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| author | liuhongt <hongtao.liu@intel.com> | 2022-03-18 16:11:04 +0800 |
|---|---|---|
| committer | liuhongt <hongtao.liu@intel.com> | 2022-03-18 20:01:17 +0800 |
| commit | 1f5c0e67393e8f67d66150eba8c64edfeb14e11b (patch) | |
| tree | 1e59a5dd29c7e2725cc2936373d353acfcc34465 /gcc | |
| parent | ac73c944eac88f37db2767aa4acc7ff6f4983f21 (diff) | |
| download | gcc-1f5c0e67393e8f67d66150eba8c64edfeb14e11b.zip gcc-1f5c0e67393e8f67d66150eba8c64edfeb14e11b.tar.gz gcc-1f5c0e67393e8f67d66150eba8c64edfeb14e11b.tar.bz2 | |
Refine HImode movement for "v" to "v".
Set attr from HImode to HFmode which uses vmovsh instead of vmovw for
movment between sse registers.
gcc/ChangeLog:
PR target/104974
* config/i386/i386.md (*movhi_internal): Set attr type from HI
to HF for alternative 12 under TARGET_AVX512FP16.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr104974.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.md | 2 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr104974.c | 12 |
2 files changed, 13 insertions, 1 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 5b44c65..02f298c 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -2658,7 +2658,7 @@ (const_string "TI")) (eq_attr "alternative" "12") (cond [(match_test "TARGET_AVX512FP16") - (const_string "HI") + (const_string "HF") (match_test "TARGET_AVX") (const_string "TI") (ior (not (match_test "TARGET_SSE2")) diff --git a/gcc/testsuite/gcc.target/i386/pr104974.c b/gcc/testsuite/gcc.target/i386/pr104974.c new file mode 100644 index 0000000..d1f2b1a --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr104974.c @@ -0,0 +1,12 @@ +/* { dg-do assemble { target avx512fp16 } } */ +/* { dg-options "-mavx512fp16 -O2" } */ + +short +foo (short a) +{ + register short b __asm ("%xmm1") = a; + asm volatile ("": "+v" (b)); + register short c __asm ("%xmm2") = b; + asm volatile ("": "+v" (c)); + return a; +} |