);
1940 __ mov(rscratch1, newval);
1941 __ encode_heap_oop(rscratch1);
1942 __ lock();
1943 // cmpval (rax) is implicitly used by this instruction
1944 __ cmpxchgl(rscratch1, Address(addr, 0));
1945 } else
1946 #endif
1947 {
1948 __ lock();
1949 __ cmpxchgptr(newval, Address(addr, 0));
1950 }
1951 } else {
1952 assert(op->code() == lir_cas_int, "lir_cas_int expected");
1953 __ lock();
1954 __ cmpxchgl(newval, Address(addr, 0));
1955 }
1956 #ifdef _LP64
1957 } else if (op->code() == lir_cas_long) {
1958 Register addr = (op->addr()->is_single_cpu() ? op->addr()->as_register() : op->addr()->as_register_lo());
1959 Register newval = op->new_value()->as_register_lo();
1960 Register cmpval = op->cmp_value()->as_register_lo();
1961 assert(cmpval == rax, "wrong register");
1962 assert(newval != noreg, "new val must be register");
1963 assert(cmpval != newval, "cmp and new values must be in different registers");
1964 assert(cmpval != addr, "cmp and addr must be in different registers");
1965 assert(newval != addr, "new value and addr must be in different registers");
1966 __ lock();
1967 __ cmpxchgq(newval, Address(addr, 0));
1968 #endif // _LP64
1969 } else {
1970 Unimplemented();
1971 }
1972 }
1973
1974 void LIR_Assembler::cmove(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Opr result, BasicType type,
1975 LIR_Opr cmp_opr1, LIR_Opr cmp_opr2) {
1976 assert(cmp_opr1 == LIR_OprFact::illegalOpr && cmp_opr2 == LIR_OprFact::illegalOpr, "unnecessary cmp oprs on x86");
1977
1978 Assembler::Condition acond, ncond;
1979 switch (condition) {
1980 case lir_cond_equal: acond = Assembler::equal; ncond = Assembler::notEqual; break;
1981 case lir_cond_notEqual: acond = Assembler::notEqual; ncond = Assembler::equal; break;
1982 case lir_cond_less: acond = Assembler::less; ncond = Assembler::greaterEqual; break;
1983 case lir_cond_lessEqual: acond = Assembler::lessEqual; ncond = Assembler::greater; break;
1984 case lir_cond_greaterEqual: acond = Assembler::greaterEqual; ncond = Assembler::less; break;
1985 case lir_cond_greater: acond = Assembler::greater; ncond = Assembler::lessEqual; break;
1986 case lir_cond_belowEqual: acond = Assembler::belowEqual; ncond = Assembler::above; break;
1987 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; ncond = Assembler::below; break;
1988 default: acond = Assembler::equal; ncond = Assembler::notEqual;
1989 ShouldNotReachHere();
1990 }
1991
1992 if (opr1->is_cpu_register()) {
1993 reg2reg(opr1, result);
1994 } else if (opr1->is_stack()) {
1995 stack2reg(opr1, result, result->type());
1996 } else if (opr1->is_constant()) {
1997 const2reg(opr1, result, lir_patch_none, nullptr);
1998 } else {
1999 ShouldNotReachHere();
2000 }
2001
2002 if (VM_Version::supports_cmov() && !opr2->is_constant()) {
2003 // optimized version that does not require a branch
2004 if (opr2->is_single_cpu()) {
2005 assert(opr2->cpu_regnr() != result->cpu_regnr(), "opr2 already overwritten by previous move");
2006 __ cmov(ncond, result->as_register(), opr2->as_register());
2007 } else if (opr2->is_double_cpu()) {
2008 assert(opr2->cpu_regnrLo() != result->cpu_regnrLo() && opr2->cpu_regnrLo() != result->cpu_regnrHi(), "opr2 already overwritten by previous move");
2009 assert(opr2->cpu_regnrHi() != result->cpu_regnrLo() && opr2->cpu_regnrHi() != result->cpu_regnrHi(), "opr2 already overwritten by previous move");
2010 __ cmovptr(ncond, result->as_register_lo(), opr2->as_register_lo());
2011 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), opr2->as_register_hi());)
2012 } else if (opr2->is_single_stack()) {
2013 __ cmovl(ncond, result->as_register(), frame_map()->address_for_slot(opr2->single_stack_ix()));
2014 } else if (opr2->is_double_stack()) {
2015 __ cmovptr(ncond, result->as_register_lo(), frame_map()->address_for_slot(opr2->double_stack_ix(), lo_word_offset_in_bytes));
2016 NOT_LP64(__ cmovptr(ncond, result->as_register_hi(), frame_map()->address_for_slot(opr2->double_stack_ix(), hi_word_offset_in_bytes));)
2017 } else {
2018 ShouldNotReachHere();
2019 }
2020
2021 } else {
2022 Label skip;
2023 __ jccb(acond, skip);
2024 if (opr2->is_cpu_register()) {
2025 reg2reg(opr2, result);
2026 } else if (opr2->is_stack()) {
2027 stack2reg(opr2, result, result->type());
2028 } else if (opr2->is_constant()) {
2029 const2reg(opr2, result, lir_patch_none, nullptr);
2030 } else {
2031 ShouldNotReachHere();
2032 }
2033 __ bind(skip);
2034 }
2035 }
2036
2037
2038 void LIR_Assembler::arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack) {
2039 assert(info == nullptr, "should never be used, idiv/irem and ldiv/lrem not handled by this method");
2040
2041 if (left->is_single_cpu()) {
2042 assert(left == dest, "left and dest must be equal");
2043 Register lreg = left->as_register();
2044
2045 if (right->is_single_cpu()) {
2046 // cpu register - cpu register
2047 Register rreg = right->as_register();
2048 switch (code) {
2049 case lir_add: __ addl (lreg, rreg); break;
2050 case lir_sub: __ subl (lreg, rreg); break;
2051 case lir_mul: __ imull(lreg, rreg); break;
2052 default: ShouldNotReachHere();
2053 }
2054
2055 } else if (right->is_stack()) {
2056 // cpu register - stack
2057 Address raddr = frame_map()->address_for_slot(right->single_stack_ix());
2058 switch (code) {
2059 case lir_add: __ addl(lreg, raddr); break;
2060 case lir_sub: __ subl(lreg, raddr); break;
2061 default: ShouldNotReachHere();
2062 }
2063
2064 } else if (right->is_constant()) {
2065 // cpu register - constant
2066 jint c = right->as_constant_ptr()->as_jint();
2067 switch (code) {
2068 case lir_add: {
2069 __ incrementl(lreg, c);
2070 break;
2071 }
2072 case lir_sub: {
2073 __ decrementl(lreg, c);
2074 break;
2075 }
2076 default: ShouldNotReachHere();
2077 }
2078
2079 } else {
2080 ShouldNotReachHere();
2081 }
2082
2083 } else if (left->is_double_cpu()) {
2084 assert(left == dest, "left and dest must be equal");
2085 Register lreg_lo = left->as_register_lo();
2086 Register lreg_hi = left->as_register_hi();
2087
2088 if (right->is_double_cpu()) {
2089 // cpu register - cpu register
2090 Register rreg_lo = right->as_register_lo();
2091 Register rreg_hi = right->as_register_hi();
2092 NOT_LP64(assert_different_registers(lreg_lo, lreg_hi, rreg_lo, rreg_hi));
2093 LP64_ONLY(assert_different_registers(lreg_lo, rreg_lo));
2094 switch (code) {
2095 case lir_add:
2096 __ addptr(lreg_lo, rreg_lo);
2097 NOT_LP64(__ adcl(lreg_hi, rreg_hi));
2098 break;
2099 case lir_sub:
2100 __ subptr(lreg_lo, rreg_lo);
2101 NOT_LP64(__ sbbl(lreg_hi, rreg_hi));
2102 break;
2103 case lir_mul:
2104 #ifdef _LP64
2105 __ imulq(lreg_lo, rreg_lo);
2106 #else
2107 assert(lreg_lo == rax && lreg_hi == rdx, "must be");
2108 __ imull(lreg_hi, rreg_lo);
2109 __ imull(rreg_hi, lreg_lo);
2110 __ addl (rreg_hi, lreg_hi);
2111 __ mull (rreg_lo);
2112 __ addl (lreg_hi, rreg_hi);
2113 #endif // _LP64
2114 break;
2115 default:
2116 ShouldNotReachHere();
2117 }
2118
2119 } else if (right->is_constant()) {
2120 // cpu register - constant
2121 #ifdef _LP64
2122 jlong c = right->as_constant_ptr()->as_jlong_bits();
2123 __ movptr(r10, (intptr_t) c);
2124 switch (code) {
2125 case lir_add:
2126 __ addptr(lreg_lo, r10);
2127 break;
2128 case lir_sub:
2129 __ subptr(lreg_lo, r10);
2130 break;
2131 default:
2132 ShouldNotReachHere();
2133 }
2134 #else
2135 jint c_lo = right->as_constant_ptr()->as_jint_lo();
2136 jint c_hi = right->as_constant_ptr()->as_jint_hi();
2137 switch (code) {
2138 case lir_add:
2139 __ addptr(lreg_lo, c_lo);
2140 __ adcl(lreg_hi, c_hi);
2141 break;
2142 case lir_sub:
2143 __ subptr(lreg_lo, c_lo);
2144 __ sbbl(lreg_hi, c_hi);
2145 break;
2146 default:
2147 ShouldNotReachHere();
2148 }
2149 #endif // _LP64
2150
2151 } else {
2152 ShouldNotReachHere();
2153 }
2154
2155 } else if (left->is_single_xmm()) {
2156 assert(left == dest, "left and dest must be equal");
2157 XMMRegister lreg = left->as_xmm_float_reg();
2158
2159 if (right->is_single_xmm()) {
2160 XMMRegister rreg = right->as_xmm_float_reg();
2161 switch (code) {
2162 case lir_add: __ addss(lreg, rreg); break;
2163 case lir_sub: __ subss(lreg, rreg); break;
2164 case lir_mul: __ mulss(lreg, rreg); break;
2165 case lir_div: __ divss(lreg, rreg); break;
2166 default: ShouldNotReachHere();
2167 }
2168 } else {
2169 Address raddr;
2170 if (right->is_single_stack()) {
2171 raddr = frame_map()->address_for_slot(right->single_stack_ix());
2172 } else if (right->is_constant()) {
2173 // hack for now
2174 raddr = __ as_Address(InternalAddress(float_constant(right->as_jfloat())));
2175 } else {
2176 ShouldNotReachHere();
2177 }
2178 switch (code) {
2179 case lir_add: __ addss(lreg, raddr); break;
2180 case lir_sub: __ subss(lreg, raddr); break;
2181 case lir_mul: __ mulss(lreg, raddr); break;
2182 case lir_div: __ divss(lreg, raddr); break;
2183 default: ShouldNotReachHere();
2184 }
2185 }
2186
2187 } else if (left->is_double_xmm()) {
2188 assert(left == dest, "left and dest must be equal");
2189
2190 XMMRegister lreg = left->as_xmm_double_reg();
2191 if (right->is_double_xmm()) {
2192 XMMRegister rreg = right->as_xmm_double_reg();
2193 switch (code) {
2194 case lir_add: __ addsd(lreg, rreg); break;
2195 case lir_sub: __ subsd(lreg, rreg); break;
2196 case lir_mul: __ mulsd(lreg, rreg); break;
2197 case lir_div: __ divsd(lreg, rreg); break;
2198 default: ShouldNotReachHere();
2199 }
2200 } else {
2201 Address raddr;
2202 if (right->is_double_stack()) {
2203 raddr = frame_map()->address_for_slot(right->double_stack_ix());
2204 } else if (right->is_constant()) {
2205 // hack for now
2206 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble())));
2207 } else {
2208 ShouldNotReachHere();
2209 }
2210 switch (code) {
2211 case lir_add: __ addsd(lreg, raddr); break;
