[PATCH] D49401: TII: Generalize X86's isSafeToClobberEFLAGs

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added a comment.

In https://reviews.llvm.org/D49401#1177010, @MatzeB wrote:

> Also I'd generally recommend to rather look at LivePhysReg/LiveRegUnits for doing liveness queries post-ra. They can be more expensive but give more consistent results...


I want to use this in an SSA pass, not post-RA


https://reviews.llvm.org/D49401