mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-10-31 09:11:13 +00:00
4ad02e726d
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5786 91177308-0d34-0410-b5e6-96231b3b80d8
953 lines
31 KiB
C++
953 lines
31 KiB
C++
//===-- AsmWriter.cpp - Printing LLVM as an assembly file -----------------===//
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//
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// This library implements the functionality defined in llvm/Assembly/Writer.h
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//
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// Note that these routines must be extremely tolerant of various errors in the
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// LLVM code, because of of the primary uses of it is for debugging
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// transformations.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Assembly/CachedWriter.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/Assembly/PrintModulePass.h"
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#include "llvm/SlotCalculator.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Instruction.h"
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#include "llvm/Module.h"
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#include "llvm/Constants.h"
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#include "llvm/iMemory.h"
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#include "llvm/iTerminators.h"
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#include "llvm/iPHINode.h"
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#include "llvm/iOther.h"
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#include "llvm/SymbolTable.h"
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#include "llvm/Support/CFG.h"
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#include "Support/StringExtras.h"
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#include "Support/STLExtras.h"
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#include <algorithm>
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using std::string;
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using std::map;
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using std::vector;
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using std::ostream;
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static RegisterPass<PrintModulePass>
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X("printm", "Print module to stderr",PassInfo::Analysis|PassInfo::Optimization);
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static RegisterPass<PrintFunctionPass>
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Y("print","Print function to stderr",PassInfo::Analysis|PassInfo::Optimization);
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static void WriteAsOperandInternal(ostream &Out, const Value *V, bool PrintName,
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map<const Type *, string> &TypeTable,
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SlotCalculator *Table);
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static const Module *getModuleFromVal(const Value *V) {
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if (const Argument *MA = dyn_cast<const Argument>(V))
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return MA->getParent() ? MA->getParent()->getParent() : 0;
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else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(V))
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return BB->getParent() ? BB->getParent()->getParent() : 0;
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else if (const Instruction *I = dyn_cast<const Instruction>(V)) {
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const Function *M = I->getParent() ? I->getParent()->getParent() : 0;
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return M ? M->getParent() : 0;
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} else if (const GlobalValue *GV = dyn_cast<const GlobalValue>(V))
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return GV->getParent();
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return 0;
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}
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static SlotCalculator *createSlotCalculator(const Value *V) {
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assert(!isa<Type>(V) && "Can't create an SC for a type!");
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if (const Argument *FA = dyn_cast<const Argument>(V)) {
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return new SlotCalculator(FA->getParent(), true);
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} else if (const Instruction *I = dyn_cast<const Instruction>(V)) {
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return new SlotCalculator(I->getParent()->getParent(), true);
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} else if (const BasicBlock *BB = dyn_cast<const BasicBlock>(V)) {
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return new SlotCalculator(BB->getParent(), true);
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} else if (const GlobalVariable *GV = dyn_cast<const GlobalVariable>(V)){
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return new SlotCalculator(GV->getParent(), true);
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} else if (const Function *Func = dyn_cast<const Function>(V)) {
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return new SlotCalculator(Func, true);
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}
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return 0;
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}
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// If the module has a symbol table, take all global types and stuff their
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// names into the TypeNames map.
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//
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static void fillTypeNameTable(const Module *M,
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map<const Type *, string> &TypeNames) {
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if (!M) return;
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const SymbolTable &ST = M->getSymbolTable();
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SymbolTable::const_iterator PI = ST.find(Type::TypeTy);
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if (PI != ST.end()) {
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SymbolTable::type_const_iterator I = PI->second.begin();
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for (; I != PI->second.end(); ++I) {
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// As a heuristic, don't insert pointer to primitive types, because
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// they are used too often to have a single useful name.
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//
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const Type *Ty = cast<const Type>(I->second);
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if (!isa<PointerType>(Ty) ||
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!cast<PointerType>(Ty)->getElementType()->isPrimitiveType())
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TypeNames.insert(std::make_pair(Ty, "%"+I->first));
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}
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}
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}
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static string calcTypeName(const Type *Ty, vector<const Type *> &TypeStack,
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map<const Type *, string> &TypeNames) {
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if (Ty->isPrimitiveType()) return Ty->getDescription(); // Base case
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// Check to see if the type is named.
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map<const Type *, string>::iterator I = TypeNames.find(Ty);
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if (I != TypeNames.end()) return I->second;
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// Check to see if the Type is already on the stack...
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unsigned Slot = 0, CurSize = TypeStack.size();
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while (Slot < CurSize && TypeStack[Slot] != Ty) ++Slot; // Scan for type
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// This is another base case for the recursion. In this case, we know
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// that we have looped back to a type that we have previously visited.
