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eb66b33867
I did this a long time ago with a janky python script, but now clang-format has built-in support for this. I fed clang-format every line with a #include and let it re-sort things according to the precise LLVM rules for include ordering baked into clang-format these days. I've reverted a number of files where the results of sorting includes isn't healthy. Either places where we have legacy code relying on particular include ordering (where possible, I'll fix these separately) or where we have particular formatting around #include lines that I didn't want to disturb in this patch. This patch is *entirely* mechanical. If you get merge conflicts or anything, just ignore the changes in this patch and run clang-format over your #include lines in the files. Sorry for any noise here, but it is important to keep these things stable. I was seeing an increasing number of patches with irrelevant re-ordering of #include lines because clang-format was used. This patch at least isolates that churn, makes it easy to skip when resolving conflicts, and gets us to a clean baseline (again). llvm-svn: 304787
301 lines
10 KiB
C++
301 lines
10 KiB
C++
//===-- XCoreAsmPrinter.cpp - XCore LLVM assembly writer ------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains a printer that converts from our internal representation
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// of machine-dependent LLVM code to the XAS-format XCore assembly language.
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//
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//===----------------------------------------------------------------------===//
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#include "InstPrinter/XCoreInstPrinter.h"
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#include "XCore.h"
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#include "XCoreInstrInfo.h"
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#include "XCoreMCInstLower.h"
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#include "XCoreSubtarget.h"
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#include "XCoreTargetMachine.h"
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#include "XCoreTargetStreamer.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/StringExtras.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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#include "llvm/CodeGen/MachineJumpTableInfo.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DebugInfo.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/Mangler.h"
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#include "llvm/IR/Module.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/MC/MCExpr.h"
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#include "llvm/MC/MCInst.h"
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#include "llvm/MC/MCStreamer.h"
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#include "llvm/MC/MCSymbolELF.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Target/TargetLoweringObjectFile.h"
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#include <algorithm>
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#include <cctype>
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using namespace llvm;
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#define DEBUG_TYPE "asm-printer"
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namespace {
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class XCoreAsmPrinter : public AsmPrinter {
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XCoreMCInstLower MCInstLowering;
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XCoreTargetStreamer &getTargetStreamer();
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public:
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explicit XCoreAsmPrinter(TargetMachine &TM,
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std::unique_ptr<MCStreamer> Streamer)
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: AsmPrinter(TM, std::move(Streamer)), MCInstLowering(*this) {}
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StringRef getPassName() const override { return "XCore Assembly Printer"; }
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void printInlineJT(const MachineInstr *MI, int opNum, raw_ostream &O,
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const std::string &directive = ".jmptable");
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void printInlineJT32(const MachineInstr *MI, int opNum, raw_ostream &O) {
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printInlineJT(MI, opNum, O, ".jmptable32");
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}
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void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O) override;
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O) override;
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void emitArrayBound(MCSymbol *Sym, const GlobalVariable *GV);
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void EmitGlobalVariable(const GlobalVariable *GV) override;
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void EmitFunctionEntryLabel() override;
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void EmitInstruction(const MachineInstr *MI) override;
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void EmitFunctionBodyStart() override;
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void EmitFunctionBodyEnd() override;
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};
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} // end of anonymous namespace
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XCoreTargetStreamer &XCoreAsmPrinter::getTargetStreamer() {
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return static_cast<XCoreTargetStreamer&>(*OutStreamer->getTargetStreamer());
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}
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void XCoreAsmPrinter::emitArrayBound(MCSymbol *Sym, const GlobalVariable *GV) {
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assert( ( GV->hasExternalLinkage() || GV->hasWeakLinkage() ||
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GV->hasLinkOnceLinkage() || GV->hasCommonLinkage() ) &&
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"Unexpected linkage");
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if (ArrayType *ATy = dyn_cast<ArrayType>(GV->getValueType())) {
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MCSymbol *SymGlob = OutContext.getOrCreateSymbol(
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Twine(Sym->getName() + StringRef(".globound")));
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OutStreamer->EmitSymbolAttribute(SymGlob, MCSA_Global);
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OutStreamer->EmitAssignment(SymGlob,
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MCConstantExpr::create(ATy->getNumElements(),
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OutContext));
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if (GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
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GV->hasCommonLinkage()) {
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OutStreamer->EmitSymbolAttribute(SymGlob, MCSA_Weak);
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}
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}
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}
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void XCoreAsmPrinter::EmitGlobalVariable(const GlobalVariable *GV) {
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// Check to see if this is a special global used by LLVM, if so, emit it.
