mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-19 19:29:31 +00:00
Finegrainify namespacification
Start using the AsmPrinter base class to factor out a bunch of code git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15840 91177308-0d34-0410-b5e6-96231b3b80d8
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055acae18c
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@ -24,6 +24,7 @@
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineInstr.h"
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@ -35,36 +36,17 @@
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#include "Support/Statistic.h"
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#include "Support/StringExtras.h"
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#include <set>
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namespace llvm {
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using 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 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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/// Target machine description which we query for reg. names, data
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/// layout, etc.
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///
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PowerPCTargetMachine &TM;
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/// Name-mangler for global names.
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///
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Mangler *Mang;
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struct PowerPCAsmPrinter : public AsmPrinter {
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std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
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std::set<std::string> Strings;
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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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/// runOnMachineFunction().
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///
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std::string CurrentFnName;
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PowerPCAsmPrinter(std::ostream &O, TargetMachine &TM)
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: AsmPrinter(O, TM), LabelNumber(0) {}
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/// Unique incrementer for label values for referencing Global values.
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///
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@ -74,6 +56,10 @@ namespace {
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return "PowerPC Assembly Printer";
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}
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PowerPCTargetMachine &getTM() {
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return static_cast<PowerPCTargetMachine&>(TM);
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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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@ -103,10 +89,8 @@ namespace {
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void printConstantPool(MachineConstantPool *MCP);
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bool runOnMachineFunction(MachineFunction &F);
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bool doInitialization(Module &M);
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bool doFinalization(Module &M);
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void emitGlobalConstant(const Constant* CV);
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void emitConstantValueOnly(const Constant *CV);
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};
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} // end of anonymous namespace
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@ -115,7 +99,7 @@ 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 *createPPCAsmPrinter(std::ostream &o,TargetMachine &tm) {
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FunctionPass *llvm::createPPCAsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new PowerPCAsmPrinter(o, tm);
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}
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@ -178,76 +162,6 @@ static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
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O << "\"";
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}
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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 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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assert(CB == ConstantBool::True);
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O << "1";
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} else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV))
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O << CI->getValue();
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else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV))
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O << CI->getValue();
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else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
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// This is a constant address for a global variable or function. Use the
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// name of the variable or function as the address value.
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O << Mang->getValueName(GV);
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else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
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const TargetData &TD = TM.getTargetData();
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switch (CE->getOpcode()) {
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case Instruction::GetElementPtr: {
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// generate a symbolic expression for the byte address
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const Constant *ptrVal = CE->getOperand(0);
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std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
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if (unsigned Offset = TD.getIndexedOffset(ptrVal->getType(), idxVec)) {
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O << "(";
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emitConstantValueOnly(ptrVal);
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O << ") + " << Offset;
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} else {
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emitConstantValueOnly(ptrVal);
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}
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break;
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}
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case Instruction::Cast: {
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// Support only non-converting or widening casts for now, that is, ones
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// that do not involve a change in value. This assertion is really gross,
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// and may not even be a complete check.
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Constant *Op = CE->getOperand(0);
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const Type *OpTy = Op->getType(), *Ty = CE->getType();
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// Remember, kids, pointers on x86 can be losslessly converted back and
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// forth into 32-bit or wider integers, regardless of signedness. :-P
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assert(((isa<PointerType>(OpTy)
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&& (Ty == Type::LongTy || Ty == Type::ULongTy
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|| Ty == Type::IntTy || Ty == Type::UIntTy))
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|| (isa<PointerType>(Ty)
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&& (OpTy == Type::LongTy || OpTy == Type::ULongTy
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|| OpTy == Type::IntTy || OpTy == Type::UIntTy))
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|| (((TD.getTypeSize(Ty) >= TD.getTypeSize(OpTy))
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&& OpTy->isLosslesslyConvertibleTo(Ty))))
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&& "FIXME: Don't yet support this kind of constant cast expr");
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O << "(";
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emitConstantValueOnly(Op);
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O << ")";
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break;
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}
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case Instruction::Add:
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O << "(";
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emitConstantValueOnly(CE->getOperand(0));
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O << ") + (";
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emitConstantValueOnly(CE->getOperand(1));
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O << ")";
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break;
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default:
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assert(0 && "Unsupported operator!");
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}
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} else {
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assert(0 && "Unknown constant value!");
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}
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}
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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 PowerPCAsmPrinter::emitGlobalConstant(const Constant *CV) {
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@ -382,9 +296,8 @@ void PowerPCAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
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/// method to print assembly for each instruction.
