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Richard Guenther 7f879c9615 re PR tree-optimization/34099 (optimizer problem)
2007-11-16  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/34099
	* tree-ssa-ccp.c (likely_value): Use a whitelist for operators
	that produce UNDEFINED result if at least one of its operands
	is UNDEFINED.  By default the result is only UNDEFINED if all
	operands are UNDEFINED.

	* g++.dg/torture/pr3499.C: New testcase.
	* gcc.c-torture/execute/pr34099.c: Likewise.

From-SVN: r130222
2007-11-16 10:10:05 +00:00
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gcc re PR tree-optimization/34099 (optimizer problem) 2007-11-16 10:10:05 +00:00
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libstdc++-v3 2007-11-16 Paolo Carlini <pcarlini@suse.de> 2007-11-15 23:32:10 +00:00
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