Re: [patch 13/17] Immediate Values - x86 Optimization
From: H. Peter Anvin
Date: Wed Apr 09 2008 - 14:16:33 EST
Mathieu Desnoyers wrote:
Ok, so the most flexible solution that I see, that should fit for both
x86 and x86_64 would be :
1 byte : "=q" : "a", "b", "c", or "d" register for the i386. For
x86-64 it is equivalent to "r" class (for 8-bit
instructions that do not use upper halves).
2, 4, 8 bytes : "=r" : A register operand is allowed provided that it is in a
general register.
Any reason to keep carrying this completely misleading comment chunk still?
-hpa
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