r270844 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Fri May  3 10:39:56 2019
New Revision: 270844

URL: https://gcc.gnu.org/viewcvs?rev=270844&root=gcc&view=rev
Log:
2019-05-03  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/88963
	* tree-ssa-forwprop.c (pass_forwprop::execute): Rewrite
	vector loads feeding only BIT_FIELD_REFs to component
	loads.  Rewrite stores fed by CONSTRUCTORs to component
	stores.

	* gcc.dg/tree-ssa/ssa-fre-31.c: Disable forwprop.
	* gcc.target/i386/pr88963-1.c: New testcase.
	* gcc.target/i386/pr88963-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr88963-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr88963-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-31.c
    trunk/gcc/tree-ssa-forwprop.c