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[Bug tree-optimization/49749] Reassociation rank algorithm does not include all non-NULL operands
- From: "wschmidt at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 21 Jul 2011 20:28:40 +0000
- Subject: [Bug tree-optimization/49749] Reassociation rank algorithm does not include all non-NULL operands
- Auto-submitted: auto-generated
- References: <bug-49749-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49749
--- Comment #14 from William J. Schmidt <wschmidt at gcc dot gnu.org> 2011-07-21 20:27:21 UTC ---
Author: wschmidt
Date: Thu Jul 21 20:27:17 2011
New Revision: 176585
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176585
Log:
2011-07-21 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
PR tree-optimization/49749
* tree-ssa-reassoc.c (PHI_LOOP_BIAS): New constant.
(phi_loop_bias): New function.
(get_rank): Bias rank upward for loop-carried dependencies; fix
errors in operand scan conditions.
Modified:
branches/ibm/gcc-4_6-branch/gcc/ChangeLog.ibm
branches/ibm/gcc-4_6-branch/gcc/tree-ssa-reassoc.c