2005-01-29 Richard Guenther <richard.guenther@uni-tuebingen.de>
PR tree-optimization/15791
* fold-const.c (extract_array_ref): New function.
(fold): Fold comparisons between &a[i] and &a[j] or
semantically equivalent trees.
* gcc.dg/tree-ssa/pr15791-1.c: New testcase.
* gcc.dg/tree-ssa/pr15791-2.c: Likewise.
* gcc.dg/tree-ssa/pr15791-3.c: Likewise.
* gcc.dg/tree-ssa/pr15791-4.c: Likewise.
* gcc.dg/tree-ssa/pr15791-5.c: Likewise.
* g++.dg/tree-ssa/pr15791-1.C: Likewise.
* g++.dg/tree-ssa/pr15791-2.C: Likewise.
* g++.dg/tree-ssa/pr15791-3.C: Likewise.
* g++.dg/tree-ssa/pr15791-4.C: Likewise.
* g++.dg/tree-ssa/pr15791-5.C: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@94414
138bc75d-0d04-0410-961f-
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