1 /*
2 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2020, 2022, Huawei Technologies Co., Ltd. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #ifndef CPU_RISCV_C2_MACROASSEMBLER_RISCV_HPP
27 #define CPU_RISCV_C2_MACROASSEMBLER_RISCV_HPP
28
29 // C2_MacroAssembler contains high-level macros for C2
30
31 private:
32 // Return true if the phase output is in the scratch emit size mode.
33 virtual bool in_scratch_emit_size() override;
34
35 void element_compare(Register r1, Register r2,
36 Register result, Register cnt,
37 Register tmp1, Register tmp2,
38 VectorRegister vr1, VectorRegister vr2,
39 VectorRegister vrs,
40 bool is_latin, Label& DONE, Assembler::LMUL lmul);
41
42 void compress_bits_v(Register dst, Register src, Register mask, bool is_long);
43 void expand_bits_v(Register dst, Register src, Register mask, bool is_long);
44
45 public:
46 // Code used by cmpFastLock and cmpFastUnlock mach instructions in .ad file.
47 void fast_lock(Register object, Register box, Register tmp1, Register tmp2, Register tmp3);
48 void fast_unlock(Register object, Register box, Register tmp1, Register tmp2);
49 // Code used by cmpFastLockLightweight and cmpFastUnlockLightweight mach instructions in .ad file.
50 void fast_lock_lightweight(Register object, Register box, Register tmp1, Register tmp2, Register tmp3);
51 void fast_unlock_lightweight(Register object, Register box, Register tmp1, Register tmp2, Register tmp3);
52
53 void string_compare(Register str1, Register str2,
54 Register cnt1, Register cnt2, Register result,
55 Register tmp1, Register tmp2, Register tmp3,
56 int ae);
57
58 void string_indexof_char_short(Register str1, Register cnt1,
59 Register ch, Register result,
60 bool isL);
61
62 void string_indexof_char(Register str1, Register cnt1,
63 Register ch, Register result,
64 Register tmp1, Register tmp2,
65 Register tmp3, Register tmp4,
66 bool isL);
67
68 void string_indexof(Register str1, Register str2,
69 Register cnt1, Register cnt2,
70 Register tmp1, Register tmp2,
71 Register tmp3, Register tmp4,
72 Register tmp5, Register tmp6,
73 Register result, int ae);
74
75 void string_indexof_linearscan(Register haystack, Register needle,
76 Register haystack_len, Register needle_len,
77 Register tmp1, Register tmp2,
78 Register tmp3, Register tmp4,
79 int needle_con_cnt, Register result, int ae);
80
81 void arrays_equals(Register r1, Register r2,
82 Register tmp1, Register tmp2, Register tmp3,
83 Register result, int elem_size);
84
85 void arrays_hashcode(Register ary, Register cnt, Register result,
86 Register tmp1, Register tmp2,
87 Register tmp3, Register tmp4,
88 Register tmp5, Register tmp6,
89 BasicType eltype);
90
91 // helper function for arrays_hashcode
92 int arrays_hashcode_elsize(BasicType eltype);
93 void arrays_hashcode_elload(Register dst, Address src, BasicType eltype);
94
95 void string_equals(Register r1, Register r2,
96 Register result, Register cnt1);
97
98 // refer to conditional_branches and float_conditional_branches
99 static const int bool_test_bits = 3;
100 static const int neg_cond_bits = 2;
101 static const int unsigned_branch_mask = 1 << bool_test_bits;
102 static const int double_branch_mask = 1 << bool_test_bits;
103
104 // cmp
105 void cmp_branch(int cmpFlag,
106 Register op1, Register op2,
107 Label& label, bool is_far = false);
108
109 void float_cmp_branch(int cmpFlag,
110 FloatRegister op1, FloatRegister op2,
111 Label& label, bool is_far = false);
112
113 void enc_cmpUEqNeLeGt_imm0_branch(int cmpFlag, Register op,
114 Label& L, bool is_far = false);
115
116 void enc_cmpEqNe_imm0_branch(int cmpFlag, Register op,
117 Label& L, bool is_far = false);
118
119 void enc_cmove(int cmpFlag,
120 Register op1, Register op2,
121 Register dst, Register src);
122
123 void spill(Register r, bool is64, int offset) {
124 is64 ? sd(r, Address(sp, offset))
125 : sw(r, Address(sp, offset));
126 }
127
128 void spill(FloatRegister f, bool is64, int offset) {
129 is64 ? fsd(f, Address(sp, offset))
130 : fsw(f, Address(sp, offset));
131 }
132
133 void spill(VectorRegister v, int offset) {
134 add(t0, sp, offset);
135 vs1r_v(v, t0);
136 }
137
138 void unspill(Register r, bool is64, int offset) {
139 is64 ? ld(r, Address(sp, offset))
140 : lw(r, Address(sp, offset));
141 }
142
143 void unspillu(Register r, bool is64, int offset) {
144 is64 ? ld(r, Address(sp, offset))
145 : lwu(r, Address(sp, offset));
146 }
147
148 void unspill(FloatRegister f, bool is64, int offset) {
149 is64 ? fld(f, Address(sp, offset))
150 : flw(f, Address(sp, offset));
151 }
152
153 void unspill(VectorRegister v, int offset) {
154 add(t0, sp, offset);
155 vl1r_v(v, t0);
156 }
157
158 void spill_copy_vector_stack_to_stack(int src_offset, int dst_offset, uint vector_length_in_bytes) {
159 assert(vector_length_in_bytes % 16 == 0, "unexpected vector reg size");
160 for (int i = 0; i < (int)vector_length_in_bytes / 8; i++) {
161 unspill(t0, true, src_offset + (i * 8));
162 spill(t0, true, dst_offset + (i * 8));
163 }
164 }
165
166 void minmax_fp(FloatRegister dst,
167 FloatRegister src1, FloatRegister src2,
168 bool is_double, bool is_min);
169
170 void round_double_mode(FloatRegister dst, FloatRegister src, int round_mode,
171 Register tmp1, Register tmp2, Register tmp3);
172
173 void signum_fp(FloatRegister dst, FloatRegister one, bool is_double);
174
175 void float16_to_float(FloatRegister dst, Register src, Register tmp);
176 void float_to_float16(Register dst, FloatRegister src, FloatRegister ftmp, Register xtmp);
177
178 void signum_fp_v(VectorRegister dst, VectorRegister one, BasicType bt, int vlen);
179
180
181 // intrinsic methods implemented by rvv instructions
182
183 // compress bits, i.e. j.l.Integer/Long::compress.
