Move CGCXXABI functions to CGCXXABI.cpp

llvm-svn: 120250

1 files changed, 155 insertions, 0 deletions

diff --git a/clang/lib/CodeGen/CGCXXABI.cpp b/clang/lib/CodeGen/CGCXXABI.cpp
index aeba1470988..21fb732afcf 100644
--- a/clang/lib/CodeGen/CGCXXABI.cpp
+++ b/clang/lib/CodeGen/CGCXXABI.cpp
@@ -15,4 +15,159 @@
 #include "CGCXXABI.h"
 
 using namespace clang;
+using namespace CodeGen;
 
+void CGCXXABI::_anchor() {}
+
+static void ErrorUnsupportedABI(CodeGenFunction &CGF,
+                                llvm::StringRef S) {
+  Diagnostic &Diags = CGF.CGM.getDiags();
+  unsigned DiagID = Diags.getCustomDiagID(Diagnostic::Error,
+                                          "cannot yet compile %1 in this ABI");
+  Diags.Report(CGF.getContext().getFullLoc(CGF.CurCodeDecl->getLocation()),
+               DiagID)
+    << S;
+}
+
+static llvm::Constant *GetBogusMemberPointer(CodeGenModule &CGM,
+                                             QualType T) {
+  return llvm::Constant::getNullValue(CGM.getTypes().ConvertType(T));
+}
+
+const llvm::Type *
+CGCXXABI::ConvertMemberPointerType(const MemberPointerType *MPT) {
+  return CGM.getTypes().ConvertType(CGM.getContext().getPointerDiffType());
+}
+
+llvm::Value *CGCXXABI::EmitLoadOfMemberFunctionPointer(CodeGenFunction &CGF,
+                                                       llvm::Value *&This,
+                                                       llvm::Value *MemPtr,
+                                                 const MemberPointerType *MPT) {
+  ErrorUnsupportedABI(CGF, "calls through member pointers");
+
+  const FunctionProtoType *FPT = 
+    MPT->getPointeeType()->getAs<FunctionProtoType>();
+  const CXXRecordDecl *RD = 
+    cast<CXXRecordDecl>(MPT->getClass()->getAs<RecordType>()->getDecl());
+  const llvm::FunctionType *FTy = 
+    CGM.getTypes().GetFunctionType(CGM.getTypes().getFunctionInfo(RD, FPT),
+                                   FPT->isVariadic());
+  return llvm::Constant::getNullValue(FTy->getPointerTo());
+}
+
+llvm::Value *CGCXXABI::EmitMemberDataPointerAddress(CodeGenFunction &CGF,
+                                                    llvm::Value *Base,
+                                                    llvm::Value *MemPtr,
+                                              const MemberPointerType *MPT) {
+  ErrorUnsupportedABI(CGF, "loads of member pointers");
+  const llvm::Type *Ty = CGF.ConvertType(MPT->getPointeeType())->getPointerTo();
+  return llvm::Constant::getNullValue(Ty);
+}
+
+llvm::Value *CGCXXABI::EmitMemberPointerConversion(CodeGenFunction &CGF,
+                                                   const CastExpr *E,
+                                                   llvm::Value *Src) {
+  ErrorUnsupportedABI(CGF, "member function pointer conversions");
+  return GetBogusMemberPointer(CGM, E->getType());
+}
+
+llvm::Value *
+CGCXXABI::EmitMemberPointerComparison(CodeGenFunction &CGF,
+                                      llvm::Value *L,
+                                      llvm::Value *R,
+                                      const MemberPointerType *MPT,
+                                      bool Inequality) {
+  ErrorUnsupportedABI(CGF, "member function pointer comparison");
+  return CGF.Builder.getFalse();
+}
+
+llvm::Value *
+CGCXXABI::EmitMemberPointerIsNotNull(CodeGenFunction &CGF,
+                                     llvm::Value *MemPtr,
