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From: Alexandre Oliva <aoliva@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc(refs/users/aoliva/heads/testme)] adjust vectorization expectations for ppc costmodel 76b Date: Thu, 11 Mar 2021 10:21:42 +0000 (GMT) [thread overview] Message-ID: <20210311102142.83D473836C4A@sourceware.org> (raw) https://gcc.gnu.org/g:178ae14b8d96214d836091b88e6d0fa18fc59086 commit 178ae14b8d96214d836091b88e6d0fa18fc59086 Author: Alexandre Oliva <oliva@adacore.com> Date: Tue Mar 9 18:43:02 2021 -0300 adjust vectorization expectations for ppc costmodel 76b This test expects vectorization at power8+ because strict alignment is not required for vectors. For power7, vectorization is not to take place because it's not deemed profitable: 12 iterations would be required to make it so. But for power6 and below, the test's 10 iterations are enough to make vectorization profitable, but the test doesn't expect this. Assuming the decision is indeed appropriate, I'm adjusting the expectations. for gcc/testsuite/ChangeLog * gcc.dg/vect/costmodel/ppc/costmodel-vect-76b.c: Adjust expectations for cpus below power7. Diff: --- gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-76b.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-76b.c b/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-76b.c index 5da4343198c..93798501228 100644 --- a/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-76b.c +++ b/gcc/testsuite/gcc.dg/vect/costmodel/ppc/costmodel-vect-76b.c @@ -45,9 +45,10 @@ int main (void) return 0; } -/* Peeling to align the store is used. Overhead of peeling is too high. */ -/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { target { vector_alignment_reachable && {! vect_no_align} } } } } */ -/* { dg-final { scan-tree-dump-times "vectorization not profitable" 1 "vect" { target { vector_alignment_reachable && {! vect_hw_misalign} } } } } */ +/* Peeling to align the store is used. Overhead of peeling is too high + for power7, but acceptable for earlier architectures. */ +/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 0 "vect" { target { has_arch_pwr7 && { vector_alignment_reachable && {! vect_no_align} } } } } } */ +/* { dg-final { scan-tree-dump-times "vectorization not profitable" 1 "vect" { target { has_arch_pwr7 && { vector_alignment_reachable && {! vect_hw_misalign} } } } } } */ /* Versioning to align the store is used. Overhead of versioning is not too high. */ -/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_no_align || {! vector_alignment_reachable} } } } } */ +/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_no_align || { {! vector_alignment_reachable} || {! has_arch_pwr7 } } } } } } */
next reply other threads:[~2021-03-11 10:21 UTC|newest] Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-03-11 10:21 Alexandre Oliva [this message] -- strict thread matches above, loose matches on Subject: below -- 2024-04-22 6:56 Alexandre Oliva 2024-04-22 5:13 Alexandre Oliva 2024-04-21 20:27 Alexandre Oliva 2023-04-06 6:34 Alexandre Oliva 2023-03-30 14:06 Alexandre Oliva 2023-03-24 6:24 Alexandre Oliva 2023-03-23 3:47 Alexandre Oliva 2023-03-16 14:21 Alexandre Oliva 2023-03-15 14:05 Alexandre Oliva 2021-03-09 21:47 Alexandre Oliva 2021-03-09 21:25 Alexandre Oliva 2021-03-09 2:26 Alexandre Oliva
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