[PATCH] D98564: [AArch64] Peephole rule to remove redundant cmp after cset.

[Pavel Iliin via Phabricator via llvm-commits]

ilinpv added a comment.

In D98564#2624774 <https://reviews.llvm.org/D98564#2624774>, @dmgreen wrote:

> I see that this is an extension to the existing peephole optimizations, but is there any reason not to do this during ISel?

This optimization relies on liveness analysis to check that condition flags are not used in successors (see areCFlagsAliveInSuccessors) and I guess it would not fit ISel.


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