184 void compress_bits_i_v(Register dst, Register src, Register mask);
185 void compress_bits_l_v(Register dst, Register src, Register mask);
186 // expand bits, i.e. j.l.Integer/Long::expand.
187 void expand_bits_i_v(Register dst, Register src, Register mask);
188 void expand_bits_l_v(Register dst, Register src, Register mask);
189
190 void float16_to_float_v(VectorRegister dst, VectorRegister src, uint vector_length);
191 void float_to_float16_v(VectorRegister dst, VectorRegister src, VectorRegister vtmp, Register tmp, uint vector_length);
192
193 void string_equals_v(Register r1, Register r2,
194 Register result, Register cnt1);
195
196 void arrays_equals_v(Register r1, Register r2,
197 Register result, Register cnt1,
198 int elem_size);
199
200 void string_compare_v(Register str1, Register str2,
201 Register cnt1, Register cnt2,
202 Register result,
203 Register tmp1, Register tmp2,
204 int encForm);
205
206 void clear_array_v(Register base, Register cnt);
207
208 void byte_array_inflate_v(Register src, Register dst,
209 Register len, Register tmp);
210
211 void char_array_compress_v(Register src, Register dst,
212 Register len, Register result,
213 Register tmp);
214
215 void encode_iso_array_v(Register src, Register dst,
216 Register len, Register result,
217 Register tmp, bool ascii);
218
219 void count_positives_v(Register ary, Register len,
220 Register result, Register tmp);
221
222 void string_indexof_char_v(Register str1, Register cnt1,
223 Register ch, Register result,
224 Register tmp1, Register tmp2,
225 bool isL);
226
227 void minmax_fp_v(VectorRegister dst,
228 VectorRegister src1, VectorRegister src2,
229 BasicType bt, bool is_min, uint vector_length);
230
231 void minmax_fp_masked_v(VectorRegister dst, VectorRegister src1, VectorRegister src2,
232 VectorRegister vmask, VectorRegister tmp1, VectorRegister tmp2,
233 BasicType bt, bool is_min, uint vector_length);
234
235 void reduce_minmax_fp_v(FloatRegister dst,
236 FloatRegister src1, VectorRegister src2,
237 VectorRegister tmp1, VectorRegister tmp2,
238 bool is_double, bool is_min, uint vector_length,
239 VectorMask vm = Assembler::unmasked);
240
241 void reduce_integral_v(Register dst, Register src1,
242 VectorRegister src2, VectorRegister tmp,
243 int opc, BasicType bt, uint vector_length,
244 VectorMask vm = Assembler::unmasked);
245
246 void vsetvli_helper(BasicType bt, uint vector_length, LMUL vlmul = Assembler::m1, Register tmp = t0);
247
248 void compare_integral_v(VectorRegister dst, VectorRegister src1, VectorRegister src2, int cond,
249 BasicType bt, uint vector_length, VectorMask vm = Assembler::unmasked);
250
251 void compare_fp_v(VectorRegister dst, VectorRegister src1, VectorRegister src2, int cond,
252 BasicType bt, uint vector_length, VectorMask vm = Assembler::unmasked);
253
254 void spill_vmask(VectorRegister v, int offset);
255
256 void unspill_vmask(VectorRegister v, int offset);
257
258 void spill_copy_vmask_stack_to_stack(int src_offset, int dst_offset, uint vector_length_in_bytes) {
259 assert(vector_length_in_bytes % 4 == 0, "unexpected vector mask reg size");
260 for (int i = 0; i < (int)vector_length_in_bytes / 4; i++) {
261 unspill(t0, false, src_offset + (i * 4));
262 spill(t0, false, dst_offset + (i * 4));
263 }
264 }
265
266 void integer_extend_v(VectorRegister dst, BasicType dst_bt, uint vector_length,
267 VectorRegister src, BasicType src_bt, bool is_signed);
268
269 void integer_narrow_v(VectorRegister dst, BasicType dst_bt, uint vector_length,
270 VectorRegister src, BasicType src_bt);
271
272 void vfcvt_rtz_x_f_v_safe(VectorRegister dst, VectorRegister src);
273
274 void extract_v(Register dst, VectorRegister src, BasicType bt, int idx, VectorRegister tmp);
275 void extract_fp_v(FloatRegister dst, VectorRegister src, BasicType bt, int idx, VectorRegister tmp);
276
277 #endif // CPU_RISCV_C2_MACROASSEMBLER_RISCV_HPP