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r132755 - in /trunk/gcc: ChangeLog simplify-rtx.c


Author: rsandifo
Date: Thu Feb 28 20:02:09 2008
New Revision: 132755

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=132755
Log:
gcc/
	* simplify-rtx.c (simplify_unary_operation_1): Extend the handling
	of SUBREG_PROMOTED_VAR_P to cope with cases where the extended value
	is smaller than the original promoted value.
	(simplify_subreg): If OP is a SUBREG, try to preserve its
	SUBREG_PROMOTED_VAR_P information.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/simplify-rtx.c


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