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[Bug tree-optimization/65963] Missed vectorization of loads strided with << when equivalent * succeeds
- From: "alalaw01 at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 05 Nov 2015 18:40:10 +0000
- Subject: [Bug tree-optimization/65963] Missed vectorization of loads strided with << when equivalent * succeeds
- Auto-submitted: auto-generated
- References: <bug-65963-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65963
--- Comment #2 from alalaw01 at gcc dot gnu.org ---
Author: alalaw01
Date: Thu Nov 5 18:39:38 2015
New Revision: 229825
URL: https://gcc.gnu.org/viewcvs?rev=229825&root=gcc&view=rev
Log:
[PATCH] tree-scalar-evolution.c: Handle LSHIFT by constant
gcc/:
PR tree-optimization/65963
* tree-scalar-evolution.c (interpret_rhs_expr): Try to handle
LSHIFT_EXPRs as equivalent unsigned MULT_EXPRs.
gcc/testsuite/:
* gcc.dg/pr68112.c: New.
* gcc.dg/vect/vect-strided-shift-1.c: New.
Added:
trunk/gcc/testsuite/gcc.dg/pr68112.c
trunk/gcc/testsuite/gcc.dg/vect/vect-strided-shift-1.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-scalar-evolution.c