2212 case lir_sub: __ subsd(lreg, raddr); break;
2213 case lir_mul: __ mulsd(lreg, raddr); break;
2214 case lir_div: __ divsd(lreg, raddr); break;
2215 default: ShouldNotReachHere();
2216 }
2217 }
2218
2219 #ifndef _LP64
2220 } else if (left->is_single_fpu()) {
2221 assert(dest->is_single_fpu(), "fpu stack allocation required");
2222
2223 if (right->is_single_fpu()) {
2224 arith_fpu_implementation(code, left->fpu_regnr(), right->fpu_regnr(), dest->fpu_regnr(), pop_fpu_stack);
2225
2226 } else {
2227 assert(left->fpu_regnr() == 0, "left must be on TOS");
2228 assert(dest->fpu_regnr() == 0, "dest must be on TOS");
2229
2230 Address raddr;
2231 if (right->is_single_stack()) {
2232 raddr = frame_map()->address_for_slot(right->single_stack_ix());
2233 } else if (right->is_constant()) {
2234 address const_addr = float_constant(right->as_jfloat());
2235 assert(const_addr != nullptr, "incorrect float/double constant maintenance");
2236 // hack for now
2237 raddr = __ as_Address(InternalAddress(const_addr));
2238 } else {
2239 ShouldNotReachHere();
2240 }
2241
2242 switch (code) {
2243 case lir_add: __ fadd_s(raddr); break;
2244 case lir_sub: __ fsub_s(raddr); break;
2245 case lir_mul: __ fmul_s(raddr); break;
2246 case lir_div: __ fdiv_s(raddr); break;
2247 default: ShouldNotReachHere();
2248 }
2249 }
2250
2251 } else if (left->is_double_fpu()) {
2252 assert(dest->is_double_fpu(), "fpu stack allocation required");
2253
2254 if (code == lir_mul || code == lir_div) {
2255 // Double values require special handling for strictfp mul/div on x86
2256 __ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias1()));
2257 __ fmulp(left->fpu_regnrLo() + 1);
2258 }
2259
2260 if (right->is_double_fpu()) {
2261 arith_fpu_implementation(code, left->fpu_regnrLo(), right->fpu_regnrLo(), dest->fpu_regnrLo(), pop_fpu_stack);
2262
2263 } else {
2264 assert(left->fpu_regnrLo() == 0, "left must be on TOS");
2265 assert(dest->fpu_regnrLo() == 0, "dest must be on TOS");
2266
2267 Address raddr;
2268 if (right->is_double_stack()) {
2269 raddr = frame_map()->address_for_slot(right->double_stack_ix());
2270 } else if (right->is_constant()) {
2271 // hack for now
2272 raddr = __ as_Address(InternalAddress(double_constant(right->as_jdouble())));
2273 } else {
2274 ShouldNotReachHere();
2275 }
2276
2277 switch (code) {
2278 case lir_add: __ fadd_d(raddr); break;
2279 case lir_sub: __ fsub_d(raddr); break;
2280 case lir_mul: __ fmul_d(raddr); break;
2281 case lir_div: __ fdiv_d(raddr); break;
2282 default: ShouldNotReachHere();
2283 }
2284 }
2285
2286 if (code == lir_mul || code == lir_div) {
2287 // Double values require special handling for strictfp mul/div on x86
2288 __ fld_x(ExternalAddress(StubRoutines::x86::addr_fpu_subnormal_bias2()));
2289 __ fmulp(dest->fpu_regnrLo() + 1);
2290 }
2291 #endif // !_LP64
2292
2293 } else if (left->is_single_stack() || left->is_address()) {
2294 assert(left == dest, "left and dest must be equal");
2295
2296 Address laddr;
2297 if (left->is_single_stack()) {
2298 laddr = frame_map()->address_for_slot(left->single_stack_ix());
2299 } else if (left->is_address()) {
2300 laddr = as_Address(left->as_address_ptr());
2301 } else {
2302 ShouldNotReachHere();
2303 }
2304
2305 if (right->is_single_cpu()) {
2306 Register rreg = right->as_register();
2307 switch (code) {
2308 case lir_add: __ addl(laddr, rreg); break;
2309 case lir_sub: __ subl(laddr, rreg); break;
2310 default: ShouldNotReachHere();
2311 }
2312 } else if (right->is_constant()) {
2313 jint c = right->as_constant_ptr()->as_jint();
2314 switch (code) {
2315 case lir_add: {
2316 __ incrementl(laddr, c);
2317 break;
2318 }
2319 case lir_sub: {
2320 __ decrementl(laddr, c);
2321 break;
2322 }
2323 default: ShouldNotReachHere();
2324 }
2325 } else {
2326 ShouldNotReachHere();
2327 }
2328
2329 } else {
2330 ShouldNotReachHere();
2331 }
2332 }
2333
2334 #ifndef _LP64
2335 void LIR_Assembler::arith_fpu_implementation(LIR_Code code, int left_index, int right_index, int dest_index, bool pop_fpu_stack) {
2336 assert(pop_fpu_stack || (left_index == dest_index || right_index == dest_index), "invalid LIR");
2337 assert(!pop_fpu_stack || (left_index - 1 == dest_index || right_index - 1 == dest_index), "invalid LIR");
2338 assert(left_index == 0 || right_index == 0, "either must be on top of stack");
2339
2340 bool left_is_tos = (left_index == 0);
2341 bool dest_is_tos = (dest_index == 0);
2342 int non_tos_index = (left_is_tos ? right_index : left_index);
2343
2344 switch (code) {
2345 case lir_add:
2346 if (pop_fpu_stack) __ faddp(non_tos_index);
2347 else if (dest_is_tos) __ fadd (non_tos_index);
2348 else __ fadda(non_tos_index);
2349 break;
2350
2351 case lir_sub:
2352 if (left_is_tos) {
2353 if (pop_fpu_stack) __ fsubrp(non_tos_index);
2354 else if (dest_is_tos) __ fsub (non_tos_index);
2355 else __ fsubra(non_tos_index);
2356 } else {
2357 if (pop_fpu_stack) __ fsubp (non_tos_index);
2358 else if (dest_is_tos) __ fsubr (non_tos_index);
2359 else __ fsuba (non_tos_index);
2360 }
2361 break;
2362
2363 case lir_mul:
2364 if (pop_fpu_stack) __ fmulp(non_tos_index);
2365 else if (dest_is_tos) __ fmul (non_tos_index);
2366 else __ fmula(non_tos_index);
2367 break;
2368
2369 case lir_div:
2370 if (left_is_tos) {
2371 if (pop_fpu_stack) __ fdivrp(non_tos_index);
2372 else if (dest_is_tos) __ fdiv (non_tos_index);
2373 else __ fdivra(non_tos_index);
2374 } else {
2375 if (pop_fpu_stack) __ fdivp (non_tos_index);
2376 else if (dest_is_tos) __ fdivr (non_tos_index);
2377 else __ fdiva (non_tos_index);
2378 }
2379 break;
2380
2381 case lir_rem:
2382 assert(left_is_tos && dest_is_tos && right_index == 1, "must be guaranteed by FPU stack allocation");
2383 __ fremr(noreg);
2384 break;
2385
2386 default:
2387 ShouldNotReachHere();
2388 }
2389 }
2390 #endif // _LP64
2391
2392
2393 void LIR_Assembler::intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr tmp, LIR_Opr dest, LIR_Op* op) {
2394 if (value->is_double_xmm()) {
2395 switch(code) {
2396 case lir_abs :
2397 {
2398 #ifdef _LP64
2399 if (UseAVX > 2 && !VM_Version::supports_avx512vl()) {
2400 assert(tmp->is_valid(), "need temporary");
2401 __ vpandn(dest->as_xmm_double_reg(), tmp->as_xmm_double_reg(), value->as_xmm_double_reg(), 2);
2402 } else
2403 #endif
2404 {
2405 if (dest->as_xmm_double_reg() != value->as_xmm_double_reg()) {
2406 __ movdbl(dest->as_xmm_double_reg(), value->as_xmm_double_reg());
2407 }
2408 assert(!tmp->is_valid(), "do not need temporary");
2409 __ andpd(dest->as_xmm_double_reg(),
2410 ExternalAddress((address)double_signmask_pool),
2411 rscratch1);
2412 }
2413 }
2414 break;
2415
2416 case lir_sqrt: __ sqrtsd(dest->as_xmm_double_reg(), value->as_xmm_double_reg()); break;
2417 // all other intrinsics are not available in the SSE instruction set, so FPU is used
2418 default : ShouldNotReachHere();
2419 }
2420
2421 #ifndef _LP64
2422 } else if (value->is_double_fpu()) {
2423 assert(value->fpu_regnrLo() == 0 && dest->fpu_regnrLo() == 0, "both must be on TOS");
2424 switch(code) {
2425 case lir_abs : __ fabs() ; break;
2426 case lir_sqrt : __ fsqrt(); break;
2427 default : ShouldNotReachHere();
2428 }
2429 #endif // !_LP64
2430 } else if (code == lir_f2hf) {
2431 __ flt_to_flt16(dest->as_register(), value->as_xmm_float_reg(), tmp->as_xmm_float_reg());
2432 } else if (code == lir_hf2f) {
2433 __ flt16_to_flt(dest->as_xmm_float_reg(), value->as_register());
2434 } else {
2435 Unimplemented();
2436 }
2437 }
2438
2439 void LIR_Assembler::logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst) {
2440 // assert(left->destroys_register(), "check");
2441 if (left->is_single_cpu()) {
2442 Register reg = left->as_register();
2443 if (right->is_constant()) {
2444 int val = right->as_constant_ptr()->as_jint();
2445 switch (code) {
2446 case lir_logic_and: __ andl (reg, val); break;
2447 case lir_logic_or: __ orl (reg, val); break;
2448 case lir_logic_xor: __ xorl (reg, val); break;
2449 default: ShouldNotReachHere();
2450 }
2451 } else if (right->is_stack()) {
2452 // added support for stack operands
2453 Address raddr = frame_map()->address_for_slot(right->single_stack_ix());
2454 switch (code) {
2455 case lir_logic_and: __ andl (reg, raddr); break;
2456 case lir_logic_or: __ orl (reg, raddr); break;
2457 case lir_logic_xor: __ xorl (reg, raddr); break;
2458 default: ShouldNotReachHere();
2459 }
2460 } else {
2461 Register rright = right->as_register();
2462 switch (code) {
2463 case lir_logic_and: __ andptr (reg, rright); break;
2464 case lir_logic_or : __ orptr (reg, rright); break;
2465 case lir_logic_xor: __ xorptr (reg, rright); break;
2466 default: ShouldNotReachHere();
2467 }
2468 }
2469 move_regs(reg, dst->as_register());
2470 } else {
2471 Register l_lo = left->as_register_lo();
2472 Register l_hi = left->as_register_hi();
2473 if (right->is_constant()) {
2474 #ifdef _LP64
2475 __ mov64(rscratch1, right->as_constant_ptr()->as_jlong());
2476 switch (code) {
2477 case lir_logic_and:
2478 __ andq(l_lo, rscratch1);
2479 break;
2480 case lir_logic_or:
2481 __ orq(l_lo, rscratch1);
2482 break;
2483 case lir_logic_xor:
2484 __ xorq(l_lo, rscratch1);
2485 break;
2486 default: ShouldNotReachHere();
2487 }
2488 #else
2489 int r_lo = right->as_constant_ptr()->as_jint_lo();
2490 int r_hi = right->as_constant_ptr()->as_jint_hi();
2491 switch (code) {
2492 case lir_logic_and:
2493 __ andl(l_lo, r_lo);
2494 __ andl(l_hi, r_hi);
2495 break;
2496 case lir_logic_or:
2497 __ orl(l_lo, r_lo);
2498 __ orl(l_hi, r_hi);
2499 break;
2500 case lir_logic_xor:
2501 __ xorl(l_lo, r_lo);
2502 __ xorl(l_hi, r_hi);
2503 break;
2504 default: ShouldNotReachHere();
2505 }
2506 #endif // _LP64
2507 } else {
2508 #ifdef _LP64
2509 Register r_lo;
2510 if (is_reference_type(right->type())) {
2511 r_lo = right->as_register();
