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[Bug tree-optimization/48616] -ftree-vectorize -mxop miscompiles right shift
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 18 Apr 2011 06:56:07 +0000
- Subject: [Bug tree-optimization/48616] -ftree-vectorize -mxop miscompiles right shift
- Auto-submitted: auto-generated
- References: <bug-48616-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48616
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-04-18 06:55:17 UTC ---
Author: jakub
Date: Mon Apr 18 06:55:13 2011
New Revision: 172638
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172638
Log:
PR tree-optimization/48616
* tree-vect-stmts.c (vectorizable_shift): If SLP, determine
whether the shift is by scalar or vector based on whether all SLP
scalar stmts have the same rhs.
* gcc.dg/pr48616.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr48616.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-vect-stmts.c