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| author | Richard Biener <rguenther@suse.de> | 2021-08-04 11:42:41 +0200 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-08-04 12:33:23 +0200 |
| commit | 87a0b607e40f8122c7fc45d496ef48799fe11550 (patch) | |
| tree | 66796d9199b39764de9cdad7db7a7e80135b047f /gcc/tree-vect-patterns.c | |
| parent | af31cab04770f7a1a1da069415ab62ca2ef54fc4 (diff) | |
| download | gcc-87a0b607e40f8122c7fc45d496ef48799fe11550.zip gcc-87a0b607e40f8122c7fc45d496ef48799fe11550.tar.gz gcc-87a0b607e40f8122c7fc45d496ef48799fe11550.tar.bz2 | |
tree-optimization/101756 - avoid vectorizing boolean MAX reductions
The following avoids vectorizing MIN/MAX reductions on bools which,
when ending up as vector(2) <signed-boolean:64> would need to be
adjusted because of the sign change. The fix instead avoids any
reduction vectorization where the result isn't compatible
to the original scalar type since we don't compensate for that
either.
2021-08-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/101756
* tree-vect-slp.c (vectorizable_bb_reduc_epilogue): Make sure
the result of the reduction epilogue is compatible to the original
scalar result.
* gcc.dg/vect/bb-slp-pr101756.c: New testcase.
Diffstat (limited to 'gcc/tree-vect-patterns.c')
0 files changed, 0 insertions, 0 deletions