[PATCH] D35689: AMDGPU: Replace i64 add/sub lowering

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In https://reviews.llvm.org/D35689#816402, @rampitec wrote:

> How does it work on pre-SI now?


It replaces the SCC uses/defs with VCC and the VOP2 variants. It scans forward until it finds a def of SCC or the end of the block


https://reviews.llvm.org/D35689