Change Function::getIntrinsicID() to return an Intrinsic::ID. NFC.

Now that Intrinsic::ID is a typed enum, we can forward declare it and so return it from this method.

This updates all users which were either using an unsigned to store it, or had a now unnecessary cast.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237810 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Analysis/TargetTransformInfoImpl.h

@@ -365,7 +365,7 @@ public:
       // function.
       NumArgs = F->arg_size();
 
-    if (Intrinsic::ID IID = (Intrinsic::ID)F->getIntrinsicID()) {
+    if (Intrinsic::ID IID = F->getIntrinsicID()) {
       FunctionType *FTy = F->getFunctionType();
       SmallVector<Type *, 8> ParamTys(FTy->param_begin(), FTy->param_end());
       return static_cast<T *>(this)

include/llvm/IR/Function.h

@@ -144,7 +144,7 @@ public:
   /// zero to allow easy checking for whether a function is intrinsic or not.
   /// The particular intrinsic functions which correspond to this value are
   /// defined in llvm/Intrinsics.h.
-  unsigned getIntrinsicID() const LLVM_READONLY { return IntID; }
+  Intrinsic::ID getIntrinsicID() const LLVM_READONLY { return IntID; }
   bool isIntrinsic() const { return getName().startswith("llvm."); }
 
   /// \brief Recalculate the ID for this function if it is an Intrinsic defined

include/llvm/IR/IRBuilder.h

@@ -500,7 +500,7 @@ public:
 private:
   /// \brief Create a call to a masked intrinsic with given Id.
   /// Masked intrinsic has only one overloaded type - data type.
-  CallInst *CreateMaskedIntrinsic(unsigned Id, ArrayRef<Value *> Ops,
+  CallInst *CreateMaskedIntrinsic(Intrinsic::ID Id, ArrayRef<Value *> Ops,
                                   Type *DataTy, const Twine &Name = "");
 
   Value *getCastedInt8PtrValue(Value *Ptr);

include/llvm/IR/InstVisitor.h

@@ -259,7 +259,7 @@ private:
   // Special helper function to delegate to CallInst subclass visitors.
   RetTy delegateCallInst(CallInst &I) {
     if (const Function *F = I.getCalledFunction()) {
-      switch ((Intrinsic::ID)F->getIntrinsicID()) {
+      switch (F->getIntrinsicID()) {
       default:                     DELEGATE(IntrinsicInst);
       case Intrinsic::dbg_declare: DELEGATE(DbgDeclareInst);
       case Intrinsic::dbg_value:   DELEGATE(DbgValueInst);

include/llvm/IR/IntrinsicInst.h

@@ -42,7 +42,7 @@ namespace llvm {
     /// getIntrinsicID - Return the intrinsic ID of this intrinsic.
     ///
     Intrinsic::ID getIntrinsicID() const {
-      return (Intrinsic::ID)getCalledFunction()->getIntrinsicID();
+      return getCalledFunction()->getIntrinsicID();
     }
 
     // Methods for support type inquiry through isa, cast, and dyn_cast:

lib/Analysis/BasicAliasAnalysis.cpp

@@ -775,7 +775,7 @@ BasicAliasAnalysis::getModRefBehavior(const Function *F) {
     return DoesNotAccessMemory;
 
   // For intrinsics, we can check the table.
-  if (unsigned iid = F->getIntrinsicID()) {
+  if (Intrinsic::ID iid = F->getIntrinsicID()) {
 #define GET_INTRINSIC_MODREF_BEHAVIOR
 #include "llvm/IR/Intrinsics.gen"
 #undef GET_INTRINSIC_MODREF_BEHAVIOR

lib/Analysis/InstructionSimplify.cpp

@@ -3587,9 +3587,9 @@ static Value *SimplifyCall(Value *V, IterTy ArgBegin, IterTy ArgEnd,
   if (!F)
     return nullptr;
 
-  if (unsigned IID = F->getIntrinsicID())
+  if (Intrinsic::ID IID = F->getIntrinsicID())
     if (Value *Ret =
-        SimplifyIntrinsic((Intrinsic::ID) IID, ArgBegin, ArgEnd, Q, MaxRecurse))
+        SimplifyIntrinsic(IID, ArgBegin, ArgEnd, Q, MaxRecurse))
       return Ret;
 
   if (!canConstantFoldCallTo(F))

lib/CodeGen/GCRootLowering.cpp

@@ -142,7 +142,7 @@ static bool CouldBecomeSafePoint(Instruction *I) {
   // llvm.gcroot is safe because it doesn't do anything at runtime.
   if (CallInst *CI = dyn_cast<CallInst>(I))
     if (Function *F = CI->getCalledFunction())
-      if (unsigned IID = F->getIntrinsicID())
+      if (Intrinsic::ID IID = F->getIntrinsicID())
         if (IID == Intrinsic::gcroot)
           return false;
 

lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

@@ -5450,7 +5450,7 @@ void SelectionDAGBuilder::visitCall(const CallInst &I) {
             return;
         }
       }
-      if (unsigned IID = F->getIntrinsicID()) {
+      if (Intrinsic::ID IID = F->getIntrinsicID()) {
         RenameFn = visitIntrinsicCall(I, IID);
         if (!RenameFn)
           return;

lib/IR/AutoUpgrade.cpp

@@ -233,9 +233,8 @@ bool llvm::UpgradeIntrinsicFunction(Function *F, Function *&NewFn) {
   // Upgrade intrinsic attributes.  This does not change the function.
   if (NewFn)
     F = NewFn;
-  if (unsigned id = F->getIntrinsicID())
+  if (Intrinsic::ID id = F->getIntrinsicID())
-    F->setAttributes(Intrinsic::getAttributes(F->getContext(),
+    F->setAttributes(Intrinsic::getAttributes(F->getContext(), id));
-                                              (Intrinsic::ID)id));
   return Upgraded;
 }
 

lib/IR/IRBuilder.cpp

@@ -235,13 +235,13 @@ CallInst *IRBuilderBase::CreateMaskedStore(Value *Val, Value *Ptr,
 
