r260231 - in /trunk/gcc: ChangeLog config/i386/...

Mon May 14 15:53:00 GMT 2018

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