2512 } else {
2513 r_lo = right->as_register_lo();
2514 }
2515 #else
2516 Register r_lo = right->as_register_lo();
2517 Register r_hi = right->as_register_hi();
2518 assert(l_lo != r_hi, "overwriting registers");
2519 #endif
2520 switch (code) {
2521 case lir_logic_and:
2522 __ andptr(l_lo, r_lo);
2523 NOT_LP64(__ andptr(l_hi, r_hi);)
2524 break;
2525 case lir_logic_or:
2526 __ orptr(l_lo, r_lo);
2527 NOT_LP64(__ orptr(l_hi, r_hi);)
2528 break;
2529 case lir_logic_xor:
2530 __ xorptr(l_lo, r_lo);
2531 NOT_LP64(__ xorptr(l_hi, r_hi);)
2532 break;
2533 default: ShouldNotReachHere();
2534 }
2535 }
2536
2537 Register dst_lo = dst->as_register_lo();
2538 Register dst_hi = dst->as_register_hi();
2539
2540 #ifdef _LP64
2541 move_regs(l_lo, dst_lo);
2542 #else
2543 if (dst_lo == l_hi) {
2544 assert(dst_hi != l_lo, "overwriting registers");
2545 move_regs(l_hi, dst_hi);
2546 move_regs(l_lo, dst_lo);
2547 } else {
2548 assert(dst_lo != l_hi, "overwriting registers");
2549 move_regs(l_lo, dst_lo);
2550 move_regs(l_hi, dst_hi);
2551 }
2552 #endif // _LP64
2553 }
2554 }
2555
2556
2557 // we assume that rax, and rdx can be overwritten
2558 void LIR_Assembler::arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info) {
2559
2560 assert(left->is_single_cpu(), "left must be register");
2561 assert(right->is_single_cpu() || right->is_constant(), "right must be register or constant");
2562 assert(result->is_single_cpu(), "result must be register");
2563
2564 // assert(left->destroys_register(), "check");
2565 // assert(right->destroys_register(), "check");
2566
2567 Register lreg = left->as_register();
2568 Register dreg = result->as_register();
2569
2570 if (right->is_constant()) {
2571 jint divisor = right->as_constant_ptr()->as_jint();
2572 assert(divisor > 0 && is_power_of_2(divisor), "must be");
2573 if (code == lir_idiv) {
2574 assert(lreg == rax, "must be rax,");
2575 assert(temp->as_register() == rdx, "tmp register must be rdx");
2576 __ cdql(); // sign extend into rdx:rax
2577 if (divisor == 2) {
2578 __ subl(lreg, rdx);
2579 } else {
2580 __ andl(rdx, divisor - 1);
2581 __ addl(lreg, rdx);
2582 }
2583 __ sarl(lreg, log2i_exact(divisor));
2584 move_regs(lreg, dreg);
2585 } else if (code == lir_irem) {
2586 Label done;
2587 __ mov(dreg, lreg);
2588 __ andl(dreg, 0x80000000 | (divisor - 1));
2589 __ jcc(Assembler::positive, done);
2590 __ decrement(dreg);
2591 __ orl(dreg, ~(divisor - 1));
2592 __ increment(dreg);
2593 __ bind(done);
2594 } else {
2595 ShouldNotReachHere();
2596 }
2597 } else {
2598 Register rreg = right->as_register();
2599 assert(lreg == rax, "left register must be rax,");
2600 assert(rreg != rdx, "right register must not be rdx");
2601 assert(temp->as_register() == rdx, "tmp register must be rdx");
2602
2603 move_regs(lreg, rax);
2604
2605 int idivl_offset = __ corrected_idivl(rreg);
2606 if (ImplicitDiv0Checks) {
2607 add_debug_info_for_div0(idivl_offset, info);
2608 }
2609 if (code == lir_irem) {
2610 move_regs(rdx, dreg); // result is in rdx
2611 } else {
2612 move_regs(rax, dreg);
2613 }
2614 }
2615 }
2616
2617
2618 void LIR_Assembler::comp_op(LIR_Condition condition, LIR_Opr opr1, LIR_Opr opr2, LIR_Op2* op) {
2619 if (opr1->is_single_cpu()) {
2620 Register reg1 = opr1->as_register();
2621 if (opr2->is_single_cpu()) {
2622 // cpu register - cpu register
2623 if (is_reference_type(opr1->type())) {
2624 __ cmpoop(reg1, opr2->as_register());
2625 } else {
2626 assert(!is_reference_type(opr2->type()), "cmp int, oop?");
2627 __ cmpl(reg1, opr2->as_register());
2628 }
2629 } else if (opr2->is_stack()) {
2630 // cpu register - stack
2631 if (is_reference_type(opr1->type())) {
2632 __ cmpoop(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2633 } else {
2634 __ cmpl(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2635 }
2636 } else if (opr2->is_constant()) {
2637 // cpu register - constant
2638 LIR_Const* c = opr2->as_constant_ptr();
2639 if (c->type() == T_INT) {
2640 jint i = c->as_jint();
2641 if (i == 0) {
2642 __ testl(reg1, reg1);
2643 } else {
2644 __ cmpl(reg1, i);
2645 }
2646 } else if (c->type() == T_METADATA) {
2647 // All we need for now is a comparison with null for equality.
2648 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "oops");
2649 Metadata* m = c->as_metadata();
2650 if (m == nullptr) {
2651 __ testptr(reg1, reg1);
2652 } else {
2653 ShouldNotReachHere();
2654 }
2655 } else if (is_reference_type(c->type())) {
2656 // In 64bit oops are single register
2657 jobject o = c->as_jobject();
2658 if (o == nullptr) {
2659 __ testptr(reg1, reg1);
2660 } else {
2661 __ cmpoop(reg1, o, rscratch1);
2662 }
2663 } else {
2664 fatal("unexpected type: %s", basictype_to_str(c->type()));
2665 }
2666 // cpu register - address
2667 } else if (opr2->is_address()) {
2668 if (op->info() != nullptr) {
2669 add_debug_info_for_null_check_here(op->info());
2670 }
2671 __ cmpl(reg1, as_Address(opr2->as_address_ptr()));
2672 } else {
2673 ShouldNotReachHere();
2674 }
2675
2676 } else if(opr1->is_double_cpu()) {
2677 Register xlo = opr1->as_register_lo();
2678 Register xhi = opr1->as_register_hi();
2679 if (opr2->is_double_cpu()) {
2680 #ifdef _LP64
2681 __ cmpptr(xlo, opr2->as_register_lo());
2682 #else
2683 // cpu register - cpu register
2684 Register ylo = opr2->as_register_lo();
2685 Register yhi = opr2->as_register_hi();
2686 __ subl(xlo, ylo);
2687 __ sbbl(xhi, yhi);
2688 if (condition == lir_cond_equal || condition == lir_cond_notEqual) {
2689 __ orl(xhi, xlo);
2690 }
2691 #endif // _LP64
2692 } else if (opr2->is_constant()) {
2693 // cpu register - constant 0
2694 assert(opr2->as_jlong() == (jlong)0, "only handles zero");
2695 #ifdef _LP64
2696 __ cmpptr(xlo, (int32_t)opr2->as_jlong());
2697 #else
2698 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "only handles equals case");
2699 __ orl(xhi, xlo);
2700 #endif // _LP64
2701 } else {
2702 ShouldNotReachHere();
2703 }
2704
2705 } else if (opr1->is_single_xmm()) {
2706 XMMRegister reg1 = opr1->as_xmm_float_reg();
2707 if (opr2->is_single_xmm()) {
2708 // xmm register - xmm register
2709 __ ucomiss(reg1, opr2->as_xmm_float_reg());
2710 } else if (opr2->is_stack()) {
2711 // xmm register - stack
2712 __ ucomiss(reg1, frame_map()->address_for_slot(opr2->single_stack_ix()));
2713 } else if (opr2->is_constant()) {
2714 // xmm register - constant
2715 __ ucomiss(reg1, InternalAddress(float_constant(opr2->as_jfloat())));
2716 } else if (opr2->is_address()) {
2717 // xmm register - address
2718 if (op->info() != nullptr) {
2719 add_debug_info_for_null_check_here(op->info());
2720 }
2721 __ ucomiss(reg1, as_Address(opr2->as_address_ptr()));
2722 } else {
2723 ShouldNotReachHere();
2724 }
2725
2726 } else if (opr1->is_double_xmm()) {
2727 XMMRegister reg1 = opr1->as_xmm_double_reg();
2728 if (opr2->is_double_xmm()) {
2729 // xmm register - xmm register
2730 __ ucomisd(reg1, opr2->as_xmm_double_reg());
2731 } else if (opr2->is_stack()) {
2732 // xmm register - stack
2733 __ ucomisd(reg1, frame_map()->address_for_slot(opr2->double_stack_ix()));
2734 } else if (opr2->is_constant()) {
2735 // xmm register - constant
2736 __ ucomisd(reg1, InternalAddress(double_constant(opr2->as_jdouble())));
2737 } else if (opr2->is_address()) {
2738 // xmm register - address
2739 if (op->info() != nullptr) {
2740 add_debug_info_for_null_check_here(op->info());
2741 }
2742 __ ucomisd(reg1, as_Address(opr2->pointer()->as_address()));
2743 } else {
2744 ShouldNotReachHere();
2745 }
2746
2747 #ifndef _LP64
2748 } else if(opr1->is_single_fpu() || opr1->is_double_fpu()) {
2749 assert(opr1->is_fpu_register() && opr1->fpu() == 0, "currently left-hand side must be on TOS (relax this restriction)");
2750 assert(opr2->is_fpu_register(), "both must be registers");
2751 __ fcmp(noreg, opr2->fpu(), op->fpu_pop_count() > 0, op->fpu_pop_count() > 1);
2752 #endif // LP64
2753
2754 } else if (opr1->is_address() && opr2->is_constant()) {
2755 LIR_Const* c = opr2->as_constant_ptr();
2756 #ifdef _LP64
2757 if (is_reference_type(c->type())) {
2758 assert(condition == lir_cond_equal || condition == lir_cond_notEqual, "need to reverse");
2759 __ movoop(rscratch1, c->as_jobject());
2760 }
2761 #endif // LP64
2762 if (op->info() != nullptr) {
2763 add_debug_info_for_null_check_here(op->info());
2764 }
2765 // special case: address - constant
2766 LIR_Address* addr = opr1->as_address_ptr();
2767 if (c->type() == T_INT) {
2768 __ cmpl(as_Address(addr), c->as_jint());
2769 } else if (is_reference_type(c->type())) {
2770 #ifdef _LP64
2771 // %%% Make this explode if addr isn't reachable until we figure out a
2772 // better strategy by giving noreg as the temp for as_Address
2773 __ cmpoop(rscratch1, as_Address(addr, noreg));
2774 #else
2775 __ cmpoop(as_Address(addr), c->as_jobject());
2776 #endif // _LP64
2777 } else {
2778 ShouldNotReachHere();
2779 }
2780
2781 } else {
2782 ShouldNotReachHere();
2783 }
2784 }
2785
2786 void LIR_Assembler::comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dst, LIR_Op2* op) {
2787 if (code == lir_cmp_fd2i || code == lir_ucmp_fd2i) {
2788 if (left->is_single_xmm()) {
2789 assert(right->is_single_xmm(), "must match");
2790 __ cmpss2int(left->as_xmm_float_reg(), right->as_xmm_float_reg(), dst->as_register(), code == lir_ucmp_fd2i);
2791 } else if (left->is_double_xmm()) {
2792 assert(right->is_double_xmm(), "must match");
2793 __ cmpsd2int(left->as_xmm_double_reg(), right->as_xmm_double_reg(), dst->as_register(), code == lir_ucmp_fd2i);
2794
2795 } else {
2796 #ifdef _LP64
2797 ShouldNotReachHere();
2798 #else
2799 assert(left->is_single_fpu() || left->is_double_fpu(), "must be");
2800 assert(right->is_single_fpu() || right->is_double_fpu(), "must match");
2801
2802 assert(left->fpu() == 0, "left must be on TOS");
