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Commit 87e1e42b authored by Richard Guenther's avatar Richard Guenther Committed by Richard Biener
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tree-ssa-ccp.c (ccp_fold): Also read from constant values and fold constant aggregate refs. 

2008-03-15  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-ccp.c (ccp_fold): Also read from constant values
	and fold constant aggregate refs.
	(fold_const_aggregate_ref): Handle string constants
	and constructors in ARRAY_REFs.  Handle INDIRECT_REF.
	(evaluate_stmt): Simplify now that ccp_fold folds constant
	aggregate refs.

	* gcc.dg/tree-ssa/ssa-ccp-16.c: New testcase.

From-SVN: r133257
parent 10727683
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