Backported from mainline

	Backported from mainline
	2012-10-24  Jakub Jelinek  <jakub@redhat.com>

	PR debug/54828
	* gimple.h (is_gimple_sizepos): New inline function.
	* gimplify.c (gimplify_one_sizepos): Use it.  Remove useless
	final assignment to expr variable.
	* tree.c (RETURN_TRUE_IF_VAR): Return true also if
	!TYPE_SIZES_GIMPLIFIED (type) and _t is going to be gimplified
	into a local temporary.

	* g++.dg/debug/pr54828.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_7-branch@193166 138bc75d-0d04-0410-961f-82ee72b054a4