Remove the MachineMove class.

It was just a less powerful and more confusing version of
MCCFIInstruction. A side effect is that, since MCCFIInstruction uses
dwarf register numbers, calls to getDwarfRegNum are pushed out, which
should allow further simplifications.

I left the MachineModuleInfo::addFrameMove interface unchanged since
this patch was already fairly big.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181680 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 6 insertions, 34 deletions

diff --git a/include/llvm/MC/MCAsmInfo.h b/include/llvm/MC/MCAsmInfo.h
index d020de3..72d325f 100644
--- a/include/llvm/MC/MCAsmInfo.h
+++ b/include/llvm/MC/MCAsmInfo.h
@@ -17,6 +17,7 @@
 #define LLVM_MC_MCASMINFO_H
 
 #include "llvm/MC/MCDirectives.h"
+#include "llvm/MC/MCDwarf.h"
 #include "llvm/MC/MachineLocation.h"
 #include <cassert>
 #include <vector>
@@ -332,7 +333,7 @@ namespace llvm {
 
     //===--- Prologue State ----------------------------------------------===//
 
-    std::vector<MachineMove> InitialFrameState;
+    std::vector<MCCFIInstruction> InitialFrameState;
 
   public:
     explicit MCAsmInfo();
@@ -567,11 +568,11 @@ namespace llvm {
       return DwarfRegNumForCFI;
     }
 
-    void addInitialFrameState(MCSymbol *label, const MachineLocation &D,
-                              const MachineLocation &S) {
-      InitialFrameState.push_back(MachineMove(label, D, S));
+    void addInitialFrameState(const MCCFIInstruction &Inst) {
+      InitialFrameState.push_back(Inst);
     }
-    const std::vector<MachineMove> &getInitialFrameState() const {
+
+    const std::vector<MCCFIInstruction> &getInitialFrameState() const {
       return InitialFrameState;
     }
   };
diff --git a/include/llvm/MC/MachineLocation.h b/include/llvm/MC/MachineLocation.h
index 83c8b72..c4a9660 100644
--- a/include/llvm/MC/MachineLocation.h
+++ b/include/llvm/MC/MachineLocation.h
@@ -10,11 +10,6 @@
 // frame.  Locations will be one of two forms; a register or an address formed
 // from a base address plus an offset.  Register indirection can be specified by
 // explicitly passing an offset to the constructor.
-//
-// The MachineMove class is used to represent abstract move operations in the
-// prolog/epilog of a compiled function.  A collection of these objects can be
-// used by a debug consumer to track the location of values when unwinding stack
-// frames.
 //===----------------------------------------------------------------------===//
 
 
@@ -74,30 +69,6 @@ public:
   void dump();
 #endif
 };
-
-/// MachineMove - This class represents the save or restore of a callee saved
-/// register that exception or debug info needs to know about.
-class MachineMove {
-private:
-  /// Label - Symbol for post-instruction address when result of move takes
-  /// effect.
-  MCSymbol *Label;
-
-  // Move to & from location.
-  MachineLocation Destination, Source;
-public:
-  MachineMove() : Label(0) {}
-
-  MachineMove(MCSymbol *label, const MachineLocation &D,
-              const MachineLocation &S)
-  : Label(label), Destination(D), Source(S) {}
-
-  // Accessors
-  MCSymbol *getLabel()                    const { return Label; }
-  const MachineLocation &getDestination() const { return Destination; }
-  const MachineLocation &getSource()      const { return Source; }
-};
-
 } // End llvm namespace
 
 #endif