< prev index next > src/hotspot/cpu/aarch64/aarch64.ad
Print this page
// stp(zr, rscratch2, Address(__ pre(sp, -2 * wordSize)))
// blr(rscratch1)
CodeBlob *cb = CodeCache::find_blob(_entry_point);
if (cb) {
return 1 * NativeInstruction::instruction_size;
+ } else if (_entry_point == NULL) {
+ // See CallLeafNoFPIndirect
+ return 1 * NativeInstruction::instruction_size;
} else {
return 6 * NativeInstruction::instruction_size;
}
}
void MachPrologNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
Compile* C = ra_->C;
C2_MacroAssembler _masm(&cbuf);
- // n.b. frame size includes space for return pc and rfp
- const int framesize = C->output()->frame_size_in_bytes();
-
// insert a nop at the start of the prolog so we can patch in a
// branch if we need to invalidate the method later
__ nop();
- if (C->clinit_barrier_on_entry()) {
- assert(!C->method()->holder()->is_not_initialized(), "initialization should have been started");
-
- Label L_skip_barrier;
+ __ verified_entry(C, 0);
- __ mov_metadata(rscratch2, C->method()->holder()->constant_encoding());
- __ clinit_barrier(rscratch2, rscratch1, &L_skip_barrier);
- __ far_jump(RuntimeAddress(SharedRuntime::get_handle_wrong_method_stub()));
- __ bind(L_skip_barrier);
- }
-
- if (C->max_vector_size() > 0) {
- __ reinitialize_ptrue();
+ if (C->stub_function() == NULL) {
+ __ entry_barrier();
}
- int bangsize = C->output()->bang_size_in_bytes();
- if (C->output()->need_stack_bang(bangsize))
- __ generate_stack_overflow_check(bangsize);
-
- __ build_frame(framesize);
-
- if (C->stub_function() == NULL) {
- BarrierSetAssembler* bs = BarrierSet::barrier_set()->barrier_set_assembler();
- if (BarrierSet::barrier_set()->barrier_set_nmethod() != NULL) {
- // Dummy labels for just measuring the code size
- Label dummy_slow_path;
- Label dummy_continuation;
- Label dummy_guard;
- Label* slow_path = &dummy_slow_path;
- Label* continuation = &dummy_continuation;
- Label* guard = &dummy_guard;
- if (!Compile::current()->output()->in_scratch_emit_size()) {
- // Use real labels from actual stub when not emitting code for the purpose of measuring its size
- C2EntryBarrierStub* stub = new (Compile::current()->comp_arena()) C2EntryBarrierStub();
- Compile::current()->output()->add_stub(stub);
- slow_path = &stub->entry();
- continuation = &stub->continuation();
- guard = &stub->guard();
- }
- // In the C2 code, we move the non-hot part of nmethod entry barriers out-of-line to a stub.
- bs->nmethod_entry_barrier(&_masm, slow_path, continuation, guard);
- }
+ if (!Compile::current()->output()->in_scratch_emit_size()) {
+ __ bind(*_verified_entry);
}
if (VerifyStackAtCalls) {
Unimplemented();
}
ConstantTable& constant_table = C->output()->constant_table();
constant_table.set_table_base_offset(constant_table.calculate_table_base_offset());
}
}
- uint MachPrologNode::size(PhaseRegAlloc* ra_) const
- {
- return MachNode::size(ra_); // too many variables; just compute it
- // the hard way
- }
-
int MachPrologNode::reloc() const
{
return 0;
}
void MachEpilogNode::emit(CodeBuffer &cbuf, PhaseRegAlloc *ra_) const {
Compile* C = ra_->C;
C2_MacroAssembler _masm(&cbuf);
int framesize = C->output()->frame_slots() << LogBytesPerInt;
- __ remove_frame(framesize);
+ __ remove_frame(framesize, C->needs_stack_repair());
if (StackReservedPages > 0 && C->has_reserved_stack_access()) {
__ reserved_stack_check();
}
__ relocate(relocInfo::poll_return_type);
__ safepoint_poll(*code_stub, true /* at_return */, false /* acquire */, true /* in_nmethod */);
}
}
- uint MachEpilogNode::size(PhaseRegAlloc *ra_) const {
- // Variable size. Determine dynamically.
- return MachNode::size(ra_);
- }
-
int MachEpilogNode::reloc() const {
// Return number of relocatable values contained in this instruction.
return 1; // 1 for polling page.
