forked from OSchip/llvm-project
90 lines
3.5 KiB
C++
90 lines
3.5 KiB
C++
//===- MIParser.h - Machine Instructions Parser ---------------------------===//
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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 declares the function that parses the machine instructions.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_CODEGEN_MIRPARSER_MIPARSER_H
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#define LLVM_LIB_CODEGEN_MIRPARSER_MIPARSER_H
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#include "llvm/ADT/DenseMap.h"
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#include "llvm/ADT/StringRef.h"
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namespace llvm {
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class BasicBlock;
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class MachineBasicBlock;
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class MachineInstr;
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class MachineFunction;
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struct SlotMapping;
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class SMDiagnostic;
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class SourceMgr;
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struct PerFunctionMIParsingState {
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DenseMap<unsigned, MachineBasicBlock *> MBBSlots;
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DenseMap<unsigned, unsigned> VirtualRegisterSlots;
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DenseMap<unsigned, int> FixedStackObjectSlots;
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DenseMap<unsigned, int> StackObjectSlots;
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DenseMap<unsigned, unsigned> ConstantPoolSlots;
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DenseMap<unsigned, unsigned> JumpTableSlots;
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};
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/// Parse the machine basic block definitions, and skip the machine
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/// instructions.
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///
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/// This function runs the first parsing pass on the machine function's body.
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/// It parses only the machine basic block definitions and creates the machine
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/// basic blocks in the given machine function.
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///
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/// The machine instructions aren't parsed during the first pass because all
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/// the machine basic blocks aren't defined yet - this makes it impossible to
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/// resolve the machine basic block references.
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///
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/// Return true if an error occurred.
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bool parseMachineBasicBlockDefinitions(MachineFunction &MF, StringRef Src,
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PerFunctionMIParsingState &PFS,
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const SlotMapping &IRSlots,
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SMDiagnostic &Error);
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/// Parse the machine instructions.
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///
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/// This function runs the second parsing pass on the machine function's body.
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/// It skips the machine basic block definitions and parses only the machine
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/// instructions and basic block attributes like liveins and successors.
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///
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/// The second parsing pass assumes that the first parsing pass already ran
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/// on the given source string.
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///
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/// Return true if an error occurred.
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bool parseMachineInstructions(MachineFunction &MF, StringRef Src,
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const PerFunctionMIParsingState &PFS,
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const SlotMapping &IRSlots, SMDiagnostic &Error);
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bool parseMBBReference(MachineBasicBlock *&MBB, SourceMgr &SM,
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MachineFunction &MF, StringRef Src,
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const PerFunctionMIParsingState &PFS,
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const SlotMapping &IRSlots, SMDiagnostic &Error);
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bool parseNamedRegisterReference(unsigned &Reg, SourceMgr &SM,
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MachineFunction &MF, StringRef Src,
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const PerFunctionMIParsingState &PFS,
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const SlotMapping &IRSlots,
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SMDiagnostic &Error);
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bool parseVirtualRegisterReference(unsigned &Reg, SourceMgr &SM,
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MachineFunction &MF, StringRef Src,
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const PerFunctionMIParsingState &PFS,
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const SlotMapping &IRSlots,
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SMDiagnostic &Error);
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} // end namespace llvm
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#endif
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