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// Generate the appropriate upreference to handle this.
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//
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if (Slot < CurSize)
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return "\\" + utostr(CurSize-Slot); // Here's the upreference
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TypeStack.push_back(Ty); // Recursive case: Add us to the stack..
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string Result;
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switch (Ty->getPrimitiveID()) {
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case Type::FunctionTyID: {
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const FunctionType *FTy = cast<const FunctionType>(Ty);
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Result = calcTypeName(FTy->getReturnType(), TypeStack, TypeNames) + " (";
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for (FunctionType::ParamTypes::const_iterator
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I = FTy->getParamTypes().begin(),
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E = FTy->getParamTypes().end(); I != E; ++I) {
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if (I != FTy->getParamTypes().begin())
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Result += ", ";
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Result += calcTypeName(*I, TypeStack, TypeNames);
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}
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if (FTy->isVarArg()) {
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if (!FTy->getParamTypes().empty()) Result += ", ";
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Result += "...";
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}
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Result += ")";
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break;
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}
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case Type::StructTyID: {
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const StructType *STy = cast<const StructType>(Ty);
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Result = "{ ";
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for (StructType::ElementTypes::const_iterator
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I = STy->getElementTypes().begin(),
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E = STy->getElementTypes().end(); I != E; ++I) {
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if (I != STy->getElementTypes().begin())
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Result += ", ";
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Result += calcTypeName(*I, TypeStack, TypeNames);
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}
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Result += " }";
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break;
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}
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case Type::PointerTyID:
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Result = calcTypeName(cast<const PointerType>(Ty)->getElementType(),
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TypeStack, TypeNames) + "*";
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break;
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case Type::ArrayTyID: {
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const ArrayType *ATy = cast<const ArrayType>(Ty);
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Result = "[" + utostr(ATy->getNumElements()) + " x ";
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Result += calcTypeName(ATy->getElementType(), TypeStack, TypeNames) + "]";
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break;
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}
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default:
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Result = "<unrecognized-type>";
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}
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TypeStack.pop_back(); // Remove self from stack...
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return Result;
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}
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// printTypeInt - The internal guts of printing out a type that has a
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// potentially named portion.
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//
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static ostream &printTypeInt(ostream &Out, const Type *Ty,
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map<const Type *, string> &TypeNames) {
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// Primitive types always print out their description, regardless of whether
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// they have been named or not.
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//
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if (Ty->isPrimitiveType()) return Out << Ty->getDescription();
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// Check to see if the type is named.
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map<const Type *, string>::iterator I = TypeNames.find(Ty);
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if (I != TypeNames.end()) return Out << I->second;
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// Otherwise we have a type that has not been named but is a derived type.
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// Carefully recurse the type hierarchy to print out any contained symbolic
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// names.
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//
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vector<const Type *> TypeStack;
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string TypeName = calcTypeName(Ty, TypeStack, TypeNames);
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TypeNames.insert(std::make_pair(Ty, TypeName));//Cache type name for later use
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return Out << TypeName;
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}
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// WriteTypeSymbolic - This attempts to write the specified type as a symbolic
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// type, iff there is an entry in the modules symbol table for the specified
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// type or one of it's component types. This is slower than a simple x << Type;
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//
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ostream &WriteTypeSymbolic(ostream &Out, const Type *Ty, const Module *M) {
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Out << " ";
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// If they want us to print out a type, attempt to make it symbolic if there
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// is a symbol table in the module...
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if (M) {
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map<const Type *, string> TypeNames;
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fillTypeNameTable(M, TypeNames);
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return printTypeInt(Out, Ty, TypeNames);
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} else {
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return Out << Ty->getDescription();
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}
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}
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static void WriteConstantInt(ostream &Out, const Constant *CV, bool PrintName,
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map<const Type *, string> &TypeTable,
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SlotCalculator *Table) {
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if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
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Out << (CB == ConstantBool::True ? "true" : "false");
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} else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV)) {
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Out << CI->getValue();
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} else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV)) {
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Out << CI->getValue();
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} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
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// We would like to output the FP constant value in exponential notation,
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// but we cannot do this if doing so will lose precision. Check here to
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// make sure that we only output it in exponential format if we can parse
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// the value back and get the same value.
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//
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std::string StrVal = ftostr(CFP->getValue());
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// Check to make sure that the stringized number is not some string like
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// "Inf" or NaN, that atof will accept, but the lexer will not. Check that
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// the string matches the "[-+]?[0-9]" regex.
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//
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if ((StrVal[0] >= '0' && StrVal[0] <= '9') ||
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((StrVal[0] == '-' || StrVal[0] == '+') &&
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(StrVal[0] >= '0' && StrVal[0] <= '9')))
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// Reparse stringized version!
