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r142035 - in /trunk/gcc: ChangeLog loop-iv.c si...
- From: rakdver at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Thu, 20 Nov 2008 08:05:14 -0000
- Subject: r142035 - in /trunk/gcc: ChangeLog loop-iv.c si...
Author: rakdver
Date: Thu Nov 20 08:05:12 2008
New Revision: 142035
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142035
Log:
PR rtl-optimization/32283
* tree-ssa-loop-niter.c (scev_probably_wraps_p): Use type of the base
of the induction variable to decide whether it may wrap.
* tree-ssa-loop-ivopts.c (rewrite_use_compare): Emit the initialization
of the bound before the loop.
* simplify-rtx.c (simplify_binary_operation_1): Add two simplifications
regarding AND.
(simplify_plus_minus): Only fail if no simplification is possible.
* loop-iv.c (simple_rhs_p): Consider reg + reg and reg << cst simple.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/loop-iv.c
trunk/gcc/simplify-rtx.c
trunk/gcc/tree-ssa-loop-ivopts.c
trunk/gcc/tree-ssa-loop-niter.c