From 0815b579b31cb3129f732bb7ea36fd6ba6949e98 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Tue, 9 Aug 2011 17:23:49 +0000
Subject: Move the creation of the record type for the state of Objective-C
 fast enumerations from the ASTContext into CodeGen, so that we don't need to
 serialize it to AST files. This appears to be the last of the low-hanging
 fruit for SpecialTypes.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137124 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CodeGenModule.cpp | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

(limited to 'lib/CodeGen/CodeGenModule.cpp')

diff --git a/lib/CodeGen/CodeGenModule.cpp b/lib/CodeGen/CodeGenModule.cpp
index 13c8f6080f..d5d34634db 100644
--- a/lib/CodeGen/CodeGenModule.cpp
+++ b/lib/CodeGen/CodeGenModule.cpp
@@ -1925,6 +1925,41 @@ CodeGenModule::GetAddrOfConstantString(const StringLiteral *Literal) {
   return GV;
 }
 
+QualType CodeGenModule::getObjCFastEnumerationStateType() {
+  if (ObjCFastEnumerationStateType.isNull()) {
+    RecordDecl *D = CreateRecordDecl(Context, TTK_Struct, 
+                                     Context.getTranslationUnitDecl(),
+                      &Context.Idents.get("__objcFastEnumerationState"));
+    D->startDefinition();
+    
+    QualType FieldTypes[] = {
+      Context.UnsignedLongTy,
+      Context.getPointerType(Context.getObjCIdType()),
+      Context.getPointerType(Context.UnsignedLongTy),
+      Context.getConstantArrayType(Context.UnsignedLongTy,
+                           llvm::APInt(32, 5), ArrayType::Normal, 0)
+    };
+    
+    for (size_t i = 0; i < 4; ++i) {
+      FieldDecl *Field = FieldDecl::Create(Context,
+                                           D,
+                                           SourceLocation(),
+                                           SourceLocation(), 0,
+                                           FieldTypes[i], /*TInfo=*/0,
+                                           /*BitWidth=*/0,
+                                           /*Mutable=*/false,
+                                           /*HasInit=*/false);
+      Field->setAccess(AS_public);
+      D->addDecl(Field);
+    }
+    
+    D->completeDefinition();
+    ObjCFastEnumerationStateType = Context.getTagDeclType(D);
+  }
+  
+  return ObjCFastEnumerationStateType;
+}
+
 /// GetStringForStringLiteral - Return the appropriate bytes for a
 /// string literal, properly padded to match the literal type.
 std::string CodeGenModule::GetStringForStringLiteral(const StringLiteral *E) {
-- 
cgit v1.2.3-70-g09d2