diff options
| author | Richard Biener <rguenther@suse.de> | 2022-04-13 13:49:45 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2022-04-19 16:42:04 +0200 |
| commit | 353434b65ef7972172597d232ae17022d9a57244 (patch) | |
| tree | 49896352786db10b425a1fc134d52b776f9b1696 /libgo | |
| parent | cd3964ebd3e94ed0df4ecaadb7fd34e991cec753 (diff) | |
| download | gcc-353434b65ef7972172597d232ae17022d9a57244.zip gcc-353434b65ef7972172597d232ae17022d9a57244.tar.gz gcc-353434b65ef7972172597d232ae17022d9a57244.tar.bz2 | |
tree-optimization/104010 - fix SLP scalar costing with patterns
When doing BB vectorization the scalar cost compute is derailed
by patterns, causing lanes to be considered live and thus not
costed on the scalar side. For the testcase in PR104010 this
prevents vectorization which was done by GCC 11. PR103941
shows similar cases of missed optimizations that are fixed by
this patch.
2022-04-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/104010
PR tree-optimization/103941
* tree-vect-slp.cc (vect_bb_slp_scalar_cost): When
we run into stmts in patterns continue walking those
for uses outside of the vectorized region instead of
marking the lane live.
* gcc.target/i386/pr103941-1.c: New testcase.
* gcc.target/i386/pr103941-2.c: Likewise.
Diffstat (limited to 'libgo')
0 files changed, 0 insertions, 0 deletions