gimple-ssa-strength-reduction.c (replace_mult_candidate): Update candidate table when replacing a candidate statement.

gcc:

2013-08-03  Bill Schmidt  <wschmidt@vnet.linux.ibm.com>

	* gimple-ssa-strength-reduction.c (replace_mult_candidate): Update
	candidate table when replacing a candidate statement.
	(replace_rhs_if_not_dup): Likewise.
	(replace_one_candidate): Likewise.

gcc/testsuite:

2013-08-03  Bill Schmidt  <wschmidt@vnet.linux.ibm.com>

	* gcc.dg/torture/pr57993-2.cpp: New.

From-SVN: r201466