diff options
| -rw-r--r-- | gcc/config/mmix/mmix.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc/config/mmix/mmix.c b/gcc/config/mmix/mmix.c index 40bfb43..db7af7b 100644 --- a/gcc/config/mmix/mmix.c +++ b/gcc/config/mmix/mmix.c @@ -667,10 +667,17 @@ mmix_function_arg_1 (const cumulative_args_t argsp_v, { CUMULATIVE_ARGS *argsp = get_cumulative_args (argsp_v); + /* The mode of the argument will be VOIDmode for the "end_marker". Make sure + we don't ever generate a VOIDmode register; later passes will barf on that. + We may want to use the register number, so return something nominally + useful. Thus, for VOIDmode, use DImode, being the natural mode for the + register. */ + machine_mode mode = arg.mode == VOIDmode ? DImode : arg.mode; + /* Last-argument marker. */ if (arg.end_marker_p ()) return (argsp->regs < MMIX_MAX_ARGS_IN_REGS) - ? gen_rtx_REG (arg.mode, + ? gen_rtx_REG (mode, (incoming ? MMIX_FIRST_INCOMING_ARG_REGNUM : MMIX_FIRST_ARG_REGNUM) + argsp->regs) @@ -678,10 +685,10 @@ mmix_function_arg_1 (const cumulative_args_t argsp_v, return (argsp->regs < MMIX_MAX_ARGS_IN_REGS && !targetm.calls.must_pass_in_stack (arg) - && (GET_MODE_BITSIZE (arg.mode) <= 64 + && (GET_MODE_BITSIZE (mode) <= 64 || argsp->lib || TARGET_LIBFUNC)) - ? gen_rtx_REG (arg.mode, + ? gen_rtx_REG (mode, (incoming ? MMIX_FIRST_INCOMING_ARG_REGNUM : MMIX_FIRST_ARG_REGNUM) |