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r143921 - in /branches/alias-improvements/gcc: ...


Author: rguenth
Date: Wed Feb  4 12:14:54 2009
New Revision: 143921

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=143921
Log:
2009-02-04  Richard Guenther  <rguenther@suse.de>

	Revert
	* tree-ssa-loop-niter.c (chain_of_csts_start): Use NULL_TREE.
	Simplify test for memory referencing statement.
	(get_val_for): Handle &a[i_1] by bailing out.
	(loop_niter_by_eval): Handle get_va_for bailing out.

	* tree-ssa-loop-niter.c (chain_of_csts_start): Use NULL_TREE.
	Simplify test for memory referencing statement.  Exclude
	non-invariant ADDR_EXPRs.

Modified:
    branches/alias-improvements/gcc/ChangeLog.alias
    branches/alias-improvements/gcc/tree-ssa-loop-niter.c


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