Specifying Number of register to use

[kchak@cs.wisc.edu]

Hi,
  Is there a way I can restrict the number of register gcc will use in the
code generated by it ? For example, if I want gcc to use only 8 GPR and
8FPR or say 8 GPR and no FPR at all, how would I go about doing that ?

Thanks in advance,
Koushik