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| author | liuhongt <hongtao.liu@intel.com> | 2021-11-08 09:19:29 +0800 |
|---|---|---|
| committer | liuhongt <hongtao.liu@intel.com> | 2021-11-08 09:19:29 +0800 |
| commit | 2ad1e8081f4797a99a96b513ffe14c7305e9b3d8 (patch) | |
| tree | ba4ae7744d19251728e893ab0a1023288f44e183 /gcc | |
| parent | 3cb25fd1adb26cddc57cd9ae356f72de96ec2daa (diff) | |
| download | gcc-2ad1e8081f4797a99a96b513ffe14c7305e9b3d8.zip gcc-2ad1e8081f4797a99a96b513ffe14c7305e9b3d8.tar.gz gcc-2ad1e8081f4797a99a96b513ffe14c7305e9b3d8.tar.bz2 | |
[Gimple] Simplify (trunc)fma ((extend)a, (extend)b, (extend)c) to IFN_FMA (a,b, c).
a, b, c are same type as truncation type and has less precision than
extend type, the optimization is guarded under
flag_unsafe_math_optimizations.
gcc/ChangeLog:
PR target/102464
* match.pd: Simplify
(trunc)fma ((extend)a, (extend)b, (extend)c) to IFN_FMA (a, b,
c) under flag_unsafe_math_optimizations.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr102464-fma.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/match.pd | 15 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr102464-fma.c | 32 |
2 files changed, 47 insertions, 0 deletions
diff --git a/gcc/match.pd b/gcc/match.pd index 917833d..869b26d 100644 --- a/gcc/match.pd +++ b/gcc/match.pd @@ -6217,6 +6217,21 @@ DEFINE_INT_AND_FLOAT_ROUND_FN (RINT) type, OPTIMIZE_FOR_BOTH)) (IFN_COPYSIGN @0 @1)))) +(for froms (BUILT_IN_FMAF BUILT_IN_FMA BUILT_IN_FMAL) + tos (IFN_FMA IFN_FMA IFN_FMA) + (simplify + (convert (froms (convert@3 @0) (convert @1) (convert @2))) + (if (flag_unsafe_math_optimizations + && optimize + && FLOAT_TYPE_P (type) + && FLOAT_TYPE_P (TREE_TYPE (@3)) + && types_match (type, TREE_TYPE (@0)) + && types_match (type, TREE_TYPE (@1)) + && types_match (type, TREE_TYPE (@2)) + && TYPE_PRECISION (type) < TYPE_PRECISION (TREE_TYPE (@3)) + && direct_internal_fn_supported_p (as_internal_fn (tos), + type, OPTIMIZE_FOR_BOTH)) + (tos @0 @1 @2)))) #endif (for froms (XFLOORL XCEILL XROUNDL XRINTL) diff --git a/gcc/testsuite/gcc.target/i386/pr102464-fma.c b/gcc/testsuite/gcc.target/i386/pr102464-fma.c new file mode 100644 index 0000000..9c70d93 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr102464-fma.c @@ -0,0 +1,32 @@ +/* PR target/102464. */ +/* { dg-do compile } */ +/* { dg-options "-O2 -mavx512fp16 -mavx512vl -ffast-math -ftree-vectorize -mtune=generic -mfpmath=sse" } */ +/* { dg-final { scan-assembler-times "vfmadd...ph" 3 } } */ +/* { dg-final { scan-assembler-times "vfmadd...sh" 3 } } */ +/* { dg-final { scan-assembler-times "vfmadd...ps" 2 } } */ +/* { dg-final { scan-assembler-times "vfmadd...ss" 2 } } */ +/* { dg-final { scan-assembler-times "vfmadd...pd" 1 } } */ +/* { dg-final { scan-assembler-times "vfmadd...sd" 1 } } */ + +#include<math.h> +#define FOO(TYPE,SUFFIX) \ + void \ + foo_vect_##TYPE##SUFFIX (TYPE* __restrict a, TYPE* b, TYPE* c, TYPE* d) \ + { \ + for (int i = 0; i != 8; i++) \ + a[i] = fma##SUFFIX (b[i], c[i], d[i]); \ + } \ + TYPE \ + foo_##TYPE##SUFFIX (TYPE b, TYPE c, TYPE d) \ + { \ + return fma##l (b, c, d); \ + } + +FOO (_Float16, f); +FOO (_Float16,); +FOO (_Float16, l); + +FOO (float,); +FOO (float, l); + +FOO (double, l); |