[Bug middle-end/23868] New: builtin_apply uses wrong mode for multi-hard-register return values

[amylaar at gcc dot gnu dot org]

apply_result_size uses reg_raw_mode for every register that is flagged with
FUNCTION_VALUE_REGNO_P.  However, reg_raw_mode is the mode to save a single
hard register, while a return value can be held in multiple consecutive hard
registers, and FUNCTION_VALUE_REGNO_P has to be true only for the first one of
these. The problem can be observed at the moment (at least) for sh-elf as:
FAIL: gcc.dg/builtin-apply4.c execution test

-- 
           Summary: builtin_apply uses wrong mode for multi-hard-register
                    return values
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P2
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: amylaar at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23868