2010-08-12 Richard Guenther <rguenther@suse.de>
PR tree-optimization/45232
* tree-ssa-reassoc.c (can_reassociate_p): Disable re-association
for types with undefined overflow.
(reassociate_bb): Allow re-associating of bit and min/max
operations for types with undefined overflow.
* tree-ssa-forwprop.c (associate_plusminus): New function.
(tree_ssa_forward_propagate_single_use_vars): Call it.
* gcc.dg/tree-ssa/pr44133.c: Adjust warning location.
* gcc.dg/tree-ssa/loop-7.c: Adjust.
* gcc.dg/tree-ssa/reassoc-1.c: XFAIL.
* gcc.dg/tree-ssa/reassoc-20.c: Add reassoc-1.c variant with
unsigned arithmetic.
* gcc.dg/tree-ssa/reassoc-14.c: Use unsigned arithmetic.
* gcc.dg/tree-ssa/reassoc-15.c: Likewise.
* gcc.dg/tree-ssa/reassoc-18.c: Likewise.
* gcc.dg/tree-ssa/reassoc-2.c: XFAIL.
* gcc.dg/tree-ssa/reassoc-21.c: Add reassoc-2.c variant with
unsigned arithmetic.
* gcc.dg/tree-ssa/reassoc-6.c: XFAIL.
* gcc.dg/tree-ssa/reassoc-22.c: Add reassoc-6.c variant with
unsigned arithmetic.
* gcc.dg/tree-ssa/reassoc-7.c: Use unsigned arithmetic.
* gcc.dg/tree-ssa/reassoc-9.c: XFAIL.
* gcc.dg/tree-ssa/reassoc-23.c: Add reassoc-9.c variant with
unsigned arithmetic.
* gcc.dg/tree-ssa/ssa-pre-2.c: Adjust.
* gcc.dg/tree-ssa/negate.c: Adjust.
* gcc.dg/vect/vect-1.c: Adjust.
* gfortran.dg/reassoc_6.f: XFAIL.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@163190
138bc75d-0d04-0410-961f-
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