[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


--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener


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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