Messages in this thread | | | Date | Tue, 18 Sep 2007 15:27:52 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [patch 4/7] Immediate Values - i386 Optimization |
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H. Peter Anvin wrote: > Allowing different registers should be doable, but if so, one would have > to put 0: at the *end* of the instruction and use (0f)-4 instead, since > the non-%eax forms are one byte longer. >
OK, that's already a problem since its using "=r" as the constraint.
> This also seems "safer", since an imm32 is always the last thing in the > instruction.
Good idea. If gas/gcc generates entirely the wrong addressing mode, then we've got bigger problems.
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