diff options
| -rw-r--r-- | include/llvm/Support/IRBuilder.h | 184 | ||||
| -rw-r--r-- | lib/Transforms/Scalar/GVN.cpp | 1 | ||||
| -rw-r--r-- | lib/VMCore/IRBuilder.cpp | 31 |
3 files changed, 125 insertions, 91 deletions
diff --git a/include/llvm/Support/IRBuilder.h b/include/llvm/Support/IRBuilder.h index 3abdca0cbf..92230a8183 100644 --- a/include/llvm/Support/IRBuilder.h +++ b/include/llvm/Support/IRBuilder.h @@ -17,8 +17,6 @@ #include "llvm/Constants.h" #include "llvm/Instructions.h" -#include "llvm/GlobalAlias.h" -#include "llvm/GlobalVariable.h" #include "llvm/Function.h" #include "llvm/Metadata.h" #include "llvm/LLVMContext.h" @@ -41,98 +39,49 @@ protected: I->setName(Name); } }; - - -/// IRBuilder - This provides a uniform API for creating instructions and -/// inserting them into a basic block: either at the end of a BasicBlock, or -/// at a specific iterator location in a block. -/// -/// Note that the builder does not expose the full generality of LLVM -/// instructions. For access to extra instruction properties, use the mutators -/// (e.g. setVolatile) on the instructions after they have been created. -/// The first template argument handles whether or not to preserve names in the -/// final instruction output. This defaults to on. The second template argument -/// specifies a class to use for creating constants. This defaults to creating -/// minimally folded constants. The fourth template argument allows clients to -/// specify custom insertion hooks that are called on every newly created -/// insertion. -template<bool preserveNames = true, typename T = ConstantFolder, - typename Inserter = IRBuilderDefaultInserter<preserveNames> > -class IRBuilder : public Inserter { + +/// IRBuilderBase - Common base class shared among various IRBuilders. +class IRBuilderBase { +protected: BasicBlock *BB; BasicBlock::iterator InsertPt; unsigned DbgMDKind; MDNode *CurDbgLocation; LLVMContext &Context; - T Folder; public: - IRBuilder(LLVMContext &C, const T &F, const Inserter &I = Inserter()) - : Inserter(I), DbgMDKind(0), CurDbgLocation(0), Context(C), Folder(F) { - ClearInsertionPoint(); - } - explicit IRBuilder(LLVMContext &C) - : DbgMDKind(0), CurDbgLocation(0), Context(C), Folder(C) { + IRBuilderBase(LLVMContext &context) + : DbgMDKind(0), CurDbgLocation(0), Context(context) { ClearInsertionPoint(); } - explicit IRBuilder(BasicBlock *TheBB, const T &F) - : DbgMDKind(0), CurDbgLocation(0), Context(TheBB->getContext()), Folder(F) { - SetInsertPoint(TheBB); - } - - explicit IRBuilder(BasicBlock *TheBB) - : DbgMDKind(0), CurDbgLocation(0), Context(TheBB->getContext()), - Folder(Context) { - SetInsertPoint(TheBB); - } - - IRBuilder(BasicBlock *TheBB, BasicBlock::iterator IP, const T& F) - : DbgMDKind(0), CurDbgLocation(0), Context(TheBB->getContext()), Folder(F) { - SetInsertPoint(TheBB, IP); - } - - IRBuilder(BasicBlock *TheBB, BasicBlock::iterator IP) - : DbgMDKind(0), CurDbgLocation(0), Context(TheBB->getContext()), - Folder(Context) { - SetInsertPoint(TheBB, IP); - } - - /// getFolder - Get the constant folder being used. - const T &getFolder() { return Folder; } - - /// isNamePreserving - Return true if this builder is configured to actually - /// add the requested names to IR created through it. - bool isNamePreserving() const { return preserveNames; } - //===--------------------------------------------------------------------===// // Builder configuration methods //===--------------------------------------------------------------------===// - + /// ClearInsertionPoint - Clear the insertion point: created instructions will /// not be inserted into a block. void ClearInsertionPoint() { BB = 0; } - + BasicBlock *GetInsertBlock() const { return BB; } - BasicBlock::iterator GetInsertPoint() const { return InsertPt; } - + /// SetInsertPoint - This specifies that created instructions should be /// appended to the end of the specified block. void