| commit | 472a8968ac81dffb06320466c786a6da0337c707 | |
| author | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Wed, 2 May 2018 07:40:22 +0000 (2 07:40 +0000) | ||
| committer | rsandifo <rsandifo@138bc75d-0d04-0410-961f-82ee72b054a4> | |
| Wed, 2 May 2018 07:40:22 +0000 (2 07:40 +0000) | ||
| tree | cc2d2a65d221c55d054add0a6d8e0909b1c800d6 | treesnapshot (tar.gz zip) |
| parent | f6b7f3cf30cdb0f4615666981b07876d7366da56 | commitdiff |
Tighten early exit in vect_analyze_data_ref_dependence (PR85586)
The problem in this PR was that we didn't consider aliases between
writes in the same strided group. After tightening the early exit
we get the expected abs(step) >= 2 versioning check.
2018-05-02 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/85586
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only
exit early for statements in the same group if the accesses are
not strided.
gcc/testsuite/
PR tree-optimization/85586
* gcc.dg/vect/pr85586.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259822 138bc75d-0d04-0410-961f-82ee72b054a4
The problem in this PR was that we didn't consider aliases between
writes in the same strided group. After tightening the early exit
we get the expected abs(step) >= 2 versioning check.
2018-05-02 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/85586
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only
exit early for statements in the same group if the accesses are
not strided.
gcc/testsuite/
PR tree-optimization/85586
* gcc.dg/vect/pr85586.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@259822 138bc75d-0d04-0410-961f-82ee72b054a4
| gcc/ChangeLog | diffblobblamehistory | |
| gcc/testsuite/ChangeLog | diffblobblamehistory | |
| gcc/testsuite/gcc.dg/vect/pr85586.c | [new file with mode: 0644] | blob |
| gcc/tree-vect-data-refs.c | diffblobblamehistory |