2803 __ fcmp2int(dst->as_register(), code == lir_ucmp_fd2i, right->fpu(),
2804 op->fpu_pop_count() > 0, op->fpu_pop_count() > 1);
2805 #endif // LP64
2806 }
2807 } else {
2808 assert(code == lir_cmp_l2i, "check");
2809 #ifdef _LP64
2810 Label done;
2811 Register dest = dst->as_register();
2812 __ cmpptr(left->as_register_lo(), right->as_register_lo());
2813 __ movl(dest, -1);
2814 __ jccb(Assembler::less, done);
2815 __ setb(Assembler::notZero, dest);
2816 __ movzbl(dest, dest);
2817 __ bind(done);
2818 #else
2819 __ lcmp2int(left->as_register_hi(),
2820 left->as_register_lo(),
2821 right->as_register_hi(),
2822 right->as_register_lo());
2823 move_regs(left->as_register_hi(), dst->as_register());
2824 #endif // _LP64
2825 }
2826 }
2827
2828
2829 void LIR_Assembler::align_call(LIR_Code code) {
2830 // make sure that the displacement word of the call ends up word aligned
2831 int offset = __ offset();
2832 switch (code) {
2833 case lir_static_call:
2834 case lir_optvirtual_call:
2835 case lir_dynamic_call:
2836 offset += NativeCall::displacement_offset;
2837 break;
2838 case lir_icvirtual_call:
2839 offset += NativeCall::displacement_offset + NativeMovConstReg::instruction_size;
2840 break;
2841 default: ShouldNotReachHere();
2842 }
2843 __ align(BytesPerWord, offset);
2844 }
2845
2846
2847 void LIR_Assembler::call(LIR_OpJavaCall* op, relocInfo::relocType rtype) {
2848 assert((__ offset() + NativeCall::displacement_offset) % BytesPerWord == 0,
2849 "must be aligned");
2850 __ call(AddressLiteral(op->addr(), rtype));
2851 add_call_info(code_offset(), op->info());
2852 __ post_call_nop();
2853 }
2854
2855
2856 void LIR_Assembler::ic_call(LIR_OpJavaCall* op) {
2857 __ ic_call(op->addr());
2858 add_call_info(code_offset(), op->info());
2859 assert((__ offset() - NativeCall::instruction_size + NativeCall::displacement_offset) % BytesPerWord == 0,
2860 "must be aligned");
2861 __ post_call_nop();
2862 }
2863
2864
2865 void LIR_Assembler::emit_static_call_stub() {
2866 address call_pc = __ pc();
2867 address stub = __ start_a_stub(call_stub_size());
2868 if (stub == nullptr) {
2869 bailout("static call stub overflow");
2870 return;
2871 }
2872
2873 int start = __ offset();
2874
2875 // make sure that the displacement word of the call ends up word aligned
2876 __ align(BytesPerWord, __ offset() + NativeMovConstReg::instruction_size + NativeCall::displacement_offset);
2877 __ relocate(static_stub_Relocation::spec(call_pc));
2878 __ mov_metadata(rbx, (Metadata*)nullptr);
2879 // must be set to -1 at code generation time
2880 assert(((__ offset() + 1) % BytesPerWord) == 0, "must be aligned");
2881 // On 64bit this will die since it will take a movq & jmp, must be only a jmp
2882 __ jump(RuntimeAddress(__ pc()));
2883
2884 assert(__ offset() - start <= call_stub_size(), "stub too big");
2885 __ end_a_stub();
2886 }
2887
2888
2889 void LIR_Assembler::throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info) {
2890 assert(exceptionOop->as_register() == rax, "must match");
2891 assert(exceptionPC->as_register() == rdx, "must match");
2892
2893 // exception object is not added to oop map by LinearScan
2894 // (LinearScan assumes that no oops are in fixed registers)
2895 info->add_register_oop(exceptionOop);
2896 Runtime1::StubID unwind_id;
2897
2898 // get current pc information
2899 // pc is only needed if the method has an exception handler, the unwind code does not need it.
2900 int pc_for_athrow_offset = __ offset();
2901 InternalAddress pc_for_athrow(__ pc());
2902 __ lea(exceptionPC->as_register(), pc_for_athrow);
2903 add_call_info(pc_for_athrow_offset, info); // for exception handler
2904
2905 __ verify_not_null_oop(rax);
2906 // search an exception handler (rax: exception oop, rdx: throwing pc)
2907 if (compilation()->has_fpu_code()) {
2908 unwind_id = Runtime1::handle_exception_id;
2909 } else {
2910 unwind_id = Runtime1::handle_exception_nofpu_id;
2911 }
2912 __ call(RuntimeAddress(Runtime1::entry_for(unwind_id)));
2913
2914 // enough room for two byte trap
2915 __ nop();
2916 }
2917
2918
2919 void LIR_Assembler::unwind_op(LIR_Opr exceptionOop) {
2920 assert(exceptionOop->as_register() == rax, "must match");
2921
2922 __ jmp(_unwind_handler_entry);
2923 }
2924
2925
2926 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp) {
2927
2928 // optimized version for linear scan:
2929 // * count must be already in ECX (guaranteed by LinearScan)
2930 // * left and dest must be equal
2931 // * tmp must be unused
2932 assert(count->as_register() == SHIFT_count, "count must be in ECX");
2933 assert(left == dest, "left and dest must be equal");
2934 assert(tmp->is_illegal(), "wasting a register if tmp is allocated");
2935
2936 if (left->is_single_cpu()) {
2937 Register value = left->as_register();
2938 assert(value != SHIFT_count, "left cannot be ECX");
2939
2940 switch (code) {
2941 case lir_shl: __ shll(value); break;
2942 case lir_shr: __ sarl(value); break;
2943 case lir_ushr: __ shrl(value); break;
2944 default: ShouldNotReachHere();
2945 }
2946 } else if (left->is_double_cpu()) {
2947 Register lo = left->as_register_lo();
2948 Register hi = left->as_register_hi();
2949 assert(lo != SHIFT_count && hi != SHIFT_count, "left cannot be ECX");
2950 #ifdef _LP64
2951 switch (code) {
2952 case lir_shl: __ shlptr(lo); break;
2953 case lir_shr: __ sarptr(lo); break;
2954 case lir_ushr: __ shrptr(lo); break;
2955 default: ShouldNotReachHere();
2956 }
2957 #else
2958
2959 switch (code) {
2960 case lir_shl: __ lshl(hi, lo); break;
2961 case lir_shr: __ lshr(hi, lo, true); break;
2962 case lir_ushr: __ lshr(hi, lo, false); break;
2963 default: ShouldNotReachHere();
2964 }
2965 #endif // LP64
2966 } else {
2967 ShouldNotReachHere();
2968 }
2969 }
2970
2971
2972 void LIR_Assembler::shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest) {
2973 if (dest->is_single_cpu()) {
2974 // first move left into dest so that left is not destroyed by the shift
2975 Register value = dest->as_register();
2976 count = count & 0x1F; // Java spec
2977
2978 move_regs(left->as_register(), value);
2979 switch (code) {
2980 case lir_shl: __ shll(value, count); break;
2981 case lir_shr: __ sarl(value, count); break;
2982 case lir_ushr: __ shrl(value, count); break;
2983 default: ShouldNotReachHere();
2984 }
2985 } else if (dest->is_double_cpu()) {
2986 #ifndef _LP64
2987 Unimplemented();
2988 #else
2989 // first move left into dest so that left is not destroyed by the shift
2990 Register value = dest->as_register_lo();
2991 count = count & 0x1F; // Java spec
2992
2993 move_regs(left->as_register_lo(), value);
2994 switch (code) {
2995 case lir_shl: __ shlptr(value, count); break;
2996 case lir_shr: __ sarptr(value, count); break;
2997 case lir_ushr: __ shrptr(value, count); break;
2998 default: ShouldNotReachHere();
2999 }
3000 #endif // _LP64
3001 } else {
3002 ShouldNotReachHere();
3003 }
3004 }
3005
3006
3007 void LIR_Assembler::store_parameter(Register r, int offset_from_rsp_in_words) {
3008 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3009 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3010 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3011 __ movptr (Address(rsp, offset_from_rsp_in_bytes), r);
3012 }
3013
3014
3015 void LIR_Assembler::store_parameter(jint c, int offset_from_rsp_in_words) {
3016 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3017 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3018 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3019 __ movptr (Address(rsp, offset_from_rsp_in_bytes), c);
3020 }
3021
3022
3023 void LIR_Assembler::store_parameter(jobject o, int offset_from_rsp_in_words) {
3024 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3025 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3026 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3027 __ movoop(Address(rsp, offset_from_rsp_in_bytes), o, rscratch1);
3028 }
3029
3030
3031 void LIR_Assembler::store_parameter(Metadata* m, int offset_from_rsp_in_words) {
3032 assert(offset_from_rsp_in_words >= 0, "invalid offset from rsp");
3033 int offset_from_rsp_in_bytes = offset_from_rsp_in_words * BytesPerWord;
3034 assert(offset_from_rsp_in_bytes < frame_map()->reserved_argument_area_size(), "invalid offset");
3035 __ mov_metadata(Address(rsp, offset_from_rsp_in_bytes), m, rscratch1);
3036 }
3037
3038
3039 // This code replaces a call to arraycopy; no exception may
3040 // be thrown in this code, they must be thrown in the System.arraycopy
3041 // activation frame; we could save some checks if this would not be the case
3042 void LIR_Assembler::emit_arraycopy(LIR_OpArrayCopy* op) {
3043 ciArrayKlass* default_type = op->expected_type();
3044 Register src = op->src()->as_register();
3045 Register dst = op->dst()->as_register();
3046 Register src_pos = op->src_pos()->as_register();
3047 Register dst_pos = op->dst_pos()->as_register();
3048 Register length = op->length()->as_register();
3049 Register tmp = op->tmp()->as_register();
3050 Register tmp_load_klass = LP64_ONLY(rscratch1) NOT_LP64(noreg);
3051 Register tmp2 = UseCompactObjectHeaders ? rscratch2 : noreg;
3052
3053 CodeStub* stub = op->stub();
3054 int flags = op->flags();
3055 BasicType basic_type = default_type != nullptr ? default_type->element_type()->basic_type() : T_ILLEGAL;
3056 if (is_reference_type(basic_type)) basic_type = T_OBJECT;
3057
3058 // if we don't know anything, just go through the generic arraycopy
3059 if (default_type == nullptr) {
3060 // save outgoing arguments on stack in case call to System.arraycopy is needed
3061 // HACK ALERT. This code used to push the parameters in a hardwired fashion
3062 // for interpreter calling conventions. Now we have to do it in new style conventions.
