[PATCH] D159098: [NFC][AMDGPU] Small cleanup to R600 CF Finalizer

[Luke Drummond via Phabricator via llvm-commits]

ldrumm added a comment.

This now asserts for `renamable $t0_xy = VTX_READ_64_eg killed renamable $t0_x, 0, 1`

`DstMI` is set to zero which is apparently an invalid `Register`

`TRI->getMatchingSuperReg(t0_xy, 1, R600_Reg128RegClass)` is the culprit returning zero. Is that expected? I see t0_Xy is part of the R600_Reg64 class, but not part of the 128bit register class.


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  https://reviews.llvm.org/D159098/new/

https://reviews.llvm.org/D159098