#include "llvm/Constants.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
+#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/AsmPrinter.h"
#include "llvm/CodeGen/DwarfWriter.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Target/TargetAsmInfo.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCSymbol.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetRegistry.h"
#include "llvm/ADT/Statistic.h"
-#include "llvm/Support/Compiler.h"
-#include "llvm/Support/Mangler.h"
-#include "llvm/Support/raw_ostream.h"
-
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
using namespace llvm;
STATISTIC(EmittedInsts, "Number of machine instrs printed");
namespace {
- class VISIBILITY_HIDDEN SystemZAsmPrinter : public AsmPrinter {
+ class SystemZAsmPrinter : public AsmPrinter {
public:
- SystemZAsmPrinter(raw_ostream &O, SystemZTargetMachine &TM,
- const TargetAsmInfo *TAI,
- CodeGenOpt::Level OL, bool V)
- : AsmPrinter(O, TM, TAI, OL, V) {}
+ SystemZAsmPrinter(formatted_raw_ostream &O, TargetMachine &TM,
+ const MCAsmInfo *MAI, bool V)
+ : AsmPrinter(O, TM, MAI, V) {}
virtual const char *getPassName() const {
return "SystemZ Assembly Printer";
void printOperand(const MachineInstr *MI, int OpNum,
const char* Modifier = 0);
+ void printPCRelImmOperand(const MachineInstr *MI, int OpNum);
void printRIAddrOperand(const MachineInstr *MI, int OpNum,
const char* Modifier = 0);
void printRRIAddrOperand(const MachineInstr *MI, int OpNum,
const char* Modifier = 0);
- bool printInstruction(const MachineInstr *MI); // autogenerated.
+ void printS16ImmOperand(const MachineInstr *MI, int OpNum) {
+ O << (int16_t)MI->getOperand(OpNum).getImm();
+ }
+ void printS32ImmOperand(const MachineInstr *MI, int OpNum) {
+ O << (int32_t)MI->getOperand(OpNum).getImm();
+ }
+
+ void printInstruction(const MachineInstr *MI); // autogenerated.
+ static const char *getRegisterName(unsigned RegNo);
+
void printMachineInstruction(const MachineInstr * MI);
void emitFunctionHeader(const MachineFunction &MF);
bool runOnMachineFunction(MachineFunction &F);
- bool doInitialization(Module &M);
- bool doFinalization(Module &M);
+ void PrintGlobalVariable(const GlobalVariable* GVar);
void getAnalysisUsage(AnalysisUsage &AU) const {
AsmPrinter::getAnalysisUsage(AU);
#include "SystemZGenAsmWriter.inc"
-/// createSystemZCodePrinterPass - Returns a pass that prints the SystemZ
-/// assembly code for a MachineFunction to the given output stream,
-/// using the given target machine description. This should work
-/// regardless of whether the function is in SSA form.
-///
-FunctionPass *llvm::createSystemZCodePrinterPass(raw_ostream &o,
- SystemZTargetMachine &tm,
- CodeGenOpt::Level OptLevel,
- bool verbose) {
- return new SystemZAsmPrinter(o, tm, tm.getTargetAsmInfo(), OptLevel, verbose);
-}
-
-bool SystemZAsmPrinter::doInitialization(Module &M) {
- Mang = new Mangler(M, "", TAI->getPrivateGlobalPrefix());
- return false; // success
-}
-
-
-bool SystemZAsmPrinter::doFinalization(Module &M) {
- return AsmPrinter::doFinalization(M);
-}
-
void SystemZAsmPrinter::emitFunctionHeader(const MachineFunction &MF) {
+ unsigned FnAlign = MF.getAlignment();
const Function *F = MF.getFunction();
- SwitchToSection(TAI->SectionForGlobal(F));
-
- unsigned FnAlign = 4;
- if (F->hasFnAttr(Attribute::OptimizeForSize))
- FnAlign = 1;
+ OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(F, Mang, TM));
EmitAlignment(FnAlign, F);
default: assert(0 && "Unknown linkage type!");
case Function::InternalLinkage: // Symbols default to internal.
case Function::PrivateLinkage:
+ case Function::LinkerPrivateLinkage:
break;
case Function::ExternalLinkage:
- O << "\t.globl\t" << CurrentFnName << '\n';
+ O << "\t.globl\t" << *CurrentFnSym << '\n';
break;
case Function::LinkOnceAnyLinkage:
case Function::LinkOnceODRLinkage:
case Function::WeakAnyLinkage:
case Function::WeakODRLinkage:
- O << "\t.weak\t" << CurrentFnName << '\n';
+ O << "\t.weak\t" << *CurrentFnSym << '\n';
break;
}
- printVisibility(CurrentFnName, F->getVisibility());
+ printVisibility(CurrentFnSym, F->getVisibility());
- O << "\t.type\t" << CurrentFnName << ",@function\n"
- << CurrentFnName << ":\n";
+ O << "\t.type\t" << *CurrentFnSym << ",@function\n";
+ O << *CurrentFnSym << ":\n";
}
bool SystemZAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
SetupMachineFunction(MF);
O << "\n\n";
+ // Print out constants referenced by the function
+ EmitConstantPool(MF.getConstantPool());
+
// Print the 'header' of function
emitFunctionHeader(MF);
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {
// Print a label for the basic block.
