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Difference between stack pointer and frame address during codegeneration
- From: Øyvind Harboe <oyvind dot harboe at zylin dot com>
- To: gcc at gcc dot gnu dot org
- Date: Wed, 02 Mar 2005 13:12:22 +0100
- Subject: Difference between stack pointer and frame address during codegeneration
Is there an existing technique to figure out the difference between
the frame address and the stack pointer during code generation of
arbitary instructions?
This is kinda related to frame pointer -> stack pointer elimination, but
available during code generation.
I'm not quite sure, but I think frame ointer to stack pointer
elimination can fail. If this is the case, is it because the difference
between frame pointer and stack pointer is not a constant or some other
reason?
I'm just curious and would like to read more.
--
Øyvind Harboe
http://www.zylin.com