Hi : I'm working on a fpu which cannot work fpload insns right, so I have to use a GPR reg as temp reg to first load mem into GPR then move GPR into fpu register.
I have handled most cases but the case gcc handling call clobbered fpu registers. since it is in reload pass, I have no available GPR to use here. I'm wondering whether I could use temporary registers such as $t0...$t9 in this case. It's safe as far as I can see, since the save/restore operation is around calling insn, and there are MIPS_PROLOGUE_TEMP and MIPS_EPILOGUE_TEMP which used in the prologue/epilogue cases. but I am not very sure about it, Any suggestion? Thank you all. -- Best Regards.
