Add ChangeTo* to MachineOperand for symbols

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236612 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineOperand.h

@@ -554,6 +554,12 @@ public:
   /// already, the setFPImm method should be used.
   void ChangeToFPImmediate(const ConstantFP *FPImm);
 
+  /// ChangeToES - Replace this operand with a new external symbol operand.
+  void ChangeToES(const char *SymName, unsigned char TargetFlags = 0);
+
+  /// ChangeToMCSymbol - Replace this operand with a new MC symbol operand.
+  void ChangeToMCSymbol(MCSymbol *Sym);
+
   /// ChangeToRegister - Replace this operand with a new register operand of
   /// the specified value.  If an operand is known to be an register already,
   /// the setReg method should be used.

lib/CodeGen/MachineInstr.cpp

@@ -141,6 +141,28 @@ void MachineOperand::ChangeToFPImmediate(const ConstantFP *FPImm) {
   Contents.CFP = FPImm;
 }
 
+void MachineOperand::ChangeToES(const char *SymName, unsigned char TargetFlags) {
+  assert((!isReg() || !isTied()) &&
+         "Cannot change a tied operand into an external symbol");
+
+  removeRegFromUses();
+
+  OpKind = MO_ExternalSymbol;
+  Contents.OffsetedInfo.Val.SymbolName = SymName;
+  setOffset(0); // Offset is always 0.
+  setTargetFlags(TargetFlags);
+}
+
+void MachineOperand::ChangeToMCSymbol(MCSymbol *Sym) {
+  assert((!isReg() || !isTied()) &&
+         "Cannot change a tied operand into an MCSymbol");
+
+  removeRegFromUses();
+
+  OpKind = MO_MCSymbol;
+  Contents.Sym = Sym;
+}
+
 /// ChangeToRegister - Replace this operand with a new register operand of
 /// the specified value.  If an operand is known to be an register already,
 /// the setReg method should be used.