[PATCH] D19369: VirtRegMap.cpp should not just remove an identity copy which also has a impl-def of a super-reg

[Quentin Colombet via llvm-commits]

qcolombet added a subscriber: qcolombet.
qcolombet added a comment.

We could fix MachineInstr:: isIdentityCopy instead. Indeed, the next optimization that removes them will hit the same issue. Moreover, I do not think we are supposed to have implicit_def around after TwoAddrPass (not entirely sure about that though).

Q.


http://reviews.llvm.org/D19369