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Re: regrename creates invalid insn
Andreas Schwab <schwab@linux-m68k.org> writes:
> Ian Lance Taylor <iant@google.com> writes:
>
>> Andreas Schwab <schwab@linux-m68k.org> writes:
>>
>>> Ian Lance Taylor <iant@google.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.
--
Andreas Schwab, schwab@linux-m68k.org
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"And now for something completely different."