}
} else {
return 2 * NativeInstruction::instruction_size;
}
}
- //=============================================================================
+ ///=============================================================================
+ #ifndef PRODUCT
+ void MachVEPNode::format(PhaseRegAlloc* ra_, outputStream* st) const
+ {
+ st->print_cr("# MachVEPNode");
+ if (!_verified) {
+ st->print_cr("\t load_class");
+ } else {
+ st->print_cr("\t unpack_inline_arg");
+ }
+ }
+ #endif
+
+ void MachVEPNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const
+ {
+ C2_MacroAssembler _masm(&cbuf);
+
+ if (!_verified) {
+ Label skip;
+ __ cmp_klass(j_rarg0, rscratch2, rscratch1);
+ __ br(Assembler::EQ, skip);
+ __ far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
+ __ bind(skip);
+
+ } else {
+ // insert a nop at the start of the prolog so we can patch in a
+ // branch if we need to invalidate the method later
+ __ nop();
+
+ // TODO 8284443 Avoid creation of temporary frame
+ if (ra_->C->stub_function() == NULL) {
+ __ verified_entry(ra_->C, 0);
+ __ entry_barrier();
+ int framesize = ra_->C->output()->frame_slots() << LogBytesPerInt;
+ __ remove_frame(framesize, false);
+ }
+ // Unpack inline type args passed as oop and then jump to
+ // the verified entry point (skipping the unverified entry).
+ int sp_inc = __ unpack_inline_args(ra_->C, _receiver_only);
+ // Emit code for verified entry and save increment for stack repair on return
+ __ verified_entry(ra_->C, sp_inc);
+ if (Compile::current()->output()->in_scratch_emit_size()) {
+ Label dummy_verified_entry;
+ __ b(dummy_verified_entry);
+ } else {
+ __ b(*_verified_entry);
+ }
+ }
+ }
+ //=============================================================================
#ifndef PRODUCT
void MachUEPNode::format(PhaseRegAlloc* ra_, outputStream* st) const
{
st->print_cr("# MachUEPNode");
if (UseCompressedClassPointers) {
void MachUEPNode::emit(CodeBuffer& cbuf, PhaseRegAlloc* ra_) const
{
// This is the unverified entry point.
C2_MacroAssembler _masm(&cbuf);
+ Label skip;
+ // UseCompressedClassPointers logic are inside cmp_klass
__ cmp_klass(j_rarg0, rscratch2, rscratch1);
- Label skip;
+
// TODO
// can we avoid this skip and still use a reloc?
__ br(Assembler::EQ, skip);
__ far_jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
__ bind(skip);
}
- uint MachUEPNode::size(PhaseRegAlloc* ra_) const
- {
- return MachNode::size(ra_);
- }
-
// REQUIRED EMIT CODE
//=============================================================================
// Emit exception handler code.
C2_MacroAssembler _masm(&cbuf);
if (VerifyStackAtCalls) {
// Check that stack depth is unchanged: find majik cookie on stack
__ call_Unimplemented();
}
+ if (tf()->returns_inline_type_as_fields() && !_method->is_method_handle_intrinsic()) {
+ if (!_method->signature()->returns_null_free_inline_type()) {
+ // The last return value is not set by the callee but used to pass IsInit information to compiled code.
+ // Search for the corresponding projection, get the register and emit code that initialized it.
+ uint con = (tf()->range_cc()->cnt() - 1);
+ for (DUIterator_Fast imax, i = fast_outs(imax); i < imax; i++) {
+ ProjNode* proj = fast_out(i)->as_Proj();
+ if (proj->_con == con) {
+ // Set IsInit if r0 is non-null (a non-null value is returned buffered or scalarized)
+ OptoReg::Name optoReg = ra_->get_reg_first(proj);
+ VMReg reg = OptoReg::as_VMReg(optoReg, ra_->_framesize, OptoReg::reg2stack(ra_->_matcher._new_SP));
+ Register toReg = reg->is_reg() ? reg->as_Register() : rscratch1;
+ __ cmp(r0, zr);
+ __ cset(toReg, Assembler::NE);
+ if (reg->is_stack()) {
+ int st_off = reg->reg2stack() * VMRegImpl::stack_slot_size;
+ __ str(toReg, Address(sp, st_off));
+ }
+ break;
+ }
+ }
+ }
+ if (return_value_is_used()) {
+ // An inline type is returned as fields in multiple registers.
+ // R0 either contains an oop if the inline type is buffered or a pointer
+ // to the corresponding InlineKlass with the lowest bit set to 1. Zero r0
+ // if the lowest bit is set to allow C2 to use the oop after null checking.
+ // r0 &= (r0 & 1) - 1
+ __ andr(rscratch1, r0, 0x1);
+ __ sub(rscratch1, rscratch1, 0x1);
+ __ andr(r0, r0, rscratch1);
+ }
+ }
%}
enc_class aarch64_enc_java_to_runtime(method meth) %{
C2_MacroAssembler _masm(&cbuf);
if (!UseHeavyMonitors) {
// Set tmp to be (markWord of object | UNLOCK_VALUE).
