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https://github.com/c64scene-ar/llvm-6502.git
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Teach CppWriter how to emit an inline (partial) function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28645 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
parent
5482ef3722
commit
f977e7bc83
@ -25,6 +25,7 @@
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/Support/MathExtras.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Config/config.h"
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#include <algorithm>
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#include <iostream>
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#include <set>
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@ -40,6 +41,7 @@ enum WhatToGenerate {
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GenModule,
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GenContents,
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GenFunction,
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GenInline,
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GenVariable,
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GenType
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};
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@ -52,6 +54,7 @@ static cl::opt<WhatToGenerate> GenerationType(cl::Optional,
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clEnumValN(GenModule, "gen-module", "Generate a module definition"),
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clEnumValN(GenContents,"gen-contents", "Generate contents of a module"),
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clEnumValN(GenFunction,"gen-function", "Generate a function definition"),
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clEnumValN(GenInline, "gen-inline", "Generate an inline function"),
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clEnumValN(GenVariable,"gen-variable", "Generate a variable definition"),
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clEnumValN(GenType, "gen-type", "Generate a type definition"),
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clEnumValEnd
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@ -84,11 +87,12 @@ class CppWriter {
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TypeSet DefinedTypes;
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ValueSet DefinedValues;
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ForwardRefMap ForwardRefs;
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bool is_inline;
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public:
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inline CppWriter(std::ostream &o, const Module *M, const char* pn="llvm2cpp")
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: progname(pn), Out(o), TheModule(M), uniqueNum(0), TypeNames(),
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ValueNames(), UnresolvedTypes(), TypeStack() { }
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ValueNames(), UnresolvedTypes(), TypeStack(), is_inline(false) { }
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const Module* getModule() { return TheModule; }
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@ -96,6 +100,7 @@ public:
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void printModule(const std::string& fname, const std::string& modName );
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void printContents(const std::string& fname, const std::string& modName );
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void printFunction(const std::string& fname, const std::string& funcName );
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void printInline(const std::string& fname, const std::string& funcName );
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void printVariable(const std::string& fname, const std::string& varName );
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void printType(const std::string& fname, const std::string& typeName );
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@ -195,6 +200,11 @@ CppWriter::error(const std::string& msg) {
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// result so that we don't lose precision.
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void
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CppWriter::printCFP(const ConstantFP *CFP) {
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Out << "ConstantFP::get(";
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if (CFP->getType() == Type::DoubleTy)
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Out << "Type::DoubleTy, ";
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else
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Out << "Type::FloatTy, ";
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#if HAVE_PRINTF_A
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char Buffer[100];
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sprintf(Buffer, "%A", CFP->getValue());
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@ -202,32 +212,37 @@ CppWriter::printCFP(const ConstantFP *CFP) {
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!strncmp(Buffer, "-0x", 3) ||
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!strncmp(Buffer, "+0x", 3)) &&
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(atof(Buffer) == CFP->getValue()))
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Out << Buffer;
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if (CFP->getType() == Type::DoubleTy)
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Out << "BitsToDouble(" << Buffer << ")";
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else
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Out << "BitsToFloat(" << Buffer << ")";
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else {
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#else
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std::string StrVal = ftostr(CFP->getValue());
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while (StrVal[0] == ' ')
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StrVal.erase(StrVal.begin());
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// Check to make sure that the stringized number is not some string like "Inf"
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// or NaN. Check that the string matches the "[-+]?[0-9]" regex.
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if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
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((StrVal[0] == '-' || StrVal[0] == '+') &&
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(StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
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(atof(StrVal.c_str()) == CFP->getValue()))
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Out << StrVal;
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else if (CFP->getType() == Type::DoubleTy) {
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Out << "0x" << std::hex << DoubleToBits(CFP->getValue()) << std::dec
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<< "ULL /* " << StrVal << " */";
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} else {
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Out << "0x" << std::hex << FloatToBits(CFP->getValue()) << std::dec
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<< "U /* " << StrVal << " */";
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}
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#endif
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std::string StrVal = ftostr(CFP->getValue());
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while (StrVal[0] == ' ')
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StrVal.erase(StrVal.begin());
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// Check to make sure that the stringized number is not some string like
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// "Inf" or NaN. Check that the string matches the "[-+]?[0-9]" regex.