3063 // For the moment until C1 gets the new register allocator I just force all the
3064 // args to the right place (except the register args) and then on the back side
3065 // reload the register args properly if we go slow path. Yuck
3066
3067 // These are proper for the calling convention
3068 store_parameter(length, 2);
3069 store_parameter(dst_pos, 1);
3070 store_parameter(dst, 0);
3071
3072 // these are just temporary placements until we need to reload
3073 store_parameter(src_pos, 3);
3074 store_parameter(src, 4);
3075 NOT_LP64(assert(src == rcx && src_pos == rdx, "mismatch in calling convention");)
3076
3077 address copyfunc_addr = StubRoutines::generic_arraycopy();
3078 assert(copyfunc_addr != nullptr, "generic arraycopy stub required");
3079
3080 // pass arguments: may push as this is not a safepoint; SP must be fix at each safepoint
3081 #ifdef _LP64
3082 // The arguments are in java calling convention so we can trivially shift them to C
3083 // convention
3084 assert_different_registers(c_rarg0, j_rarg1, j_rarg2, j_rarg3, j_rarg4);
3085 __ mov(c_rarg0, j_rarg0);
3086 assert_different_registers(c_rarg1, j_rarg2, j_rarg3, j_rarg4);
3087 __ mov(c_rarg1, j_rarg1);
3088 assert_different_registers(c_rarg2, j_rarg3, j_rarg4);
3089 __ mov(c_rarg2, j_rarg2);
3090 assert_different_registers(c_rarg3, j_rarg4);
3091 __ mov(c_rarg3, j_rarg3);
3092 #ifdef _WIN64
3093 // Allocate abi space for args but be sure to keep stack aligned
3094 __ subptr(rsp, 6*wordSize);
3095 store_parameter(j_rarg4, 4);
3096 #ifndef PRODUCT
3097 if (PrintC1Statistics) {
3098 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt), rscratch1);
3099 }
3100 #endif
3101 __ call(RuntimeAddress(copyfunc_addr));
3102 __ addptr(rsp, 6*wordSize);
3103 #else
3104 __ mov(c_rarg4, j_rarg4);
3105 #ifndef PRODUCT
3106 if (PrintC1Statistics) {
3107 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt), rscratch1);
3108 }
3109 #endif
3110 __ call(RuntimeAddress(copyfunc_addr));
3111 #endif // _WIN64
3112 #else
3113 __ push(length);
3114 __ push(dst_pos);
3115 __ push(dst);
3116 __ push(src_pos);
3117 __ push(src);
3118
3119 #ifndef PRODUCT
3120 if (PrintC1Statistics) {
3121 __ incrementl(ExternalAddress((address)&Runtime1::_generic_arraycopystub_cnt), rscratch1);
3122 }
3123 #endif
3124 __ call_VM_leaf(copyfunc_addr, 5); // removes pushed parameter from the stack
3125
3126 #endif // _LP64
3127
3128 __ testl(rax, rax);
3129 __ jcc(Assembler::equal, *stub->continuation());
3130
3131 __ mov(tmp, rax);
3132 __ xorl(tmp, -1);
3133
3134 // Reload values from the stack so they are where the stub
3135 // expects them.
3136 __ movptr (dst, Address(rsp, 0*BytesPerWord));
3137 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord));
3138 __ movptr (length, Address(rsp, 2*BytesPerWord));
3139 __ movptr (src_pos, Address(rsp, 3*BytesPerWord));
3140 __ movptr (src, Address(rsp, 4*BytesPerWord));
3141
3142 __ subl(length, tmp);
3143 __ addl(src_pos, tmp);
3144 __ addl(dst_pos, tmp);
3145 __ jmp(*stub->entry());
3146
3147 __ bind(*stub->continuation());
3148 return;
3149 }
3150
3151 assert(default_type != nullptr && default_type->is_array_klass() && default_type->is_loaded(), "must be true at this point");
3152
3153 int elem_size = type2aelembytes(basic_type);
3154 Address::ScaleFactor scale;
3155
3156 switch (elem_size) {
3157 case 1 :
3158 scale = Address::times_1;
3159 break;
3160 case 2 :
3161 scale = Address::times_2;
3162 break;
3163 case 4 :
3164 scale = Address::times_4;
3165 break;
3166 case 8 :
3167 scale = Address::times_8;
3168 break;
3169 default:
3170 scale = Address::no_scale;
3171 ShouldNotReachHere();
3172 }
3173
3174 Address src_length_addr = Address(src, arrayOopDesc::length_offset_in_bytes());
3175 Address dst_length_addr = Address(dst, arrayOopDesc::length_offset_in_bytes());
3176
3177 // length and pos's are all sign extended at this point on 64bit
3178
3179 // test for null
3180 if (flags & LIR_OpArrayCopy::src_null_check) {
3181 __ testptr(src, src);
3182 __ jcc(Assembler::zero, *stub->entry());
3183 }
3184 if (flags & LIR_OpArrayCopy::dst_null_check) {
3185 __ testptr(dst, dst);
3186 __ jcc(Assembler::zero, *stub->entry());
3187 }
3188
3189 // If the compiler was not able to prove that exact type of the source or the destination
3190 // of the arraycopy is an array type, check at runtime if the source or the destination is
3191 // an instance type.
3192 if (flags & LIR_OpArrayCopy::type_check) {
3193 if (!(flags & LIR_OpArrayCopy::dst_objarray)) {
3194 __ load_klass(tmp, dst, tmp_load_klass);
3195 __ cmpl(Address(tmp, in_bytes(Klass::layout_helper_offset())), Klass::_lh_neutral_value);
3196 __ jcc(Assembler::greaterEqual, *stub->entry());
3197 }
3198
3199 if (!(flags & LIR_OpArrayCopy::src_objarray)) {
3200 __ load_klass(tmp, src, tmp_load_klass);
3201 __ cmpl(Address(tmp, in_bytes(Klass::layout_helper_offset())), Klass::_lh_neutral_value);
3202 __ jcc(Assembler::greaterEqual, *stub->entry());
3203 }
3204 }
3205
3206 // check if negative
3207 if (flags & LIR_OpArrayCopy::src_pos_positive_check) {
3208 __ testl(src_pos, src_pos);
3209 __ jcc(Assembler::less, *stub->entry());
3210 }
3211 if (flags & LIR_OpArrayCopy::dst_pos_positive_check) {
3212 __ testl(dst_pos, dst_pos);
3213 __ jcc(Assembler::less, *stub->entry());
3214 }
3215
3216 if (flags & LIR_OpArrayCopy::src_range_check) {
3217 __ lea(tmp, Address(src_pos, length, Address::times_1, 0));
3218 __ cmpl(tmp, src_length_addr);
3219 __ jcc(Assembler::above, *stub->entry());
3220 }
3221 if (flags & LIR_OpArrayCopy::dst_range_check) {
3222 __ lea(tmp, Address(dst_pos, length, Address::times_1, 0));
3223 __ cmpl(tmp, dst_length_addr);
3224 __ jcc(Assembler::above, *stub->entry());
3225 }
3226
3227 if (flags & LIR_OpArrayCopy::length_positive_check) {
3228 __ testl(length, length);
3229 __ jcc(Assembler::less, *stub->entry());
3230 }
3231
3232 #ifdef _LP64
3233 __ movl2ptr(src_pos, src_pos); //higher 32bits must be null
3234 __ movl2ptr(dst_pos, dst_pos); //higher 32bits must be null
3235 #endif
3236
3237 if (flags & LIR_OpArrayCopy::type_check) {
3238 // We don't know the array types are compatible
3239 if (basic_type != T_OBJECT) {
3240 // Simple test for basic type arrays
3241 __ cmp_klass(src, dst, tmp, tmp2);
3242 __ jcc(Assembler::notEqual, *stub->entry());
3243 } else {
3244 // For object arrays, if src is a sub class of dst then we can
3245 // safely do the copy.
3246 Label cont, slow;
3247
3248 __ push(src);
3249 __ push(dst);
3250
3251 __ load_klass(src, src, tmp_load_klass);
3252 __ load_klass(dst, dst, tmp_load_klass);
3253
3254 __ check_klass_subtype_fast_path(src, dst, tmp, &cont, &slow, nullptr);
3255
3256 __ push(src);
3257 __ push(dst);
3258 __ call(RuntimeAddress(Runtime1::entry_for(Runtime1::slow_subtype_check_id)));
3259 __ pop(dst);
3260 __ pop(src);
3261
3262 __ testl(src, src);
3263 __ jcc(Assembler::notEqual, cont);
3264
3265 __ bind(slow);
3266 __ pop(dst);
3267 __ pop(src);
3268
3269 address copyfunc_addr = StubRoutines::checkcast_arraycopy();
3270 if (copyfunc_addr != nullptr) { // use stub if available
3271 // src is not a sub class of dst so we have to do a
3272 // per-element check.
3273
3274 int mask = LIR_OpArrayCopy::src_objarray|LIR_OpArrayCopy::dst_objarray;
3275 if ((flags & mask) != mask) {
3276 // Check that at least both of them object arrays.
