[Bug tree-optimization/47271] [4.6 Regression] if-conversion removes a test (if), the function generates invalid outputs
dnovillo at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Feb 2 17:49:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47271
--- Comment #18 from Diego Novillo <dnovillo at gcc dot gnu.org> 2011-02-02 17:46:36 UTC ---
Author: dnovillo
Date: Wed Feb 2 17:46:33 2011
New Revision: 169581
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169581
Log:
Fix PR47271: only if-convert full writes.
2011-01-25 Sebastian Pop <sebastian.pop@amd.com>
Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/47271
* tree-if-conv.c (bb_postdominates_preds): New.
(if_convertible_bb_p): Call bb_postdominates_preds.
(if_convertible_loop_p_1): Compute CDI_POST_DOMINATORS.
(predicate_scalar_phi): Call bb_postdominates_preds.
* gcc.dg/tree-ssa/ifc-pr47271.c: New.
Added:
branches/google/integration/gcc/testsuite/gcc.dg/tree-ssa/ifc-pr47271.c
Modified:
branches/google/integration/gcc/ChangeLog
branches/google/integration/gcc/testsuite/ChangeLog
branches/google/integration/gcc/tree-if-conv.c
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