r267296 - in /trunk/gcc: ChangeLog testsuite/Ch...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Dec 20 11:39:59 2018
New Revision: 267296

URL: https://gcc.gnu.org/viewcvs?rev=267296&root=gcc&view=rev
Log:
2018-12-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84362
	* tree-ssa-loop-im.c: Include alias.h, builtins.h and tree-dfa.h.
	(struct im_mem_ref): add ref_canonical flag.
	(struct mem_ref_hasher): Use ao_ref as compare_type.
	(mem_ref_hasher::equal): Adjust and add variant comparing ao_ref
	parts.
	(mem_ref_alloc): Take ao_ref parameter, initialize ref_canonical
	member.
	(gather_mem_refs_stmt): Set up ao_ref early and do the lookup
	using it.  If we have non-equal refs canonicalize the one
	in the hashtable used for insertion.
	(tree_ssa_lim_initialize): Adjust.

	* g++.dg/vect/pr84362.cc: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/vect/pr84362.cc
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-im.c