From 6cc590602f41c3e98e8af0023d54296c8eca7910 Mon Sep 17 00:00:00 2001
From: Fariborz Jahanian <fjahanian@apple.com>
Date: Mon, 12 Apr 2010 18:18:10 +0000
Subject: [PATCH] Add some API code for future work.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101052 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/CGObjCGNU.cpp   |  6 ++++++
 lib/CodeGen/CGObjCMac.cpp   | 28 ++++++++++++++++++++++++++++
 lib/CodeGen/CGObjCRuntime.h |  3 +++
 3 files changed, 37 insertions(+)

diff --git a/lib/CodeGen/CGObjCGNU.cpp b/lib/CodeGen/CGObjCGNU.cpp
index d4452000dc..99cce647db 100644
--- a/lib/CodeGen/CGObjCGNU.cpp
+++ b/lib/CodeGen/CGObjCGNU.cpp
@@ -170,6 +170,7 @@ public:
   virtual llvm::Function *ModuleInitFunction();
   virtual llvm::Function *GetPropertyGetFunction();
   virtual llvm::Function *GetPropertySetFunction();
+  virtual llvm::Function *GetCopyStructFunction();
   virtual llvm::Constant *EnumerationMutationFunction();
 
   virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
@@ -1686,6 +1687,11 @@ llvm::Function *CGObjCGNU::GetPropertySetFunction() {
                                                         "objc_setProperty"));
 }
 
+// FIXME. Implement this.
+llvm::Function *CGObjCGNU::GetCopyStructFunction() {
+  return 0;
+}
+
 llvm::Constant *CGObjCGNU::EnumerationMutationFunction() {
   CodeGen::CodeGenTypes &Types = CGM.getTypes();
   ASTContext &Ctx = CGM.getContext();
diff --git a/lib/CodeGen/CGObjCMac.cpp b/lib/CodeGen/CGObjCMac.cpp
index be17e59d97..4713ac7ca2 100644
--- a/lib/CodeGen/CGObjCMac.cpp
+++ b/lib/CodeGen/CGObjCMac.cpp
@@ -329,6 +329,24 @@ public:
     return CGM.CreateRuntimeFunction(FTy, "objc_setProperty");
   }
 
+  
+  llvm::Constant *getCopyStructFn() {
+    CodeGen::CodeGenTypes &Types = CGM.getTypes();
+    ASTContext &Ctx = CGM.getContext();
+    // void objc_copyStruct (void *, const void *, size_t, bool, bool)
+    llvm::SmallVector<CanQualType,5> Params;
+    Params.push_back(Ctx.VoidPtrTy);
+    Params.push_back(Ctx.VoidPtrTy);
+    Params.push_back(Ctx.LongTy);
+    Params.push_back(Ctx.BoolTy);
+    Params.push_back(Ctx.BoolTy);
+    const llvm::FunctionType *FTy =
+      Types.GetFunctionType(Types.getFunctionInfo(Ctx.VoidTy, Params,
+                                                  FunctionType::ExtInfo()),
+                            false);
+    return CGM.CreateRuntimeFunction(FTy, "objc_copyStruct");
+  }
+  
   llvm::Constant *getEnumerationMutationFn() {
     CodeGen::CodeGenTypes &Types = CGM.getTypes();
     ASTContext &Ctx = CGM.getContext();
@@ -1134,6 +1152,7 @@ public:
 
   virtual llvm::Constant *GetPropertyGetFunction();
   virtual llvm::Constant *GetPropertySetFunction();
+  virtual llvm::Constant *GetCopyStructFunction();
   virtual llvm::Constant *EnumerationMutationFunction();
 
   virtual void EmitTryOrSynchronizedStmt(CodeGen::CodeGenFunction &CGF,
@@ -1366,6 +1385,11 @@ public:
   virtual llvm::Constant *GetPropertySetFunction() {
     return ObjCTypes.getSetPropertyFn();
   }
+  
+  virtual llvm::Constant *GetCopyStructFunction() {
+    return ObjCTypes.getCopyStructFn();
+  }
+  
   virtual llvm::Constant *EnumerationMutationFunction() {
     return ObjCTypes.getEnumerationMutationFn();
   }
@@ -2430,6 +2454,10 @@ llvm::Constant *CGObjCMac::GetPropertySetFunction() {
   return ObjCTypes.getSetPropertyFn();
 }
 
+llvm::Constant *CGObjCMac::GetCopyStructFunction() {
+  return ObjCTypes.getCopyStructFn();
+}
+
 llvm::Constant *CGObjCMac::EnumerationMutationFunction() {
   return ObjCTypes.getEnumerationMutationFn();
 }
diff --git a/lib/CodeGen/CGObjCRuntime.h b/lib/CodeGen/CGObjCRuntime.h
index e478394fb1..64e68083c0 100644
--- a/lib/CodeGen/CGObjCRuntime.h
+++ b/lib/CodeGen/CGObjCRuntime.h
@@ -167,6 +167,9 @@ public:
   /// Return the runtime function for setting properties.
   virtual llvm::Constant *GetPropertySetFunction() = 0;
 
+  // API for atomic copying of qualified aggregates in setter/getter.
+  virtual llvm::Constant *GetCopyStructFunction() = 0;
+  
   /// GetClass - Return a reference to the class for the given
   /// interface decl.
   virtual llvm::Value *GetClass(CGBuilderTy &Builder,
-- 
2.40.0