SetInsertPoint(BasicBlock *TheBB) { BB = TheBB; InsertPt = BB->end(); } - + /// SetInsertPoint - This specifies that created instructions should be /// inserted at the specified point. void SetInsertPoint(BasicBlock *TheBB, BasicBlock::iterator IP) { BB = TheBB; InsertPt = IP; } - + /// SetCurrentDebugLocation - Set location information used by debugging /// information. void SetCurrentDebugLocation(MDNode *L) { @@ -140,35 +89,36 @@ public: DbgMDKind = Context.getMetadata().getMDKindID("dbg"); CurDbgLocation = L; } - + MDNode *getCurrentDebugLocation() const { return CurDbgLocation; } - + /// SetDebugLocation - Set location information for the given instruction. void SetDebugLocation(Instruction *I) { if (CurDbgLocation) Context.getMetadata().addMD(DbgMDKind, CurDbgLocation, I); } - + /// SetDebugLocation - Set location information for the given instruction. void SetDebugLocation(Instruction *I, MDNode *Loc) { if (DbgMDKind == 0) DbgMDKind = Context.getMetadata().getMDKindID("dbg"); Context.getMetadata().addMD(DbgMDKind, Loc, I); } - - /// Insert - Insert and return the specified instruction. - template<typename InstTy> - InstTy *Insert(InstTy *I, const Twine &Name = "") const { - this->InsertHelper(I, Name, BB, InsertPt); - if (CurDbgLocation) - Context.getMetadata().addMD(DbgMDKind, CurDbgLocation, I); - return I; - } - + + //===--------------------------------------------------------------------===// + // Miscellaneous creation methods. + //===--------------------------------------------------------------------===// + + /// CreateGlobalString - Make a new global variable with an initializer that + /// has array of i8 type filled in the the nul terminated string value + /// specified. If Name is specified, it is the name of the global variable + /// created. + Value *CreateGlobalString(const char *Str = "", const Twine &Name = ""); + //===--------------------------------------------------------------------===// // Type creation methods //===--------------------------------------------------------------------===// - + /// getInt1Ty - Fetch the type representing a single bit const Type *getInt1Ty() { return Type::getInt1Ty(Context); @@ -193,7 +143,7 @@ public: const Type *getInt64Ty() { return Type::getInt64Ty(Context); } - + /// getFloatTy - Fetch the type representing a 32-bit floating point value. const Type *getFloatTy() { return Type::getFloatTy(Context); @@ -208,6 +158,68 @@ public: const Type *getVoidTy() { return Type::getVoidTy(Context); } +}; + +/// IRBuilder - This provides a uniform API for creating instructions and +/// inserting them into a basic block: either at the end of a BasicBlock, or +/// at a specific iterator location in a block. +/// +/// Note that the builder does not expose the full generality of LLVM +/// instructions. For access to extra instruction properties, use the mutators +/// (e.g. setVolatile) on the instructions after they have been created. +/// The first template argument handles whether or not to preserve names in the +/// final instruction output. This defaults to on. The second template argument +/// specifies a class to use for creating constants. This defaults to creating +/// minimally folded constants. The fourth template argument allows clients to +/// specify custom insertion hooks that are called on every newly created +/// insertion. +template<bool preserveNames = true, typename T = ConstantFolder, + typename Inserter = IRBuilderDefaultInserter<preserveNames> > +class IRBuilder : public IRBuilderBase, public Inserter { + T Folder; +public: + IRBuilder(LLVMContext &C, const T &F, const Inserter &I = Inserter()) + : IRBuilderBase(C), Inserter(I), Folder(F) { + } + + explicit IRBuilder(LLVMContext &C) : IRBuilderBase(C), Folder(C) { + } + + explicit IRBuilder(BasicBlock *TheBB, const T &F) + : IRBuilderBase(TheBB->getContext()), Folder(F) { + SetInsertPoint(TheBB); + } + + explicit IRBuilder(BasicBlock *TheBB) + : IRBuilderBase(TheBB->getContext()), Folder(Context) { + SetInsertPoint(TheBB); + } + + IRBuilder(BasicBlock *TheBB, BasicBlock::iterator IP, const T& F) + : IRBuilderBase(TheBB->getContext()), Folder(F) { + SetInsertPoint(TheBB, IP); + } + + IRBuilder(BasicBlock *TheBB, BasicBlock::iterator IP) + : IRBuilderBase(TheBB->getContext()), Folder(Context) { + SetInsertPoint(TheBB, IP); + } + + /// getFolder - Get the constant folder being used. + const T &getFolder() { return Folder; } + + /// isNamePreserving - Return true if this builder is configured to actually + /// add the requested names to IR created through it. + bool isNamePreserving() const { return preserveNames; } + + /// Insert - Insert and return the specified instruction. + template<typename InstTy> + InstTy *Insert(InstTy *I, const Twine &Name = "") const { + this->InsertHelper(I, Name, BB, InsertPt); + if (CurDbgLocation) + Context.getMetadata().addMD(DbgMDKind, CurDbgLocation, I); + return I; + } //===--------------------------------------------------------------------===// // Instruction creation methods: Terminators @@ -646,26 +658,16 @@ public: Value *CreateStructGEP(Value *Ptr, unsigned Idx, const Twine &Name = "") { return CreateConstInBoundsGEP2_32(Ptr, 0, Idx, Name); } - Value *CreateGlobalString(const char *Str = "", const Twine &Name = "") { - Constant *StrConstant = ConstantArray::get(Context, Str, true); - Module &M = *BB->getParent()->getParent(); - GlobalVariable *gv = new GlobalVariable(M, - StrConstant->getType(), - true, - GlobalValue::InternalLinkage, - StrConstant, - "", - 0, - false); - gv->setName(Name); - return gv; - } + + /// CreateGlobalStringPtr - Same as CreateGlobalString, but return a pointer + /// with "i8*" type instead of a pointer to array of i8. Value *CreateGlobalStringPtr(const char *Str = "", const Twine &Name = "") { Value *gv = CreateGlobalString(Str, Name); Value *zero = ConstantInt::get(Type::getInt32Ty(Context), 0); Value *Args[] = { zero, zero }; return CreateInBoundsGEP(gv, Args, Args+2, Name); } + //===--------------------------------------------------------------------===// // Instruction creation methods: Cast/Conversion Operators //===--------------------------------------------------------------------===// diff --git a/lib/Transforms/Scalar/GVN.cpp b/lib/Transforms/Scalar/GVN.cpp index 249194d036..612b41587e 100644 --- a/lib/Transforms/Scalar/GVN.cpp +++ b/lib/Transforms/Scalar/GVN.cpp @@ -20,6 +20,7 @@ #include "llvm/BasicBlock.h" #include "llvm/Constants.h" #include "llvm/DerivedTypes.h" +#include "llvm/GlobalVariable.h" #include "llvm/Function.h" #include "llvm/IntrinsicInst.h" #include "llvm/LLVMContext.h" diff --git a/lib/VMCore/IRBuilder.cpp b/lib/VMCore/IRBuilder.cpp new file mode 100644 index 0000000000..850812cf66 --- /dev/null +++ b/lib/VMCore/IRBuilder.cpp @@ -0,0 +1,31 @@ +//===---- IRBuilder.cpp - Builder for LLVM Instrs -------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file implements the IRBuilder class, which is used as a convenient way +// to create LLVM instructions with a consistent and simplified interface. +// +//===----------------------------------------------------------------------===// + +#include "llvm/Support/IRBuilder.h" +#include "llvm/GlobalVariable.h" +using namespace llvm; + +/// CreateGlobalString - Make a new global variable with an initializer that +/// has array of i8 type filled in the the nul terminated string value +/// specified. If Name is specified, it is the name of the global variable +/// created. +Value *IRBuilderBase::CreateGlobalString(const char *Str, const Twine &Name) { + Constant *StrConstant = ConstantArray::get(Context, Str, true); + Module &M = *BB->getParent()->getParent(); + GlobalVariable *GV = new GlobalVariable(M, StrConstant->getType(), + true, GlobalValue::InternalLinkage, + StrConstant, "", 0, false); + GV->setName(Name); + return GV; +} |