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if (atof(StrVal.c_str()) == CFP->getValue()) {
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Out << StrVal; return;
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}
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// Otherwise we could not reparse it to exactly the same value, so we must
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// output the string in hexadecimal format!
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//
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// Behave nicely in the face of C TBAA rules... see:
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// http://www.nullstone.com/htmls/category/aliastyp.htm
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//
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double Val = CFP->getValue();
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char *Ptr = (char*)&Val;
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assert(sizeof(double) == sizeof(uint64_t) && sizeof(double) == 8 &&
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"assuming that double is 64 bits!");
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Out << "0x" << utohexstr(*(uint64_t*)Ptr);
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} else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
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// As a special case, print the array as a string if it is an array of
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// ubytes or an array of sbytes with positive values.
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//
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const Type *ETy = CA->getType()->getElementType();
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bool isString = (ETy == Type::SByteTy || ETy == Type::UByteTy);
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if (ETy == Type::SByteTy)
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for (unsigned i = 0; i < CA->getNumOperands(); ++i)
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if (cast<ConstantSInt>(CA->getOperand(i))->getValue() < 0) {
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isString = false;
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break;
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}
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if (isString) {
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Out << "c\"";
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for (unsigned i = 0; i < CA->getNumOperands(); ++i) {
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unsigned char C = (ETy == Type::SByteTy) ?
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(unsigned char)cast<ConstantSInt>(CA->getOperand(i))->getValue() :
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(unsigned char)cast<ConstantUInt>(CA->getOperand(i))->getValue();
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if (isprint(C) && C != '"' && C != '\\') {
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Out << C;
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} else {
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Out << '\\'
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<< (char) ((C/16 < 10) ? ( C/16 +'0') : ( C/16 -10+'A'))
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<< (char)(((C&15) < 10) ? ((C&15)+'0') : ((C&15)-10+'A'));
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}
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}
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Out << "\"";
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} else { // Cannot output in string format...
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Out << "[";
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if (CA->getNumOperands()) {
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Out << " ";
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printTypeInt(Out, ETy, TypeTable);
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WriteAsOperandInternal(Out, CA->getOperand(0),
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PrintName, TypeTable, Table);
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for (unsigned i = 1, e = CA->getNumOperands(); i != e; ++i) {
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Out << ", ";
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printTypeInt(Out, ETy, TypeTable);
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WriteAsOperandInternal(Out, CA->getOperand(i), PrintName,
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TypeTable, Table);
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}
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}
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Out << " ]";
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}
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} else if (const ConstantStruct *CS = dyn_cast<ConstantStruct>(CV)) {
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Out << "{";
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if (CS->getNumOperands()) {
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Out << " ";
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printTypeInt(Out, CS->getOperand(0)->getType(), TypeTable);
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WriteAsOperandInternal(Out, CS->getOperand(0),
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PrintName, TypeTable, Table);
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for (unsigned i = 1; i < CS->getNumOperands(); i++) {
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Out << ", ";
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printTypeInt(Out, CS->getOperand(i)->getType(), TypeTable);
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WriteAsOperandInternal(Out, CS->getOperand(i),
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PrintName, TypeTable, Table);
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}
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}
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Out << " }";
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} else if (isa<ConstantPointerNull>(CV)) {
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Out << "null";
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} else if (const ConstantPointerRef *PR = dyn_cast<ConstantPointerRef>(CV)) {
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const GlobalValue *V = PR->getValue();
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if (V->hasName()) {
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Out << "%" << V->getName();
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} else if (Table) {
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int Slot = Table->getValSlot(V);
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if (Slot >= 0)
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Out << "%" << Slot;
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else
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Out << "<pointer reference badref>";
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} else {
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Out << "<pointer reference without context info>";
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}
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} else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
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Out << CE->getOpcodeName() << " (";
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for (User::const_op_iterator OI=CE->op_begin(); OI != CE->op_end(); ++OI) {
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printTypeInt(Out, (*OI)->getType(), TypeTable);
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WriteAsOperandInternal(Out, *OI, PrintName, TypeTable, Table);
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if (OI+1 != CE->op_end())
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Out << ", ";
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}
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if (CE->getOpcode() == Instruction::Cast) {
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Out << " to ";
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printTypeInt(Out, CE->getType(), TypeTable);
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}
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Out << ")";
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} else {
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Out << "<placeholder or erroneous Constant>";
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}
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}
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// WriteAsOperand - Write the name of the specified value out to the specified
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// ostream. This can be useful when you just want to print int %reg126, not the
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// whole instruction that generated it.