- if (!VerboseAsm && (I->pred_empty() || I->isOnlyReachableByFallthrough())) {
- // This is an entry block or a block that's only reachable via a
- // fallthrough edge. In non-VerboseAsm mode, don't print the label.
- } else {
- printBasicBlockLabel(I, true, true, VerboseAsm);
- O << '\n';
- }
+ EmitBasicBlockStart(I);
for (MachineBasicBlock::const_iterator II = I->begin(), E = I->end();
II != E; ++II)
printMachineInstruction(II);
}
- if (TAI->hasDotTypeDotSizeDirective())
- O << "\t.size\t" << CurrentFnName << ", .-" << CurrentFnName << '\n';
+ if (MAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << *CurrentFnSym << ", .-" << *CurrentFnSym << '\n';
- O.flush();
+ // Print out jump tables referenced by the function.
+ EmitJumpTableInfo(MF.getJumpTableInfo(), MF);
// We didn't modify anything
return false;
void SystemZAsmPrinter::printMachineInstruction(const MachineInstr *MI) {
++EmittedInsts;
+ processDebugLoc(MI, true);
+
// Call the autogenerated instruction printer routines.
- if (printInstruction(MI))
+ printInstruction(MI);
+
+ if (VerboseAsm)
+ EmitComments(*MI);
+ O << '\n';
+
+ processDebugLoc(MI, false);
+}
+
+void SystemZAsmPrinter::printPCRelImmOperand(const MachineInstr *MI, int OpNum){
+ const MachineOperand &MO = MI->getOperand(OpNum);
+ switch (MO.getType()) {
+ case MachineOperand::MO_Immediate:
+ O << MO.getImm();
+ return;
+ case MachineOperand::MO_MachineBasicBlock:
+ O << *GetMBBSymbol(MO.getMBB()->getNumber());
return;
+ case MachineOperand::MO_GlobalAddress: {
+ const GlobalValue *GV = MO.getGlobal();
+ O << *GetGlobalValueSymbol(GV);
+
+ // Assemble calls via PLT for externally visible symbols if PIC.
+ if (TM.getRelocationModel() == Reloc::PIC_ &&
+ !GV->hasHiddenVisibility() && !GV->hasProtectedVisibility() &&
+ !GV->hasLocalLinkage())
+ O << "@PLT";
+
+ printOffset(MO.getOffset());
+ return;
+ }
+ case MachineOperand::MO_ExternalSymbol: {
+ std::string Name(MAI->getGlobalPrefix());
+ Name += MO.getSymbolName();
+ O << Name;
+
+ if (TM.getRelocationModel() == Reloc::PIC_)
+ O << "@PLT";
- assert(0 && "Should not happen");
+ return;
+ }
+ default:
+ assert(0 && "Not implemented yet!");
+ }
}
+
void SystemZAsmPrinter::printOperand(const MachineInstr *MI, int OpNum,
const char* Modifier) {
const MachineOperand &MO = MI->getOperand(OpNum);
switch (MO.getType()) {
- case MachineOperand::MO_Register:
+ case MachineOperand::MO_Register: {
assert (TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
"Virtual registers should be already mapped!");
- O << '%' << TM.getRegisterInfo()->get(MO.getReg()).AsmName;
+ unsigned Reg = MO.getReg();
+ if (Modifier && strncmp(Modifier, "subreg", 6) == 0) {
+ if (strncmp(Modifier + 7, "even", 4) == 0)
+ Reg = TRI->getSubReg(Reg, SystemZ::SUBREG_EVEN);
+ else if (strncmp(Modifier + 7, "odd", 3) == 0)
+ Reg = TRI->getSubReg(Reg, SystemZ::SUBREG_ODD);
+ else
+ assert(0 && "Invalid subreg modifier");
+ }
+
+ O << '%' << getRegisterName(Reg);
return;
+ }
case MachineOperand::MO_Immediate:
O << MO.getImm();
return;
case MachineOperand::MO_MachineBasicBlock:
- printBasicBlockLabel(MO.getMBB());
+ O << *GetMBBSymbol(MO.getMBB()->getNumber());
return;
+ case MachineOperand::MO_JumpTableIndex:
+ O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber() << '_'
+ << MO.getIndex();
+
+ return;
+ case MachineOperand::MO_ConstantPoolIndex:
+ O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
+ << MO.getIndex();
+
+ printOffset(MO.getOffset());
+ break;
+ case MachineOperand::MO_GlobalAddress:
+ O << *GetGlobalValueSymbol(MO.getGlobal());
+ break;
+ case MachineOperand::MO_ExternalSymbol: {
+ O << *GetExternalSymbolSymbol(MO.getSymbolName());
+ break;
+ }
default:
assert(0 && "Not implemented yet!");
}
+
+ switch (MO.getTargetFlags()) {
+ default:
+ llvm_unreachable("Unknown target flag on GV operand");
+ case SystemZII::MO_NO_FLAG:
+ break;
+ case SystemZII::MO_GOTENT: O << "@GOTENT"; break;
+ case SystemZII::MO_PLT: O << "@PLT"; break;
+ }
+
+ printOffset(MO.getOffset());
}
void SystemZAsmPrinter::printRIAddrOperand(const MachineInstr *MI, int OpNum,
void SystemZAsmPrinter::printRRIAddrOperand(const MachineInstr *MI, int OpNum,
const char* Modifier) {
const MachineOperand &Base = MI->getOperand(OpNum);
- const MachineOperand &Index = MI->getOperand(OpNum+1);
+ const MachineOperand &Index = MI->getOperand(OpNum+2);
// Print displacement operand.
