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r109961 - in /trunk/gcc: ChangeLog combine.c


Author: bonzini
Date: Thu Jan 19 14:54:57 2006
New Revision: 109961

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=109961
Log:
2006-01-19  Paolo Bonzini  <bonzini@gnu.org>

	* combine.c (try_combine): Do not worry about MEMs wrapped by USEs.
	(expand_compound_operation, expand_field_assignment): Fail if the
	bit lengths of an extract operation are out of range.
	(make_extraction): Compute wanted_inner_mode based on the position
	and length of the extraction.  Make it extraction_mode for non-constant
	positions, and do not modify offset in that case.  When generating a
	new MEM, use a mode that can hold the extraction while keeping correct
	alignment.  Remove code that supported MEMs wrapped by USEs.
	(simplify_shift_const_1, force_to_mode) <case USE>: Remove.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/combine.c


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