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Re: regrename creates invalid insn
Andreas Schwab <firstname.lastname@example.org> writes:
> Ian Lance Taylor <email@example.com> writes:
>> Andreas Schwab <firstname.lastname@example.org> writes:
>>> Ian Lance Taylor <email@example.com> writes:
>>>> But it also looks like the pattern should use a match_scratch.
>>> It is also used as input in operand 2.
>> Sorry, I missed that.
> That appears not to be an issue actually, there is already one use of
> match_scratch together with a matching constraint in *cmpdi_internal.
> But then, using match_scratch instead of match_operand doesn't really
> fix the bug either (it only helps a simplified test case, but not the
> original one).
It doesn't actually change anything (I was confused because 4.7/4.8 no
longer generates the overlapping output for the simplified testcase).
Andreas Schwab, firstname.lastname@example.org
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"And now for something completely different."