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r241788 - in /branches/gcc-6-branch/gcc: Change...


Author: rguenth
Date: Wed Nov  2 12:47:10 2016
New Revision: 241788

URL: https://gcc.gnu.org/viewcvs?rev=241788&root=gcc&view=rev
Log:
2016-11-02  Richard Biener  <rguenther@suse.de>

	Backport from mainline
	2016-11-02  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78047
	* tree-ssa-structalias.c (push_fields_onto_fieldstack): Initialize
	fake field at offset zero conservatively regarding to may_have_pointers.

	2016-10-31  Richard Biener  <rguenther@suse.de>

	PR lto/78129
	* lto.c (do_whole_program_analysis): Bail out after errors
	from WPA analysis.

	2016-10-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77879
	* tree-ssa-structalias.c (handle_const_call): Properly handle
	NRV return slots.
	(handle_pure_call): Likewise.

	2016-10-06  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77839
	* tree-ssa-sccvn.c (set_ssa_val_to): Forbid value -> constant value
	lattice transition.

	* gcc.dg/torture/pr77839.c: New testcase.

	2016-09-27  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77745
	* tree-ssa-pre.c (eliminate_dom_walker::before_dom_children):
	When removing redundant stores make sure to check compatibility
	of the TBAA state for downstream accesses.
	* tree-ssa-sccvn.c (visit_reference_op_store): Likewise for when
	value-numbering virtual operands for store matches.

	* g++.dg/torture/pr77745.C: New testcase.

	2016-09-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77648
	* tree-ssa-structalias.c (process_constraint): Handle all DEREF
	with complex RHS.
	(make_transitive_closure_constraints): Adjust comment.
	(make_any_offset_constraints): New function.
	(handle_rhs_call): Make sure to first expand a pointer to all
	subfields before transitively closing it.
	(handle_const_call): Likewise.  Properly expand returned
	pointers as well.
	(handle_pure_call): Likewise.

	* gcc.dg/torture/pr77648-1.c: New testcase.
	* gcc.dg/torture/pr77648-2.c: Likewise.

Added:
    branches/gcc-6-branch/gcc/testsuite/g++.dg/torture/pr77745.C
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr77648-1.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr77648-2.c
    branches/gcc-6-branch/gcc/testsuite/gcc.dg/torture/pr77839.c
Modified:
    branches/gcc-6-branch/gcc/ChangeLog
    branches/gcc-6-branch/gcc/lto/ChangeLog
    branches/gcc-6-branch/gcc/lto/lto.c
    branches/gcc-6-branch/gcc/testsuite/ChangeLog
    branches/gcc-6-branch/gcc/tree-ssa-pre.c
    branches/gcc-6-branch/gcc/tree-ssa-sccvn.c
    branches/gcc-6-branch/gcc/tree-ssa-structalias.c


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