[PATCH] D83360: [InstSimplify] Remove select ?, undef, X -> X and select ?, X, undef -> X

[David Majnemer via Phabricator via cfe-commits]

majnemer added inline comments.


================
Comment at: llvm/lib/Analysis/InstructionSimplify.cpp:4121-4125
-  if (isa<UndefValue>(TrueVal))   // select ?, undef, X -> X
-    return FalseVal;
-  if (isa<UndefValue>(FalseVal))   // select ?, X, undef -> X
-    return TrueVal;
-
----------------
Can we still do these optimizations when `X` is a frozen value?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D83360/new/

https://reviews.llvm.org/D83360