re PR tree-optimization/60930 (Wrong folding of - ((unsigned long long) a * (unsigned long long) (unsigned int)-1))

[gcc]

2014-04-25  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR tree-optimization/60930
	* gimple-ssa-strength-reduction.c (create_mul_imm_cand):  Reject
	creating a multiply candidate by folding two constant
	multiplicands when the result overflows.

[gcc/testsuite]

2014-04-25  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR tree-optimization/60930
	* gcc.dg/torture/pr60930.c:  New test.

From-SVN: r209805