+                                     const MemberPointerType *MPT) {
+  ErrorUnsupportedABI(CGF, "member function pointer null testing");
+  return CGF.Builder.getFalse();
+}
+
+llvm::Constant *
+CGCXXABI::EmitMemberPointerConversion(llvm::Constant *C, const CastExpr *E) {
+  return GetBogusMemberPointer(CGM, E->getType());
+}
+
+llvm::Constant *
+CGCXXABI::EmitNullMemberPointer(const MemberPointerType *MPT) {
+  return GetBogusMemberPointer(CGM, QualType(MPT, 0));
+}
+
+llvm::Constant *CGCXXABI::EmitMemberPointer(const CXXMethodDecl *MD) {
+  return GetBogusMemberPointer(CGM,
+                         CGM.getContext().getMemberPointerType(MD->getType(),
+                                         MD->getParent()->getTypeForDecl()));
+}
+
+llvm::Constant *CGCXXABI::EmitMemberPointer(const FieldDecl *FD) {
+  return GetBogusMemberPointer(CGM,
+                         CGM.getContext().getMemberPointerType(FD->getType(),
+                                         FD->getParent()->getTypeForDecl()));
+}
+
+bool CGCXXABI::isZeroInitializable(const MemberPointerType *MPT) {
+  // Fake answer.
+  return true;
+}
+
+void CGCXXABI::BuildThisParam(CodeGenFunction &CGF, FunctionArgList &Params) {
+  const CXXMethodDecl *MD = cast<CXXMethodDecl>(CGF.CurGD.getDecl());
+
+  // FIXME: I'm not entirely sure I like using a fake decl just for code
+  // generation. Maybe we can come up with a better way?
+  ImplicitParamDecl *ThisDecl
+    = ImplicitParamDecl::Create(CGM.getContext(), 0, MD->getLocation(),
+                                &CGM.getContext().Idents.get("this"),
+                                MD->getThisType(CGM.getContext()));
+  Params.push_back(std::make_pair(ThisDecl, ThisDecl->getType()));
+  getThisDecl(CGF) = ThisDecl;
+}
+
+void CGCXXABI::EmitThisParam(CodeGenFunction &CGF) {
+  /// Initialize the 'this' slot.
+  assert(getThisDecl(CGF) && "no 'this' variable for function");
+  getThisValue(CGF)
+    = CGF.Builder.CreateLoad(CGF.GetAddrOfLocalVar(getThisDecl(CGF)),
+                             "this");
+}
+
+void CGCXXABI::EmitReturnFromThunk(CodeGenFunction &CGF,
+                                   RValue RV, QualType ResultType) {
+  CGF.EmitReturnOfRValue(RV, ResultType);
+}
+
+CharUnits CGCXXABI::GetArrayCookieSize(QualType ElementType) {
+  return CharUnits::Zero();
+}
+
+llvm::Value *CGCXXABI::InitializeArrayCookie(CodeGenFunction &CGF,
+                                             llvm::Value *NewPtr,
+                                             llvm::Value *NumElements,
+                                             QualType ElementType) {
+  // Should never be called.
+  ErrorUnsupportedABI(CGF, "array cookie initialization");
+  return 0;
+}
+
+void CGCXXABI::ReadArrayCookie(CodeGenFunction &CGF, llvm::Value *Ptr,
+                               QualType ElementType, llvm::Value *&NumElements,
+                               llvm::Value *&AllocPtr, CharUnits &CookieSize) {
+  ErrorUnsupportedABI(CGF, "array cookie reading");
+
+  // This should be enough to avoid assertions.
+  NumElements = 0;
+  AllocPtr = llvm::Constant::getNullValue(CGF.Builder.getInt8PtrTy());
+  CookieSize = CharUnits::Zero();
+}
+
+void CGCXXABI::EmitGuardedInit(CodeGenFunction &CGF,
+                               const VarDecl &D,
+                               llvm::GlobalVariable *GV) {
+  ErrorUnsupportedABI(CGF, "static local variable initialization");
+}