https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111456
--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The trunk branch has been updated by Andrew Pinski <pins...@gcc.gnu.org>: https://gcc.gnu.org/g:c3c6f30496d945b77dcb7f4ad8c3f8094f5a64a4 commit r14-4280-gc3c6f30496d945b77dcb7f4ad8c3f8094f5a64a4 Author: Andrew Pinski <apin...@marvell.com> Date: Wed Sep 20 14:54:31 2023 -0700 MATCH: Simplify `(A ==/!= B) &/| (((cast)A) CMP C)` This patch adds support to the pattern for `(A == B) &/| (A CMP C)` where the second A could be casted to a different type. Some were handled correctly if using seperate `if` statements but not if combined with BIT_AND/BIT_IOR. In the case of pr111456-1.c, the testcase would pass if `--param=logical-op-non-short-circuit=0` was used but now can be optimized always. OK? Bootstrapped and tested on x86_64-linux-gnu. PR tree-optimization/106164 PR tree-optimization/111456 gcc/ChangeLog: * match.pd (`(A ==/!= B) & (A CMP C)`): Support an optional cast on the second A. (`(A ==/!= B) | (A CMP C)`): Likewise. gcc/testsuite/ChangeLog: * gcc.dg/tree-ssa/cmpbit-6.c: New test. * gcc.dg/tree-ssa/cmpbit-7.c: New test. * gcc.dg/tree-ssa/pr111456-1.c: New test.
