r239414 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri Aug 12 12:58:15 2016
New Revision: 239414

URL: https://gcc.gnu.org/viewcvs?rev=239414&root=gcc&view=rev
Log:
2016-08-12  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/57326
	* tree-ssa-pre.c (fully_constant_expression): Handle simplification
	returning an SSA name.
	(phi_translate_1): When fully_constant_expression returns a NAME
	make sure we have a leader for it.

	* gcc.dg/tree-ssa/ssa-pre-32.c: New testcase.
	* gcc.dg/tree-ssa/loadpre14.c: Adjust.
	* gcc.dg/tree-ssa/pr35287.c: Likewise.
	* gcc.target/i386/pr45685.c: Likewise.
	* gcc.dg/tree-ssa/predcom-1.c: Disable PRE.
	* gcc.dg/tree-ssa/predcom-2.c: Likewise.
	* gcc.dg/tree-ssa/predcom-3.c: Likewise.
	* gcc.dg/tree-ssa/ssa-sink-10.c: Likewise.
	* gfortran.dg/pr34163.f90: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-pre-32.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/loadpre14.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr35287.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/predcom-1.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/predcom-2.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/predcom-3.c
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-sink-10.c
    trunk/gcc/testsuite/gcc.target/i386/pr45685.c
    trunk/gcc/testsuite/gfortran.dg/pr34163.f90
    trunk/gcc/tree-ssa-pre.c