https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110556
--- Comment #13 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-13 branch has been updated by Richard Biener <rgue...@gcc.gnu.org>: https://gcc.gnu.org/g:45e950b542ca598eb8a4a69305fdd96dcb603353 commit r13-7546-g45e950b542ca598eb8a4a69305fdd96dcb603353 Author: Richard Biener <rguent...@suse.de> Date: Thu Jul 6 13:51:55 2023 +0200 tree-optimization/110556 - tail merging still pre-tuples The stmt comparison function for GIMPLE_ASSIGNs for tail merging still looks like it deals with pre-tuples IL. The following attempts to fix this, not only comparing the first operand (sic!) of stmts but all of them plus also compare the operation code. PR tree-optimization/110556 * tree-ssa-tail-merge.cc (gimple_equal_p): Check assign code and all operands of non-stores. * gcc.dg/torture/pr110556.c: New testcase. (cherry picked from commit 7b16686ef882ab141276f0e36a9d4ce1d755f64a)