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//
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static void WriteAsOperandInternal(ostream &Out, const Value *V, bool PrintName,
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map<const Type *, string> &TypeTable,
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SlotCalculator *Table) {
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Out << " ";
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if (PrintName && V->hasName()) {
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Out << "%" << V->getName();
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} else {
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if (const Constant *CV = dyn_cast<const Constant>(V)) {
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WriteConstantInt(Out, CV, PrintName, TypeTable, Table);
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} else {
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int Slot;
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if (Table) {
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Slot = Table->getValSlot(V);
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} else {
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if (const Type *Ty = dyn_cast<const Type>(V)) {
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Out << Ty->getDescription();
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return;
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}
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Table = createSlotCalculator(V);
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if (Table == 0) { Out << "BAD VALUE TYPE!"; return; }
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Slot = Table->getValSlot(V);
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delete Table;
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}
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if (Slot >= 0) Out << "%" << Slot;
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else if (PrintName)
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Out << "<badref>"; // Not embeded into a location?
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}
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}
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}
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// WriteAsOperand - Write the name of the specified value out to the specified
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// ostream. This can be useful when you just want to print int %reg126, not the
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// whole instruction that generated it.
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//
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ostream &WriteAsOperand(ostream &Out, const Value *V, bool PrintType,
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bool PrintName, const Module *Context) {
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map<const Type *, string> TypeNames;
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if (Context == 0) Context = getModuleFromVal(V);
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if (Context)
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fillTypeNameTable(Context, TypeNames);
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if (PrintType)
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printTypeInt(Out, V->getType(), TypeNames);
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WriteAsOperandInternal(Out, V, PrintName, TypeNames, 0);
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return Out;
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}
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class AssemblyWriter {
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ostream &Out;
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SlotCalculator &Table;
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const Module *TheModule;
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map<const Type *, string> TypeNames;
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public:
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inline AssemblyWriter(ostream &o, SlotCalculator &Tab, const Module *M)
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: Out(o), Table(Tab), TheModule(M) {
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// If the module has a symbol table, take all global types and stuff their
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// names into the TypeNames map.
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//
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fillTypeNameTable(M, TypeNames);
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}
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inline void write(const Module *M) { printModule(M); }
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inline void write(const GlobalVariable *G) { printGlobal(G); }
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inline void write(const Function *F) { printFunction(F); }
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inline void write(const BasicBlock *BB) { printBasicBlock(BB); }
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inline void write(const Instruction *I) { printInstruction(*I); }
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inline void write(const Constant *CPV) { printConstant(CPV); }
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inline void write(const Type *Ty) { printType(Ty); }
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void writeOperand(const Value *Op, bool PrintType, bool PrintName = true);
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private :
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void printModule(const Module *M);
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void printSymbolTable(const SymbolTable &ST);
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void printConstant(const Constant *CPV);
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void printGlobal(const GlobalVariable *GV);
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void printFunction(const Function *F);
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void printArgument(const Argument *FA);
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void printBasicBlock(const BasicBlock *BB);
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void printInstruction(const Instruction &I);
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// printType - Go to extreme measures to attempt to print out a short,
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// symbolic version of a type name.
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//
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ostream &printType(const Type *Ty) {
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return printTypeInt(Out, Ty, TypeNames);
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}
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// printTypeAtLeastOneLevel - Print out one level of the possibly complex type
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// without considering any symbolic types that we may have equal to it.
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//
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ostream &printTypeAtLeastOneLevel(const Type *Ty);
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// printInfoComment - Print a little comment after the instruction indicating
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// which slot it occupies.
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void printInfoComment(const Value &V);
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};
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// printTypeAtLeastOneLevel - Print out one level of the possibly complex type
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// without considering any symbolic types that we may have equal to it.
