mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-19 03:29:22 +00:00
Add initial support for using the generated asm writer. Also, fix FP constant printing to always print 8 byte intializers. Move printing of LinkOnce stubs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15741 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nate Begeman
parent
14d89d6810
commit
e59bf59ba5
@ -19,7 +19,7 @@
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#define DEBUG_TYPE "asmprinter"
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#include "PowerPC.h"
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#include "PowerPCInstrInfo.h"
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#include "PPC32TargetMachine.h"
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#include "PowerPCTargetMachine.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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@ -40,7 +40,7 @@ namespace llvm {
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namespace {
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Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
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struct Printer : public MachineFunctionPass {
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struct PowerPCAsmPrinter : public MachineFunctionPass {
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/// Output stream on which we're printing assembly code.
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///
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std::ostream &O;
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@ -48,7 +48,7 @@ namespace {
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/// Target machine description which we query for reg. names, data
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/// layout, etc.
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///
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PPC32TargetMachine &TM;
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PowerPCTargetMachine &TM;
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/// Name-mangler for global names.
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///
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@ -56,8 +56,8 @@ namespace {
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std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
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std::set<std::string> Strings;
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Printer(std::ostream &o, TargetMachine &tm) : O(o),
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TM(reinterpret_cast<PPC32TargetMachine&>(tm)), LabelNumber(0) {}
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PowerPCAsmPrinter(std::ostream &o, TargetMachine &tm) : O(o),
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TM(reinterpret_cast<PowerPCTargetMachine&>(tm)), LabelNumber(0) {}
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/// Cache of mangled name for current function. This is
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/// recalculated at the beginning of each call to
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@ -70,9 +70,15 @@ namespace {
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unsigned LabelNumber;
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virtual const char *getPassName() const {
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return "PPC32 Assembly Printer";
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return "PowerPC Assembly Printer";
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}
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/// printInstruction - This method is automatically generated by tablegen
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/// from the instruction set description. This method returns true if the
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/// machine instruction was sufficiently described to print it, otherwise it
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/// returns false.
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bool printInstruction(const MachineInstr *MI);
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void printMachineInstruction(const MachineInstr *MI);
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void printOp(const MachineOperand &MO, bool LoadAddrOp = false);
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void printImmOp(const MachineOperand &MO, unsigned ArgType);
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@ -90,10 +96,13 @@ namespace {
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/// using the given target machine description. This should work
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/// regardless of whether the function is in SSA form or not.
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///
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FunctionPass *createPPC32AsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new Printer(o, tm);
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FunctionPass *createPPCAsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new PowerPCAsmPrinter(o, tm);
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}
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// Include the auto-generated portion of the assembly writer
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#include "PowerPCGenAsmWriter.inc"
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/// isStringCompatible - Can we treat the specified array as a string?
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/// Only if it is an array of ubytes or non-negative sbytes.
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///
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@ -152,7 +161,7 @@ static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
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// Print out the specified constant, without a storage class. Only the
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// constants valid in constant expressions can occur here.
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void Printer::emitConstantValueOnly(const Constant *CV) {
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void PowerPCAsmPrinter::emitConstantValueOnly(const Constant *CV) {
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if (CV->isNullValue())
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O << "0";
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else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
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@ -222,7 +231,7 @@ void Printer::emitConstantValueOnly(const Constant *CV) {
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// Print a constant value or values, with the appropriate storage class as a
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// prefix.
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void Printer::emitGlobalConstant(const Constant *CV) {
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void PowerPCAsmPrinter::emitGlobalConstant(const Constant *CV) {
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const TargetData &TD = TM.getTargetData();
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if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
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@ -263,35 +272,21 @@ void Printer::emitGlobalConstant(const Constant *CV) {
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// FP Constants are printed as integer constants to avoid losing
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// precision...