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///
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bool PowerPCAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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setupMachineFunction(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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// Print out constants referenced by the function
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printConstantPool(MF.getConstantPool());
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@ -467,20 +380,20 @@ void PowerPCAsmPrinter::printOp(const MachineOperand &MO,
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// are taken. Those should be emitted as $non_lazy_ptr below.
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Function *F = dyn_cast<Function>(GV);
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if (F && F->isExternal() && !LoadAddrOp &&
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TM.CalledFunctions.find(F) != TM.CalledFunctions.end()) {
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getTM().CalledFunctions.count(F)) {
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FnStubs.insert(Name);
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O << "L" << Name << "$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->isExternal() && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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if (GV->isExternal() && getTM().AddressTaken.count(GV)) {
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GVStubs.insert(Name);
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O << "L" << Name << "$non_lazy_ptr";
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return;
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}
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if (F && LoadAddrOp && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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if (F && LoadAddrOp && getTM().AddressTaken.count(GV)) {
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LinkOnceStubs.insert(Name);
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O << "L" << Name << "$non_lazy_ptr";
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return;
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@ -626,11 +539,6 @@ void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
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return;
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}
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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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// SwitchSection - Switch to the specified section of the executable if we are
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// not already in it!
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//
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@ -750,8 +658,6 @@ bool PowerPCAsmPrinter::doFinalization(Module &M) {
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<< "\t.long\t" << *i << '\n';
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}
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delete Mang;
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AsmPrinter::doFinalization(M);
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return false; // success
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}
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} // End llvm namespace
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@ -24,6 +24,7 @@
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#include "llvm/DerivedTypes.h"
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#include "llvm/Module.h"
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#include "llvm/Assembly/Writer.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/MachineConstantPool.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineInstr.h"
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@ -35,36 +36,17 @@
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#include "Support/Statistic.h"
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#include "Support/StringExtras.h"
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#include <set>
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namespace llvm {
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using 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 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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/// Target machine description which we query for reg. names, data
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/// layout, etc.
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///
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PowerPCTargetMachine &TM;
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/// Name-mangler for global names.
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///
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Mangler *Mang;
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struct PowerPCAsmPrinter : public AsmPrinter {
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std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
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std::set<std::string> Strings;
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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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/// runOnMachineFunction().
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///
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std::string CurrentFnName;
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PowerPCAsmPrinter(std::ostream &O, TargetMachine &TM)
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: AsmPrinter(O, TM), LabelNumber(0) {}
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/// Unique incrementer for label values for referencing Global values.
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///
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@ -74,6 +56,10 @@ namespace {
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return "PowerPC Assembly Printer";
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}
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PowerPCTargetMachine &getTM() {
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return static_cast<PowerPCTargetMachine&>(TM);
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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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@ -103,10 +89,8 @@ namespace {
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void printConstantPool(MachineConstantPool *MCP);
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bool runOnMachineFunction(MachineFunction &F);
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bool doInitialization(Module &M);
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bool doFinalization(Module &M);
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void emitGlobalConstant(const Constant* CV);
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void emitConstantValueOnly(const Constant *CV);
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};
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} // end of anonymous namespace
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@ -115,7 +99,7 @@ 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 *createPPCAsmPrinter(std::ostream &o,TargetMachine &tm) {
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FunctionPass *llvm::createPPCAsmPrinter(std::ostream &o,TargetMachine &tm) {
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return new PowerPCAsmPrinter(o, tm);
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}
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@ -178,76 +162,6 @@ static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
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O << "\"";
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}
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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 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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assert(CB == ConstantBool::True);
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O << "1";
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} else if (const ConstantSInt *CI = dyn_cast<ConstantSInt>(CV))
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O << CI->getValue();
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else if (const ConstantUInt *CI = dyn_cast<ConstantUInt>(CV))
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O << CI->getValue();
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else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV))
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// This is a constant address for a global variable or function. Use the
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// name of the variable or function as the address value.
