[Bug middle-end/49968] New: ICE in calls.c:3141 / assert after emit_stack_restore

[uweigand at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49968

           Summary: ICE in calls.c:3141 / assert after emit_stack_restore
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: uweig...@gcc.gnu.org
                CC: r...@gcc.gnu.org
            Target: spu-elf


I'm seeing ICEs in calls.c:3141 on spu-elf after this patch went in:
http://gcc.gnu.org/ml/gcc-patches/2011-08/msg00075.html

One test case showing this problem is:
gcc.c-torture/compile/20030224-1.c

The problem here is that SPU's restore_stack_block generates insn
sequences that do not terminate in a SET of stack_pointer_rtx,
see this for further discussion:
http://gcc.gnu.org/ml/gcc-patches/2011-08/msg00326.html