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//
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ostream &AssemblyWriter::printTypeAtLeastOneLevel(const Type *Ty) {
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if (const FunctionType *FTy = dyn_cast<FunctionType>(Ty)) {
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printType(FTy->getReturnType()) << " (";
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|
for (FunctionType::ParamTypes::const_iterator
|
|
I = FTy->getParamTypes().begin(),
|
|
E = FTy->getParamTypes().end(); I != E; ++I) {
|
|
if (I != FTy->getParamTypes().begin())
|
|
Out << ", ";
|
|
printType(*I);
|
|
}
|
|
if (FTy->isVarArg()) {
|
|
if (!FTy->getParamTypes().empty()) Out << ", ";
|
|
Out << "...";
|
|
}
|
|
Out << ")";
|
|
} else if (const StructType *STy = dyn_cast<StructType>(Ty)) {
|
|
Out << "{ ";
|
|
for (StructType::ElementTypes::const_iterator
|
|
I = STy->getElementTypes().begin(),
|
|
E = STy->getElementTypes().end(); I != E; ++I) {
|
|
if (I != STy->getElementTypes().begin())
|
|
Out << ", ";
|
|
printType(*I);
|
|
}
|
|
Out << " }";
|
|
} else if (const PointerType *PTy = dyn_cast<PointerType>(Ty)) {
|
|
printType(PTy->getElementType()) << "*";
|
|
} else if (const ArrayType *ATy = dyn_cast<ArrayType>(Ty)) {
|
|
Out << "[" << ATy->getNumElements() << " x ";
|
|
printType(ATy->getElementType()) << "]";
|
|
} else if (const OpaqueType *OTy = dyn_cast<OpaqueType>(Ty)) {
|
|
Out << OTy->getDescription();
|
|
} else {
|
|
if (!Ty->isPrimitiveType())
|
|
Out << "<unknown derived type>";
|
|
printType(Ty);
|
|
}
|
|
return Out;
|
|
}
|
|
|
|
|
|
void AssemblyWriter::writeOperand(const Value *Operand, bool PrintType,
|
|
bool PrintName) {
|
|
if (PrintType) { Out << " "; printType(Operand->getType()); }
|
|
WriteAsOperandInternal(Out, Operand, PrintName, TypeNames, &Table);
|
|
}
|
|
|
|
|
|
void AssemblyWriter::printModule(const Module *M) {
|
|
// Loop over the symbol table, emitting all named constants...
|
|
printSymbolTable(M->getSymbolTable());
|
|
|
|
for (Module::const_giterator I = M->gbegin(), E = M->gend(); I != E; ++I)
|
|
printGlobal(I);
|
|
|
|
Out << "\nimplementation ; Functions:\n";
|
|
|
|
// Output all of the functions...
|
|
for (Module::const_iterator I = M->begin(), E = M->end(); I != E; ++I)
|
|
printFunction(I);
|
|
}
|
|
|
|
void AssemblyWriter::printGlobal(const GlobalVariable *GV) {
|
|
if (GV->hasName()) Out << "%" << GV->getName() << " = ";
|
|
|
|
if (!GV->hasInitializer())
|
|
Out << "external ";
|
|
else
|
|
switch (GV->getLinkage()) {
|
|
case GlobalValue::InternalLinkage: Out << "internal "; break;
|
|
case GlobalValue::LinkOnceLinkage: Out << "linkonce "; break;
|
|
case GlobalValue::AppendingLinkage: Out << "appending "; break;
|
|
case GlobalValue::ExternalLinkage: break;
|
|
}
|
|
|
|
Out << (GV->isConstant() ? "constant " : "global ");
|
|
printType(GV->getType()->getElementType());
|
|
|
|
if (GV->hasInitializer())
|
|
writeOperand(GV->getInitializer(), false, false);
|
|
|
|
printInfoComment(*GV);
|
|
Out << "\n";
|
|
}
|
|
|
|
|
|
// printSymbolTable - Run through symbol table looking for named constants
|
|
// if a named constant is found, emit it's declaration...
|
|
//
|
|
void AssemblyWriter::printSymbolTable(const SymbolTable &ST) {
|
|
for (SymbolTable::const_iterator TI = ST.begin(); TI != ST.end(); ++TI) {
|
|
SymbolTable::type_const_iterator I = ST.type_begin(TI->first);
|
|
SymbolTable::type_const_iterator End = ST.type_end(TI->first);
|
|
|
|
for (; I != End; ++I) {
|
|
const Value *V = I->second;
|
|
if (const Constant *CPV = dyn_cast<const Constant>(V)) {
|
|
printConstant(CPV);
|
|
} else if (const Type *Ty = dyn_cast<const Type>(V)) {
|
|
Out << "\t%" << I->first << " = type ";
|
|
|
|
// Make sure we print out at least one level of the type structure, so
|
|
// that we do not get %FILE = type %FILE
|
|
//
|
|
printTypeAtLeastOneLevel(Ty) << "\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
// printConstant - Print out a constant pool entry...
|
|
//
|
|
void AssemblyWriter::printConstant(const Constant *CPV) {
|
|
// Don't print out unnamed constants, they will be inlined
|
|
if (!CPV->hasName()) return;
|
|
|
|
// Print out name...
|
|
Out << "\t%" << CPV->getName() << " =";
|
|
|
|
// Write the value out now...
|
|
writeOperand(CPV, true, false);
|
|
|
|
printInfoComment(*CPV);
|
|
Out << "\n";
|
|
}
|
|
|
|
// printFunction - Print all aspects of a function.