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double Val = CFP->getValue();
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switch (CFP->getType()->getTypeID()) {
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default: assert(0 && "Unknown floating point type!");
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case Type::FloatTyID: {
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union FU { // Abide by C TBAA rules
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float FVal;
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unsigned UVal;
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} U;
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U.FVal = Val;
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O << ".long\t" << U.UVal << "\t; float " << Val << "\n";
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return;
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}
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case Type::DoubleTyID: {
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union DU { // Abide by C TBAA rules
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double FVal;
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uint64_t UVal;
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struct {
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uint32_t MSWord;
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uint32_t LSWord;
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} T;
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} U;
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U.FVal = Val;
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O << ".long\t" << U.T.MSWord << "\t; double most significant word "
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<< Val << "\n";
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O << ".long\t" << U.T.LSWord << "\t; double least significant word "
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<< Val << "\n";
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return;
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}
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}
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union DU { // Abide by C TBAA rules
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double FVal;
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uint64_t UVal;
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struct {
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uint32_t MSWord;
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uint32_t LSWord;
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} T;
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} U;
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U.FVal = Val;
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O << ".long\t" << U.T.MSWord << "\t; double most significant word "
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<< Val << "\n";
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O << ".long\t" << U.T.LSWord << "\t; double least significant word "
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<< Val << "\n";
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return;
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} else if (CV->getType() == Type::ULongTy || CV->getType() == Type::LongTy) {
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if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
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union DU { // Abide by C TBAA rules
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@ -348,7 +343,7 @@ void Printer::emitGlobalConstant(const Constant *CV) {
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/// used to print out constants which have been "spilled to memory" by
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/// the code generator.
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///
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void Printer::printConstantPool(MachineConstantPool *MCP) {
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void PowerPCAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
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const std::vector<Constant*> &CP = MCP->getConstants();
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const TargetData &TD = TM.getTargetData();
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@ -367,7 +362,7 @@ void Printer::printConstantPool(MachineConstantPool *MCP) {
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/// runOnMachineFunction - This uses the printMachineInstruction()
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/// method to print assembly for each instruction.
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///
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bool Printer::runOnMachineFunction(MachineFunction &MF) {
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bool PowerPCAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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O << "\n\n";
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// What's my mangled name?
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CurrentFnName = Mang->getValueName(MF.getFunction());
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@ -400,7 +395,7 @@ bool Printer::runOnMachineFunction(MachineFunction &MF) {
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return false;
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}
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void Printer::printOp(const MachineOperand &MO,
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void PowerPCAsmPrinter::printOp(const MachineOperand &MO,
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bool LoadAddrOp /* = false */) {
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const MRegisterInfo &RI = *TM.getRegisterInfo();
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int new_symbol;
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@ -458,14 +453,19 @@ void Printer::printOp(const MachineOperand &MO,
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O << "L" << Name << "$stub";
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return;
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}
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// External global variables need a non-lazily-resolved stub
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if (!GV->hasInternalLinkage() &&
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TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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if (GV->isExternal() && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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GVStubs.insert(Name);
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O << "L" << Name << "$non_lazy_ptr";
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return;
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}
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if (F && LoadAddrOp && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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LinkOnceStubs.insert(Name);
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O << "L" << Name << "$non_lazy_ptr";
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return;
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}
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O << Mang->getValueName(GV);
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return;
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@ -477,7 +477,7 @@ void Printer::printOp(const MachineOperand &MO,
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}
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}
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void Printer::printImmOp(const MachineOperand &MO, unsigned ArgType) {
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void PowerPCAsmPrinter::printImmOp(const MachineOperand &MO, unsigned ArgType) {
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int Imm = MO.getImmedValue();
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if (ArgType == PPCII::Simm16 || ArgType == PPCII::Disimm16) {
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O << (short)Imm;
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@ -488,10 +488,14 @@ void Printer::printImmOp(const MachineOperand &MO, unsigned ArgType) {
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}
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}
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/// printMachineInstruction -- Print out a single PPC LLVM instruction
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/// MI in Darwin syntax to the current output stream.
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/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
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/// the current output stream.
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///
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void Printer::printMachineInstruction(const MachineInstr *MI) {
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void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
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++EmittedInsts;
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if (printInstruction(MI))
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return; // Printer was automatically generated
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unsigned Opcode = MI->getOpcode();
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const TargetInstrInfo &TII = *TM.getInstrInfo();
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const TargetInstrDescriptor &Desc = TII.get(Opcode);
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@ -509,7 +513,6 @@ void Printer::printMachineInstruction(const MachineInstr *MI) {
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"Instruction requires VMX support");
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assert(((Desc.TSFlags & PPCII::PPC64) == 0) &&
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"Instruction requires 64 bit support");
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++EmittedInsts;
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// CALLpcrel and CALLindirect are handled specially here to print only the
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// appropriate number of args that the assembler expects. This is because
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@ -603,9 +606,18 @@ void Printer::printMachineInstruction(const MachineInstr *MI) {
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O << ", ";
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}
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}
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return;
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// Call the autogenerated instruction printer routines.
