Index: llvm/include/llvm/Support/InstructionCost.h
===================================================================
--- llvm/include/llvm/Support/InstructionCost.h
+++ llvm/include/llvm/Support/InstructionCost.h
@@ -196,14 +196,6 @@
     return *this >= RHS2;
   }
 
-  static InstructionCost min(InstructionCost LHS, InstructionCost RHS) {
-    return LHS < RHS ? LHS : RHS;
-  }
-
-  static InstructionCost max(InstructionCost LHS, InstructionCost RHS) {
-    return LHS > RHS ? LHS : RHS;
-  }
-
   void print(raw_ostream &OS) const;
 };
 
Index: llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
===================================================================
--- llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
+++ llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp
@@ -6296,7 +6296,7 @@
         Cost -= UserCost;
       }
 
-      MinCost = InstructionCost::min(MinCost, Cost);
+      MinCost = std::min(MinCost, Cost);
 
       if (Cost.isValid() && Cost < -SLPCostThreshold) {
         LLVM_DEBUG(dbgs() << "SLP: Vectorizing list at cost:" << Cost << ".\n");
Index: llvm/unittests/Support/InstructionCostTest.cpp
===================================================================
--- llvm/unittests/Support/InstructionCostTest.cpp
+++ llvm/unittests/Support/InstructionCostTest.cpp
@@ -59,6 +59,6 @@
   EXPECT_EQ(*(VThree.getValue()), 3);
   EXPECT_EQ(IThreeA.getValue(), None);
 
-  EXPECT_EQ(InstructionCost::min(VThree, VNegTwo), -2);
-  EXPECT_EQ(InstructionCost::max(VThree, VSix), 6);
+  EXPECT_EQ(std::min(VThree, VNegTwo), -2);
+  EXPECT_EQ(std::max(VThree, VSix), 6);
 }