re PR tree-optimization/17656 (internal compiler error: in replace_immediate_uses, at tree-ssa.c:1041)


	PR tree-optimization/17656
	* tree-ssa.c (replace_immediate_uses): When replacing a
	constant, if the call to fold_stmt produced a different
	statement, get an appropriate statement pointer by scanning
	STMT's basic block.

	PR tree-optimization/17656
	* testsuite/gcc.c-torture/compile/pr17656.c: New test.

From-SVN: r89233