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bool Handled = printInstruction(MI);
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if (!Handled) {
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MI->dump();
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assert(0 && "Do not know how to print this instruction!");
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abort();
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}
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}
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bool Printer::doInitialization(Module &M) {
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bool PowerPCAsmPrinter::doInitialization(Module &M) {
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Mang = new Mangler(M, true);
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return false; // success
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}
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@ -622,7 +634,7 @@ static void SwitchSection(std::ostream &OS, std::string &CurSection,
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}
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}
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bool Printer::doFinalization(Module &M) {
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bool PowerPCAsmPrinter::doFinalization(Module &M) {
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const TargetData &TD = TM.getTargetData();
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std::string CurSection;
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@ -683,15 +695,6 @@ bool Printer::doFinalization(Module &M) {
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}
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}
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// Output stubs for link-once variables
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if (LinkOnceStubs.begin() != LinkOnceStubs.end())
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O << ".data\n.align 2\n";
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for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
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e = LinkOnceStubs.end(); i != e; ++i) {
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O << *i << "$non_lazy_ptr:\n"
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<< "\t.long\t" << *i << '\n';
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}
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// Output stubs for dynamically-linked functions
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for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
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i != e; ++i)
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@ -729,6 +732,15 @@ bool Printer::doFinalization(Module &M) {
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O << "\t.long\t0\n";
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}
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// Output stubs for link-once variables
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if (LinkOnceStubs.begin() != LinkOnceStubs.end())
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O << ".data\n.align 2\n";
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for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
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e = LinkOnceStubs.end(); i != e; ++i) {
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O << "L" << *i << "$non_lazy_ptr:\n"
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<< "\t.long\t" << *i << '\n';
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}
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delete Mang;
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return false; // success
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}
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@ -19,7 +19,7 @@
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#define DEBUG_TYPE "asmprinter"
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#include "PowerPC.h"
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#include "PowerPCInstrInfo.h"
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#include "PPC32TargetMachine.h"
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#include "PowerPCTargetMachine.h"
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#include "llvm/Constants.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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@ -40,7 +40,7 @@ namespace llvm {
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namespace {
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Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
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struct Printer : public MachineFunctionPass {
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struct PowerPCAsmPrinter : public MachineFunctionPass {
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/// Output stream on which we're printing assembly code.
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///
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std::ostream &O;
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@ -48,7 +48,7 @@ namespace {
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/// Target machine description which we query for reg. names, data
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/// layout, etc.
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///
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PPC32TargetMachine &TM;
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PowerPCTargetMachine &TM;
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/// Name-mangler for global names.
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///
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@ -56,8 +56,8 @@ namespace {
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std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
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std::set<std::string> Strings;
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Printer(std::ostream &o, TargetMachine &tm) : O(o),
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TM(reinterpret_cast<PPC32TargetMachine&>(tm)), LabelNumber(0) {}
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PowerPCAsmPrinter(std::ostream &o, TargetMachine &tm) : O(o),
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TM(reinterpret_cast<PowerPCTargetMachine&>(tm)), LabelNumber(0) {}
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/// Cache of mangled name for current function. This is
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/// recalculated at the beginning of each call to
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@ -70,9 +70,15 @@ namespace {
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unsigned LabelNumber;
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virtual const char *getPassName() const {
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return "PPC32 Assembly Printer";
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return "PowerPC Assembly Printer";
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}
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/// printInstruction - This method is automatically generated by tablegen
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/// from the instruction set description. This method returns true if the
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/// machine instruction was sufficiently described to print it, otherwise it
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/// returns false.
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bool printInstruction(const MachineInstr *MI);
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void printMachineInstruction(const MachineInstr *MI);
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void printOp(const MachineOperand &MO, bool LoadAddrOp = false);
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void printImmOp(const MachineOperand &MO, unsigned ArgType);
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@ -90,10 +96,13 @@ namespace {
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/// using the given target machine description. This should work
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/// regardless of whether the function is in SSA form or not.
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///
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FunctionPass *createPPC32AsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new Printer(o, tm);
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FunctionPass *createPPCAsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new PowerPCAsmPrinter(o, tm);
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}
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// Include the auto-generated portion of the assembly writer
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#include "PowerPCGenAsmWriter.inc"
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/// isStringCompatible - Can we treat the specified array as a string?
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/// Only if it is an array of ubytes or non-negative sbytes.
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///
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@ -152,7 +161,7 @@ static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
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// Print out the specified constant, without a storage class. Only the
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// constants valid in constant expressions can occur here.
