https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101278
--- Comment #5 from CVS 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:4a87605938428f6c4c62d5b92cfc183cd2b2554e commit r12-1952-g4a87605938428f6c4c62d5b92cfc183cd2b2554e Author: Richard Biener <rguent...@suse.de> Date: Thu Jul 1 11:16:01 2021 +0200 tree-optimization/101278 - handle self-use in DSE analysis DSE store classification short-cuts the to-be classified stmt itself from chaining but fails to first check whether the store uses itself which can be the case when it is a call with the LHS also passed by value as argument. 2021-07-01 Richard Biener <rguent...@suse.de> PR tree-optimization/101278 * tree-ssa-dse.c (dse_classify_store): First check for uses, then ignore stmt for chaining purposes. * gcc.dg/torture/pr101278.c: New testcase.
