re PR middle-end/48814 (Incorrect scalar increment result)

2012-03-16  Richard Guenther  <rguenther@suse.de>
	Kai Tietz  <ktietz@redhat.com>

	PR middle-end/48814
	* gimplify.c (gimplify_self_mod_expr): Evaluate postfix
	side-effects completely in the pre-queue and use a temporary
	for the result.

	* gcc.c-torture/execute/pr48814-1.c: New test.
	* gcc.c-torture/execute/pr48814-2.c: New test.
	* gcc.dg/tree-ssa/assign-1.c: New test.
	* gcc.dg/tree-ssa/assign-2.c: New test.
	* gcc.dg/tree-ssa/assign-3.c: New test.

Co-Authored-By: Kai Tietz <ktietz@redhat.com>

From-SVN: r185465