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void Printer::emitConstantValueOnly(const Constant *CV) {
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void PowerPCAsmPrinter::emitConstantValueOnly(const Constant *CV) {
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if (CV->isNullValue())
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O << "0";
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else if (const ConstantBool *CB = dyn_cast<ConstantBool>(CV)) {
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@ -222,7 +231,7 @@ void Printer::emitConstantValueOnly(const Constant *CV) {
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// Print a constant value or values, with the appropriate storage class as a
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// prefix.
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void Printer::emitGlobalConstant(const Constant *CV) {
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void PowerPCAsmPrinter::emitGlobalConstant(const Constant *CV) {
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const TargetData &TD = TM.getTargetData();
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if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
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@ -263,35 +272,21 @@ void Printer::emitGlobalConstant(const Constant *CV) {
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// FP Constants are printed as integer constants to avoid losing
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// precision...
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double Val = CFP->getValue();
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switch (CFP->getType()->getTypeID()) {
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default: assert(0 && "Unknown floating point type!");
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case Type::FloatTyID: {
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union FU { // Abide by C TBAA rules
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float FVal;
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unsigned UVal;
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} U;
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U.FVal = Val;
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O << ".long\t" << U.UVal << "\t; float " << Val << "\n";
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return;
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}
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case Type::DoubleTyID: {
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union DU { // Abide by C TBAA rules
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double FVal;
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uint64_t UVal;
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struct {
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uint32_t MSWord;
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uint32_t LSWord;
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} T;
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} U;
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U.FVal = Val;
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O << ".long\t" << U.T.MSWord << "\t; double most significant word "
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<< Val << "\n";
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O << ".long\t" << U.T.LSWord << "\t; double least significant word "
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<< Val << "\n";
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return;
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}
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}
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union DU { // Abide by C TBAA rules
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double FVal;
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uint64_t UVal;
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struct {
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uint32_t MSWord;
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uint32_t LSWord;
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} T;
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} U;
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U.FVal = Val;
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O << ".long\t" << U.T.MSWord << "\t; double most significant word "
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<< Val << "\n";
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O << ".long\t" << U.T.LSWord << "\t; double least significant word "
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<< Val << "\n";
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return;
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} else if (CV->getType() == Type::ULongTy || CV->getType() == Type::LongTy) {
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if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
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union DU { // Abide by C TBAA rules
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@ -348,7 +343,7 @@ void Printer::emitGlobalConstant(const Constant *CV) {
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/// used to print out constants which have been "spilled to memory" by
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/// the code generator.
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///
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void Printer::printConstantPool(MachineConstantPool *MCP) {
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void PowerPCAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
|
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const std::vector<Constant*> &CP = MCP->getConstants();
|
||||
const TargetData &TD = TM.getTargetData();
|
||||
|
||||
@ -367,7 +362,7 @@ void Printer::printConstantPool(MachineConstantPool *MCP) {
|
||||
/// runOnMachineFunction - This uses the printMachineInstruction()
|
||||
/// method to print assembly for each instruction.
|
||||
///
|
||||
bool Printer::runOnMachineFunction(MachineFunction &MF) {
|
||||
bool PowerPCAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
|
||||
O << "\n\n";
|
||||
// What's my mangled name?
|
||||
CurrentFnName = Mang->getValueName(MF.getFunction());
|
||||
@ -400,7 +395,7 @@ bool Printer::runOnMachineFunction(MachineFunction &MF) {
|
||||
return false;
|
||||
}
|
||||
|
||||
void Printer::printOp(const MachineOperand &MO,
|
||||
void PowerPCAsmPrinter::printOp(const MachineOperand &MO,
|
||||
bool LoadAddrOp /* = false */) {
|
||||
const MRegisterInfo &RI = *TM.getRegisterInfo();
|
||||
int new_symbol;
|
||||
@ -458,14 +453,19 @@ void Printer::printOp(const MachineOperand &MO,
|
||||
O << "L" << Name << "$stub";
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
// External global variables need a non-lazily-resolved stub
|
||||
if (!GV->hasInternalLinkage() &&
|
||||
TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
|
||||
if (GV->isExternal() && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
|
||||
GVStubs.insert(Name);
|
||||
O << "L" << Name << "$non_lazy_ptr";
|
||||
return;
|
||||
}
|
||||
|
||||
if (F && LoadAddrOp && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
|
||||
LinkOnceStubs.insert(Name);
|
||||
O << "L" << Name << "$non_lazy_ptr";
|
||||
return;
|
||||
}
|
||||
|
||||
O << Mang->getValueName(GV);
|
||||
return;
|
||||
@ -477,7 +477,7 @@ void Printer::printOp(const MachineOperand &MO,
|
||||
}
|
||||
}
|
||||
|
||||
void Printer::printImmOp(const MachineOperand &MO, unsigned ArgType) {
|
||||
void PowerPCAsmPrinter::printImmOp(const MachineOperand &MO, unsigned ArgType) {
|
||||
int Imm = MO.getImmedValue();
|
||||
if (ArgType == PPCII::Simm16 || ArgType == PPCII::Disimm16) {
|
||||
O << (short)Imm;
|
||||
@ -488,10 +488,14 @@ void Printer::printImmOp(const MachineOperand &MO, unsigned ArgType) {
|
||||
}
|
||||
}
|
||||
|
||||
/// printMachineInstruction -- Print out a single PPC LLVM instruction
|
||||
/// MI in Darwin syntax to the current output stream.
