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| author | Kugan Vivekanandarajah <kvivekananda@nvidia.com> | 2024-10-31 07:20:49 +1100 |
|---|---|---|
| committer | Kugan Vivekanandarajah <kvivekananda@nvidia.com> | 2024-10-31 07:21:30 +1100 |
| commit | 5be5c66071b407a767856b8fa300ede54fcf11b4 (patch) | |
| tree | 3538c4326193cc5aa78fb5b5b0c1cfd1c757e174 /gcc/expr.cc | |
| parent | 857145bf9a2168c8037820148b8894fbd74a823b (diff) | |
| download | gcc-5be5c66071b407a767856b8fa300ede54fcf11b4.zip gcc-5be5c66071b407a767856b8fa300ede54fcf11b4.tar.gz gcc-5be5c66071b407a767856b8fa300ede54fcf11b4.tar.bz2 | |
[PATCH] Adjust param_vect_max_version_for_alias_checks
This patch sets param_vect_max_version_for_alias_checks to 15.
This was causing GCC to miss vectorization opportunities for an application,
making it slower than LLVM by about ~14%.
Original default of 10 itself is arbitary. Given that, GCC's vectoriser does
consideres cost of alias checks, increasing this param is reasonable.
In this case we need a value of at teast 11 whereas the current
default is 10.
gcc/ChangeLog:
* params.opt: Adjust param_vect_max_version_for_alias_checks
gcc/testsuite/ChangeLog:
* g++.dg/alias-checks.C: New test.
Signed-off-by: Kugan Vivekanandarajah <kvivekananda@nvidia.com>
Diffstat (limited to 'gcc/expr.cc')
0 files changed, 0 insertions, 0 deletions