[Bug tree-optimization/105618] [11/12 Regression] Missed loop body simplification by -O3 (trunk v.s. 10.3)
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Thu May 19 12:47:41 GMT 2022
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105618
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:374cee99d01fceb89d0929da8b38051e6c9768f0
commit r12-8403-g374cee99d01fceb89d0929da8b38051e6c9768f0
Author: Richard Biener <rguenther@suse.de>
Date: Tue May 17 09:45:02 2022 +0200
tree-optimization/105618 - restore load sinking
The PR97330 fix caused some missed sinking of loads out of loops
the following patch re-instantiates.
2022-05-17 Richard Biener <rguenther@suse.de>
PR tree-optimization/105618
* tree-ssa-sink.cc (statement_sink_location): For virtual
PHI uses ignore those defining the used virtual operand.
* gcc.dg/tree-ssa/ssa-sink-19.c: New testcase.
(cherry picked from commit ebce0e9bd8d714a8607ae24331a3d842b0d11859)
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