|
||||
/// printMachineInstruction -- Print out a single PowerPC MI in Darwin syntax to
|
||||
/// the current output stream.
|
||||
///
|
||||
void Printer::printMachineInstruction(const MachineInstr *MI) {
|
||||
void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
|
||||
++EmittedInsts;
|
||||
if (printInstruction(MI))
|
||||
return; // Printer was automatically generated
|
||||
|
||||
unsigned Opcode = MI->getOpcode();
|
||||
const TargetInstrInfo &TII = *TM.getInstrInfo();
|
||||
const TargetInstrDescriptor &Desc = TII.get(Opcode);
|
||||
@ -509,7 +513,6 @@ void Printer::printMachineInstruction(const MachineInstr *MI) {
|
||||
"Instruction requires VMX support");
|
||||
assert(((Desc.TSFlags & PPCII::PPC64) == 0) &&
|
||||
"Instruction requires 64 bit support");
|
||||
++EmittedInsts;
|
||||
|
||||
// CALLpcrel and CALLindirect are handled specially here to print only the
|
||||
// appropriate number of args that the assembler expects. This is because
|
||||
@ -603,9 +606,18 @@ void Printer::printMachineInstruction(const MachineInstr *MI) {
|
||||
O << ", ";
|
||||
}
|
||||
}
|
||||
return;
|
||||
|
||||
// Call the autogenerated instruction printer routines.
|
||||
bool Handled = printInstruction(MI);
|
||||
if (!Handled) {
|
||||
MI->dump();
|
||||
assert(0 && "Do not know how to print this instruction!");
|
||||
abort();
|
||||
}
|
||||
}
|
||||
|
||||
bool Printer::doInitialization(Module &M) {
|
||||
bool PowerPCAsmPrinter::doInitialization(Module &M) {
|
||||
Mang = new Mangler(M, true);
|
||||
return false; // success
|
||||
}
|
||||
@ -622,7 +634,7 @@ static void SwitchSection(std::ostream &OS, std::string &CurSection,
|
||||
}
|
||||
}
|
||||
|
||||
bool Printer::doFinalization(Module &M) {
|
||||
bool PowerPCAsmPrinter::doFinalization(Module &M) {
|
||||
const TargetData &TD = TM.getTargetData();
|
||||
std::string CurSection;
|
||||
|
||||
@ -683,15 +695,6 @@ bool Printer::doFinalization(Module &M) {
|
||||
}
|
||||
}
|
||||
|
||||
// Output stubs for link-once variables
|
||||
if (LinkOnceStubs.begin() != LinkOnceStubs.end())
|
||||
O << ".data\n.align 2\n";
|
||||
for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
|
||||
e = LinkOnceStubs.end(); i != e; ++i) {
|
||||
O << *i << "$non_lazy_ptr:\n"
|
||||
<< "\t.long\t" << *i << '\n';
|
||||
}
|
||||
|
||||
// Output stubs for dynamically-linked functions
|
||||
for (std::set<std::string>::iterator i = FnStubs.begin(), e = FnStubs.end();
|
||||
i != e; ++i)
|
||||
@ -729,6 +732,15 @@ bool Printer::doFinalization(Module &M) {
|
||||
O << "\t.long\t0\n";
|
||||
}
|
||||
|
||||
// Output stubs for link-once variables
|
||||
if (LinkOnceStubs.begin() != LinkOnceStubs.end())
|
||||
O << ".data\n.align 2\n";
|
||||
for (std::set<std::string>::iterator i = LinkOnceStubs.begin(),
|
||||
e = LinkOnceStubs.end(); i != e; ++i) {
|
||||
O << "L" << *i << "$non_lazy_ptr:\n"
|
||||
<< "\t.long\t" << *i << '\n';
|
||||
}
|
||||
|
||||
delete Mang;
|
||||
return false; // success
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user