gcc:

gcc:
	PR middle-end/30311
	* caller-save.c (add_stored_regs): Only handle SUBREGs if inner
	REG is a hard register.  Do not modify REG before calling
	subreg_nregs.
	* rtlanal.c (subreg_get_info): Don't assert size of XMODE is a
	multiple of the size of YMODE for certain lowpart cases.

gcc/testsuite:
	* gcc.c-torture/compile/pr30311.c: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120329 138bc75d-0d04-0410-961f-82ee72b054a4