|
|
//
|
|
void AssemblyWriter::printFunction(const Function *F) {
|
|
// Print out the return type and name...
|
|
Out << "\n";
|
|
|
|
if (F->isExternal())
|
|
Out << "declare ";
|
|
else
|
|
switch (F->getLinkage()) {
|
|
case GlobalValue::InternalLinkage: Out << "internal "; break;
|
|
case GlobalValue::LinkOnceLinkage: Out << "linkonce "; break;
|
|
case GlobalValue::AppendingLinkage: Out << "appending "; break;
|
|
case GlobalValue::ExternalLinkage: break;
|
|
}
|
|
|
|
printType(F->getReturnType()) << " %" << F->getName() << "(";
|
|
Table.incorporateFunction(F);
|
|
|
|
// Loop over the arguments, printing them...
|
|
const FunctionType *FT = F->getFunctionType();
|
|
|
|
for(Function::const_aiterator I = F->abegin(), E = F->aend(); I != E; ++I)
|
|
printArgument(I);
|
|
|
|
// Finish printing arguments...
|
|
if (FT->isVarArg()) {
|
|
if (FT->getParamTypes().size()) Out << ", ";
|
|
Out << "..."; // Output varargs portion of signature!
|
|
}
|
|
Out << ")";
|
|
|
|
if (F->isExternal()) {
|
|
Out << "\n";
|
|
} else {
|
|
Out << " {";
|
|
|
|
// Output all of its basic blocks... for the function
|
|
for (Function::const_iterator I = F->begin(), E = F->end(); I != E; ++I)
|
|
printBasicBlock(I);
|
|
|
|
Out << "}\n";
|
|
}
|
|
|
|
Table.purgeFunction();
|
|
}
|
|
|
|
// printArgument - This member is called for every argument that
|
|
// is passed into the function. Simply print it out
|
|
//
|
|
void AssemblyWriter::printArgument(const Argument *Arg) {
|
|
// Insert commas as we go... the first arg doesn't get a comma
|
|
if (Arg != &Arg->getParent()->afront()) Out << ", ";
|
|
|
|
// Output type...
|
|
printType(Arg->getType());
|
|
|
|
// Output name, if available...
|
|
if (Arg->hasName())
|
|
Out << " %" << Arg->getName();
|
|
else if (Table.getValSlot(Arg) < 0)
|
|
Out << "<badref>";
|
|
}
|
|
|
|
// printBasicBlock - This member is called for each basic block in a methd.
|
|
//
|
|
void AssemblyWriter::printBasicBlock(const BasicBlock *BB) {
|
|
if (BB->hasName()) { // Print out the label if it exists...
|
|
Out << "\n" << BB->getName() << ":";
|
|
} else if (!BB->use_empty()) { // Don't print block # of no uses...
|
|
int Slot = Table.getValSlot(BB);
|
|
Out << "\n; <label>:";
|
|
if (Slot >= 0)
|
|
Out << Slot; // Extra newline seperates out label's
|
|
else
|
|
Out << "<badref>";
|
|
}
|
|
|
|
// Output predecessors for the block...
|
|
Out << "\t\t;";
|
|
pred_const_iterator PI = pred_begin(BB), PE = pred_end(BB);
|
|
|
|
if (PI == PE) {
|
|
Out << " No predecessors!";
|
|
} else {
|
|
Out << " preds =";
|
|
writeOperand(*PI, false, true);
|
|
for (++PI; PI != PE; ++PI) {
|
|
Out << ",";
|
|
writeOperand(*PI, false, true);
|
|
}
|
|
}
|
|
|
|
Out << "\n";
|
|
|
|
// Output all of the instructions in the basic block...
|
|
for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I)
|
|
printInstruction(*I);
|
|
}
|
|
|
|
|
|
// printInfoComment - Print a little comment after the instruction indicating
|
|
// which slot it occupies.
|
|
//
|
|
void AssemblyWriter::printInfoComment(const Value &V) {
|
|
if (V.getType() != Type::VoidTy) {
|
|
Out << "\t\t; <";
|
|
printType(V.getType()) << ">";
|
|
|
|
if (!V.hasName()) {
|
|
int Slot = Table.getValSlot(&V); // Print out the def slot taken...
|
|
if (Slot >= 0) Out << ":" << Slot;
|
|
else Out << ":<badref>";
|
|
}
|
|
Out << " [#uses=" << V.use_size() << "]"; // Output # uses
|
|
}
|
|
}
|
|
|
|
// printInstruction - This member is called for each Instruction in a methd.
|
|
//
|
|
void AssemblyWriter::printInstruction(const Instruction &I) {
|
|
Out << "\t";
|
|
|
|
// Print out name if it exists...