3277 assert(flags & mask, "one of the two should be known to be an object array");
3278
3279 if (!(flags & LIR_OpArrayCopy::src_objarray)) {
3280 __ load_klass(tmp, src, tmp_load_klass);
3281 } else if (!(flags & LIR_OpArrayCopy::dst_objarray)) {
3282 __ load_klass(tmp, dst, tmp_load_klass);
3283 }
3284 int lh_offset = in_bytes(Klass::layout_helper_offset());
3285 Address klass_lh_addr(tmp, lh_offset);
3286 jint objArray_lh = Klass::array_layout_helper(T_OBJECT);
3287 __ cmpl(klass_lh_addr, objArray_lh);
3288 __ jcc(Assembler::notEqual, *stub->entry());
3289 }
3290
3291 // Spill because stubs can use any register they like and it's
3292 // easier to restore just those that we care about.
3293 store_parameter(dst, 0);
3294 store_parameter(dst_pos, 1);
3295 store_parameter(length, 2);
3296 store_parameter(src_pos, 3);
3297 store_parameter(src, 4);
3298
3299 #ifndef _LP64
3300 Address dst_klass_addr = Address(dst, oopDesc::klass_offset_in_bytes());
3301 __ movptr(tmp, dst_klass_addr);
3302 __ movptr(tmp, Address(tmp, ObjArrayKlass::element_klass_offset()));
3303 __ push(tmp);
3304 __ movl(tmp, Address(tmp, Klass::super_check_offset_offset()));
3305 __ push(tmp);
3306 __ push(length);
3307 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3308 __ push(tmp);
3309 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3310 __ push(tmp);
3311
3312 __ call_VM_leaf(copyfunc_addr, 5);
3313 #else
3314 __ movl2ptr(length, length); //higher 32bits must be null
3315
3316 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3317 assert_different_registers(c_rarg0, dst, dst_pos, length);
3318 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3319 assert_different_registers(c_rarg1, dst, length);
3320
3321 __ mov(c_rarg2, length);
3322 assert_different_registers(c_rarg2, dst);
3323
3324 #ifdef _WIN64
3325 // Allocate abi space for args but be sure to keep stack aligned
3326 __ subptr(rsp, 6*wordSize);
3327 __ load_klass(c_rarg3, dst, tmp_load_klass);
3328 __ movptr(c_rarg3, Address(c_rarg3, ObjArrayKlass::element_klass_offset()));
3329 store_parameter(c_rarg3, 4);
3330 __ movl(c_rarg3, Address(c_rarg3, Klass::super_check_offset_offset()));
3331 __ call(RuntimeAddress(copyfunc_addr));
3332 __ addptr(rsp, 6*wordSize);
3333 #else
3334 __ load_klass(c_rarg4, dst, tmp_load_klass);
3335 __ movptr(c_rarg4, Address(c_rarg4, ObjArrayKlass::element_klass_offset()));
3336 __ movl(c_rarg3, Address(c_rarg4, Klass::super_check_offset_offset()));
3337 __ call(RuntimeAddress(copyfunc_addr));
3338 #endif
3339
3340 #endif
3341
3342 #ifndef PRODUCT
3343 if (PrintC1Statistics) {
3344 Label failed;
3345 __ testl(rax, rax);
3346 __ jcc(Assembler::notZero, failed);
3347 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_cnt), rscratch1);
3348 __ bind(failed);
3349 }
3350 #endif
3351
3352 __ testl(rax, rax);
3353 __ jcc(Assembler::zero, *stub->continuation());
3354
3355 #ifndef PRODUCT
3356 if (PrintC1Statistics) {
3357 __ incrementl(ExternalAddress((address)&Runtime1::_arraycopy_checkcast_attempt_cnt), rscratch1);
3358 }
3359 #endif
3360
3361 __ mov(tmp, rax);
3362
3363 __ xorl(tmp, -1);
3364
3365 // Restore previously spilled arguments
3366 __ movptr (dst, Address(rsp, 0*BytesPerWord));
3367 __ movptr (dst_pos, Address(rsp, 1*BytesPerWord));
3368 __ movptr (length, Address(rsp, 2*BytesPerWord));
3369 __ movptr (src_pos, Address(rsp, 3*BytesPerWord));
3370 __ movptr (src, Address(rsp, 4*BytesPerWord));
3371
3372
3373 __ subl(length, tmp);
3374 __ addl(src_pos, tmp);
3375 __ addl(dst_pos, tmp);
3376 }
3377
3378 __ jmp(*stub->entry());
3379
3380 __ bind(cont);
3381 __ pop(dst);
3382 __ pop(src);
3383 }
3384 }
3385
3386 #ifdef ASSERT
3387 if (basic_type != T_OBJECT || !(flags & LIR_OpArrayCopy::type_check)) {
3388 // Sanity check the known type with the incoming class. For the
3389 // primitive case the types must match exactly with src.klass and
3390 // dst.klass each exactly matching the default type. For the
3391 // object array case, if no type check is needed then either the
3392 // dst type is exactly the expected type and the src type is a
3393 // subtype which we can't check or src is the same array as dst
3394 // but not necessarily exactly of type default_type.
3395 Label known_ok, halt;
3396 __ mov_metadata(tmp, default_type->constant_encoding());
3397 #ifdef _LP64
3398 if (UseCompressedClassPointers) {
3399 __ encode_klass_not_null(tmp, rscratch1);
3400 }
3401 #endif
3402
3403 if (basic_type != T_OBJECT) {
3404 __ cmp_klass(tmp, dst, tmp2);
3405 __ jcc(Assembler::notEqual, halt);
3406 __ cmp_klass(tmp, src, tmp2);
3407 __ jcc(Assembler::equal, known_ok);
3408 } else {
3409 __ cmp_klass(tmp, dst, tmp2);
3410 __ jcc(Assembler::equal, known_ok);
3411 __ cmpptr(src, dst);
3412 __ jcc(Assembler::equal, known_ok);
3413 }
3414 __ bind(halt);
3415 __ stop("incorrect type information in arraycopy");
3416 __ bind(known_ok);
3417 }
3418 #endif
3419
3420 #ifndef PRODUCT
3421 if (PrintC1Statistics) {
3422 __ incrementl(ExternalAddress(Runtime1::arraycopy_count_address(basic_type)), rscratch1);
3423 }
3424 #endif
3425
3426 #ifdef _LP64
3427 assert_different_registers(c_rarg0, dst, dst_pos, length);
3428 __ lea(c_rarg0, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3429 assert_different_registers(c_rarg1, length);
3430 __ lea(c_rarg1, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3431 __ mov(c_rarg2, length);
3432
3433 #else
3434 __ lea(tmp, Address(src, src_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3435 store_parameter(tmp, 0);
3436 __ lea(tmp, Address(dst, dst_pos, scale, arrayOopDesc::base_offset_in_bytes(basic_type)));
3437 store_parameter(tmp, 1);
3438 store_parameter(length, 2);
3439 #endif // _LP64
3440
3441 bool disjoint = (flags & LIR_OpArrayCopy::overlapping) == 0;
3442 bool aligned = (flags & LIR_OpArrayCopy::unaligned) == 0;
3443 const char *name;
3444 address entry = StubRoutines::select_arraycopy_function(basic_type, aligned, disjoint, name, false);
3445 __ call_VM_leaf(entry, 0);
3446
3447 if (stub != nullptr) {
3448 __ bind(*stub->continuation());
3449 }
3450 }
3451
3452 void LIR_Assembler::emit_updatecrc32(LIR_OpUpdateCRC32* op) {
3453 assert(op->crc()->is_single_cpu(), "crc must be register");
3454 assert(op->val()->is_single_cpu(), "byte value must be register");
3455 assert(op->result_opr()->is_single_cpu(), "result must be register");
3456 Register crc = op->crc()->as_register();
3457 Register val = op->val()->as_register();
3458 Register res = op->result_opr()->as_register();
3459
3460 assert_different_registers(val, crc, res);
3461
3462 __ lea(res, ExternalAddress(StubRoutines::crc_table_addr()));
3463 __ notl(crc); // ~crc
3464 __ update_byte_crc32(crc, val, res);
3465 __ notl(crc); // ~crc
3466 __ mov(res, crc);
3467 }
3468
3469 void LIR_Assembler::emit_lock(LIR_OpLock* op) {
3470 Register obj = op->obj_opr()->as_register(); // may not be an oop
3471 Register hdr = op->hdr_opr()->as_register();
3472 Register lock = op->lock_opr()->as_register();
3473 if (LockingMode == LM_MONITOR) {
3474 if (op->info() != nullptr) {
3475 add_debug_info_for_null_check_here(op->info());
3476 __ null_check(obj);
3477 }
3478 __ jmp(*op->stub()->entry());
3479 } else if (op->code() == lir_lock) {
3480 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
3481 Register tmp = LockingMode == LM_LIGHTWEIGHT ? op->scratch_opr()->as_register() : noreg;
3482 // add debug info for NullPointerException only if one is possible
3483 int null_check_offset = __ lock_object(hdr, obj, lock, tmp, *op->stub()->entry());
3484 if (op->info() != nullptr) {
3485 add_debug_info_for_null_check(null_check_offset, op->info());
3486 }
3487 // done
3488 } else if (op->code() == lir_unlock) {
3489 assert(BasicLock::displaced_header_offset_in_bytes() == 0, "lock_reg must point to the displaced header");
3490 __ unlock_object(hdr, obj, lock, *op->stub()->entry());
3491 } else {
3492 Unimplemented();
3493 }
3494 __ bind(*op->stub()->continuation());
3495 }
3496
3497 void LIR_Assembler::emit_load_klass(LIR_OpLoadKlass* op) {
3498 Register obj = op->obj()->as_pointer_register();
3499 Register result = op->result_opr()->as_pointer_register();
3500
3501 CodeEmitInfo* info = op->info();
3502 if (info != nullptr) {
3503 add_debug_info_for_null_check_here(info);
3504 }
3505
3506 #ifdef _LP64
3507 if (UseCompactObjectHeaders) {
3508 Register tmp = rscratch1;
3509 assert_different_registers(tmp, obj);
3510 assert_different_registers(tmp, result);
3511
3512 __ movq(result, Address(obj, oopDesc::mark_offset_in_bytes()));
3513 __ shrq(result, markWord::klass_shift);
3514 __ decode_klass_not_null(result, tmp);
3515 } else if (UseCompressedClassPointers) {
3516 __ movl(result, Address(obj, oopDesc::klass_offset_in_bytes()));
3517 __ decode_klass_not_null(result, rscratch1);
3518 } else
3519 #endif
3520 {
3521 __ movptr(result, Address(obj, oopDesc::klass_offset_in_bytes()));
3522 }
3523 }
3524
3525 void LIR_Assembler::emit_profile_call(LIR_OpProfileCall* op) {
3526 ciMethod* method = op->profiled_method();
3527 int bci = op->profiled_bci();
3528 ciMethod* callee = op->profiled_callee();
3529 Register tmp_load_klass = LP64_ONLY(rscratch1) NOT_LP64(noreg);
3530
3531 // Update counter for all call types
3532 ciMethodData* md = method->method_data_or_null();
3533 assert(md != nullptr, "Sanity");
3534 ciProfileData* data = md->bci_to_data(bci);
3535 assert(data != nullptr && data->is_CounterData(), "need CounterData for calls");
3536 assert(op->mdo()->is_single_cpu(), "mdo must be allocated");
3537 Register mdo = op->mdo()->as_register();
3538 __ mov_metadata(mdo, md->constant_encoding());
3539 Address counter_addr(mdo, md->byte_offset_of_slot(data, CounterData::count_offset()));
3540 // Perform additional virtual call profiling for invokevirtual and
3541 // invokeinterface bytecodes
3542 if (op->should_profile_receiver_type()) {
3543 assert(op->recv()->is_single_cpu(), "recv must be allocated");
3544 Register recv = op->recv()->as_register();
3545 assert_different_registers(mdo, recv);
3546 assert(data->is_VirtualCallData(), "need VirtualCallData for virtual calls");
3547 ciKlass* known_klass = op->known_holder();
3548 if (C1OptimizeVirtualCallProfiling && known_klass != nullptr) {
3549 // We know the type that will be seen at this call site; we can
3550 // statically update the MethodData* rather than needing to do
3551 // dynamic tests on the receiver type
3552
3553 // NOTE: we should probably put a lock around this search to
3554 // avoid collisions by concurrent compilations
3555 ciVirtualCallData* vc_data = (ciVirtualCallData*) data;
3556 uint i;
3557 for (i = 0; i < VirtualCallData::row_limit(); i++) {
3558 ciKlass* receiver = vc_data->receiver(i);
3559 if (known_klass->equals(receiver)) {
3560 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
3561 __ addptr(data_addr, DataLayout::counter_increment);
3562 return;
3563 }
3564 }
3565
3566 // Receiver type not found in profile data; select an empty slot
3567
3568 // Note that this is less efficient than it should be because it
3569 // always does a write to the receiver part of the
3570 // VirtualCallData rather than just the first time
3571 for (i = 0; i < VirtualCallData::row_limit(); i++) {
3572 ciKlass* receiver = vc_data->receiver(i);
3573 if (receiver == nullptr) {
3574 Address recv_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_offset(i)));
3575 __ mov_metadata(recv_addr, known_klass->constant_encoding(), rscratch1);
3576 Address data_addr(mdo, md->byte_offset_of_slot(data, VirtualCallData::receiver_count_offset(i)));
3577 __ addptr(data_addr, DataLayout::counter_increment);
3578 return;
3579 }
3580 }
3581 } else {
3582 __ load_klass(recv, recv, tmp_load_klass);
3583 Label update_done;
3584 type_profile_helper(mdo, md, data, recv, &update_done);
3585 // Receiver did not match any saved receiver and there is no empty row for it.
