Add MCInstBuilder, a utility class to simplify MCInst creation similar to MachineInst...

[oota-llvm.git] / include / llvm / MC / MCDwarf.h

diff --git a/include/llvm/MC/MCDwarf.h b/include/llvm/MC/MCDwarf.h
index 34cc8e77f9d6942aff4d0c52512bcdda3c98d952..92e76121c0094093520a520c9adcaf8f665ff947 100644 (file)
--- a/include/llvm/MC/MCDwarf.h
+++ b/include/llvm/MC/MCDwarf.h
@@ -16,7 +16,6 @@
 #define LLVM_MC_MCDWARF_H
 
 #include "llvm/ADT/StringRef.h"
-#include "llvm/MC/MachineLocation.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Support/Dwarf.h"
 #include "llvm/Support/Compiler.h"
@@ -268,112 +267,113 @@ namespace llvm {
   public:
     enum OpType { OpSameValue, OpRememberState, OpRestoreState, OpOffset,
                   OpDefCfaRegister, OpDefCfaOffset, OpDefCfa, OpRelOffset,
-                  OpAdjustCfaOffset, OpEscape, OpRestore, OpUndefined };
+                  OpAdjustCfaOffset, OpEscape, OpRestore, OpUndefined,
+                  OpRegister };
   private:
     OpType Operation;
     MCSymbol *Label;
-    // Move to & from location.
-    MachineLocation Destination;
-    MachineLocation Source;
+    unsigned Register;
+    union {
+      int Offset;
+      unsigned Register2;
+    };
     std::vector<char> Values;
-    MCCFIInstruction(OpType Op, MCSymbol *L, const MachineLocation &D,
-                     const MachineLocation &S, StringRef V) :
-      Operation(Op), Label(L), Destination(D), Source(S),
+
+    MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R, int O, StringRef V) :
+      Operation(Op), Label(L), Register(R), Offset(O),
       Values(V.begin(), V.end()) {
+      assert(Op != OpRegister);
+    }
+
+    MCCFIInstruction(OpType Op, MCSymbol *L, unsigned R1, unsigned R2) :
+      Operation(Op), Label(L), Register(R1), Register2(R2) {
+      assert(Op == OpRegister);
     }
 
   public:
     static MCCFIInstruction
     createOffset(MCSymbol *L, unsigned Register, int Offset) {
-      MachineLocation Dest(Register, Offset);
-      MachineLocation Source(Register, Offset);
-      MCCFIInstruction Ret(OpOffset, L, Dest, Source, "");
-      return Ret;
+      return MCCFIInstruction(OpOffset, L, Register, Offset, "");
     }
 
     static MCCFIInstruction
     createDefCfaRegister(MCSymbol *L, unsigned Register) {
-      MachineLocation Dest(Register);
-      MachineLocation Source(MachineLocation::VirtualFP);
-      MCCFIInstruction Ret(OpDefCfaRegister, L, Dest, Source, "");
-      return Ret;
+      return MCCFIInstruction(OpDefCfaRegister, L, Register, 0, "");
     }
 
     static MCCFIInstruction createDefCfaOffset(MCSymbol *L, int Offset) {
-      MachineLocation Dest(MachineLocation::VirtualFP);
-      MachineLocation Source(MachineLocation::VirtualFP, -Offset);
-      MCCFIInstruction Ret(OpDefCfaOffset, L, Dest, Source, "");
-      return Ret;
+      return MCCFIInstruction(OpDefCfaOffset, L, 0, -Offset, "");
     }
 
     static MCCFIInstruction
     createDefCfa(MCSymbol *L, unsigned Register, int Offset) {
-      MachineLocation Dest(MachineLocation::VirtualFP);
-      MachineLocation Source(Register, -Offset);
-      MCCFIInstruction Ret(OpDefCfa, L, Dest, Source, "");
-      return Ret;
+      return MCCFIInstruction(OpDefCfa, L, Register, -Offset, "");
     }
 