|
|
if (I.hasName())
|
|
Out << "%" << I.getName() << " = ";
|
|
|
|
// Print out the opcode...
|
|
Out << I.getOpcodeName();
|
|
|
|
// Print out the type of the operands...
|
|
const Value *Operand = I.getNumOperands() ? I.getOperand(0) : 0;
|
|
|
|
// Special case conditional branches to swizzle the condition out to the front
|
|
if (isa<BranchInst>(I) && I.getNumOperands() > 1) {
|
|
writeOperand(I.getOperand(2), true);
|
|
Out << ",";
|
|
writeOperand(Operand, true);
|
|
Out << ",";
|
|
writeOperand(I.getOperand(1), true);
|
|
|
|
} else if (isa<SwitchInst>(I)) {
|
|
// Special case switch statement to get formatting nice and correct...
|
|
writeOperand(Operand , true); Out << ",";
|
|
writeOperand(I.getOperand(1), true); Out << " [";
|
|
|
|
for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; op += 2) {
|
|
Out << "\n\t\t";
|
|
writeOperand(I.getOperand(op ), true); Out << ",";
|
|
writeOperand(I.getOperand(op+1), true);
|
|
}
|
|
Out << "\n\t]";
|
|
} else if (isa<PHINode>(I)) {
|
|
Out << " ";
|
|
printType(I.getType());
|
|
Out << " ";
|
|
|
|
for (unsigned op = 0, Eop = I.getNumOperands(); op < Eop; op += 2) {
|
|
if (op) Out << ", ";
|
|
Out << "[";
|
|
writeOperand(I.getOperand(op ), false); Out << ",";
|
|
writeOperand(I.getOperand(op+1), false); Out << " ]";
|
|
}
|
|
} else if (isa<ReturnInst>(I) && !Operand) {
|
|
Out << " void";
|
|
} else if (isa<CallInst>(I)) {
|
|
const PointerType *PTy = dyn_cast<PointerType>(Operand->getType());
|
|
const FunctionType*MTy = PTy ? dyn_cast<FunctionType>(PTy->getElementType()):0;
|
|
const Type *RetTy = MTy ? MTy->getReturnType() : 0;
|
|
|
|
// If possible, print out the short form of the call instruction, but we can
|
|
// only do this if the first argument is a pointer to a nonvararg function,
|
|
// and if the value returned is not a pointer to a function.
|
|
//
|
|
if (RetTy && MTy && !MTy->isVarArg() &&
|
|
(!isa<PointerType>(RetTy) ||
|
|
!isa<FunctionType>(cast<PointerType>(RetTy)->getElementType()))) {
|
|
Out << " "; printType(RetTy);
|
|
writeOperand(Operand, false);
|
|
} else {
|
|
writeOperand(Operand, true);
|
|
}
|
|
Out << "(";
|
|
if (I.getNumOperands() > 1) writeOperand(I.getOperand(1), true);
|
|
for (unsigned op = 2, Eop = I.getNumOperands(); op < Eop; ++op) {
|
|
Out << ",";
|
|
writeOperand(I.getOperand(op), true);
|
|
}
|
|
|
|
Out << " )";
|
|
} else if (const InvokeInst *II = dyn_cast<InvokeInst>(&I)) {
|
|
// TODO: Should try to print out short form of the Invoke instruction
|
|
writeOperand(Operand, true);
|
|
Out << "(";
|
|
if (I.getNumOperands() > 3) writeOperand(I.getOperand(3), true);
|
|
for (unsigned op = 4, Eop = I.getNumOperands(); op < Eop; ++op) {
|
|
Out << ",";
|
|
writeOperand(I.getOperand(op), true);
|
|
}
|
|
|
|
Out << " )\n\t\t\tto";
|
|
writeOperand(II->getNormalDest(), true);
|
|
Out << " except";
|
|
writeOperand(II->getExceptionalDest(), true);
|
|
|
|
} else if (const AllocationInst *AI = dyn_cast<AllocationInst>(&I)) {
|
|
Out << " ";
|
|
printType(AI->getType()->getElementType());
|
|
if (AI->isArrayAllocation()) {
|
|
Out << ",";
|
|
writeOperand(AI->getArraySize(), true);
|
|
}
|
|
} else if (isa<CastInst>(I)) {
|
|
if (Operand) writeOperand(Operand, true);
|
|
Out << " to ";
|
|
printType(I.getType());
|
|
} else if (Operand) { // Print the normal way...
|
|
|
|
// PrintAllTypes - Instructions who have operands of all the same type
|
|
// omit the type from all but the first operand. If the instruction has
|
|
// different type operands (for example br), then they are all printed.
|
|
bool PrintAllTypes = false;
|
|
const Type *TheType = Operand->getType();
|
|
|
|
// Shift Left & Right print both types even for Ubyte LHS
|
|
if (isa<ShiftInst>(I)) {
|
|
PrintAllTypes = true;
|
|
} else {
|
|
for (unsigned i = 1, E = I.getNumOperands(); i != E; ++i) {
|
|
Operand = I.getOperand(i);
|
|
if (Operand->getType() != TheType) {
|
|
PrintAllTypes = true; // We have differing types! Print them all!