3586 // Increment total counter to indicate polymorphic case.
3587 __ addptr(counter_addr, DataLayout::counter_increment);
3588
3589 __ bind(update_done);
3590 }
3591 } else {
3592 // Static call
3593 __ addptr(counter_addr, DataLayout::counter_increment);
3594 }
3595 }
3596
3597 void LIR_Assembler::emit_profile_type(LIR_OpProfileType* op) {
3598 Register obj = op->obj()->as_register();
3599 Register tmp = op->tmp()->as_pointer_register();
3600 Register tmp_load_klass = LP64_ONLY(rscratch1) NOT_LP64(noreg);
3601 Address mdo_addr = as_Address(op->mdp()->as_address_ptr());
3602 ciKlass* exact_klass = op->exact_klass();
3603 intptr_t current_klass = op->current_klass();
3604 bool not_null = op->not_null();
3605 bool no_conflict = op->no_conflict();
3606
3607 Label update, next, none;
3608
3609 bool do_null = !not_null;
3610 bool exact_klass_set = exact_klass != nullptr && ciTypeEntries::valid_ciklass(current_klass) == exact_klass;
3611 bool do_update = !TypeEntries::is_type_unknown(current_klass) && !exact_klass_set;
3612
3613 assert(do_null || do_update, "why are we here?");
3614 assert(!TypeEntries::was_null_seen(current_klass) || do_update, "why are we here?");
3615
3616 __ verify_oop(obj);
3617
3618 #ifdef ASSERT
3619 if (obj == tmp) {
3620 #ifdef _LP64
3621 assert_different_registers(obj, rscratch1, mdo_addr.base(), mdo_addr.index());
3622 #else
3623 assert_different_registers(obj, mdo_addr.base(), mdo_addr.index());
3624 #endif
3625 } else {
3626 #ifdef _LP64
3627 assert_different_registers(obj, tmp, rscratch1, mdo_addr.base(), mdo_addr.index());
3628 #else
3629 assert_different_registers(obj, tmp, mdo_addr.base(), mdo_addr.index());
3630 #endif
3631 }
3632 #endif
3633 if (do_null) {
3634 __ testptr(obj, obj);
3635 __ jccb(Assembler::notZero, update);
3636 if (!TypeEntries::was_null_seen(current_klass)) {
3637 __ testptr(mdo_addr, TypeEntries::null_seen);
3638 #ifndef ASSERT
3639 __ jccb(Assembler::notZero, next); // already set
3640 #else
3641 __ jcc(Assembler::notZero, next); // already set
3642 #endif
3643 // atomic update to prevent overwriting Klass* with 0
3644 __ lock();
3645 __ orptr(mdo_addr, TypeEntries::null_seen);
3646 }
3647 if (do_update) {
3648 #ifndef ASSERT
3649 __ jmpb(next);
3650 }
3651 #else
3652 __ jmp(next);
3653 }
3654 } else {
3655 __ testptr(obj, obj);
3656 __ jcc(Assembler::notZero, update);
3657 __ stop("unexpected null obj");
3658 #endif
3659 }
3660
3661 __ bind(update);
3662
3663 if (do_update) {
3664 #ifdef ASSERT
3665 if (exact_klass != nullptr) {
3666 Label ok;
3667 __ load_klass(tmp, obj, tmp_load_klass);
3668 __ push(tmp);
3669 __ mov_metadata(tmp, exact_klass->constant_encoding());
3670 __ cmpptr(tmp, Address(rsp, 0));
3671 __ jcc(Assembler::equal, ok);
3672 __ stop("exact klass and actual klass differ");
3673 __ bind(ok);
3674 __ pop(tmp);
3675 }
3676 #endif
3677 if (!no_conflict) {
3678 if (exact_klass == nullptr || TypeEntries::is_type_none(current_klass)) {
3679 if (exact_klass != nullptr) {
3680 __ mov_metadata(tmp, exact_klass->constant_encoding());
3681 } else {
3682 __ load_klass(tmp, obj, tmp_load_klass);
3683 }
3684 #ifdef _LP64
3685 __ mov(rscratch1, tmp); // save original value before XOR
3686 #endif
3687 __ xorptr(tmp, mdo_addr);
3688 __ testptr(tmp, TypeEntries::type_klass_mask);
3689 // klass seen before, nothing to do. The unknown bit may have been
3690 // set already but no need to check.
3691 __ jccb(Assembler::zero, next);
3692
3693 __ testptr(tmp, TypeEntries::type_unknown);
3694 __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
3695
3696 if (TypeEntries::is_type_none(current_klass)) {
3697 __ testptr(mdo_addr, TypeEntries::type_mask);
3698 __ jccb(Assembler::zero, none);
3699 #ifdef _LP64
3700 // There is a chance that the checks above (re-reading profiling
3701 // data from memory) fail if another thread has just set the
3702 // profiling to this obj's klass
3703 __ mov(tmp, rscratch1); // get back original value before XOR
3704 __ xorptr(tmp, mdo_addr);
3705 __ testptr(tmp, TypeEntries::type_klass_mask);
3706 __ jccb(Assembler::zero, next);
3707 #endif
3708 }
3709 } else {
3710 assert(ciTypeEntries::valid_ciklass(current_klass) != nullptr &&
3711 ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "conflict only");
3712
3713 __ testptr(mdo_addr, TypeEntries::type_unknown);
3714 __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
3715 }
3716
3717 // different than before. Cannot keep accurate profile.
3718 __ orptr(mdo_addr, TypeEntries::type_unknown);
3719
3720 if (TypeEntries::is_type_none(current_klass)) {
3721 __ jmpb(next);
3722
3723 __ bind(none);
3724 // first time here. Set profile type.
3725 __ movptr(mdo_addr, tmp);
3726 #ifdef ASSERT
3727 __ andptr(tmp, TypeEntries::type_klass_mask);
3728 __ verify_klass_ptr(tmp);
3729 #endif
3730 }
3731 } else {
3732 // There's a single possible klass at this profile point
3733 assert(exact_klass != nullptr, "should be");
3734 if (TypeEntries::is_type_none(current_klass)) {
3735 __ mov_metadata(tmp, exact_klass->constant_encoding());
3736 __ xorptr(tmp, mdo_addr);
3737 __ testptr(tmp, TypeEntries::type_klass_mask);
3738 #ifdef ASSERT
3739 __ jcc(Assembler::zero, next);
3740
3741 {
3742 Label ok;
3743 __ push(tmp);
3744 __ testptr(mdo_addr, TypeEntries::type_mask);
3745 __ jcc(Assembler::zero, ok);
3746 // may have been set by another thread
3747 __ mov_metadata(tmp, exact_klass->constant_encoding());
3748 __ xorptr(tmp, mdo_addr);
3749 __ testptr(tmp, TypeEntries::type_mask);
3750 __ jcc(Assembler::zero, ok);
3751
3752 __ stop("unexpected profiling mismatch");
3753 __ bind(ok);
3754 __ pop(tmp);
3755 }
3756 #else
3757 __ jccb(Assembler::zero, next);
3758 #endif
3759 // first time here. Set profile type.
3760 __ movptr(mdo_addr, tmp);
3761 #ifdef ASSERT
3762 __ andptr(tmp, TypeEntries::type_klass_mask);
3763 __ verify_klass_ptr(tmp);
3764 #endif
3765 } else {
3766 assert(ciTypeEntries::valid_ciklass(current_klass) != nullptr &&
3767 ciTypeEntries::valid_ciklass(current_klass) != exact_klass, "inconsistent");
3768
3769 __ testptr(mdo_addr, TypeEntries::type_unknown);
3770 __ jccb(Assembler::notZero, next); // already unknown. Nothing to do anymore.
