[Bug tree-optimization/61452] [4.8 Regression] hang at -O1 and -Os on x86_64-linux-gnu
rguenth at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Sep 9 14:46:00 GMT 2014
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61452
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Sep 9 14:45:57 2014
New Revision: 215081
URL: https://gcc.gnu.org/viewcvs?rev=215081&root=gcc&view=rev
Log:
2014-09-09 Richard Biener <rguenther@suse.de>
Backport from mainline
2014-06-11 Richard Biener <rguenther@suse.de>
PR tree-optimization/61452
* tree-ssa-sccvn.c (visit_phi): Remove pointless setting of
expr and has_constants in case we found a leader.
(simplify_binary_expression): Always valueize operands first.
(simplify_unary_expression): Likewise.
* gcc.dg/torture/pr61452.c: New testcase.
Added:
branches/gcc-4_8-branch/gcc/testsuite/gcc.dg/torture/pr61452.c
Modified:
branches/gcc-4_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
branches/gcc-4_8-branch/gcc/tree-ssa-sccvn.c
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