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if (!GV->hasInitializer() ||
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EmitSpecialLLVMGlobal(GV))
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return;
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const DataLayout &DL = getDataLayout();
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OutStreamer->SwitchSection(getObjFileLowering().SectionForGlobal(GV, TM));
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MCSymbol *GVSym = getSymbol(GV);
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const Constant *C = GV->getInitializer();
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unsigned Align = (unsigned)DL.getPreferredTypeAlignmentShift(C->getType());
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// Mark the start of the global
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getTargetStreamer().emitCCTopData(GVSym->getName());
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switch (GV->getLinkage()) {
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case GlobalValue::AppendingLinkage:
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report_fatal_error("AppendingLinkage is not supported by this target!");
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case GlobalValue::LinkOnceAnyLinkage:
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case GlobalValue::LinkOnceODRLinkage:
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case GlobalValue::WeakAnyLinkage:
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case GlobalValue::WeakODRLinkage:
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case GlobalValue::ExternalLinkage:
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case GlobalValue::CommonLinkage:
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emitArrayBound(GVSym, GV);
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OutStreamer->EmitSymbolAttribute(GVSym, MCSA_Global);
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if (GV->hasWeakLinkage() || GV->hasLinkOnceLinkage() ||
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GV->hasCommonLinkage())
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OutStreamer->EmitSymbolAttribute(GVSym, MCSA_Weak);
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LLVM_FALLTHROUGH;
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case GlobalValue::InternalLinkage:
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case GlobalValue::PrivateLinkage:
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break;
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default:
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llvm_unreachable("Unknown linkage type!");
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}
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EmitAlignment(Align > 2 ? Align : 2, GV);
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if (GV->isThreadLocal()) {
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report_fatal_error("TLS is not supported by this target!");
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}
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unsigned Size = DL.getTypeAllocSize(C->getType());
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if (MAI->hasDotTypeDotSizeDirective()) {
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OutStreamer->EmitSymbolAttribute(GVSym, MCSA_ELF_TypeObject);
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OutStreamer->emitELFSize(GVSym, MCConstantExpr::create(Size, OutContext));
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}
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OutStreamer->EmitLabel(GVSym);
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EmitGlobalConstant(DL, C);
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// The ABI requires that unsigned scalar types smaller than 32 bits
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// are padded to 32 bits.
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if (Size < 4)
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OutStreamer->EmitZeros(4 - Size);
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// Mark the end of the global
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getTargetStreamer().emitCCBottomData(GVSym->getName());
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}
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void XCoreAsmPrinter::EmitFunctionBodyStart() {
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MCInstLowering.Initialize(&MF->getContext());
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}
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/// EmitFunctionBodyEnd - Targets can override this to emit stuff after
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/// the last basic block in the function.
