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Register allocation - varying numbers
- From: <kchak at cs dot wisc dot edu>
- To: gcc at gcc dot gnu dot org
- Date: Mon, 28 Oct 2002 22:08:30 -0600 (CST)
- Subject: Register allocation - varying numbers
Hi,
I want to vary the number of GPR and FPR that gcc will use in its code
generation. I am particularly interested to do this in i686
architecture. I looked up in the codebase and found definition of
FIRST_PSEUDO_REGISTER etc and also certain bitmap for these in
i386.h. However, I am not certain if these are the place that I need to
change to make this effect. In particular, if I want gcc to generate code
using 8 GPR and 8 FPR 9or say no FPR), what do you I need to do ?
I am a gcc newbie, so any help in this regard will be greatly appreciated!
Thanks,
Koushik Chakraborty