1 files changed, 0 insertions, 6 deletions
diff --git a/llvm/lib/Analysis/ValueTracking.cpp b/llvm/lib/Analysis/ValueTracking.cpp
index 66cae4e..584e645 100644
--- a/llvm/lib/Analysis/ValueTracking.cpp
+++ b/llvm/lib/Analysis/ValueTracking.cpp
@@ -270,12 +270,6 @@ bool llvm::haveNoCommonBitsSet(const Value *LHS, const Value *RHS,
       match(LHS, m_c_Xor(m_c_And(m_Specific(RHS), m_Value(Y)), m_Deferred(Y))))
     return true;
 
-  // Peek through extends:
-  // (ext Y) op ext(~Y)
-  if (match(LHS, m_ZExtOrSExt(m_Value(Y))) &&
-      match(RHS, m_ZExtOrSExt(m_Not(m_Specific(Y)))))
-    return true;
-
   // Look for: (A & B) op ~(A | B)
   {
     Value *A, *B;