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!PrintAllTypes) {
|
|
Out << " ";
|
|
printType(TheType);
|
|
}
|
|
|
|
for (unsigned i = 0, E = I.getNumOperands(); i != E; ++i) {
|
|
if (i) Out << ",";
|
|
writeOperand(I.getOperand(i), PrintAllTypes);
|
|
}
|
|
}
|
|
|
|
printInfoComment(I);
|
|
Out << "\n";
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// External Interface declarations
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
void Module::print(std::ostream &o) const {
|
|
SlotCalculator SlotTable(this, true);
|
|
AssemblyWriter W(o, SlotTable, this);
|
|
W.write(this);
|
|
}
|
|
|
|
void GlobalVariable::print(std::ostream &o) const {
|
|
SlotCalculator SlotTable(getParent(), true);
|
|
AssemblyWriter W(o, SlotTable, getParent());
|
|
W.write(this);
|
|
}
|
|
|
|
void Function::print(std::ostream &o) const {
|
|
SlotCalculator SlotTable(getParent(), true);
|
|
AssemblyWriter W(o, SlotTable, getParent());
|
|
|
|
W.write(this);
|
|
}
|
|
|
|
void BasicBlock::print(std::ostream &o) const {
|
|
SlotCalculator SlotTable(getParent(), true);
|
|
AssemblyWriter W(o, SlotTable,
|
|
getParent() ? getParent()->getParent() : 0);
|
|
W.write(this);
|
|
}
|
|
|
|
void Instruction::print(std::ostream &o) const {
|
|
const Function *F = getParent() ? getParent()->getParent() : 0;
|
|
SlotCalculator SlotTable(F, true);
|
|
AssemblyWriter W(o, SlotTable, F ? F->getParent() : 0);
|
|
|
|
W.write(this);
|
|
}
|
|
|
|
void Constant::print(std::ostream &o) const {
|
|
if (this == 0) { o << "<null> constant value\n"; return; }
|
|
|
|
// Handle CPR's special, because they have context information...
|
|
if (const ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(this)) {
|
|
CPR->getValue()->print(o); // Print as a global value, with context info.
|
|
return;
|
|
}
|
|
|
|
o << " " << getType()->getDescription() << " ";
|
|
|
|
map<const Type *, string> TypeTable;
|
|
WriteConstantInt(o, this, false, TypeTable, 0);
|
|
}
|
|
|
|
void Type::print(std::ostream &o) const {
|
|
if (this == 0)
|
|
o << "<null Type>";
|
|
else
|
|
o << getDescription();
|
|
}
|
|
|
|
void Argument::print(std::ostream &o) const {
|
|
o << getType() << " " << getName();
|
|
}
|
|
|
|
void Value::dump() const { print(std::cerr); }
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// CachedWriter Class Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
void CachedWriter::setModule(const Module *M) {
|
|
delete SC; delete AW;
|
|
if (M) {
|
|
SC = new SlotCalculator(M, true);
|
|
AW = new AssemblyWriter(Out, *SC, M);
|
|
} else {
|
|
SC = 0; AW = 0;
|
|
}
|
|
}
|
|
|
|
CachedWriter::~CachedWriter() {
|
|
delete AW;
|
|
delete SC;
|
|
}
|
|
|
|
CachedWriter &CachedWriter::operator<<(const Value *V) {
|
|
assert(AW && SC && "CachedWriter does not have a current module!");
|
|
switch (V->getValueType()) {
|
|
case Value::ConstantVal:
|
|
case Value::ArgumentVal: AW->writeOperand(V, true, true); break;
|
|
case Value::TypeVal: AW->write(cast<const Type>(V)); break;
|
|
case Value::InstructionVal: AW->write(cast<Instruction>(V)); break;
|
|
case Value::BasicBlockVal: AW->write(cast<BasicBlock>(V)); break;
|
|
case Value::FunctionVal: AW->write(cast<Function>(V)); break;
|
|
case Value::GlobalVariableVal: AW->write(cast<GlobalVariable>(V)); break;
|
|
default: Out << "<unknown value type: " << V->getValueType() << ">"; break;
|
|
}
|
|
return *this;
|
|
}
|