[PATCH] D17475: MachineCopyPropagation: Catch copies of the form A<-B; A<-B

Matthias Braun via llvm-commits llvm-commits at lists.llvm.org
Thu Feb 25 10:57:30 PST 2016

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In http://reviews.llvm.org/D17475#361922, @qcolombet wrote:

> Hi Jun,
> I’d rather not start messing with reserved registers in a generic way.
> If you want to catch your example, maybe this is something you can teach in the AArch64RedundantCopyElimination pass.
> Cheers,
> -Quentin

Uh, I think this has probably worked before and fails after my changes, I don't want to cause regressions here...



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