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if (((StrVal[0] >= '0' && StrVal[0] <= '9') ||
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((StrVal[0] == '-' || StrVal[0] == '+') &&
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(StrVal[1] >= '0' && StrVal[1] <= '9'))) &&
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(atof(StrVal.c_str()) == CFP->getValue()))
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if (CFP->getType() == Type::DoubleTy)
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Out << StrVal;
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else
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Out << StrVal;
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else if (CFP->getType() == Type::DoubleTy)
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Out << "BitsToDouble(0x" << std::hex << DoubleToBits(CFP->getValue())
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<< std::dec << "ULL) /* " << StrVal << " */";
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else
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Out << "BitsToFloat(0x" << std::hex << FloatToBits(CFP->getValue())
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<< std::dec << "U) /* " << StrVal << " */";
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#if HAVE_PRINTF_A
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}
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#endif
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Out << ")";
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}
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void
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@ -353,6 +368,19 @@ CppWriter::getCppName(const Value* val) {
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name = std::string("func_");
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} else if (const Constant* C = dyn_cast<Constant>(val)) {
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name = std::string("const_") + getTypePrefix(C->getType());
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} else if (const Argument* Arg = dyn_cast<Argument>(val)) {
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if (is_inline) {
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unsigned argNum = std::distance(Arg->getParent()->arg_begin(),
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Function::const_arg_iterator(Arg)) + 1;
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name = std::string("arg_") + utostr(argNum);
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NameSet::iterator NI = UsedNames.find(name);
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if (NI != UsedNames.end())
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name += std::string("_") + utostr(uniqueNum++);
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UsedNames.insert(name);
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return ValueNames[val] = name;
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} else {
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name = getTypePrefix(val->getType());
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}
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} else {
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name = getTypePrefix(val->getType());
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}
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@ -629,10 +657,9 @@ void CppWriter::printConstant(const Constant *CV) {
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Out << "ConstantPointerNull* " << constName
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<< " = ConstanPointerNull::get(" << typeName << ");";
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} else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
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Out << "ConstantFP* " << constName << " = ConstantFP::get(" << typeName
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<< ", ";
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Out << "ConstantFP* " << constName << " = ";
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printCFP(CFP);
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Out << ");";
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Out << ";";
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} else if (const ConstantArray *CA = dyn_cast<ConstantArray>(CV)) {
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if (CA->isString() && CA->getType()->getElementType() == Type::SByteTy) {
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Out << "Constant* " << constName << " = ConstantArray::get(\"";
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@ -788,9 +815,13 @@ void CppWriter::printVariableUses(const GlobalVariable *GV) {
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}
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void CppWriter::printVariableHead(const GlobalVariable *GV) {
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Out << "\n";
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Out << "GlobalVariable* ";
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printCppName(GV);
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Out << "\nGlobalVariable* " << getCppName(GV);
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if (is_inline) {
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Out << " = mod->getGlobalVariable(";
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printEscapedString(GV->getName());
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Out << ", " << getCppName(GV->getType()->getElementType()) << ",true)\n";
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Out << "if (!" << getCppName(GV) << ") {\n " << getCppName(GV);
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}
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Out << " = new GlobalVariable(\n";
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Out << " /*Type=*/";
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printCppName(GV->getType()->getElementType());
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@ -816,6 +847,8 @@ void CppWriter::printVariableHead(const GlobalVariable *GV) {
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printCppName(GV);
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Out << "->setAlignment(" << utostr(GV->getAlignment()) << ");\n";
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};
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if (is_inline)
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Out << "}\n";
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}
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void
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@ -1168,16 +1201,18 @@ CppWriter::printInstruction(const Instruction *I, const std::string& bbname) {
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void CppWriter::printFunctionUses(const Function* F) {
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Out << "\n// Type Definitions\n";
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// Print the function's return type
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printType(F->getReturnType());
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if (!is_inline) {
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// Print the function's return type
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printType(F->getReturnType());
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// Print the function's function type
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printType(F->getFunctionType());
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// Print the function's function type
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printType(F->getFunctionType());
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// Print the types of each of the function's arguments
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for(Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
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AI != AE; ++AI) {
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printType(AI->getType());
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// Print the types of each of the function's arguments
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for(Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
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AI != AE; ++AI) {
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printType(AI->getType());
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}
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}
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// Print type definitions for every type referenced by an instruction and
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@ -1206,8 +1241,10 @@ void CppWriter::printFunctionUses(const Function* F) {
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Out << "\n// Function Declarations\n";
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for (std::vector<GlobalValue*>::iterator I = gvs.begin(), E = gvs.end();
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I != E; ++I) {
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if (Function* F = dyn_cast<Function>(*I))
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printFunctionHead(F);
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if (Function* Fun = dyn_cast<Function>(*I)) {
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if (!is_inline || Fun != F)
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printFunctionHead(Fun);
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}
