r266140 - in /trunk/gcc: ChangeLog config/i386/...

[jakub@gcc.gnu.org]

Author: jakub
Date: Wed Nov 14 12:36:59 2018
New Revision: 266140

URL: https://gcc.gnu.org/viewcvs?rev=266140&root=gcc&view=rev
Log:
	PR rtl-optimization/87817
	* config/i386/i386.c (ix86_fold_builtin): For _bzhi_u{32,64} if
	last argument has low 8 bits clear, fold to 0.

	* gcc.target/i386/bmi2-bzhi-3.c (main): Add a couple of new tests.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/i386/bmi2-bzhi-3.c