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O << Mang->getValueName(GV);
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else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
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const TargetData &TD = TM.getTargetData();
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switch (CE->getOpcode()) {
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case Instruction::GetElementPtr: {
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// generate a symbolic expression for the byte address
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const Constant *ptrVal = CE->getOperand(0);
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std::vector<Value*> idxVec(CE->op_begin()+1, CE->op_end());
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if (unsigned Offset = TD.getIndexedOffset(ptrVal->getType(), idxVec)) {
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O << "(";
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emitConstantValueOnly(ptrVal);
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O << ") + " << Offset;
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} else {
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emitConstantValueOnly(ptrVal);
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}
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break;
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}
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case Instruction::Cast: {
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// Support only non-converting or widening casts for now, that is, ones
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// that do not involve a change in value. This assertion is really gross,
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// and may not even be a complete check.
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Constant *Op = CE->getOperand(0);
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const Type *OpTy = Op->getType(), *Ty = CE->getType();
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// Remember, kids, pointers on x86 can be losslessly converted back and
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// forth into 32-bit or wider integers, regardless of signedness. :-P
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assert(((isa<PointerType>(OpTy)
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&& (Ty == Type::LongTy || Ty == Type::ULongTy
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|| Ty == Type::IntTy || Ty == Type::UIntTy))
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|| (isa<PointerType>(Ty)
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&& (OpTy == Type::LongTy || OpTy == Type::ULongTy
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|| OpTy == Type::IntTy || OpTy == Type::UIntTy))
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|| (((TD.getTypeSize(Ty) >= TD.getTypeSize(OpTy))
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&& OpTy->isLosslesslyConvertibleTo(Ty))))
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&& "FIXME: Don't yet support this kind of constant cast expr");
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O << "(";
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emitConstantValueOnly(Op);
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O << ")";
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break;
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}
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case Instruction::Add:
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O << "(";
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emitConstantValueOnly(CE->getOperand(0));
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O << ") + (";
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emitConstantValueOnly(CE->getOperand(1));
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O << ")";
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break;
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default:
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assert(0 && "Unsupported operator!");
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}
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} else {
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assert(0 && "Unknown constant value!");
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}
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}
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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 PowerPCAsmPrinter::emitGlobalConstant(const Constant *CV) {
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@ -382,9 +296,8 @@ void PowerPCAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
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/// method to print assembly for each instruction.
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///
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bool PowerPCAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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setupMachineFunction(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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// Print out constants referenced by the function
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printConstantPool(MF.getConstantPool());
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@ -467,20 +380,20 @@ void PowerPCAsmPrinter::printOp(const MachineOperand &MO,
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// are taken. Those should be emitted as $non_lazy_ptr below.
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Function *F = dyn_cast<Function>(GV);
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if (F && F->isExternal() && !LoadAddrOp &&
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TM.CalledFunctions.find(F) != TM.CalledFunctions.end()) {
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getTM().CalledFunctions.count(F)) {
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FnStubs.insert(Name);
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O << "L" << Name << "$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->isExternal() && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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if (GV->isExternal() && getTM().AddressTaken.count(GV)) {
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GVStubs.insert(Name);
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O << "L" << Name << "$non_lazy_ptr";
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return;
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}
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if (F && LoadAddrOp && TM.AddressTaken.find(GV) != TM.AddressTaken.end()) {
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if (F && LoadAddrOp && getTM().AddressTaken.count(GV)) {
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LinkOnceStubs.insert(Name);
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O << "L" << Name << "$non_lazy_ptr";
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return;
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@ -626,11 +539,6 @@ void PowerPCAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
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return;
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}
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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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// SwitchSection - Switch to the specified section of the executable if we are
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// not already in it!
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//
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@ -750,8 +658,6 @@ bool PowerPCAsmPrinter::doFinalization(Module &M) {
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<< "\t.long\t" << *i << '\n';
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}
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delete Mang;
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AsmPrinter::doFinalization(M);
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return false; // success
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}
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} // End llvm namespace
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