3771
3772 __ orptr(mdo_addr, TypeEntries::type_unknown);
3773 }
3774 }
3775 }
3776 __ bind(next);
3777 }
3778
3779 void LIR_Assembler::emit_delay(LIR_OpDelay*) {
3780 Unimplemented();
3781 }
3782
3783
3784 void LIR_Assembler::monitor_address(int monitor_no, LIR_Opr dst) {
3785 __ lea(dst->as_register(), frame_map()->address_for_monitor_lock(monitor_no));
3786 }
3787
3788
3789 void LIR_Assembler::align_backward_branch_target() {
3790 __ align(BytesPerWord);
3791 }
3792
3793
3794 void LIR_Assembler::negate(LIR_Opr left, LIR_Opr dest, LIR_Opr tmp) {
3795 if (left->is_single_cpu()) {
3796 __ negl(left->as_register());
3797 move_regs(left->as_register(), dest->as_register());
3798
3799 } else if (left->is_double_cpu()) {
3800 Register lo = left->as_register_lo();
3801 #ifdef _LP64
3802 Register dst = dest->as_register_lo();
3803 __ movptr(dst, lo);
3804 __ negptr(dst);
3805 #else
3806 Register hi = left->as_register_hi();
3807 __ lneg(hi, lo);
3808 if (dest->as_register_lo() == hi) {
3809 assert(dest->as_register_hi() != lo, "destroying register");
3810 move_regs(hi, dest->as_register_hi());
3811 move_regs(lo, dest->as_register_lo());
3812 } else {
3813 move_regs(lo, dest->as_register_lo());
3814 move_regs(hi, dest->as_register_hi());
3815 }
3816 #endif // _LP64
3817
3818 } else if (dest->is_single_xmm()) {
3819 #ifdef _LP64
3820 if (UseAVX > 2 && !VM_Version::supports_avx512vl()) {
3821 assert(tmp->is_valid(), "need temporary");
3822 assert_different_registers(left->as_xmm_float_reg(), tmp->as_xmm_float_reg());
3823 __ vpxor(dest->as_xmm_float_reg(), tmp->as_xmm_float_reg(), left->as_xmm_float_reg(), 2);
3824 }
3825 else
3826 #endif
3827 {
3828 assert(!tmp->is_valid(), "do not need temporary");
3829 if (left->as_xmm_float_reg() != dest->as_xmm_float_reg()) {
3830 __ movflt(dest->as_xmm_float_reg(), left->as_xmm_float_reg());
3831 }
3832 __ xorps(dest->as_xmm_float_reg(),
3833 ExternalAddress((address)float_signflip_pool),
3834 rscratch1);
3835 }
3836 } else if (dest->is_double_xmm()) {
3837 #ifdef _LP64
3838 if (UseAVX > 2 && !VM_Version::supports_avx512vl()) {
3839 assert(tmp->is_valid(), "need temporary");
3840 assert_different_registers(left->as_xmm_double_reg(), tmp->as_xmm_double_reg());
3841 __ vpxor(dest->as_xmm_double_reg(), tmp->as_xmm_double_reg(), left->as_xmm_double_reg(), 2);
3842 }
3843 else
3844 #endif
3845 {
3846 assert(!tmp->is_valid(), "do not need temporary");
3847 if (left->as_xmm_double_reg() != dest->as_xmm_double_reg()) {
3848 __ movdbl(dest->as_xmm_double_reg(), left->as_xmm_double_reg());
3849 }
3850 __ xorpd(dest->as_xmm_double_reg(),
3851 ExternalAddress((address)double_signflip_pool),
3852 rscratch1);
3853 }
3854 #ifndef _LP64
3855 } else if (left->is_single_fpu() || left->is_double_fpu()) {
3856 assert(left->fpu() == 0, "arg must be on TOS");
3857 assert(dest->fpu() == 0, "dest must be TOS");
3858 __ fchs();
3859 #endif // !_LP64
3860
3861 } else {
3862 ShouldNotReachHere();
3863 }
3864 }
3865
3866
3867 void LIR_Assembler::leal(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info) {
3868 assert(src->is_address(), "must be an address");
3869 assert(dest->is_register(), "must be a register");
3870
3871 PatchingStub* patch = nullptr;
3872 if (patch_code != lir_patch_none) {
3873 patch = new PatchingStub(_masm, PatchingStub::access_field_id);
3874 }
3875
3876 Register reg = dest->as_pointer_register();
3877 LIR_Address* addr = src->as_address_ptr();
3878 __ lea(reg, as_Address(addr));
3879
3880 if (patch != nullptr) {
3881 patching_epilog(patch, patch_code, addr->base()->as_register(), info);
3882 }
3883 }
3884
3885
3886
3887 void LIR_Assembler::rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info) {
3888 assert(!tmp->is_valid(), "don't need temporary");
3889 __ call(RuntimeAddress(dest));
3890 if (info != nullptr) {
3891 add_call_info_here(info);
3892 }
3893 __ post_call_nop();
3894 }
3895
3896
3897 void LIR_Assembler::volatile_move_op(LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info) {
3898 assert(type == T_LONG, "only for volatile long fields");
3899
3900 if (info != nullptr) {
3901 add_debug_info_for_null_check_here(info);
3902 }
3903
3904 if (src->is_double_xmm()) {
3905 if (dest->is_double_cpu()) {
3906 #ifdef _LP64
3907 __ movdq(dest->as_register_lo(), src->as_xmm_double_reg());
3908 #else
3909 __ movdl(dest->as_register_lo(), src->as_xmm_double_reg());
3910 __ psrlq(src->as_xmm_double_reg(), 32);
3911 __ movdl(dest->as_register_hi(), src->as_xmm_double_reg());
3912 #endif // _LP64
3913 } else if (dest->is_double_stack()) {
3914 __ movdbl(frame_map()->address_for_slot(dest->double_stack_ix()), src->as_xmm_double_reg());
3915 } else if (dest->is_address()) {
3916 __ movdbl(as_Address(dest->as_address_ptr()), src->as_xmm_double_reg());
3917 } else {
3918 ShouldNotReachHere();
3919 }
3920
3921 } else if (dest->is_double_xmm()) {
3922 if (src->is_double_stack()) {
3923 __ movdbl(dest->as_xmm_double_reg(), frame_map()->address_for_slot(src->double_stack_ix()));
3924 } else if (src->is_address()) {
3925 __ movdbl(dest->as_xmm_double_reg(), as_Address(src->as_address_ptr()));
3926 } else {
3927 ShouldNotReachHere();
3928 }
3929
3930 #ifndef _LP64
3931 } else if (src->is_double_fpu()) {
3932 assert(src->fpu_regnrLo() == 0, "must be TOS");
3933 if (dest->is_double_stack()) {
3934 __ fistp_d(frame_map()->address_for_slot(dest->double_stack_ix()));
3935 } else if (dest->is_address()) {
3936 __ fistp_d(as_Address(dest->as_address_ptr()));
3937 } else {
3938 ShouldNotReachHere();
3939 }
3940
3941 } else if (dest->is_double_fpu()) {
3942 assert(dest->fpu_regnrLo() == 0, "must be TOS");
3943 if (src->is_double_stack()) {
3944 __ fild_d(frame_map()->address_for_slot(src->double_stack_ix()));
3945 } else if (src->is_address()) {
3946 __ fild_d(as_Address(src->as_address_ptr()));
3947 } else {
3948 ShouldNotReachHere();
3949 }
3950 #endif // !_LP64
3951
3952 } else {
3953 ShouldNotReachHere();
3954 }
3955 }
3956
3957 #ifdef ASSERT
3958 // emit run-time assertion
3959 void LIR_Assembler::emit_assert(LIR_OpAssert* op) {
3960 assert(op->code() == lir_assert, "must be");
3961
3962 if (op->in_opr1()->is_valid()) {
3963 assert(op->in_opr2()->is_valid(), "both operands must be valid");
3964 comp_op(op->condition(), op->in_opr1(), op->in_opr2(), op);
3965 } else {
3966 assert(op->in_opr2()->is_illegal(), "both operands must be illegal");
3967 assert(op->condition() == lir_cond_always, "no other conditions allowed");
3968 }
3969
3970 Label ok;
3971 if (op->condition() != lir_cond_always) {
3972 Assembler::Condition acond = Assembler::zero;
3973 switch (op->condition()) {
3974 case lir_cond_equal: acond = Assembler::equal; break;
3975 case lir_cond_notEqual: acond = Assembler::notEqual; break;
3976 case lir_cond_less: acond = Assembler::less; break;
3977 case lir_cond_lessEqual: acond = Assembler::lessEqual; break;
3978 case lir_cond_greaterEqual: acond = Assembler::greaterEqual;break;
3979 case lir_cond_greater: acond = Assembler::greater; break;
3980 case lir_cond_belowEqual: acond = Assembler::belowEqual; break;
3981 case lir_cond_aboveEqual: acond = Assembler::aboveEqual; break;
3982 default: ShouldNotReachHere();
3983 }
3984 __ jcc(acond, ok);
3985 }
3986 if (op->halt()) {
3987 const char* str = __ code_string(op->msg());
3988 __ stop(str);
3989 } else {
3990 breakpoint();
3991 }
3992 __ bind(ok);
3993 }
3994 #endif
3995
3996 void LIR_Assembler::membar() {
3997 // QQQ sparc TSO uses this,
3998 __ membar( Assembler::Membar_mask_bits(Assembler::StoreLoad));
3999 }
4000
4001 void LIR_Assembler::membar_acquire() {
4002 // No x86 machines currently require load fences
4003 }
4004
4005 void LIR_Assembler::membar_release() {
4006 // No x86 machines currently require store fences
4007 }
4008
4009 void LIR_Assembler::membar_loadload() {
4010 // no-op
4011 //__ membar(Assembler::Membar_mask_bits(Assembler::loadload));
4012 }
4013
4014 void LIR_Assembler::membar_storestore() {
4015 // no-op
4016 //__ membar(Assembler::Membar_mask_bits(Assembler::storestore));
4017 }
4018
4019 void LIR_Assembler::membar_loadstore() {
4020 // no-op
4021 //__ membar(Assembler::Membar_mask_bits(Assembler::loadstore));
4022 }
4023
4024 void LIR_Assembler::membar_storeload() {
4025 __ membar(Assembler::Membar_mask_bits(Assembler::StoreLoad));
4026 }
4027
4028 void LIR_Assembler::on_spin_wait() {
4029 __ pause ();
4030 }
4031
4032 void LIR_Assembler::get_thread(LIR_Opr result_reg) {
4033 assert(result_reg->is_register(), "check");
4034 #ifdef _LP64
4035 // __ get_thread(result_reg->as_register_lo());
4036 __ mov(result_reg->as_register(), r15_thread);
4037 #else
4038 __ get_thread(result_reg->as_register());
4039 #endif // _LP64
4040 }
4041
4042
4043 void LIR_Assembler::peephole(LIR_List*) {
4044 // do nothing for now
4045 }
4046
4047 void LIR_Assembler::atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp) {
4048 assert(data == dest, "xchg/xadd uses only 2 operands");
4049
4050 if (data->type() == T_INT) {
4051 if (code == lir_xadd) {
4052 __ lock();
4053 __ xaddl(as_Address(src->as_address_ptr()), data->as_register());
4054 } else {
4055 __ xchgl(data->as_register(), as_Address(src->as_address_ptr()));
4056 }
4057 } else if (data->is_oop()) {
4058 assert (code == lir_xchg, "xadd for oops");
4059 Register obj = data->as_register();
4060 #ifdef _LP64
4061 if (UseCompressedOops) {
4062 __ encode_heap_oop(obj);
4063 __ xchgl(obj, as_Address(src->as_address_ptr()));
4064 __ decode_heap_oop(obj);
4065 } else {
4066 __ xchgptr(obj, as_Address(src->as_address_ptr()));
4067 }
4068 #else
4069 __ xchgl(obj, as_Address(src->as_address_ptr()));
4070 #endif
4071 } else if (data->type() == T_LONG) {
4072 #ifdef _LP64
4073 assert(data->as_register_lo() == data->as_register_hi(), "should be a single register");
4074 if (code == lir_xadd) {
4075 __ lock();
4076 __ xaddq(as_Address(src->as_address_ptr()), data->as_register_lo());
4077 } else {
4078 __ xchgq(data->as_register_lo(), as_Address(src->as_address_ptr()));
4079 }
4080 #else
4081 ShouldNotReachHere();
4082 #endif
4083 } else {
4084 ShouldNotReachHere();
4085 }
4086 }
4087
4088 #undef __