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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-06-22 09:45:31 +0000 |
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| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-06-22 09:45:31 +0000 |
| commit | 9c8f9374b5ae3f087836445dce46e22c238891c0 (patch) | |
| tree | f23a752ef0fc82c332e26e49a2dbafbcdf05e928 /lldb/packages/Python/lldbsuite/test/python_api/value/TestValueAPI.py | |
| parent | 7ee5b090defa85a6e34b5f345e076d16d84192e5 (diff) | |
| download | bcm5719-llvm-9c8f9374b5ae3f087836445dce46e22c238891c0.tar.gz bcm5719-llvm-9c8f9374b5ae3f087836445dce46e22c238891c0.zip | |
[CostModel][AArch64] Add some initial costs for SK_Select and SK_PermuteSingleSrc
AArch64 was only setting costs for SK_Transpose, which meant that many of the simpler shuffles (e.g. SK_Select and SK_PermuteSingleSrc for larger vector elements) was being severely overestimated by the default shuffle expansion.
This patch adds costs to help improve SLP performance and avoid a regression in reductions introduced by D48174.
I'm not very knowledgeable about AArch64 shuffle lowering so I've kept the extra costs to a minimum - someone who knows this code can add extra costs which should improve vectorization a lot more.
Differential Revision: https://reviews.llvm.org/D48172
llvm-svn: 335329
Diffstat (limited to 'lldb/packages/Python/lldbsuite/test/python_api/value/TestValueAPI.py')
0 files changed, 0 insertions, 0 deletions