- printOperand(MI, OpNum+2);
+ printOperand(MI, OpNum+1);
// Print base operand (if any)
if (Base.getReg()) {
printOperand(MI, OpNum);
if (Index.getReg()) {
O << ',';
- printOperand(MI, OpNum+1);
+ printOperand(MI, OpNum+2);
}
O << ')';
} else
assert(!Index.getReg() && "Should allocate base register first!");
}
+void SystemZAsmPrinter::PrintGlobalVariable(const GlobalVariable* GVar) {
+ const TargetData *TD = TM.getTargetData();
+
+ if (!GVar->hasInitializer())
+ return; // External global require no code
+
+ // Check to see if this is a special global used by LLVM, if so, emit it.
+ if (EmitSpecialLLVMGlobal(GVar))
+ return;
+
+ MCSymbol *GVarSym = GetGlobalValueSymbol(GVar);
+ Constant *C = GVar->getInitializer();
+ unsigned Size = TD->getTypeAllocSize(C->getType());
+ unsigned Align = std::max(1U, TD->getPreferredAlignmentLog(GVar));
+
+ printVisibility(GVarSym, GVar->getVisibility());
+
+ O << "\t.type\t" << *GVarSym << ",@object\n";
+
+ OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(GVar, Mang,
+ TM));
+
+ if (C->isNullValue() && !GVar->hasSection() &&
+ !GVar->isThreadLocal() &&
+ (GVar->hasLocalLinkage() || GVar->hasCommonLinkage())) {
+
+ if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
+
+ if (GVar->hasLocalLinkage())
+ O << "\t.local\t" << *GVarSym << '\n';
+
+ O << MAI->getCOMMDirective() << *GVarSym << ',' << Size;
+ if (MAI->getCOMMDirectiveTakesAlignment())
+ O << ',' << (MAI->getAlignmentIsInBytes() ? (1 << Align) : Align);
+
+ if (VerboseAsm) {
+ O << "\t\t" << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
+ }
+ O << '\n';
+ return;
+ }
+
+ switch (GVar->getLinkage()) {
+ case GlobalValue::CommonLinkage:
+ case GlobalValue::LinkOnceAnyLinkage:
+ case GlobalValue::LinkOnceODRLinkage:
+ case GlobalValue::WeakAnyLinkage:
+ case GlobalValue::WeakODRLinkage:
+ O << "\t.weak\t" << *GVarSym << '\n';
+ break;
+ case GlobalValue::DLLExportLinkage:
+ case GlobalValue::AppendingLinkage:
+ // FIXME: appending linkage variables should go into a section of
+ // their name or something. For now, just emit them as external.
+ case GlobalValue::ExternalLinkage:
+ // If external or appending, declare as a global symbol
+ O << "\t.globl " << *GVarSym << '\n';
+ // FALL THROUGH
+ case GlobalValue::PrivateLinkage:
+ case GlobalValue::LinkerPrivateLinkage:
+ case GlobalValue::InternalLinkage:
+ break;
+ default:
+ assert(0 && "Unknown linkage type!");
+ }
+
+ // Use 16-bit alignment by default to simplify bunch of stuff
+ EmitAlignment(Align, GVar, 1);
+ O << *GVarSym << ":";
+ if (VerboseAsm) {
+ O << "\t\t\t\t" << MAI->getCommentString() << ' ';
+ WriteAsOperand(O, GVar, /*PrintType=*/false, GVar->getParent());
+ }
+ O << '\n';
+ if (MAI->hasDotTypeDotSizeDirective())
+ O << "\t.size\t" << *GVarSym << ", " << Size << '\n';
+
+ EmitGlobalConstant(C);
+}
+
+// Force static initialization.
+extern "C" void LLVMInitializeSystemZAsmPrinter() {
+ RegisterAsmPrinter<SystemZAsmPrinter> X(TheSystemZTarget);
+}
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