diff options
Diffstat (limited to 'contrib/llvm/tools/clang/lib/CodeGen/CGBuilder.h')
| -rw-r--r-- | contrib/llvm/tools/clang/lib/CodeGen/CGBuilder.h | 263 |
1 files changed, 257 insertions, 6 deletions
diff --git a/contrib/llvm/tools/clang/lib/CodeGen/CGBuilder.h b/contrib/llvm/tools/clang/lib/CodeGen/CGBuilder.h index 6610659..489f341 100644 --- a/contrib/llvm/tools/clang/lib/CodeGen/CGBuilder.h +++ b/contrib/llvm/tools/clang/lib/CodeGen/CGBuilder.h @@ -11,6 +11,8 @@ #define LLVM_CLANG_LIB_CODEGEN_CGBUILDER_H #include "llvm/IR/IRBuilder.h" +#include "Address.h" +#include "CodeGenTypeCache.h" namespace clang { namespace CodeGen { @@ -22,9 +24,9 @@ class CodeGenFunction; /// instructions. template <bool PreserveNames> class CGBuilderInserter - : protected llvm::IRBuilderDefaultInserter<PreserveNames> { + : protected llvm::IRBuilderDefaultInserter<PreserveNames> { public: - CGBuilderInserter() : CGF(nullptr) {} + CGBuilderInserter() = default; explicit CGBuilderInserter(CodeGenFunction *CGF) : CGF(CGF) {} protected: @@ -33,9 +35,7 @@ protected: llvm::BasicBlock *BB, llvm::BasicBlock::iterator InsertPt) const; private: - void operator=(const CGBuilderInserter &) = delete; - - CodeGenFunction *CGF; + CodeGenFunction *CGF = nullptr; }; // Don't preserve names on values in an optimized build. @@ -44,9 +44,260 @@ private: #else #define PreserveNames true #endif + typedef CGBuilderInserter<PreserveNames> CGBuilderInserterTy; + typedef llvm::IRBuilder<PreserveNames, llvm::ConstantFolder, - CGBuilderInserterTy> CGBuilderTy; + CGBuilderInserterTy> CGBuilderBaseTy; + +class CGBuilderTy : public CGBuilderBaseTy { + /// Storing a reference to the type cache here makes it a lot easier + /// to build natural-feeling, target-specific IR. + const CodeGenTypeCache &TypeCache; +public: + CGBuilderTy(const CodeGenTypeCache &TypeCache, llvm::LLVMContext &C) + : CGBuilderBaseTy(C), TypeCache(TypeCache) {} + CGBuilderTy(const CodeGenTypeCache &TypeCache, + llvm::LLVMContext &C, const llvm::ConstantFolder &F, + const CGBuilderInserterTy &Inserter) + : CGBuilderBaseTy(C, F, Inserter), TypeCache(TypeCache) {} + CGBuilderTy(const CodeGenTypeCache &TypeCache, llvm::Instruction *I) + : CGBuilderBaseTy(I), TypeCache(TypeCache) {} + CGBuilderTy(const CodeGenTypeCache &TypeCache, llvm::BasicBlock *BB) + : CGBuilderBaseTy(BB), TypeCache(TypeCache) {} + + llvm::ConstantInt *getSize(CharUnits N) { + return llvm::ConstantInt::get(TypeCache.SizeTy, N.getQuantity()); + } + llvm::ConstantInt *getSize(uint64_t N) { + return llvm::ConstantInt::get(TypeCache.SizeTy, N); + } + + // Note that we intentionally hide the CreateLoad APIs that don't + // take an alignment. + llvm::LoadInst *CreateLoad(Address Addr, const llvm::Twine &Name = "") { + return CreateAlignedLoad(Addr.getPointer(), + Addr.getAlignment().getQuantity(), + Name); + } + llvm::LoadInst *CreateLoad(Address Addr, const char *Name) { + // This overload is required to prevent string literals from + // ending up in the IsVolatile overload. + return CreateAlignedLoad(Addr.getPointer(), + Addr.getAlignment().getQuantity(), + Name); + } + llvm::LoadInst *CreateLoad(Address Addr, bool IsVolatile, + const llvm::Twine &Name = "") { + return CreateAlignedLoad(Addr.getPointer(), + Addr.getAlignment().getQuantity(), + IsVolatile, + Name); + } + + using CGBuilderBaseTy::CreateAlignedLoad; + llvm::LoadInst *CreateAlignedLoad(llvm::Value *Addr, CharUnits Align, + const llvm::Twine &Name = "") { + return CreateAlignedLoad(Addr, Align.getQuantity(), Name); + } + llvm::LoadInst *CreateAlignedLoad(llvm::Value *Addr, CharUnits Align, + const char *Name) { + return CreateAlignedLoad(Addr, Align.getQuantity(), Name); + } + llvm::LoadInst *CreateAlignedLoad(llvm::Type *Ty, llvm::Value *Addr, + CharUnits Align, + const llvm::Twine &Name = "") { + assert(Addr->getType()->getPointerElementType() == Ty); + return CreateAlignedLoad(Addr, Align.getQuantity(), Name); + } + llvm::LoadInst *CreateAlignedLoad(llvm::Value *Addr, CharUnits Align, + bool IsVolatile, + const llvm::Twine &Name = "") { + return CreateAlignedLoad(Addr, Align.getQuantity(), IsVolatile, Name); + } + + // Note that we intentionally hide the CreateStore APIs that don't + // take an alignment. + llvm::StoreInst *CreateStore(llvm::Value *Val, Address Addr, + bool IsVolatile = false) { + return CreateAlignedStore(Val, Addr.getPointer(), + Addr.getAlignment().getQuantity(), IsVolatile); + } + + using CGBuilderBaseTy::CreateAlignedStore; + llvm::StoreInst *CreateAlignedStore(llvm::Value *Val, llvm::Value *Addr, + CharUnits Align, bool IsVolatile = false) { + return CreateAlignedStore(Val, Addr, Align.getQuantity(), IsVolatile); + } + + // FIXME: these "default-aligned" APIs should be removed, + // but I don't feel like fixing all the builtin code right now. + llvm::LoadInst *CreateDefaultAlignedLoad(llvm::Value *Addr, + const llvm::Twine &Name = "") { + return CGBuilderBaseTy::CreateLoad(Addr, false, Name); + } + llvm::LoadInst *CreateDefaultAlignedLoad(llvm::Value *Addr, + const char *Name) { + return CGBuilderBaseTy::CreateLoad(Addr, false, Name); + } + llvm::LoadInst *CreateDefaultAlignedLoad(llvm::Value *Addr, bool IsVolatile, + const llvm::Twine &Name = "") { + return CGBuilderBaseTy::CreateLoad(Addr, IsVolatile, Name); + } + + llvm::StoreInst *CreateDefaultAlignedStore(llvm::Value *Val, + llvm::Value *Addr, + bool IsVolatile = false) { + return CGBuilderBaseTy::CreateStore(Val, Addr, IsVolatile); + } + + /// Emit a load from an i1 flag variable. + llvm::LoadInst *CreateFlagLoad(llvm::Value *Addr, + const llvm::Twine &Name = "") { + assert(Addr->getType()->getPointerElementType() == getInt1Ty()); + return CreateAlignedLoad(getInt1Ty(), Addr, CharUnits::One(), Name); + } + + /// Emit a store to an i1 flag variable. + llvm::StoreInst *CreateFlagStore(bool Value, llvm::Value *Addr) { + assert(Addr->getType()->getPointerElementType() == getInt1Ty()); + return CreateAlignedStore(getInt1(Value), Addr, CharUnits::One()); + } + + using CGBuilderBaseTy::CreateBitCast; + Address CreateBitCast(Address Addr, llvm::Type *Ty, + const llvm::Twine &Name = "") { + return Address(CreateBitCast(Addr.getPointer(), Ty, Name), + Addr.getAlignment()); + } + + /// Cast the element type of the given address to a different type, + /// preserving information like the alignment and address space. + Address CreateElementBitCast(Address Addr, llvm::Type *Ty, + const llvm::Twine &Name = "") { + auto PtrTy = Ty->getPointerTo(Addr.getAddressSpace()); + return CreateBitCast(Addr, PtrTy, Name); + } + + using CGBuilderBaseTy::CreatePointerBitCastOrAddrSpaceCast; + Address CreatePointerBitCastOrAddrSpaceCast(Address Addr, llvm::Type *Ty, + const llvm::Twine &Name = "") { + llvm::Value *Ptr = + CreatePointerBitCastOrAddrSpaceCast(Addr.getPointer(), Ty, Name); + return Address(Ptr, Addr.getAlignment()); + } + + using CGBuilderBaseTy::CreateStructGEP; + Address CreateStructGEP(Address Addr, unsigned Index, CharUnits Offset, + const llvm::Twine &Name = "") { + return Address(CreateStructGEP(Addr.getElementType(), + Addr.getPointer(), Index, Name), + Addr.getAlignment().alignmentAtOffset(Offset)); + } + + /// Given + /// %addr = [n x T]* ... + /// produce + /// %name = getelementptr inbounds %addr, i64 0, i64 index + /// where i64 is actually the target word size. + /// + /// This API assumes that drilling into an array like this