https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111554
Sam James <sjames at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu.org
Summary|[12/13/14 regression] |[12/13/14 regression]
|Timeout with with "-O3 |Timeout with with "-O3
|-fno-dse -fno-inline |-fno-dse -fno-inline
|-fno-store-merging |-fno-store-merging
|-fno-toplevel-reorder |-fno-toplevel-reorder
|-fno-tree-dce |-fno-tree-dce
|-fno-tree-dse" |-fno-tree-dse" since
| |r12-2097-g9f34b780b0461e
--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
Bisect says r12-2097-g9f34b780b0461e:
9f34b780b0461ec7b2b2defe96e44ab616ea2aa3 is the first bad commit
commit 9f34b780b0461ec7b2b2defe96e44ab616ea2aa3
Author: Richard Biener <rguent...@suse.de>
Date: Wed Jul 7 11:41:03 2021 +0200
tree-optimization/99728 - improve LIM for loops with aggregate copies
This improves LIM by recording aggregate copies for disambiguation
purposes instead of as UNANALYZABLE_MEM which will prevent any
invariant or store motion across it. This allows four of the six
references in the loop of the testcase to be promoted.
2021-07-07 Richard Biener <rguent...@suse.de>
I'm not sure if that's right though. I can rerun it if it sounds dubious.
