https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96370
--- Comment #8 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:819fc71b49af8366e6b23d2b57ebb6fb66f1a292 commit r10-8748-g819fc71b49af8366e6b23d2b57ebb6fb66f1a292 Author: Richard Biener <rguent...@suse.de> Date: Thu Jul 30 10:24:42 2020 +0200 tree-optimization/96370 - make reassoc expr rewrite more robust In the face of the more complex tricks in reassoc with respect to negate processing it can happen that the expression rewrite is fooled to recurse on a leaf and pick up a bogus expression code. The following patch makes the expression rewrite more robust in providing the expression code to it directly since it is the same for all operations in a chain. 2020-07-30 Richard Biener <rguent...@suse.de> PR tree-optimization/96370 * tree-ssa-reassoc.c (rewrite_expr_tree): Add operation code parameter and use it instead of picking it up from the stmt that is being rewritten. (reassociate_bb): Pass down the operation code. * gcc.dg/pr96370.c: New testcase. (cherry picked from commit 2c558d2655cb22f472c83e8296b5cd2a92365cd3)
