[LLVMdev] tablegen question

[Micah Villmow]

How do you specify in a tablegen pattern that all destination registers are also source registers? I know I could just duplicate them, but I was wondering if there was a way it could be done without doing this. Basically an inplace operation.

So for example, take a hypothetical swap w/ sqrt.
if I had swap $ds0, $ds1

which swaps ds1 and ds0 and applies sqrt on the registers afterwards.

Micah
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