GitLab

	* combine.c (try_combine): Do simplification only call of
	subst() on i2 even when i1 is present. Update comments.

	testsuite/
	* gcc.target/arm/unsigned-extend-1.c: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@171138 138bc75d-0d04-0410-961f-82ee72b054a4