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[Bug tree-optimization/77605] wrong code at -O3 on x86_64-linux-gnu


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77605

byuu <setsunakun0 at hotmail dot com> changed:

           What    |Removed                     |Added
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                 CC|                            |setsunakun0 at hotmail dot com

--- Comment #2 from byuu <setsunakun0 at hotmail dot com> ---
This bug is caused by tree-loop-vectorize, and it affects non-Linux platforms
as well (gcc version 5.1.0 (tdm64-1) Windows here.) It works correctly with -O3
-fno-tree-loop-vectorize. I've run into improperly generated code several times
due to this optimization, but was unable to produce such a succinct test case
for a bug report.

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