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void XCoreAsmPrinter::EmitFunctionBodyEnd() {
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// Emit function end directives
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getTargetStreamer().emitCCBottomFunction(CurrentFnSym->getName());
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}
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void XCoreAsmPrinter::EmitFunctionEntryLabel() {
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// Mark the start of the function
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getTargetStreamer().emitCCTopFunction(CurrentFnSym->getName());
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OutStreamer->EmitLabel(CurrentFnSym);
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}
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void XCoreAsmPrinter::
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printInlineJT(const MachineInstr *MI, int opNum, raw_ostream &O,
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const std::string &directive) {
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unsigned JTI = MI->getOperand(opNum).getIndex();
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const MachineFunction *MF = MI->getParent()->getParent();
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const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
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const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
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const std::vector<MachineBasicBlock*> &JTBBs = JT[JTI].MBBs;
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O << "\t" << directive << " ";
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for (unsigned i = 0, e = JTBBs.size(); i != e; ++i) {
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MachineBasicBlock *MBB = JTBBs[i];
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if (i > 0)
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O << ",";
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MBB->getSymbol()->print(O, MAI);
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}
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}
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void XCoreAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
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raw_ostream &O) {
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const DataLayout &DL = getDataLayout();
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const MachineOperand &MO = MI->getOperand(opNum);
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switch (MO.getType()) {
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case MachineOperand::MO_Register:
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O << XCoreInstPrinter::getRegisterName(MO.getReg());
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break;
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case MachineOperand::MO_Immediate:
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O << MO.getImm();
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break;
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case MachineOperand::MO_MachineBasicBlock:
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MO.getMBB()->getSymbol()->print(O, MAI);
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break;
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case MachineOperand::MO_GlobalAddress:
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getSymbol(MO.getGlobal())->print(O, MAI);
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break;
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case MachineOperand::MO_ConstantPoolIndex:
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O << DL.getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
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<< MO.getIndex();
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break;
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case MachineOperand::MO_BlockAddress:
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GetBlockAddressSymbol(MO.getBlockAddress())->print(O, MAI);
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break;
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default:
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llvm_unreachable("not implemented");
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}
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}
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/// PrintAsmOperand - Print out an operand for an inline asm expression.
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///
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bool XCoreAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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unsigned AsmVariant,const char *ExtraCode,
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raw_ostream &O) {
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// Print the operand if there is no operand modifier.
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if (!ExtraCode || !ExtraCode[0]) {
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printOperand(MI, OpNo, O);
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return false;
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}
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// Otherwise fallback on the default implementation.
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return AsmPrinter::PrintAsmOperand(MI, OpNo, AsmVariant, ExtraCode, O);
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}
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bool XCoreAsmPrinter::
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PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNum,
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unsigned AsmVariant, const char *ExtraCode,
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raw_ostream &O) {
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if (ExtraCode && ExtraCode[0]) {
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return true; // Unknown modifier.
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}
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printOperand(MI, OpNum, O);
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O << '[';
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printOperand(MI, OpNum + 1, O);
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O << ']';
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return false;
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}
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void XCoreAsmPrinter::EmitInstruction(const MachineInstr *MI) {
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SmallString<128> Str;
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raw_svector_ostream O(Str);
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switch (MI->getOpcode()) {
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case XCore::DBG_VALUE:
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llvm_unreachable("Should be handled target independently");
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case XCore::ADD_2rus:
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if (MI->getOperand(2).getImm() == 0) {
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O << "\tmov "
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<< XCoreInstPrinter::getRegisterName(MI->getOperand(0).getReg()) << ", "
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<< XCoreInstPrinter::getRegisterName(MI->getOperand(1).getReg());
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OutStreamer->EmitRawText(O.str());
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return;
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}
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break;
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case XCore::BR_JT:
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case XCore::BR_JT32:
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O << "\tbru "
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<< XCoreInstPrinter::getRegisterName(MI->getOperand(1).getReg()) << '\n';
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if (MI->getOpcode() == XCore::BR_JT)
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printInlineJT(MI, 0, O);
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else
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printInlineJT32(MI, 0, O);
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O << '\n';
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OutStreamer->EmitRawText(O.str());
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return;
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}
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MCInst TmpInst;
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MCInstLowering.Lower(MI, TmpInst);
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EmitToStreamer(*OutStreamer, TmpInst);
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}
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// Force static initialization.
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extern "C" void LLVMInitializeXCoreAsmPrinter() {
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RegisterAsmPrinter<XCoreAsmPrinter> X(getTheXCoreTarget());
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}
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