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-rw-r--r--lib/CodeGen/CGCXXClass.cpp239
1 files changed, 0 insertions, 239 deletions
diff --git a/lib/CodeGen/CGCXXClass.cpp b/lib/CodeGen/CGCXXClass.cpp
deleted file mode 100644
index e122b95a73..0000000000
--- a/lib/CodeGen/CGCXXClass.cpp
+++ /dev/null
@@ -1,239 +0,0 @@
-//===--- CGCXXClass.cpp - Emit LLVM Code for C++ classes ------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This contains code dealing with C++ code generation of classes
-//
-//===----------------------------------------------------------------------===//
-
-#include "CodeGenFunction.h"
-#include "clang/AST/CXXInheritance.h"
-#include "clang/AST/RecordLayout.h"
-
-using namespace clang;
-using namespace CodeGen;
-
-static uint64_t
-ComputeNonVirtualBaseClassOffset(ASTContext &Context, CXXBasePaths &Paths,
- unsigned Start) {
- uint64_t Offset = 0;
-
- const CXXBasePath &Path = Paths.front();
- for (unsigned i = Start, e = Path.size(); i != e; ++i) {
- const CXXBasePathElement& Element = Path[i];
-
- // Get the layout.
- const ASTRecordLayout &Layout = Context.getASTRecordLayout(Element.Class);
-
- const CXXBaseSpecifier *BS = Element.Base;
- // FIXME: enable test3 from virt.cc to not abort.
- if (BS->isVirtual())
- return 0;
- assert(!BS->isVirtual() && "Should not see virtual bases here!");
-
- const CXXRecordDecl *Base =
- cast<CXXRecordDecl>(BS->getType()->getAs<RecordType>()->getDecl());
-
- // Add the offset.
- Offset += Layout.getBaseClassOffset(Base) / 8;
- }
-
- return Offset;
-}
-
-llvm::Constant *
-CodeGenModule::GetCXXBaseClassOffset(const CXXRecordDecl *ClassDecl,
- const CXXRecordDecl *BaseClassDecl) {
- if (ClassDecl == BaseClassDecl)
- return 0;
-
- CXXBasePaths Paths(/*FindAmbiguities=*/false,
- /*RecordPaths=*/true, /*DetectVirtual=*/false);
- if (!const_cast<CXXRecordDecl *>(ClassDecl)->
- isDerivedFrom(const_cast<CXXRecordDecl *>(BaseClassDecl), Paths)) {
- assert(false && "Class must be derived from the passed in base class!");
- return 0;
- }
-
- uint64_t Offset = ComputeNonVirtualBaseClassOffset(getContext(), Paths, 0);
- if (!Offset)
- return 0;
-
- const llvm::Type *PtrDiffTy =
- Types.ConvertType(getContext().getPointerDiffType());
-
- return llvm::ConstantInt::get(PtrDiffTy, Offset);
-}
-
-static llvm::Value *GetCXXBaseClassOffset(CodeGenFunction &CGF,
- llvm::Value *BaseValue,
- const CXXRecordDecl *ClassDecl,
- const CXXRecordDecl *BaseClassDecl) {
- CXXBasePaths Paths(/*FindAmbiguities=*/false,
- /*RecordPaths=*/true, /*DetectVirtual=*/true);
- if (!const_cast<CXXRecordDecl *>(ClassDecl)->
- isDerivedFrom(const_cast<CXXRecordDecl *>(BaseClassDecl), Paths)) {
- assert(false && "Class must be derived from the passed in base class!");
- return 0;
- }
-
- unsigned Start = 0;
- llvm::Value *VirtualOffset = 0;
- if (const RecordType *RT = Paths.getDetectedVirtual()) {
- const CXXRecordDecl *VBase = cast<CXXRecordDecl>(RT->getDecl());
-
- VirtualOffset =
- CGF.GetVirtualCXXBaseClassOffset(BaseValue, ClassDecl, VBase);
-
- const CXXBasePath &Path = Paths.front();
- unsigned e = Path.size();
- for (Start = 0; Start != e; ++Start) {
- const CXXBasePathElement& Element = Path[Start];
-
- if (Element.Class == VBase)
- break;
- }
- }
-
- uint64_t Offset =
- ComputeNonVirtualBaseClassOffset(CGF.getContext(), Paths, Start);
-
- if (!Offset)
- return VirtualOffset;
-
- const llvm::Type *PtrDiffTy =
- CGF.ConvertType(CGF.getContext().getPointerDiffType());
- llvm::Value *NonVirtualOffset = llvm::ConstantInt::get(PtrDiffTy, Offset);
-
- if (VirtualOffset)
- return CGF.Builder.CreateAdd(VirtualOffset, NonVirtualOffset);
-
- return NonVirtualOffset;
-}
-
-llvm::Value *
-CodeGenFunction::GetAddressOfBaseClass(llvm::Value *Value,
- const CXXRecordDecl *ClassDecl,
- const CXXRecordDecl *BaseClassDecl,
- bool NullCheckValue) {
- QualType BTy =
- getContext().getCanonicalType(
- getContext().getTypeDeclType(const_cast<CXXRecordDecl*>(BaseClassDecl)));
- const llvm::Type *BasePtrTy = llvm::PointerType::getUnqual(ConvertType(BTy));
-
- if (ClassDecl == BaseClassDecl) {
- // Just cast back.
