Index: clang/lib/CodeGen/CGBuiltin.cpp
===================================================================
--- clang/lib/CodeGen/CGBuiltin.cpp
+++ clang/lib/CodeGen/CGBuiltin.cpp
@@ -368,10 +368,10 @@
   llvm::Value *Src0 = CGF.EmitScalarExpr(E->getArg(0));
 
   if (CGF.Builder.getIsFPConstrained()) {
-    Value *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
+    Function *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
     return CGF.Builder.CreateConstrainedFPCall(F, { Src0 });
   } else {
-    Value *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
+    Function *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
     return CGF.Builder.CreateCall(F, Src0);
   }
 }
@@ -385,10 +385,10 @@
   llvm::Value *Src1 = CGF.EmitScalarExpr(E->getArg(1));
 
   if (CGF.Builder.getIsFPConstrained()) {
-    Value *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
+    Function *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
     return CGF.Builder.CreateConstrainedFPCall(F, { Src0, Src1 });
   } else {
-    Value *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
+    Function *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
     return CGF.Builder.CreateCall(F, { Src0, Src1 });
   }
 }
@@ -403,10 +403,10 @@
   llvm::Value *Src2 = CGF.EmitScalarExpr(E->getArg(2));
 
   if (CGF.Builder.getIsFPConstrained()) {
-    Value *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
+    Function *F = CGF.CGM.getIntrinsic(ConstrainedIntrinsicID, Src0->getType());
     return CGF.Builder.CreateConstrainedFPCall(F, { Src0, Src1, Src2 });
   } else {
-    Value *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
+    Function *F = CGF.CGM.getIntrinsic(IntrinsicID, Src0->getType());
     return CGF.Builder.CreateCall(F, { Src0, Src1, Src2 });
   }
 }
Index: llvm/include/llvm/IR/IRBuilder.h
===================================================================
--- llvm/include/llvm/IR/IRBuilder.h
+++ llvm/include/llvm/IR/IRBuilder.h
@@ -2421,18 +2421,16 @@
         Args, OpBundles, Name, FPMathTag);
   }
 
-  // Deprecated [opaque pointer types]
   CallInst *CreateConstrainedFPCall(
-      Value *Callee, ArrayRef<Value *> Args, const Twine &Name = "",
+      Function *Callee, ArrayRef<Value *> Args, const Twine &Name = "",
       Optional<fp::RoundingMode> Rounding = None,
       Optional<fp::ExceptionBehavior> Except = None) {
     llvm::SmallVector<Value *, 6> UseArgs;
 
     for (auto *OneArg : Args)
       UseArgs.push_back(OneArg);
-    Function *F = cast<Function>(Callee);
     bool HasRoundingMD = false;
-    switch (F->getIntrinsicID()) {
+    switch (Callee->getIntrinsicID()) {
     default:
       break;
 #define INSTRUCTION(NAME, NARG, ROUND_MODE, INTRINSIC, DAGN)  \
@@ -2445,9 +2443,7 @@
       UseArgs.push_back(getConstrainedFPRounding(Rounding));
     UseArgs.push_back(getConstrainedFPExcept(Except));
 
-    CallInst *C = CreateCall(
-        cast<FunctionType>(Callee->getType()->getPointerElementType()), Callee,
-        UseArgs, Name);
+    CallInst *C = CreateCall(Callee, UseArgs, Name);
     setConstrainedFPCallAttr(C);
     return C;
   }