is always + /// an inbounds operation. + /// + /// \param EltSize - the size of the type T in bytes + Address CreateConstArrayGEP(Address Addr, uint64_t Index, CharUnits EltSize, + const llvm::Twine &Name = "") { + return Address(CreateInBoundsGEP(Addr.getPointer(), + {getSize(CharUnits::Zero()), + getSize(Index)}, + Name), + Addr.getAlignment().alignmentAtOffset(Index * EltSize)); + } + + /// Given + /// %addr = T* ... + /// produce + /// %name = getelementptr inbounds %addr, i64 index + /// where i64 is actually the target word size. + /// + /// \param EltSize - the size of the type T in bytes + Address CreateConstInBoundsGEP(Address Addr, uint64_t Index, + CharUnits EltSize, + const llvm::Twine &Name = "") { + return Address(CreateInBoundsGEP(Addr.getElementType(), Addr.getPointer(), + getSize(Index), Name), + Addr.getAlignment().alignmentAtOffset(Index * EltSize)); + } + + /// Given + /// %addr = T* ... + /// produce + /// %name = getelementptr inbounds %addr, i64 index + /// where i64 is actually the target word size. + /// + /// \param EltSize - the size of the type T in bytes + Address CreateConstGEP(Address Addr, uint64_t Index, CharUnits EltSize, + const llvm::Twine &Name = "") { + return Address(CreateGEP(Addr.getElementType(), Addr.getPointer(), + getSize(Index), Name), + Addr.getAlignment().alignmentAtOffset(Index * EltSize)); + } + + /// Given a pointer to i8, adjust it by a given constant offset. + Address CreateConstInBoundsByteGEP(Address Addr, CharUnits Offset, + const llvm::Twine &Name = "") { + assert(Addr.getElementType() == TypeCache.Int8Ty); + return Address(CreateInBoundsGEP(Addr.getPointer(), getSize(Offset), Name), + Addr.getAlignment().alignmentAtOffset(Offset)); + } + Address CreateConstByteGEP(Address Addr, CharUnits Offset, + const llvm::Twine &Name = "") { + assert(Addr.getElementType() == TypeCache.Int8Ty); + return Address(CreateGEP(Addr.getPointer(), getSize(Offset), Name), + Addr.getAlignment().alignmentAtOffset(Offset)); + } + + llvm::Value *CreateConstInBoundsByteGEP(llvm::Value *Ptr, CharUnits Offset, + const llvm::Twine &Name = "") { + assert(Ptr->getType()->getPointerElementType() == TypeCache.Int8Ty); + return CreateInBoundsGEP(Ptr, getSize(Offset), Name); + } + llvm::Value *CreateConstByteGEP(llvm::Value *Ptr, CharUnits Offset, + const llvm::Twine &Name = "") { + assert(Ptr->getType()->getPointerElementType() == TypeCache.Int8Ty); + return CreateGEP(Ptr, getSize(Offset), Name); + } + + using CGBuilderBaseTy::CreateMemCpy; + llvm::CallInst *CreateMemCpy(Address Dest, Address Src, llvm::Value *Size, + bool IsVolatile = false) { + auto Align = std::min(Dest.getAlignment(), Src.getAlignment()); + return CreateMemCpy(Dest.getPointer(), Src.getPointer(), Size, + Align.getQuantity(), IsVolatile); + } + llvm::CallInst *CreateMemCpy(Address Dest, Address Src, uint64_t Size, + bool IsVolatile = false) { + auto Align = std::min(Dest.getAlignment(), Src.getAlignment()); + return CreateMemCpy(Dest.getPointer(), Src.getPointer(), Size, + Align.getQuantity(), IsVolatile); + } + + using CGBuilderBaseTy::CreateMemMove; + llvm::CallInst *CreateMemMove(Address Dest, Address Src, llvm::Value *Size, + bool IsVolatile = false) { + auto Align = std::min(Dest.getAlignment(), Src.getAlignment()); + return CreateMemMove(Dest.getPointer(), Src.getPointer(), Size, + Align.getQuantity(), IsVolatile); + } + + using CGBuilderBaseTy::CreateMemSet; + llvm::CallInst *CreateMemSet(Address Dest, llvm::Value *Value, + llvm::Value *Size, bool IsVolatile = false) { + return CreateMemSet(Dest.getPointer(), Value, Size, + Dest.getAlignment().getQuantity(), IsVolatile); + } +}; + #undef PreserveNames } // end namespace CodeGen |