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}
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// Print the global variable declarations for any variables encountered
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@ -1222,7 +1259,7 @@ void CppWriter::printFunctionUses(const Function* F) {
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Out << "\n// Constant Definitions\n";
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for (std::vector<Constant*>::iterator I = consts.begin(), E = consts.end();
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I != E; ++I) {
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printConstant(F);
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printConstant(*I);
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}
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// Process the global variables definitions now that all the constants have
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@ -1237,7 +1274,15 @@ void CppWriter::printFunctionUses(const Function* F) {
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}
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void CppWriter::printFunctionHead(const Function* F) {
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Out << "\nFunction* " << getCppName(F) << " = new Function(\n"
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Out << "\nFunction* " << getCppName(F);
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if (is_inline) {
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Out << " = mod->getFunction(\"";
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printEscapedString(F->getName());
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Out << "\", " << getCppName(F->getFunctionType()) << ");\n";
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Out << "if (!" << getCppName(F) << ") {\n";
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Out << getCppName(F);
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}
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Out<< " = new Function(\n"
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<< " /*Type=*/" << getCppName(F->getFunctionType()) << ",\n"
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<< " /*Linkage=*/";
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printLinkageType(F->getLinkage());
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@ -1257,6 +1302,9 @@ void CppWriter::printFunctionHead(const Function* F) {
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printCppName(F);
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Out << "->setAlignment(" << F->getAlignment() << ");\n";
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}
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if (is_inline) {
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Out << "}\n";
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}
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}
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void CppWriter::printFunctionBody(const Function *F) {
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@ -1269,16 +1317,18 @@ void CppWriter::printFunctionBody(const Function *F) {
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DefinedValues.clear();
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// Create all the argument values
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if (!F->arg_empty()) {
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Out << " Function::arg_iterator args = " << getCppName(F)
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<< "->arg_begin();\n";
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}
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for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
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AI != AE; ++AI) {
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Out << " Value* " << getCppName(AI) << " = args++;\n";
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if (AI->hasName())
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Out << " " << getCppName(AI) << "->setName(\"" << AI->getName()
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<< "\");\n";
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if (!is_inline) {
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if (!F->arg_empty()) {
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Out << " Function::arg_iterator args = " << getCppName(F)
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<< "->arg_begin();\n";
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}
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for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
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AI != AE; ++AI) {
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Out << " Value* " << getCppName(AI) << " = args++;\n";
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if (AI->hasName())
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Out << " " << getCppName(AI) << "->setName(\"" << AI->getName()
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<< "\");\n";
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}
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}
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// Create all the basic blocks
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@ -1317,6 +1367,32 @@ void CppWriter::printFunctionBody(const Function *F) {
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}
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}
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void CppWriter::printInline(const std::string& fname, const std::string& func) {
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const Function* F = TheModule->getNamedFunction(func);
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if (!F) {
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error(std::string("Function '") + func + "' not found in input module");
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return;
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}
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if (F->isExternal()) {
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error(std::string("Function '") + func + "' is external!");
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return;
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}
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Out << "\nBasicBlock* " << fname << "(Module* mod, Function *"
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<< getCppName(F);
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unsigned arg_count = 1;
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for (Function::const_arg_iterator AI = F->arg_begin(), AE = F->arg_end();
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AI != AE; ++AI) {
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Out << ", Value* arg_" << arg_count;
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}
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Out << ") {\n";
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is_inline = true;
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printFunctionUses(F);
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printFunctionBody(F);
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is_inline = false;
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Out << "return " << getCppName(F->begin()) << ";\n";
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Out << "}\n";
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}
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void CppWriter::printModuleBody() {
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// Print out all the type definitions
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Out << "\n// Type Definitions\n";
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@ -1378,6 +1454,7 @@ void CppWriter::printProgram(
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Out << "#include <llvm/BasicBlock.h>\n";
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Out << "#include <llvm/Instructions.h>\n";
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Out << "#include <llvm/InlineAsm.h>\n";
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Out << "#include <llvm/Support/MathExtras.h>\n";
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Out << "#include <llvm/Pass.h>\n";
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Out << "#include <llvm/PassManager.h>\n";
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Out << "#include <llvm/Analysis/Verifier.h>\n";
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@ -1551,6 +1628,11 @@ void WriteModuleToCppFile(Module* mod, std::ostream& o) {
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fname = "makeLLVMFunction";
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W.printFunction(fname,tgtname);
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break;
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case GenInline:
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if (fname.empty())
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fname = "makeLLVMInline";
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W.printInline(fname,tgtname);
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break;
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case GenVariable:
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if (fname.empty())
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fname = "makeLLVMVariable";
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