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| author | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-24 18:24:39 +0000 |
|---|---|---|
| committer | hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-24 18:24:39 +0000 |
| commit | b2d90e8b7ed8a1fd392978304e8bfdb295db6816 (patch) | |
| tree | ff51025a91389fdadda16f5296b0266c6edc4b5b /gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c | |
| parent | bb8ec5ddee4d2ad449d0a2684138209fb7322c38 (diff) | |
| download | gcc-b2d90e8b7ed8a1fd392978304e8bfdb295db6816.tar.gz | |
Improve vzeroupper optimization.
gcc/
2010-11-24 H.J. Lu <hongjiu.lu@intel.com>
PR target/46519
* config/i386/i386.c (upper_128bits_state): New.
(block_info_def): Remove upper_128bits_set and done. Add state,
referenced, count, processed and rescanned.
(check_avx256_stores): Updated.
(move_or_delete_vzeroupper_2): Updated. Handle deleted BB_END.
Call note_stores only if needed. Set referenced and count.
(move_or_delete_vzeroupper_1): Updated. Set rescan_vzeroupper_p.
(rescan_move_or_delete_vzeroupper): New.
(move_or_delete_vzeroupper): Process and rescan all all basic
blocks instead of predecessor blocks of all exit points.
(ix86_option_override_internal): Enable vzeroupper optimization
only for -fexpensive-optimizations and not optimizing for size.
(use_avx256_p): Removed.
(init_cumulative_args): Don't set use_avx256_p.
(ix86_function_arg): Likewise.
(ix86_expand_move): Likewise.
(ix86_expand_vector_move_misalign): Likewise.
(ix86_local_alignment): Likewise.
(ix86_minimum_alignment): Likewise.
(ix86_expand_epilogue): Don't check use_avx256_p when generating
vzeroupper.
(ix86_expand_call): Likewise.
* config/i386/i386.h (machine_function): Remove use_vzeroupper_p
and use_avx256_p. Add rescan_vzeroupper_p.
gcc/testsuite/
2010-11-24 H.J. Lu <hongjiu.lu@intel.com>
PR target/46519
* gcc.target/i386/avx-vzeroupper-10.c: Expect no avx_vzeroupper.
* gcc.target/i386/avx-vzeroupper-11.c: Likewise.
* gcc.target/i386/avx-vzeroupper-14.c: Replace -O0 with -O2.
* gcc.target/i386/avx-vzeroupper-15.c: Likewise.
* gcc.target/i386/avx-vzeroupper-16.c: Likewise.
* gcc.target/i386/avx-vzeroupper-17.c: Likewise.
* gcc.target/i386/avx-vzeroupper-20.c: New.
* gcc.target/i386/avx-vzeroupper-21.c: Likewise.
* gcc.target/i386/avx-vzeroupper-22.c: Likewise.
* gcc.target/i386/avx-vzeroupper-23.c: Likewise.
* gcc.target/i386/avx-vzeroupper-24.c: Likewise.
* gcc.target/i386/avx-vzeroupper-25.c: Likewise.
* gcc.target/i386/avx-vzeroupper-26.c: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@167124 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c')
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c b/gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c new file mode 100644 index 00000000000..5ef49c7d32d --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/avx-vzeroupper-25.c @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-options "-O0 -mavx -mtune=generic -dp" } */ + +#include <immintrin.h> + +extern __m256 x, y; + +void +foo () +{ + x = y; +} + +/* { dg-final { scan-assembler-not "avx_vzeroupper" } } */ |