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| author | Jakub Jelinek <jakub@redhat.com> | 2018-02-13 09:34:42 +0100 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2018-02-13 09:34:42 +0100 |
| commit | 848bb6fc0e502345536b25e1a110eb7f01eccbc1 (patch) | |
| tree | d7abb7ffececb36706b28e05151701a372dc8cc5 /gcc/generic-match-head.c | |
| parent | f4b29321048fa82c754f04814dbd46d92773e72a (diff) | |
| download | gcc-848bb6fc0e502345536b25e1a110eb7f01eccbc1.zip gcc-848bb6fc0e502345536b25e1a110eb7f01eccbc1.tar.gz gcc-848bb6fc0e502345536b25e1a110eb7f01eccbc1.tar.bz2 | |
re PR middle-end/84309 (Wrong-code with -ffast-math)
PR middle-end/84309
* match.pd (pow(C,x) -> exp(log(C)*x)): Optimize instead into
exp2(log2(C)*x) if C is a power of 2 and c99 runtime is available.
* generic-match-head.c (canonicalize_math_after_vectorization_p): New
inline function.
* gimple-match-head.c (canonicalize_math_after_vectorization_p): New
inline function.
* omp-simd-clone.h: New file.
* omp-simd-clone.c: Include omp-simd-clone.h.
(expand_simd_clones): No longer static.
* tree-vect-patterns.c: Include fold-const-call.h, attribs.h,
cgraph.h and omp-simd-clone.h.
(vect_recog_pow_pattern): Optimize pow(C,x) to exp(log(C)*x).
(vect_recog_widen_shift_pattern): Formatting fix.
(vect_pattern_recog_1): Don't check optab for calls.
* gcc.dg/pr84309.c: New test.
* gcc.target/i386/pr84309.c: New test.
From-SVN: r257617
Diffstat (limited to 'gcc/generic-match-head.c')
| -rw-r--r-- | gcc/generic-match-head.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/generic-match-head.c b/gcc/generic-match-head.c index b79f70e..f7b6b1f 100644 --- a/gcc/generic-match-head.c +++ b/gcc/generic-match-head.c @@ -68,3 +68,12 @@ canonicalize_math_p () { return true; } + +/* Return true if math operations that are beneficial only after + vectorization should be canonicalized. */ + +static inline bool +canonicalize_math_after_vectorization_p () +{ + return false; +} |