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| author | Richard Biener <rguenther@suse.de> | 2021-11-15 11:37:56 +0100 |
|---|---|---|
| committer | Richard Biener <rguenther@suse.de> | 2021-11-15 13:07:57 +0100 |
| commit | 220bd61874cf114667b44f9ded76ed0639eb278b (patch) | |
| tree | e7fdc16ddcbe8866feed8fd504911e09024b0ddc /gcc/c/c-parser.c | |
| parent | 4d281ff7ddd8f6365943c0a622107f92315bb8a6 (diff) | |
| download | gcc-220bd61874cf114667b44f9ded76ed0639eb278b.zip gcc-220bd61874cf114667b44f9ded76ed0639eb278b.tar.gz gcc-220bd61874cf114667b44f9ded76ed0639eb278b.tar.bz2 | |
tree-optimization/103237 - avoid vectorizing unhandled double reductions
Double reductions which have multiple LC PHIs in the inner loop
are not handled correctly during transformation since those PHIs
are not properly classified as reduction. The following disables
vectorizing them.
2021-11-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/103237
* tree-vect-loop.c (vect_is_simple_reduction): Fail for
double reductions with multiple inner loop LC PHI nodes.
* gcc.dg/torture/pr103237.c: New testcase.
Diffstat (limited to 'gcc/c/c-parser.c')
0 files changed, 0 insertions, 0 deletions