 /// Create a call to a Masked intrinsic, with given intrinsic Id,
 /// an array of operands - Ops, and one overloaded type - DataTy
-CallInst *IRBuilderBase::CreateMaskedIntrinsic(unsigned Id,
+CallInst *IRBuilderBase::CreateMaskedIntrinsic(Intrinsic::ID Id,
                                                ArrayRef<Value *> Ops,
                                                Type *DataTy,
                                                const Twine &Name) {
   Module *M = BB->getParent()->getParent();
   Type *OverloadedTypes[] = { DataTy };
-  Value *TheFn = Intrinsic::getDeclaration(M, (Intrinsic::ID)Id, OverloadedTypes);
+  Value *TheFn = Intrinsic::getDeclaration(M, Id, OverloadedTypes);
   return createCallHelper(TheFn, Ops, this, Name);
 }
 

lib/IR/Verifier.cpp

@@ -2390,7 +2390,7 @@ void Verifier::visitCallInst(CallInst &CI) {
     verifyMustTailCall(CI);
 
   if (Function *F = CI.getCalledFunction())
-    if (Intrinsic::ID ID = (Intrinsic::ID)F->getIntrinsicID())
+    if (Intrinsic::ID ID = F->getIntrinsicID())
       visitIntrinsicFunctionCall(ID, CI);
 }
 

lib/Target/AArch64/AArch64FastISel.cpp

@@ -3269,7 +3269,7 @@ bool AArch64FastISel::foldXALUIntrinsic(AArch64CC::CondCode &CC,
     std::swap(LHS, RHS);
 
   // Simplify multiplies.
-  unsigned IID = II->getIntrinsicID();
+  Intrinsic::ID IID = II->getIntrinsicID();
   switch (IID) {
   default:
     break;
@@ -3537,7 +3537,7 @@ bool AArch64FastISel::fastLowerIntrinsicCall(const IntrinsicInst *II) {
       std::swap(LHS, RHS);
 
     // Simplify multiplies.
-    unsigned IID = II->getIntrinsicID();
+    Intrinsic::ID IID = II->getIntrinsicID();
     switch (IID) {
     default:
       break;

lib/Transforms/ObjCARC/ARCInstKind.cpp

@@ -239,7 +239,7 @@ ARCInstKind llvm::objcarc::GetARCInstKind(const Value *V) {
         ARCInstKind Class = GetFunctionClass(F);
         if (Class != ARCInstKind::CallOrUser)
           return Class;
-        unsigned ID = F->getIntrinsicID();
+        Intrinsic::ID ID = F->getIntrinsicID();
         if (isInertIntrinsic(ID))
           return ARCInstKind::None;
         if (isUseOnlyIntrinsic(ID))

lib/Transforms/Utils/SimplifyLibCalls.cpp

@@ -973,7 +973,7 @@ Value *LibCallSimplifier::optimizeUnaryDoubleFP(CallInst *CI, IRBuilder<> &B,
   // floor((double)floatval) -> (double)floorf(floatval)
   if (Callee->isIntrinsic()) {
     Module *M = CI->getParent()->getParent()->getParent();
-    Intrinsic::ID IID = (Intrinsic::ID) Callee->getIntrinsicID();
+    Intrinsic::ID IID = Callee->getIntrinsicID();
     Function *F = Intrinsic::getDeclaration(M, IID, B.getFloatTy());
     V = B.CreateCall(F, V);
   } else {

lib/Transforms/Vectorize/BBVectorize.cpp

@@ -662,7 +662,7 @@ namespace {
       Function *F = I->getCalledFunction();
       if (!F) return false;
 
-      Intrinsic::ID IID = (Intrinsic::ID) F->getIntrinsicID();
+      Intrinsic::ID IID = F->getIntrinsicID();
       if (!IID) return false;
 
       switch(IID) {
@@ -1098,7 +1098,7 @@ namespace {
     CallInst *CI = dyn_cast<CallInst>(I);
     Function *FI;
     if (CI && (FI = CI->getCalledFunction())) {
-      Intrinsic::ID IID = (Intrinsic::ID) FI->getIntrinsicID();
+      Intrinsic::ID IID = FI->getIntrinsicID();
       if (IID == Intrinsic::powi || IID == Intrinsic::ctlz ||
           IID == Intrinsic::cttz) {
         Value *A1I = CI->getArgOperand(1),
@@ -2770,7 +2770,7 @@ namespace {
         continue;
       } else if (isa<CallInst>(I)) {
         Function *F = cast<CallInst>(I)->getCalledFunction();
-        Intrinsic::ID IID = (Intrinsic::ID) F->getIntrinsicID();
+        Intrinsic::ID IID = F->getIntrinsicID();
         if (o == NumOperands-1) {
           BasicBlock &BB = *I->getParent();
 

lib/Transforms/Vectorize/SLPVectorizer.cpp

@@ -2382,7 +2382,7 @@ Value *BoUpSLP::vectorizeTree(TreeEntry *E) {
       Intrinsic::ID IID  = Intrinsic::not_intrinsic;
       Value *ScalarArg = nullptr;
       if (CI && (FI = CI->getCalledFunction())) {
-        IID = (Intrinsic::ID) FI->getIntrinsicID();
+        IID = FI->getIntrinsicID();
       }
       std::vector<Value *> OpVecs;
       for (int j = 0, e = CI->getNumArgOperands(); j < e; ++j) {