__ orr(tmp, disp_hdr, markWord::unlocked_value);
+ if (EnableValhalla) {
+ // Mask inline_type bit such that we go to the slow path if object is an inline type
+ __ andr(tmp, tmp, ~((int) markWord::inline_type_bit_in_place));
+ }
+
// Initialize the box. (Must happen before we update the object mark!)
__ str(tmp, Address(box, BasicLock::displaced_header_offset_in_bytes()));
// Compare object markWord with an unlocked value (tmp) and if
// equal exchange the stack address of our box with object markWord.
%{
match(Set dst con);
ins_cost(INSN_COST * 4);
format %{
- "mov $dst, $con\t# ptr\n\t"
+ "mov $dst, $con\t# ptr"
%}
ins_encode(aarch64_enc_mov_p(dst, con));
ins_pipe(ialu_imm);
%}
ins_pipe(ialu_reg);
%}
+ instruct castN2X(iRegLNoSp dst, iRegN src) %{
+ match(Set dst (CastP2X src));
+
+ ins_cost(INSN_COST);
+ format %{ "mov $dst, $src\t# ptr -> long" %}
+
+ ins_encode %{
+ if ($dst$$reg != $src$$reg) {
+ __ mov(as_Register($dst$$reg), as_Register($src$$reg));
+ }
+ %}
+
+ ins_pipe(ialu_reg);
+ %}
+
instruct castP2X(iRegLNoSp dst, iRegP src) %{
match(Set dst (CastP2X src));
ins_cost(INSN_COST);
format %{ "mov $dst, $src\t# ptr -> long" %}
%}
// ============================================================================
// clearing of an array
- instruct clearArray_reg_reg(iRegL_R11 cnt, iRegP_R10 base, Universe dummy, rFlagsReg cr)
+ instruct clearArray_reg_reg_immL0(iRegL_R11 cnt, iRegP_R10 base, immL0 zero, Universe dummy, rFlagsReg cr)
%{
- match(Set dummy (ClearArray cnt base));
+ match(Set dummy (ClearArray (Binary cnt base) zero));
effect(USE_KILL cnt, USE_KILL base, KILL cr);
ins_cost(4 * INSN_COST);
format %{ "ClearArray $cnt, $base" %}
%}
ins_pipe(pipe_class_memory);
%}
+ instruct clearArray_reg_reg(iRegL_R11 cnt, iRegP_R10 base, iRegL val, Universe dummy, rFlagsReg cr)
+ %{
+ predicate(((ClearArrayNode*)n)->word_copy_only());
+ match(Set dummy (ClearArray (Binary cnt base) val));
+ effect(USE_KILL cnt, USE_KILL base, KILL cr);
+
+ ins_cost(4 * INSN_COST);
+ format %{ "ClearArray $cnt, $base, $val" %}
+
+ ins_encode %{
+ __ fill_words($base$$Register, $cnt$$Register, $val$$Register);
+ %}
+
+ ins_pipe(pipe_class_memory);
+ %}
+
instruct clearArray_imm_reg(immL cnt, iRegP_R10 base, iRegL_R11 temp, Universe dummy, rFlagsReg cr)
%{
predicate((uint64_t)n->in(2)->get_long()
- < (uint64_t)(BlockZeroingLowLimit >> LogBytesPerWord));
+ < (uint64_t)(BlockZeroingLowLimit >> LogBytesPerWord)
+ && !((ClearArrayNode*)n)->word_copy_only());
match(Set dummy (ClearArray cnt base));
effect(TEMP temp, USE_KILL base, KILL cr);
ins_cost(4 * INSN_COST);
format %{ "ClearArray $cnt, $base" %}
ins_pipe(pipe_class_call);
%}
// Call Runtime Instruction
+ // entry point is null, target holds the address to call
+ instruct CallLeafNoFPIndirect(iRegP target)
+ %{
+ predicate(n->as_Call()->entry_point() == NULL);
+
+ match(CallLeafNoFP target);
+
+ ins_cost(CALL_COST);
+
+ format %{ "CALL, runtime leaf nofp indirect $target" %}
+
+ ins_encode %{
+ __ blr($target$$Register);
+ %}
+
+ ins_pipe(pipe_class_call);
+ %}
+
instruct CallLeafNoFPDirect(method meth)
%{
+ predicate(n->as_Call()->entry_point() != NULL);
+
match(CallLeafNoFP);
effect(USE meth);
ins_cost(CALL_COST);
< prev index next >