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From: HBO043%DJUKFA11.BITNET@cunyvm.cuny.edu (Christoph van Wuellen)
Newsgroups: comp.os.minix
Subject: 386 assembler question
Message-ID: <40219@nigel.ee.udel.edu>
Date: 29 Dec 90 09:47:38 GMT
Sender: mmdf@ee.udel.edu
Lines: 11

I have two problems with my 386 compiler:

- is test[bwl] %reg,%reg functionally equivalent to cmp[bwl] $0,%reg?
  (so the peephole optimizer changes cmp $0 to test

- is clr[bwl] a generic 386 instruction? Sun 'as' knows clr, so I changed
  mov $0 to clr, but gas (1.37) does not know the clr instruction.
  the peephole optimizer changes mov $0 to clr, but if it is all the same,
  it is not worth it.

C.v.W.