r261833 - in /branches/gcc-6-branch/gcc: Change...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Jun 21 07:24:06 2018
New Revision: 261833

URL: https://gcc.gnu.org/viewcvs?rev=261833&root=gcc&view=rev
Log:
2018-06-21  Richard Biener  <rguenther@suse.de>

	Backport from mainline
	2017-08-21  Richard Biener  <rguenther@suse.de>

	PR middle-end/81884
	* tree-ssa-alias.c (stmt_kills_ref_p): Handle array accesses
	at struct end conservatively when comparing common bases.

	* g++.dg/torture/pr81884.C: New testcase.

	2017-05-04  Richard Biener  <rguenther@suse.de>
 
 	* tree.c (array_at_struct_end_p): Handle arrays at struct
	end with flexarrays more conservatively.  Refactor and treat
	arrays of arrays or aggregates more strict.  Fix
	VIEW_CONVERT_EXPR handling.

	2018-04-06  Richard Biener  <rguenther@suse.de>

	PR middle-end/85244
	* tree-dfa.c (get_ref_base_and_extent): Reset seen_variable_array_ref
	after seeing a component reference with an adjacent field.  Treat
	refs to arrays at struct end of external decls similar to
	refs to unconstrained commons.

	* gcc.dg/torture/pr85244-1.c: New testcase.
	* gcc.dg/torture/pr85244-2.c: Likewise.

	* gcc.dg/tree-prof/pr66295.c: Remove unsupported dg-error scanning.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/torture/pr81884.C
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr85244-1.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr85244-2.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/tree-prof/pr66295.c
    branches/gcc-6-branch/gcc/tree-dfa.c
    branches/gcc-6-branch/gcc/tree-ssa-alias.c
    branches/gcc-6-branch/gcc/tree.c