MIR Parser: Extract the code that parses MBB references into a new method. NFC.

This commit extracts the code that's used by the class 'MIRParserImpl' to parse
the machine basic block references into a new method named 'parseMBBReference'.

llvm-svn: 243572

1 files changed, 18 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
index 7f2d4111023..1f433e03d1f 100644
--- a/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
+++ b/llvm/lib/CodeGen/MIRParser/MIRParser.cpp
@@ -127,6 +127,10 @@ public:
                                PerFunctionMIParsingState &PFS);
 
 private:
+  bool parseMBBReference(MachineBasicBlock *&MBB,
+                         const yaml::StringValue &Source, MachineFunction &MF,
+                         const PerFunctionMIParsingState &PFS);
+
   /// Return a MIR diagnostic converted from an MI string diagnostic.
   SMDiagnostic diagFromMIStringDiag(const SMDiagnostic &Error,
                                     SMRange SourceRange);
@@ -352,9 +356,8 @@ bool MIRParserImpl::initializeMachineBasicBlock(
   // Parse the successors.
   for (const auto &MBBSource : YamlMBB.Successors) {
     MachineBasicBlock *SuccMBB = nullptr;
-    if (parseMBBReference(SuccMBB, SM, MF, MBBSource.Value, PFS, IRSlots,
-                          Error))
-      return error(Error, MBBSource.SourceRange);
+    if (parseMBBReference(SuccMBB, MBBSource, MF, PFS))
+      return true;
     // TODO: Report an error when adding the same successor more than once.
     MBB.addSuccessor(SuccMBB);
   }
@@ -544,8 +547,8 @@ bool MIRParserImpl::initializeJumpTableInfo(
     std::vector<MachineBasicBlock *> Blocks;
     for (const auto &MBBSource : Entry.Blocks) {
       MachineBasicBlock *MBB = nullptr;
-      if (parseMBBReference(MBB, SM, MF, MBBSource.Value, PFS, IRSlots, Error))
-        return error(Error, MBBSource.SourceRange);
+      if (parseMBBReference(MBB, MBBSource.Value, MF, PFS))
+        return true;
       Blocks.push_back(MBB);
     }
     unsigned Index = JTI->createJumpTableIndex(Blocks);
@@ -555,6 +558,16 @@ bool MIRParserImpl::initializeJumpTableInfo(
   return false;
 }
 
+bool MIRParserImpl::parseMBBReference(MachineBasicBlock *&MBB,
+                                      const yaml::StringValue &Source,
+                                      MachineFunction &MF,
+                                      const PerFunctionMIParsingState &PFS) {
+  SMDiagnostic Error;
+  if (llvm::parseMBBReference(MBB, SM, MF, Source.Value, PFS, IRSlots, Error))
+    return error(Error, Source.SourceRange);
+  return false;
+}
+
 SMDiagnostic MIRParserImpl::diagFromMIStringDiag(const SMDiagnostic &Error,
                                                  SMRange SourceRange) {
   assert(SourceRange.isValid() && "Invalid source range");