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Summary: In microMIPS, labels need to know whether they are on code or data. This is indicated with STO_MIPS_MICROMIPS and can be inferred by being followed by instructions. For empty basic blocks, we can ensure this by emitting the .insn directive after the label. Also, this fixes some failures in our out-of-tree microMIPS buildbots, for the exception handling regression tests under: SingleSource/Regression/C++/EH Reviewers: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D9530 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236815 91177308-0d34-0410-b5e6-96231b3b80d8
152 lines
5.5 KiB
C++
152 lines
5.5 KiB
C++
//===-- MipsAsmPrinter.h - Mips LLVM Assembly Printer ----------*- C++ -*--===//
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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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// Mips Assembly printer class.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
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#define LLVM_LIB_TARGET_MIPS_MIPSASMPRINTER_H
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#include "Mips16HardFloatInfo.h"
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#include "MipsMCInstLower.h"
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#include "MipsMachineFunction.h"
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#include "MipsSubtarget.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/Support/Compiler.h"
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#include "llvm/Target/TargetMachine.h"
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namespace llvm {
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class MCStreamer;
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class MachineInstr;
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class MachineBasicBlock;
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class MipsTargetStreamer;
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class Module;
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class raw_ostream;
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class LLVM_LIBRARY_VISIBILITY MipsAsmPrinter : public AsmPrinter {
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MipsTargetStreamer &getTargetStreamer() const;
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void EmitInstrWithMacroNoAT(const MachineInstr *MI);
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private:
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// tblgen'erated function.
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bool emitPseudoExpansionLowering(MCStreamer &OutStreamer,
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const MachineInstr *MI);
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// Emit PseudoReturn, PseudoReturn64, PseudoIndirectBranch,
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// and PseudoIndirectBranch64 as a JR, JR_MM, JALR, or JALR64 as appropriate
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// for the target.
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void emitPseudoIndirectBranch(MCStreamer &OutStreamer,
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const MachineInstr *MI);
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// lowerOperand - Convert a MachineOperand into the equivalent MCOperand.
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bool lowerOperand(const MachineOperand &MO, MCOperand &MCOp);
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/// MCP - Keep a pointer to constantpool entries of the current
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/// MachineFunction.
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const MachineConstantPool *MCP;
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/// InConstantPool - Maintain state when emitting a sequence of constant
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/// pool entries so we can properly mark them as data regions.
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bool InConstantPool;
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std::map<const char *, const llvm::Mips16HardFloatInfo::FuncSignature *>
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StubsNeeded;
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void emitInlineAsmStart() const override;
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void emitInlineAsmEnd(const MCSubtargetInfo &StartInfo,
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const MCSubtargetInfo *EndInfo) const override;
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void EmitJal(const MCSubtargetInfo &STI, MCSymbol *Symbol);
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void EmitInstrReg(const MCSubtargetInfo &STI, unsigned Opcode, unsigned Reg);
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void EmitInstrRegReg(const MCSubtargetInfo &STI, unsigned Opcode,
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unsigned Reg1, unsigned Reg2);
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void EmitInstrRegRegReg(const MCSubtargetInfo &STI, unsigned Opcode,
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unsigned Reg1, unsigned Reg2, unsigned Reg3);
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void EmitMovFPIntPair(const MCSubtargetInfo &STI, unsigned MovOpc,
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unsigned Reg1, unsigned Reg2, unsigned FPReg1,
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unsigned FPReg2, bool LE);
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void EmitSwapFPIntParams(const MCSubtargetInfo &STI,
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Mips16HardFloatInfo::FPParamVariant, bool LE,
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bool ToFP);
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void EmitSwapFPIntRetval(const MCSubtargetInfo &STI,
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Mips16HardFloatInfo::FPReturnVariant, bool LE);
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void EmitFPCallStub(const char *, const Mips16HardFloatInfo::FuncSignature *);
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void NaClAlignIndirectJumpTargets(MachineFunction &MF);
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bool isLongBranchPseudo(int Opcode) const;
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public:
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const MipsSubtarget *Subtarget;
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const MipsFunctionInfo *MipsFI;
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MipsMCInstLower MCInstLowering;
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explicit MipsAsmPrinter(TargetMachine &TM,
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std::unique_ptr<MCStreamer> Streamer)
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: AsmPrinter(TM, std::move(Streamer)), MCP(nullptr),
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InConstantPool(false), MCInstLowering(*this) {}
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const char *getPassName() const override {
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return "Mips Assembly Printer";
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}
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bool runOnMachineFunction(MachineFunction &MF) override;
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void EmitConstantPool() override {
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bool UsingConstantPools =
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(Subtarget->inMips16Mode() && Subtarget->useConstantIslands());
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if (!UsingConstantPools)
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AsmPrinter::EmitConstantPool();
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// we emit constant pools customly!
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}
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void EmitInstruction(const MachineInstr *MI) override;
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void printSavedRegsBitmask();
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void emitFrameDirective();
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const char *getCurrentABIString() const;
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void EmitFunctionEntryLabel() override;
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void EmitFunctionBodyStart() override;
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void EmitFunctionBodyEnd() override;
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void EmitBasicBlockEnd(const MachineBasicBlock &MBB) override;
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bool isBlockOnlyReachableByFallthrough(
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const MachineBasicBlock* MBB) const override;
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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 printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printUnsignedImm(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printUnsignedImm8(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printMemOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printMemOperandEA(const MachineInstr *MI, int opNum, raw_ostream &O);
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void printFCCOperand(const MachineInstr *MI, int opNum, raw_ostream &O,
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const char *Modifier = nullptr);
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void printRegisterList(const MachineInstr *MI, int opNum, raw_ostream &O);
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void EmitStartOfAsmFile(Module &M) override;
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void EmitEndOfAsmFile(Module &M) override;
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void PrintDebugValueComment(const MachineInstr *MI, raw_ostream &OS);
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};
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}
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#endif
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