[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 via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105618

--- Comment #7 from CVS Commits  ---
The releases/gcc-12 branch has been updated by Richard Biener
:

https://gcc.gnu.org/g:374cee99d01fceb89d0929da8b38051e6c9768f0

commit r12-8403-g374cee99d01fceb89d0929da8b38051e6c9768f0
Author: Richard Biener 
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  

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)

[Bug tree-optimization/105618] [11/12 Regression] Missed loop body simplification by -O3 (trunk v.s. 10.3)

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105618

Richard Biener  changed:

   What|Removed |Added

Summary|[11/12/13 Regression]   |[11/12 Regression] Missed
   |Missed loop body|loop body simplification by
   |simplification by -O3   |-O3 (trunk v.s. 10.3)
   |(trunk v.s. 10.3)   |
  Known to work||13.0

--- Comment #6 from Richard Biener  ---
Fixed on trunk sofar.