[PATCH] D157305: [ValueTracking] Use switch for Intrinsics in `isKnownToBePowerOfTwo`; NFC

[Noah Goldstein via Phabricator via llvm-commits]

goldstein.w.n created this revision.
goldstein.w.n added reviewers: nikic, Allen.
Herald added subscribers: StephenFan, hiraditya.
Herald added a project: All.
goldstein.w.n requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D157305

Files:
  llvm/lib/Analysis/ValueTracking.cpp


Index: llvm/lib/Analysis/ValueTracking.cpp
===================================================================
--- llvm/lib/Analysis/ValueTracking.cpp
+++ llvm/lib/Analysis/ValueTracking.cpp
@@ -2129,11 +2129,20 @@
       return isKnownToBeAPowerOfTwo(U.get(), OrZero, NewDepth, RecQ);
     });
   }
+  case Instruction::Invoke:
   case Instruction::Call: {
-    Value *X, *Y;
-    if (match(I, m_MaxOrMin(m_Value(X), m_Value(Y))))
-      return isKnownToBeAPowerOfTwo(X, OrZero, Depth, Q) &&
-             isKnownToBeAPowerOfTwo(Y, OrZero, Depth, Q);
+    if (auto *II = dyn_cast<IntrinsicInst>(I)) {
+      switch (II->getIntrinsicID()) {
+      case Intrinsic::umax:
+      case Intrinsic::smax:
+      case Intrinsic::umin:
+      case Intrinsic::smin:
+        return isKnownToBeAPowerOfTwo(II->getArgOperand(1), OrZero, Depth, Q) &&
+               isKnownToBeAPowerOfTwo(II->getArgOperand(0), OrZero, Depth, Q);
+      default:
+        break;
+      }
+    }
     return false;
   }
   default:


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