[PATCH] D110863: X86InstrInfo: Do not stop on flag users between flag producers

[Matthias Braun via Phabricator via llvm-commits]

MatzeB added a comment.

In D110863#3036078 <https://reviews.llvm.org/D110863#3036078>, @pengfei wrote:

> I have concern about the live interval of eflags. If we killed the eflags after the first use, we are free to insert or schedule instructions that implicit-def eflags. Will these be affected if we keep eflags alive?

If you are worried about pre-existing kill-flags? We remove them in line 4497 when we actually perform the optimization.


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  https://reviews.llvm.org/D110863/new/

https://reviews.llvm.org/D110863