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[Bug tree-optimization/58464] [4.9 Regression] Crashes with SIGSEGV (infinite recursion in phi_translate)
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 23 Sep 2013 12:37:19 +0000
- Subject: [Bug tree-optimization/58464] [4.9 Regression] Crashes with SIGSEGV (infinite recursion in phi_translate)
- Auto-submitted: auto-generated
- References: <bug-58464-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58464
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Sep 23 12:37:17 2013
New Revision: 202826
URL: http://gcc.gnu.org/viewcvs?rev=202826&root=gcc&view=rev
Log:
2013-09-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/58464
* tree-ssa-pre.c (phi_trans_lookup): Remove.
(phi_trans_add): Change to add conditionally on being not
present.
(phi_translate_1): Remove recursion detection here.
(phi_translate): Pre-seed the cache with NULL to catch
recursion here in a more generic way.
(bitmap_find_leader): Adjust comment.
(get_representative_for): Dump value-numbers.
(create_expression_by_pieces): Likewise.
(insert_into_preds_of_block): Likewise.
* g++.dg/torture/pr58464.C: New testcase.
Added:
trunk/gcc/testsuite/g++.dg/torture/pr58464.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-pre.c