- return Builder.CreateBitCast(Value, BasePtrTy);
- }
-
- llvm::BasicBlock *CastNull = 0;
- llvm::BasicBlock *CastNotNull = 0;
- llvm::BasicBlock *CastEnd = 0;
-
- if (NullCheckValue) {
- CastNull = createBasicBlock("cast.null");
- CastNotNull = createBasicBlock("cast.notnull");
- CastEnd = createBasicBlock("cast.end");
-
- llvm::Value *IsNull =
- Builder.CreateICmpEQ(Value,
- llvm::Constant::getNullValue(Value->getType()));
- Builder.CreateCondBr(IsNull, CastNull, CastNotNull);
- EmitBlock(CastNotNull);
- }
-
- const llvm::Type *Int8PtrTy = llvm::Type::getInt8PtrTy(VMContext);
-
- llvm::Value *Offset =
- GetCXXBaseClassOffset(*this, Value, ClassDecl, BaseClassDecl);
-
- if (Offset) {
- // Apply the offset.
- Value = Builder.CreateBitCast(Value, Int8PtrTy);
- Value = Builder.CreateGEP(Value, Offset, "add.ptr");
- }
-
- // Cast back.
- Value = Builder.CreateBitCast(Value, BasePtrTy);
-
- if (NullCheckValue) {
- Builder.CreateBr(CastEnd);
- EmitBlock(CastNull);
- Builder.CreateBr(CastEnd);
- EmitBlock(CastEnd);
-
- llvm::PHINode *PHI = Builder.CreatePHI(Value->getType());
- PHI->reserveOperandSpace(2);
- PHI->addIncoming(Value, CastNotNull);
- PHI->addIncoming(llvm::Constant::getNullValue(Value->getType()),
- CastNull);
- Value = PHI;
- }
-
- return Value;
-}
-
-llvm::Value *
-CodeGenFunction::GetAddressOfDerivedClass(llvm::Value *Value,
- const CXXRecordDecl *ClassDecl,
- const CXXRecordDecl *DerivedClassDecl,
- bool NullCheckValue) {
- QualType DerivedTy =
- getContext().getCanonicalType(
- getContext().getTypeDeclType(const_cast<CXXRecordDecl*>(DerivedClassDecl)));
- const llvm::Type *DerivedPtrTy = ConvertType(DerivedTy)->getPointerTo();
-
- if (ClassDecl == DerivedClassDecl) {
- // Just cast back.
- return Builder.CreateBitCast(Value, DerivedPtrTy);
- }
-
- llvm::BasicBlock *CastNull = 0;
- llvm::BasicBlock *CastNotNull = 0;
- llvm::BasicBlock *CastEnd = 0;
-
- if (NullCheckValue) {
- CastNull = createBasicBlock("cast.null");
- CastNotNull = createBasicBlock("cast.notnull");
- CastEnd = createBasicBlock("cast.end");
-
- llvm::Value *IsNull =
- Builder.CreateICmpEQ(Value,
- llvm::Constant::getNullValue(Value->getType()));
- Builder.CreateCondBr(IsNull, CastNull, CastNotNull);
- EmitBlock(CastNotNull);
- }
-
- llvm::Value *Offset = GetCXXBaseClassOffset(*this, Value, DerivedClassDecl,
- ClassDecl);
- if (Offset) {
- // Apply the offset.
- Value = Builder.CreatePtrToInt(Value, Offset->getType());
- Value = Builder.CreateSub(Value, Offset);
- Value = Builder.CreateIntToPtr(Value, DerivedPtrTy);
- } else {
- // Just cast.
- Value = Builder.CreateBitCast(Value, DerivedPtrTy);
- }
-
- if (NullCheckValue) {
- Builder.CreateBr(CastEnd);
- EmitBlock(CastNull);
- Builder.CreateBr(CastEnd);
- EmitBlock(CastEnd);
-
- llvm::PHINode *PHI = Builder.CreatePHI(Value->getType());
- PHI->reserveOperandSpace(2);
- PHI->addIncoming(Value, CastNotNull);
- PHI->addIncoming(llvm::Constant::getNullValue(Value->getType()),
- CastNull);
- Value = PHI;
- }
-
- return Value;
-}
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