2011-08-19  Andrew Stubbs  <ams@codesourcery.com>

	gcc/
	* tree-ssa-math-opts.c (is_widening_mult_rhs_p): Add new argument
	'type'.
	Use 'type' from caller, not inferred from 'rhs'.
	Don't reject non-conversion statements. Do return lhs in this case.
	(is_widening_mult_p): Add new argument 'type'.
	Use 'type' from caller, not inferred from 'stmt'.
	Pass type to is_widening_mult_rhs_p.
	(convert_mult_to_widen): Pass type to is_widening_mult_p.
	(convert_plusminus_to_widen): Likewise.

	gcc/testsuite/
	* gcc.target/arm/wmul-8.c: New file.

From-SVN: r177907