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[Bug tree-optimization/54767] [4.7 Regression] Incorrect code generated with "-O2 -fcheck=bounds"
- 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: Tue, 05 Feb 2013 12:54:17 +0000
- Subject: [Bug tree-optimization/54767] [4.7 Regression] Incorrect code generated with "-O2 -fcheck=bounds"
- Auto-submitted: auto-generated
- References: <bug-54767-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54767
--- Comment #13 from Richard Biener <rguenth at gcc dot gnu.org> 2013-02-05 12:54:17 UTC ---
Author: rguenth
Date: Tue Feb 5 12:54:12 2013
New Revision: 195754
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195754
Log:
2013-02-05 Richard Biener <rguenther@suse.de>
PR tree-optimization/54767
* tree-vrp.c (vrp_visit_phi_node): For PHI arguments coming via
backedges drop all symbolical range information.
(execute_vrp): Compute backedges.
* gfortran.fortran-torture/execute/pr54767.f90: New testcase.
Added:
branches/gcc-4_7-branch/gcc/testsuite/gfortran.fortran-torture/execute/pr54767.f90
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
branches/gcc-4_7-branch/gcc/tree-vrp.c