if (xtensa_call_save_reg(regno))
{
rtx x = gen_rtx_PLUS (Pmode, stack_pointer_rtx, GEN_INT (offset));
- rtx reg;
offset -= UNITS_PER_WORD;
- emit_move_insn (reg = gen_rtx_REG (SImode, regno),
+ emit_move_insn (gen_rtx_REG (SImode, regno),
gen_frame_mem (SImode, x));
- if (regno == A0_REG && sibcall_p)
- emit_use (reg);
}
}
+ if (sibcall_p)
+ emit_use (gen_rtx_REG (SImode, A0_REG));
if (cfun->machine->current_frame_size > 0)
{
/* Remove hard FP register from the preferred reload registers set. */
CLEAR_HARD_REG_BIT (reg_class_contents[(int)RL_REGS],
HARD_FRAME_POINTER_REGNUM);
+
+ /* Register A0 holds the return address upon entry to a function
+ for the CALL0 ABI, but unlike the windowed register ABI, it is
+ not reserved for this purpose and may hold other values after
+ the return address has been saved. */
+ if (!TARGET_WINDOWED_ABI)
+ fixed_regs[A0_REG] = 0;
}
/* Map hard register number to register class */