From c6077eff8b9963b59de21e5d1dfae7a6ea75da36 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Thu, 31 Jan 2013 00:53:21 +0000
Subject: [PATCH] Remove the AttrBuilder version of the Attribute::get
 function.

The AttrBuilder is there to build up multiple attributes. The Attribute class
represents only one attribute at a time. So remove this unnecessary builder
creator method.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174010 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/IR/Attributes.h |  3 +--
 lib/IR/Attributes.cpp        | 31 ++++++++++++-------------------
 lib/IR/Verifier.cpp          |  4 +++-
 3 files changed, 16 insertions(+), 22 deletions(-)

diff --git a/include/llvm/IR/Attributes.h b/include/llvm/IR/Attributes.h
index 29eaec1d0df..f53cfd6a080 100644
--- a/include/llvm/IR/Attributes.h
+++ b/include/llvm/IR/Attributes.h
@@ -113,8 +113,7 @@ public:
   //===--------------------------------------------------------------------===//
 
   /// \brief Return a uniquified Attribute object.
-  static Attribute get(LLVMContext &Context, AttrKind Kind);
-  static Attribute get(LLVMContext &Context, AttrBuilder &B);
+  static Attribute get(LLVMContext &Context, AttrKind Kind, Constant *Val = 0);
 
   /// \brief Return a uniquified Attribute object that has the specific
   /// alignment set.
diff --git a/lib/IR/Attributes.cpp b/lib/IR/Attributes.cpp
index 98c12b5d855..59e86f02a0e 100644
--- a/lib/IR/Attributes.cpp
+++ b/lib/IR/Attributes.cpp
@@ -30,24 +30,15 @@ using namespace llvm;
 // Attribute Construction Methods
 //===----------------------------------------------------------------------===//
 
-Attribute Attribute::get(LLVMContext &Context, AttrKind Kind) {
-  AttrBuilder B;
-  return Attribute::get(Context, B.addAttribute(Kind));
-}
-
-Attribute Attribute::get(LLVMContext &Context, AttrBuilder &B) {
-  // If there are no attributes, return an empty Attribute class.
-  if (!B.hasAttributes())
-    return Attribute();
-
-  assert(std::distance(B.begin(), B.end()) == 1 &&
-         "The Attribute object should represent one attribute only!");
+Attribute Attribute::get(LLVMContext &Context, AttrKind Kind,
+                         Constant *Val) {
+  if (Kind == None) return Attribute();
 
   // Otherwise, build a key to look up the existing attributes.
   LLVMContextImpl *pImpl = Context.pImpl;
   FoldingSetNodeID ID;
-  ConstantInt *CI = ConstantInt::get(Type::getInt64Ty(Context), B.Raw());
-  ID.AddPointer(CI);
+  ID.AddInteger(Kind);
+  ID.AddPointer(Val);
 
   void *InsertPoint;
   AttributeImpl *PA = pImpl->AttrsSet.FindNodeOrInsertPos(ID, InsertPoint);
@@ -55,7 +46,9 @@ Attribute Attribute::get(LLVMContext &Context, AttrBuilder &B) {
   if (!PA) {
     // If we didn't find any existing attributes of the same shape then create a
     // new one and insert it.
-    PA = new AttributeImpl(Context, CI);
+    PA = (!Val) ?
+      new AttributeImpl(Context, Kind) :
+      new AttributeImpl(Context, Kind, Val);
     pImpl->AttrsSet.InsertNode(PA, InsertPoint);
   }
 
@@ -64,14 +57,14 @@ Attribute Attribute::get(LLVMContext &Context, AttrBuilder &B) {
 }
 
 Attribute Attribute::getWithAlignment(LLVMContext &Context, uint64_t Align) {
-  AttrBuilder B;
-  return get(Context, B.addAlignmentAttr(Align));
+  return get(Context, Attribute::Alignment,
+             ConstantInt::get(Type::getInt64Ty(Context), Align));
 }
 
 Attribute Attribute::getWithStackAlignment(LLVMContext &Context,
                                            uint64_t Align) {
-  AttrBuilder B;
-  return get(Context, B.addStackAlignmentAttr(Align));
+  return get(Context, Attribute::StackAlignment,
+             ConstantInt::get(Type::getInt64Ty(Context), Align));
 }
 
 //===----------------------------------------------------------------------===//
diff --git a/lib/IR/Verifier.cpp b/lib/IR/Verifier.cpp
index 5da74481e4f..babc295126e 100644
--- a/lib/IR/Verifier.cpp
+++ b/lib/IR/Verifier.cpp
@@ -745,7 +745,9 @@ void Verifier::VerifyFunctionAttrs(FunctionType *FT,
   AttrBuilder NotFn(Attrs, AttributeSet::FunctionIndex);
   NotFn.removeFunctionOnlyAttrs();
   Assert1(!NotFn.hasAttributes(), "Attribute '" +
-          Attribute::get(V->getContext(), NotFn).getAsString() +
+          AttributeSet::get(V->getContext(),
+                            AttributeSet::FunctionIndex,
+                            NotFn).getAsString(AttributeSet::FunctionIndex) +
           "' do not apply to the function!", V);
 
   // Check for mutually incompatible attributes.