https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115220
--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:f9fbb47987efc8b5261e4cc36613c928a8693493 commit r15-850-gf9fbb47987efc8b5261e4cc36613c928a8693493 Author: Richard Biener <rguent...@suse.de> Date: Mon May 27 09:40:19 2024 +0200 tree-optimization/115220 - fix store sinking virtual operand constraints The following makes sure the virtual operand updating when sinking stores works for the case we ignore paths to kills. The final sink location might not post-dominate the original stmt location which would require inserting of a virtual PHI which we do not support. PR tree-optimization/115220 PR tree-optimization/115226 * tree-ssa-sink.cc (statement_sink_location): When ignoring paths to kills when sinking stores make sure the final sink location is still post-dominated by the original one. Otherwise we'd need to insert a PHI node to merge virtual operands. * gcc.dg/torture/pr115220.c: New testcase. * gcc.dg/torture/pr115226.c: New testcase.
