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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2016-01-28 11:52:08 +0000 |
|---|---|---|
| committer | Wilco Dijkstra <wilco@gcc.gnu.org> | 2016-01-28 11:52:08 +0000 |
| commit | c428f91cb752d9b831df83f057b73e2815f2adad (patch) | |
| tree | 01eefad07cd25439ef89e429e6aa15805e974d2b /gcc/ada/gcc-interface/decl.c | |
| parent | e2b691c4204110d08206dcc304c9fba56e88b89b (diff) | |
| download | gcc-c428f91cb752d9b831df83f057b73e2815f2adad.zip gcc-c428f91cb752d9b831df83f057b73e2815f2adad.tar.gz gcc-c428f91cb752d9b831df83f057b73e2815f2adad.tar.bz2 | |
Add support for vector permute cost since various permutes can expand into a complex sequence of instructions.
Add support for vector permute cost since various permutes can expand
into a complex sequence of instructions. This fixes major performance
regressions due to recent changes in SLP vectorizer (which now vectorizes
more aggressively and emits many complex permutes). Set the cost to > 1
for all microarchitectures so that the number of permutes is usually zero
and regressions disappear.
2016-01-28 Wilco Dijkstra <wdijkstr@arm.com>
* config/aarch64/aarch64.c (generic_vector_cost):
Set vec_permute_cost.
(cortexa57_vector_cost): Likewise.
(exynosm1_vector_cost): Likewise.
(xgene1_vector_cost): Likewise.
(aarch64_builtin_vectorization_cost): Use vec_permute_cost.
* config/aarch64/aarch64-protos.h (cpu_vector_cost):
Add vec_permute_cost entry.
From-SVN: r232922
Diffstat (limited to 'gcc/ada/gcc-interface/decl.c')
0 files changed, 0 insertions, 0 deletions