diff --git a/llvm/include/llvm/CodeGen/TargetLowering.h b/llvm/include/llvm/CodeGen/TargetLowering.h
--- a/llvm/include/llvm/CodeGen/TargetLowering.h
+++ b/llvm/include/llvm/CodeGen/TargetLowering.h
@@ -4036,7 +4036,7 @@
   /// string itself isn't empty, there was an error parsing.
   virtual AsmOperandInfoVector ParseConstraints(const DataLayout &DL,
                                                 const TargetRegisterInfo *TRI,
-                                                ImmutableCallSite CS) const;
+                                                const CallBase &Call) const;
 
   /// Examine constraint type and operand type and determine a weight value.
   /// The operand object must already have been set up with the operand type.
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp
--- a/llvm/lib/CodeGen/CodeGenPrepare.cpp
+++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp
@@ -43,7 +43,6 @@
 #include "llvm/IR/Argument.h"
 #include "llvm/IR/Attributes.h"
 #include "llvm/IR/BasicBlock.h"
-#include "llvm/IR/CallSite.h"
 #include "llvm/IR/Constant.h"
 #include "llvm/IR/Constants.h"
 #include "llvm/IR/DataLayout.h"
@@ -4542,8 +4541,7 @@
                                     const TargetRegisterInfo &TRI) {
   const Function *F = CI->getFunction();
   TargetLowering::AsmOperandInfoVector TargetConstraints =
-      TLI.ParseConstraints(F->getParent()->getDataLayout(), &TRI,
-                            ImmutableCallSite(CI));
+      TLI.ParseConstraints(F->getParent()->getDataLayout(), &TRI, *CI);
 
   for (unsigned i = 0, e = TargetConstraints.size(); i != e; ++i) {
     TargetLowering::AsmOperandInfo &OpInfo = TargetConstraints[i];
@@ -5192,7 +5190,7 @@
   const TargetRegisterInfo *TRI =
       TM->getSubtargetImpl(*CS->getFunction())->getRegisterInfo();
   TargetLowering::AsmOperandInfoVector TargetConstraints =
-      TLI->ParseConstraints(*DL, TRI, CS);
+      TLI->ParseConstraints(*DL, TRI, *CS);
   unsigned ArgNo = 0;
   for (unsigned i = 0, e = TargetConstraints.size(); i != e; ++i) {
     TargetLowering::AsmOperandInfo &OpInfo = TargetConstraints[i];
diff --git a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp
@@ -182,13 +182,12 @@
       }
 
       // Look for inline asm that clobbers the SP register.
-      if (isa<CallInst>(I) || isa<InvokeInst>(I)) {
-        ImmutableCallSite CS(&I);
-        if (isa<InlineAsm>(CS.getCalledValue())) {
+      if (auto *Call = dyn_cast<CallBase>(&I)) {
+        if (isa<InlineAsm>(Call->getCalledValue())) {
           unsigned SP = TLI->getStackPointerRegisterToSaveRestore();
           const TargetRegisterInfo *TRI = MF->getSubtarget().getRegisterInfo();
           std::vector<TargetLowering::AsmOperandInfo> Ops =
-              TLI->ParseConstraints(Fn->getParent()->getDataLayout(), TRI, CS);
+              TLI->ParseConstraints(Fn->getParent()->getDataLayout(), TRI, *Call);
           for (TargetLowering::AsmOperandInfo &Op : Ops) {
             if (Op.Type == InlineAsm::isClobber) {
               // Clobbers don't have SDValue operands, hence SDValue().
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -8012,8 +8012,7 @@
 
   const TargetLowering &TLI = DAG.getTargetLoweringInfo();
   TargetLowering::AsmOperandInfoVector TargetConstraints = TLI.ParseConstraints(
-      DAG.getDataLayout(), DAG.getSubtarget().getRegisterInfo(),
-      ImmutableCallSite(&Call));
+      DAG.getDataLayout(), DAG.getSubtarget().getRegisterInfo(), Call);
 
   // First Pass: Calculate HasSideEffects and ExtraFlags (AlignStack,
   // AsmDialect, MayLoad, MayStore).
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -4318,10 +4318,10 @@
 TargetLowering::AsmOperandInfoVector
 TargetLowering::ParseConstraints(const DataLayout &DL,
                                  const TargetRegisterInfo *TRI,
-                                 ImmutableCallSite CS) const {
+                                 const CallBase &Call) const {
   /// Information about all of the constraints.
   AsmOperandInfoVector ConstraintOperands;
-  const InlineAsm *IA = cast<InlineAsm>(CS.getCalledValue());
+  const InlineAsm *IA = cast<InlineAsm>(Call.getCalledValue());
   unsigned maCount = 0; // Largest number of multiple alternative constraints.
 
   // Do a prepass over the constraints, canonicalizing them, and building up the
@@ -4344,25 +4344,25 @@
     case InlineAsm::isOutput:
       // Indirect outputs just consume an argument.
       if (OpInfo.isIndirect) {
-        OpInfo.CallOperandVal = const_cast<Value *>(CS.getArgument(ArgNo++));
+        OpInfo.CallOperandVal = Call.getArgOperand(ArgNo++);
         break;
       }
 
       // The return value of the call is this value.  As such, there is no
       // corresponding argument.
-      assert(!CS.getType()->isVoidTy() &&
+      assert(!Call.getType()->isVoidTy() &&
              "Bad inline asm!");
-      if (StructType *STy = dyn_cast<StructType>(CS.getType())) {
+      if (StructType *STy = dyn_cast<StructType>(Call.getType())) {
         OpInfo.ConstraintVT =
             getSimpleValueType(DL, STy->getElementType(ResNo));
       } else {
         assert(ResNo == 0 && "Asm only has one result!");
-        OpInfo.ConstraintVT = getSimpleValueType(DL, CS.getType());
+        OpInfo.ConstraintVT = getSimpleValueType(DL, Call.getType());
       }
       ++ResNo;
       break;
     case InlineAsm::isInput:
-      OpInfo.CallOperandVal = const_cast<Value *>(CS.getArgument(ArgNo++));
+      OpInfo.CallOperandVal = Call.getArgOperand(ArgNo++);
       break;
     case InlineAsm::isClobber:
       // Nothing to do.
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
--- a/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUTargetTransformInfo.cpp
@@ -714,9 +714,8 @@
 
   const DataLayout &DL = CI->getModule()->getDataLayout();
   const SIRegisterInfo *TRI = ST->getRegisterInfo();
-  ImmutableCallSite CS(CI);
   TargetLowering::AsmOperandInfoVector TargetConstraints
-    = TLI->ParseConstraints(DL, ST->getRegisterInfo(), CS);
+    = TLI->ParseConstraints(DL, ST->getRegisterInfo(), *CI);
 
   const int TargetOutputIdx = Indices.empty() ? -1 : Indices[0];
 
diff --git a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
--- a/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
+++ b/llvm/lib/Target/AMDGPU/SIISelLowering.cpp
@@ -11049,9 +11049,8 @@
       // consider, so this assumes if any value is SGPR, the overall register
       // also needs to be SGPR.
       const SIRegisterInfo *SIRI = Subtarget->getRegisterInfo();
-      ImmutableCallSite CS(CI);
       TargetLowering::AsmOperandInfoVector TargetConstraints = ParseConstraints(
-          MF.getDataLayout(), Subtarget->getRegisterInfo(), CS);
+          MF.getDataLayout(), Subtarget->getRegisterInfo(), *CI);
       for (auto &TC : TargetConstraints) {
         if (TC.Type == InlineAsm::isOutput) {
           ComputeConstraintToUse(TC, SDValue());