     static MCCFIInstruction createUndefined(MCSymbol *L, unsigned Register) {
-      MachineLocation Dummy;
-      MachineLocation Dest(Register);
-      MCCFIInstruction Ret(OpUndefined, L, Dest, Dummy, "");
-      return Ret;
+      return MCCFIInstruction(OpUndefined, L, Register, 0, "");
     }
 
     static MCCFIInstruction createRestore(MCSymbol *L, unsigned Register) {
-      MachineLocation Dummy;
-      MachineLocation Dest(Register);
-      MCCFIInstruction Ret(OpRestore, L, Dest, Dummy, "");
-      return Ret;
+      return MCCFIInstruction(OpRestore, L, Register, 0, "");
     }
 
     static MCCFIInstruction createSameValue(MCSymbol *L, unsigned Register) {
-      MachineLocation Dummy;
-      MachineLocation Dest(Register);
-      MCCFIInstruction Ret(OpSameValue, L, Dest, Dummy, "");
-      return Ret;
+      return MCCFIInstruction(OpSameValue, L, Register, 0, "");
     }
 
     static MCCFIInstruction createRestoreState(MCSymbol *L) {
-      MachineLocation Dummy;
-      MCCFIInstruction Ret(OpRestoreState, L, Dummy, Dummy, "");
-      return Ret;
+      return MCCFIInstruction(OpRestoreState, L, 0, 0, "");
     }
 
     static MCCFIInstruction createRememberState(MCSymbol *L) {
-      MachineLocation Dummy;
-      MCCFIInstruction Ret(OpRememberState, L, Dummy, Dummy, "");
-      return Ret;
+      return MCCFIInstruction(OpRememberState, L, 0, 0, "");
     }
 
     static MCCFIInstruction
     createRelOffset(MCSymbol *L, unsigned Register, int Offset) {
-      MachineLocation Dest(Register, Offset);
-      MachineLocation Source(Register, Offset);
-      MCCFIInstruction Ret(OpRelOffset, L, Dest, Source, "");
-      return Ret;
+      return MCCFIInstruction(OpRelOffset, L, Register, Offset, "");
     }
 
     static MCCFIInstruction
     createAdjustCfaOffset(MCSymbol *L, int Adjustment) {
-      MachineLocation Dest(MachineLocation::VirtualFP);
-      MachineLocation Source(MachineLocation::VirtualFP, Adjustment);
-      MCCFIInstruction Ret(OpAdjustCfaOffset, L, Dest, Source, "");
-      return Ret;
+      return MCCFIInstruction(OpAdjustCfaOffset, L, 0, Adjustment, "");
     }
 
     static MCCFIInstruction createEscape(MCSymbol *L, StringRef Vals) {
-      MachineLocation Dummy;
-      MCCFIInstruction Ret(OpEscape, L, Dummy, Dummy, Vals);
-      return Ret;
+      return MCCFIInstruction(OpEscape, L, 0, 0, Vals);
+    }
+
+   static MCCFIInstruction
+   createRegister(MCSymbol *L, unsigned Register1, unsigned Register2) {
+      return MCCFIInstruction(OpRegister, L, Register1, Register2);
     }
 
     OpType getOperation() const { return Operation; }
     MCSymbol *getLabel() const { return Label; }
-    const MachineLocation &getDestination() const { return Destination; }
-    const MachineLocation &getSource() const { return Source; }
+
+    unsigned getRegister() const {
+      assert(Operation == OpDefCfa || Operation == OpOffset ||
+             Operation == OpRestore || Operation == OpUndefined ||
+             Operation == OpSameValue || Operation == OpDefCfaRegister ||
+             Operation == OpRelOffset || Operation == OpRegister);
+      return Register;
+    }
+
+    unsigned getRegister2() const {
+      assert(Operation == OpRegister);
+      return Register2;
+    }
+
+    int getOffset() const {
+      assert(Operation == OpDefCfa || Operation == OpOffset ||
+             Operation == OpRelOffset || Operation == OpDefCfaOffset ||
+             Operation == OpAdjustCfaOffset);
+      return Offset;
+    }
+
     const StringRef getValues() const {
+      assert(Operation == OpEscape);
       return StringRef(&Values[0], Values.size());
     }
   };