MIR: Fix missing serialization for HasTailCall

llvm/include/llvm/CodeGen/MIRYamlMapping.h

@@ -564,6 +564,7 @@ struct MachineFrameInfo {
   bool HasOpaqueSPAdjustment = false;
   bool HasVAStart = false;
   bool HasMustTailInVarArgFunc = false;
+  bool HasTailCall = false;
   unsigned LocalFrameSize = 0;
   StringValue SavePoint;
   StringValue RestorePoint;
@@ -584,6 +585,7 @@ struct MachineFrameInfo {
            HasOpaqueSPAdjustment == Other.HasOpaqueSPAdjustment &&
            HasVAStart == Other.HasVAStart &&
            HasMustTailInVarArgFunc == Other.HasMustTailInVarArgFunc &&
+           HasTailCall == Other.HasTailCall &&
            LocalFrameSize == Other.LocalFrameSize &&
            SavePoint == Other.SavePoint && RestorePoint == Other.RestorePoint;
   }
@@ -610,6 +612,7 @@ template <> struct MappingTraits<MachineFrameInfo> {
     YamlIO.mapOptional("hasVAStart", MFI.HasVAStart, false);
     YamlIO.mapOptional("hasMustTailInVarArgFunc", MFI.HasMustTailInVarArgFunc,
                        false);
+    YamlIO.mapOptional("hasTailCall", MFI.HasTailCall, false);
     YamlIO.mapOptional("localFrameSize", MFI.LocalFrameSize, (unsigned)0);
     YamlIO.mapOptional("savePoint", MFI.SavePoint,
                        StringValue()); // Don't print it out when it's empty.

llvm/include/llvm/CodeGen/MachineFrameInfo.h

@@ -625,7 +625,7 @@ public:
 
   /// Returns true if the function contains a tail call.
   bool hasTailCall() const { return HasTailCall; }
-  void setHasTailCall() { HasTailCall = true; }
+  void setHasTailCall(bool V = true) { HasTailCall = V; }
 
   /// Computes the maximum size of a callframe and the AdjustsStack property.
   /// This only works for targets defining

llvm/lib/CodeGen/MIRParser/MIRParser.cpp

@@ -700,6 +700,7 @@ bool MIRParserImpl::initializeFrameInfo(PerFunctionMIParsingState &PFS,
   MFI.setHasOpaqueSPAdjustment(YamlMFI.HasOpaqueSPAdjustment);
   MFI.setHasVAStart(YamlMFI.HasVAStart);
   MFI.setHasMustTailInVarArgFunc(YamlMFI.HasMustTailInVarArgFunc);
+  MFI.setHasTailCall(YamlMFI.HasTailCall);
   MFI.setLocalFrameSize(YamlMFI.LocalFrameSize);
   if (!YamlMFI.SavePoint.Value.empty()) {
     MachineBasicBlock *MBB = nullptr;

llvm/lib/CodeGen/MIRPrinter.cpp

@@ -351,6 +351,7 @@ void MIRPrinter::convert(ModuleSlotTracker &MST,
   YamlMFI.HasOpaqueSPAdjustment = MFI.hasOpaqueSPAdjustment();
   YamlMFI.HasVAStart = MFI.hasVAStart();
   YamlMFI.HasMustTailInVarArgFunc = MFI.hasMustTailInVarArgFunc();
+  YamlMFI.HasTailCall = MFI.hasTailCall();
   YamlMFI.LocalFrameSize = MFI.getLocalFrameSize();
   if (MFI.getSavePoint()) {
     raw_string_ostream StrOS(YamlMFI.SavePoint.Value);

llvm/test/CodeGen/MIR/Generic/frame-info.mir

@@ -42,6 +42,7 @@ tracksRegLiveness: true
 # CHECK-NEXT: hasOpaqueSPAdjustment: false
 # CHECK-NEXT: hasVAStart: false
 # CHECK-NEXT: hasMustTailInVarArgFunc: false
+# CHECK-NEXT: hasTailCall: false
 # CHECK-NEXT: localFrameSize: 0
 # CHECK-NEXT: savePoint:       ''
 # CHECK-NEXT: restorePoint:    ''
@@ -73,6 +74,7 @@ tracksRegLiveness: true
 # CHECK-NEXT: hasOpaqueSPAdjustment: true
 # CHECK-NEXT: hasVAStart: true
 # CHECK-NEXT: hasMustTailInVarArgFunc: true
+# CHECK-NEXT: hasTailCall: true
 # CHECK: body
 frameInfo:
   isFrameAddressTaken: true
@@ -88,6 +90,7 @@ frameInfo:
   cvBytesOfCalleeSavedRegisters: 8
   hasOpaqueSPAdjustment: true
   hasVAStart:      true
+  hasTailCall:     true
   hasMustTailInVarArgFunc: true
   localFrameSize: 256
 body: |