src/dst register for andI_rReg_imm255 and andI_rReg_imm65535

Vladimir Kozlov Vladimir.Kozlov at Sun.COM
Mon Sep 21 11:10:34 PDT 2009


Can you tell more about the problem you see?
The instructions you pointing use dst register only:

"movzbl  $dst, $dst\t# int & 0xFF"


Christian Thalinger wrote:
> Christian Thalinger wrote:
>> Hi!
>> Is there a reason why both andI_rReg_imm255 and andI_rReg_imm65535 only
>> operate on a src register and not on src and dst?  Because of that we
>> almost always need a spill right before which we don't need.
> Sorry... on x86_64.  -- Christian

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