if (!REG_P (reg))
return 0;
+ /* Use the default ABI if the type of the function isn't known.
+ The scheme for handling interoperability between different ABIs
+ requires us to be able to tell when we're calling a function with
+ a nondefault ABI. */
+ const predefined_function_abi &abi = (fntype
+ ? fntype_abi (fntype)
+ : default_function_abi);
regno = REGNO (reg);
nregs = hard_regno_nregs (regno, TYPE_MODE (type));
for (i = 0; i < nregs; i++)
- if (! call_used_or_fixed_reg_p (regno + i))
+ if (!fixed_regs[regno + i] && !abi.clobbers_full_reg_p (regno + i))
return 1;
return 0;