re PR tree-optimization/50717 (Silent code gen fault with incorrect widening of multiply)

re PR tree-optimization/50717 (Silent code gen fault with incorrect widening of multiply)

2011-10-18  Andrew Stubbs  <ams@codesourcery.com>

	PR tree-optimization/50717

	gcc/
	* tree-ssa-math-opts.c (is_widening_mult_p): Remove the 'type'
	parameter.  Calculate 'type' from stmt.
	(convert_mult_to_widen): Update call the is_widening_mult_p.
	(convert_plusminus_to_widen): Likewise.

	gcc/testsuite/
	* gcc.dg/pr50717-1.c: New file.
	* gcc.target/arm/wmul-12.c: Correct types.
	* gcc.target/arm/wmul-8.c: Correct types.

From-SVN: r180164