https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78546
--- Comment #18 from Richard Biener <rguenth at gcc dot gnu.org> --- Author: rguenth Date: Tue Nov 29 07:48:43 2016 New Revision: 242953 URL: https://gcc.gnu.org/viewcvs?rev=242953&root=gcc&view=rev Log: 2016-11-29 Richard Biener <rguent...@suse.de> PR middle-end/78546 * match.pd: Add CST1 - (CST2 - A) -> CST3 + A missing case. * gcc.dg/tree-ssa/forwprop-36.c: New testcase. Added: trunk/gcc/testsuite/gcc.dg/tree-ssa/forwprop-36.c Modified: trunk/gcc/ChangeLog trunk/gcc/match.pd trunk/gcc/testsuite/ChangeLog