1 files changed, 30 insertions, 8 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MIParser.h b/llvm/lib/CodeGen/MIRParser/MIParser.h
index 92698f6e6d1..03408991f7c 100644
--- a/llvm/lib/CodeGen/MIRParser/MIParser.h
+++ b/llvm/lib/CodeGen/MIRParser/MIParser.h
@@ -36,9 +36,36 @@ struct PerFunctionMIParsingState {
   DenseMap<unsigned, unsigned> JumpTableSlots;
 };
 
-bool parseMachineInstr(MachineInstr *&MI, SourceMgr &SM, MachineFunction &MF,
-                       StringRef Src, const PerFunctionMIParsingState &PFS,
-                       const SlotMapping &IRSlots, SMDiagnostic &Error);
+/// Parse the machine basic block definitions, and skip the machine
+/// instructions.
+///
+/// This function runs the first parsing pass on the machine function's body.
+/// It parses only the machine basic block definitions and creates the machine
+/// basic blocks in the given machine function.
+///
+/// The machine instructions aren't parsed during the first pass because all
+/// the machine basic blocks aren't defined yet - this makes it impossible to
+/// resolve the machine basic block references.
+///
+/// Return true if an error occurred.
+bool parseMachineBasicBlockDefinitions(MachineFunction &MF, StringRef Src,
+                                       PerFunctionMIParsingState &PFS,
+                                       const SlotMapping &IRSlots,
+                                       SMDiagnostic &Error);
+
+/// Parse the machine instructions.
+///
+/// This function runs the second parsing pass on the machine function's body.
+/// It skips the machine basic block definitions and parses only the machine
+/// instructions and basic block attributes like liveins and successors.
+///
+/// The second parsing pass assumes that the first parsing pass already ran
+/// on the given source string.
+///
+/// Return true if an error occurred.
+bool parseMachineInstructions(MachineFunction &MF, StringRef Src,
+                              const PerFunctionMIParsingState &PFS,
+                              const SlotMapping &IRSlots, SMDiagnostic &Error);
 
 bool parseMBBReference(MachineBasicBlock *&MBB, SourceMgr &SM,
                        MachineFunction &MF, StringRef Src,
@@ -57,11 +84,6 @@ bool parseVirtualRegisterReference(unsigned &Reg, SourceMgr &SM,
                                    const SlotMapping &IRSlots,
                                    SMDiagnostic &Error);
 
-bool parseIRBlockReference(const BasicBlock *&BB, SourceMgr &SM,
-                           MachineFunction &MF, StringRef Src,
-                           const PerFunctionMIParsingState &PFS,
-                           const SlotMapping &IRSlots, SMDiagnostic &Error);
-
 } // end namespace llvm
 
 #endif