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| author | Hongyu Wang <hongyu.wang@intel.com> | 2025-03-31 16:39:23 +0800 |
|---|---|---|
| committer | Hongyu Wang <hongyu.wang@intel.com> | 2025-04-03 11:03:57 +0800 |
| commit | 2488843477b3dcfeef76f8512ff6d9e8f3b58dca (patch) | |
| tree | 113dada9b8eb258ec203ab44e767915a13dbd039 /gcc | |
| parent | 4590a31f81ae18e0d887c1a56f510d22754f31ed (diff) | |
| download | gcc-2488843477b3dcfeef76f8512ff6d9e8f3b58dca.zip gcc-2488843477b3dcfeef76f8512ff6d9e8f3b58dca.tar.gz gcc-2488843477b3dcfeef76f8512ff6d9e8f3b58dca.tar.bz2 | |
APX: Emit nf variant for rotl splitter with mask [PR 119539]
For spiltter after *<rotate_insn><mode>3_mask it now splits the pattern
to *<rotate_insn><mode>3_mask with flag reg clobber, and it doesn't
generate nf variant of rotate. Directly emit nf pattern when
TARGET_APX_NF enabled in these define_insn_and_split.
gcc/ChangeLog:
PR target/119539
* config/i386/i386.md (*<insn><mode>3_mask): Emit NF variant of
rotate when APX_NF enabled, and use force_lowpart_subreg.
(*<insn><mode>3_mask_1): Likewise.
gcc/testsuite/ChangeLog:
PR target/119539
* gcc.target/i386/apx-nf-pr119539.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.md | 22 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/apx-nf-pr119539.c | 6 |
2 files changed, 25 insertions, 3 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index f7f790d..d6b2f29 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -18153,8 +18153,15 @@ (match_dup 2))) (clobber (reg:CC FLAGS_REG))])] { - operands[2] = force_reg (GET_MODE (operands[2]), operands[2]); - operands[2] = gen_lowpart (QImode, operands[2]); + operands[2] = force_lowpart_subreg (QImode, operands[2], + GET_MODE (operands[2])); + if (TARGET_APX_NF) + { + emit_move_insn (operands[0], + gen_rtx_<CODE> (<MODE>mode, operands[1], + operands[2])); + DONE; + } }) (define_split @@ -18192,7 +18199,16 @@ [(set (match_dup 0) (any_rotate:SWI (match_dup 1) (match_dup 2))) - (clobber (reg:CC FLAGS_REG))])]) + (clobber (reg:CC FLAGS_REG))])] +{ + if (TARGET_APX_NF) + { + emit_move_insn (operands[0], + gen_rtx_<CODE> (<MODE>mode, operands[1], + operands[2])); + DONE; + } +}) (define_split [(set (match_operand:SWI 0 "register_operand") diff --git a/gcc/testsuite/gcc.target/i386/apx-nf-pr119539.c b/gcc/testsuite/gcc.target/i386/apx-nf-pr119539.c new file mode 100644 index 0000000..5dfec55 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/apx-nf-pr119539.c @@ -0,0 +1,6 @@ +/* { dg-do compile { target { ! ia32 } } } */ +/* { dg-options "-mapx-features=nf -march=x86-64 -O2" } */ +/* { dg-final { scan-assembler-times "\{nf\} rol" 2 } } */ + +long int f1 (int x) { return ~(1ULL << (x & 0x3f)); } +long int f2 (char x) { return ~(1ULL << (x & 0x3f)); } |