[IR] Inline some Function accessors

I checked that all of these out-of-line methods previously compiled to
simple loads and bittests, so they are pretty good candidates for
inlining. In particular, arg_size() and arg_empty() are popular and are
just two loads, so they seem worth inlining.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297963 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/IR/Function.h

@@ -122,10 +122,12 @@ public:
 
   // Provide fast operand accessors.
   DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Value);
-  /// Returns the type of the ret val.
-  Type *getReturnType() const;
   /// Returns the FunctionType for me.
-  FunctionType *getFunctionType() const;
+  FunctionType *getFunctionType() const {
+    return cast<FunctionType>(getValueType());
+  }
+  /// Returns the type of the ret val.
+  Type *getReturnType() const { return getFunctionType()->getReturnType(); }
 
   /// getContext - Return a reference to the LLVMContext associated with this
   /// function.
@@ -133,10 +135,16 @@ public:
 
   /// isVarArg - Return true if this function takes a variable number of
   /// arguments.
-  bool isVarArg() const;
+  bool isVarArg() const { return getFunctionType()->isVarArg(); }
 
-  bool isMaterializable() const;
-  void setIsMaterializable(bool V);
+  bool isMaterializable() const {
+    return getGlobalObjectSubClassData() & (1 << IsMaterializableBit);
+  }
+  void setIsMaterializable(bool V) {
+    unsigned Mask = 1 << IsMaterializableBit;
+    setGlobalObjectSubClassData((~Mask & getGlobalObjectSubClassData()) |
+                                (V ? Mask : 0u));
+  }
 
   /// getIntrinsicID - This method returns the ID number of the specified
   /// function, or Intrinsic::not_intrinsic if the function is not an
@@ -582,8 +590,8 @@ public:
 
 /// @}
 
-  size_t arg_size() const;
-  bool arg_empty() const;
+  size_t arg_size() const { return getFunctionType()->getNumParams(); }
+  bool arg_empty() const { return arg_size() == 0; }
 
   /// \brief Check whether this function has a personality function.
   bool hasPersonalityFn() const {

include/llvm/IR/GlobalObject.h

@@ -63,8 +63,17 @@ public:
   }
   void setAlignment(unsigned Align);
 
-  unsigned getGlobalObjectSubClassData() const;
-  void setGlobalObjectSubClassData(unsigned Val);
+  unsigned getGlobalObjectSubClassData() const {
+    unsigned ValueData = getGlobalValueSubClassData();
+    return ValueData >> GlobalObjectBits;
+  }
+
+  void setGlobalObjectSubClassData(unsigned Val) {
+    unsigned OldData = getGlobalValueSubClassData();
+    setGlobalValueSubClassData((OldData & GlobalObjectMask) |
+                               (Val << GlobalObjectBits));
+    assert(getGlobalObjectSubClassData() == Val && "representation error");
+  }
 
   /// Check if this global has a custom object file section.
   ///

lib/IR/Function.cpp

@@ -185,32 +185,10 @@ bool Argument::hasAttribute(Attribute::AttrKind Kind) const {
 // Helper Methods in Function
 //===----------------------------------------------------------------------===//
 
-bool Function::isMaterializable() const {
-  return getGlobalObjectSubClassData() & (1 << IsMaterializableBit);
-}
-
-void Function::setIsMaterializable(bool V) {
-  unsigned Mask = 1 << IsMaterializableBit;
-  setGlobalObjectSubClassData((~Mask & getGlobalObjectSubClassData()) |
-                              (V ? Mask : 0u));
-}
-
 LLVMContext &Function::getContext() const {
   return getType()->getContext();
 }
 
-FunctionType *Function::getFunctionType() const {
-  return cast<FunctionType>(getValueType());
-}
-
-bool Function::isVarArg() const {
-  return getFunctionType()->isVarArg();
-}
-
-Type *Function::getReturnType() const {
-  return getFunctionType()->getReturnType();
-}
-
 void Function::removeFromParent() {
   getParent()->getFunctionList().remove(getIterator());
 }
@@ -296,13 +274,6 @@ void Function::stealArgumentListFrom(Function &Src) {
   Src.setValueSubclassData(Src.getSubclassDataFromValue() | (1 << 0));
 }
 
-size_t Function::arg_size() const {
-  return getFunctionType()->getNumParams();
-}
-bool Function::arg_empty() const {
-  return getFunctionType()->getNumParams() == 0;
-}
-
 // dropAllReferences() - This function causes all the subinstructions to "let
 // go" of all references that they are maintaining.  This allows one to
 // 'delete' a whole class at a time, even though there may be circular

lib/IR/Globals.cpp

@@ -93,18 +93,6 @@ void GlobalObject::setAlignment(unsigned Align) {
   assert(getAlignment() == Align && "Alignment representation error!");
 }
 
-unsigned GlobalObject::getGlobalObjectSubClassData() const {
-  unsigned ValueData = getGlobalValueSubClassData();
-  return ValueData >> GlobalObjectBits;
-}
-
-void GlobalObject::setGlobalObjectSubClassData(unsigned Val) {
-  unsigned OldData = getGlobalValueSubClassData();
-  setGlobalValueSubClassData((OldData & GlobalObjectMask) |
-                             (Val << GlobalObjectBits));
-  assert(getGlobalObjectSubClassData() == Val && "representation error");
-}
-
 void GlobalObject::copyAttributesFrom(const GlobalValue *Src) {
   GlobalValue::copyAttributesFrom(Src);
   if (const auto *GV = dyn_cast<GlobalObject>(Src)) {