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Register Allocator query.
- From: Leon Taylor <leon_taylor_007 at yahoo dot co dot in>
- To: gcc at gcc dot gnu dot org
- Date: Fri, 15 Nov 2002 08:00:34 +0000 (GMT)
- Subject: Register Allocator query.
Hi,
In old register allocation scheme, we have
array "reg_allocno" in gcc/global.c
indexed by pseudo regno.
To inhibit register allocator to assign
hard reg for REG rtx, we can assign -1
in reg_allocno for corresponding regno.
i.e.
reg_allocno[i] = -1; for some pseudo regno
and it won't be assigned hard reg.
I am doing some jugglery with code and want to
to do this with an arbitrary pseudo in new reg-
allocator. Is it possible to do this in a convenient
way without modifying too much code?
Thanks and Regards,
Leon.
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