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[Bug tree-optimization/70130] [6 Regression] h264ref fails with verification error starting with r231674
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 09 Mar 2016 14:07:57 +0000
- Subject: [Bug tree-optimization/70130] [6 Regression] h264ref fails with verification error starting with r231674
- Auto-submitted: auto-generated
- References: <bug-70130-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70130
--- Comment #5 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
We also verified that the vectorized version of the loop is never entered
during the application, since the output array is never properly aligned.
Other experiments also point to a linker issue. When compiling everything with
-O1 except for the file containing this code, and that file at -O3, the problem
disappears. Also as noted, the original code works fine with an older linker.
It looks like a linker corner case that's sensitive to code or data
positioning.