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re PR tree-optimization/87621 (outer loop auto-vectorization fails for exponentiation...
authorRichard Biener <rguenther@suse.de>
Fri, 9 Nov 2018 10:53:31 +0000 (10:53 +0000)
committerRichard Biener <rguenth@gcc.gnu.org>
Fri, 9 Nov 2018 10:53:31 +0000 (10:53 +0000)
commit1dd6990226fd92adf1e3c12a96c5776ec8efcb60
tree0aac21b4707fd7fd0474d87f2cfc0233c4385409tree | snapshot
parent43b01cc12de676d5a3871f7f813c740fc32b5a1acommit | diff
re PR tree-optimization/87621 (outer loop auto-vectorization fails for exponentiation code)

2018-11-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/87621
* tree-vect-loop.c (vectorizable_reduction): Handle reduction
op with only phi inputs.
* tree-ssa-loop-ch.c: Include tree-ssa-sccvn.h.
(ch_base::copy_headers): Run CSE on copied loop headers.
(pass_ch_vect::process_loop_p): Simplify.

* g++.dg/vect/pr87621.cc: New testcase.

From-SVN: r265959
gcc/ChangeLog diff | blob | history
gcc/testsuite/ChangeLog diff | blob | history
gcc/testsuite/g++.dg/vect/pr87621.cc [new file with mode: 0644] blob
gcc/tree-ssa-loop-ch.c diff | blob | history
gcc/tree-vect-loop.c diff | blob | history
Domain: System / Toolchain;