[PATCH] D150378: [Instsimplfy] X == Y ? 0 : X - Y --> X - Y

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n added inline comments.


================
Comment at: llvm/lib/Analysis/InstructionSimplify.cpp:4252
+      if (Opcode == Instruction::Sub && NewOps[0] == NewOps[1])
+        return ::simplifyInstructionWithOperands(I, NewOps, Q, MaxRecurse - 1);
+
----------------
I think this can just return zero.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150378/new/

https://reviews.llvm.org/D150378