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r152449 - in /trunk/gcc: ChangeLog testsuite/Ch...


Author: rguenth
Date: Mon Oct  5 13:18:09 2009
New Revision: 152449

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=152449
Log:
2009-10-05  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/23821
	* tree-vrp.c (vrp_finalize): Do not perform copy propagation.
	* tree-ssa-dom.c (cprop_operand): Do not propagate copies into
	simple IV increments.

	* gcc.dg/torture/pr23821.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr23821.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-dom.c
    trunk/gcc/tree-vrp.c


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