https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85756
--- Comment #3 from uros at gcc dot gnu.org --- Author: uros Date: Mon May 14 15:53:58 2018 New Revision: 260231 URL: https://gcc.gnu.org/viewcvs?rev=260231&root=gcc&view=rev Log: PR target/85756 * config/i386/i386.md: Disallow non-commutative arithmetics in last twpeephole for mem {+,-,&,|,^}= x; mem != 0 after cmpelim optimization. Use COMMUTATIVE_ARITH_P test rather than != MINUS in the peephole2 before it. testsuite/ChangeLog: * gcc.c-torture/execute/pr85756.c: New test. Added: trunk/gcc/testsuite/gcc.c-torture/execute/pr85756.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/i386/i386.md trunk/gcc/testsuite/ChangeLog