r175949 - in /trunk/gcc: ChangeLog combine.c si...

[bernds@gcc.gnu.org]

Author: bernds
Date: Wed Jul  6 23:56:28 2011
New Revision: 175949

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175949
Log:
	Revert:
	* simplify-rtx.c (simplify_const_binary_operation): Use the
	shift_truncation_mask hook instead of performing modulo by
	width.  Compare against mode precision, not bitsize.
	* combine.c (combine_simplify_rtx, simplify_shift_const_1):
	Use shift_truncation_mask instead of constructing the value
	manually.

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