From ba39f88d0ede1d889a9a564562422d9c9c5134a0 Mon Sep 17 00:00:00 2001
From: Rafael Espindola <rafael.espindola@gmail.com>
Date: Fri, 6 May 2011 15:22:26 +0000
Subject: [PATCH] More dead code elimination.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130985 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/CodeGen/AsmPrinter.h          |  2 -
 lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp | 71 ----------------------
 2 files changed, 73 deletions(-)

diff --git a/include/llvm/CodeGen/AsmPrinter.h b/include/llvm/CodeGen/AsmPrinter.h
index 58395ba9b4d..d9c4551b4e5 100644
--- a/include/llvm/CodeGen/AsmPrinter.h
+++ b/include/llvm/CodeGen/AsmPrinter.h
@@ -398,8 +398,6 @@ namespace llvm {
 
     /// EmitFrameMoves - Emit frame instructions to describe the layout of the
     /// frame.
-    void EmitFrameMoves(const std::vector<MachineMove> &Moves,
-                        MCSymbol *BaseLabel, bool isEH) const;
     void EmitCFIFrameMove(const MachineMove &Move) const;
     void EmitCFIFrameMoves(const std::vector<MachineMove> &Moves) const;
 
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
index 6d1708a2ce8..0e9fc261c60 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp
@@ -206,77 +206,6 @@ void AsmPrinter::EmitSectionOffset(const MCSymbol *Label,
 // Dwarf Lowering Routines
 //===----------------------------------------------------------------------===//
 
-
-/// EmitFrameMoves - Emit frame instructions to describe the layout of the
-/// frame.
-void AsmPrinter::EmitFrameMoves(const std::vector<MachineMove> &Moves,
-                                MCSymbol *BaseLabel, bool isEH) const {
-  const TargetRegisterInfo *RI = TM.getRegisterInfo();
-  
-  int stackGrowth = TM.getTargetData()->getPointerSize();
-  if (TM.getFrameLowering()->getStackGrowthDirection() !=
-      TargetFrameLowering::StackGrowsUp)
-    stackGrowth *= -1;
-  
-  for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
-    const MachineMove &Move = Moves[i];
-    MCSymbol *Label = Move.getLabel();
-    // Throw out move if the label is invalid.
-    if (Label && !Label->isDefined()) continue; // Not emitted, in dead code.
-    
-    const MachineLocation &Dst = Move.getDestination();
-    const MachineLocation &Src = Move.getSource();
-    
-    // Advance row if new location.
-    if (BaseLabel && Label) {
-      MCSymbol *ThisSym = Label;
-      if (ThisSym != BaseLabel) {
-        EmitCFAByte(dwarf::DW_CFA_advance_loc4);
-        EmitLabelDifference(ThisSym, BaseLabel, 4);
-        BaseLabel = ThisSym;
-      }
-    }
-    
-    // If advancing cfa.
-    if (Dst.isReg() && Dst.getReg() == MachineLocation::VirtualFP) {
-      assert(!Src.isReg() && "Machine move not supported yet.");
-      
-      if (Src.getReg() == MachineLocation::VirtualFP) {
-        EmitCFAByte(dwarf::DW_CFA_def_cfa_offset);
-      } else {
-        EmitCFAByte(dwarf::DW_CFA_def_cfa);
-        EmitULEB128(RI->getDwarfRegNum(Src.getReg(), isEH), "Register");
-      }
-      
-      EmitULEB128(-Src.getOffset(), "Offset");
-      continue;
-    }
-    
-    if (Src.isReg() && Src.getReg() == MachineLocation::VirtualFP) {
-      assert(Dst.isReg() && "Machine move not supported yet.");
-      EmitCFAByte(dwarf::DW_CFA_def_cfa_register);
-      EmitULEB128(RI->getDwarfRegNum(Dst.getReg(), isEH), "Register");
-      continue;
-    }
-    
-    unsigned Reg = RI->getDwarfRegNum(Src.getReg(), isEH);
-    int Offset = Dst.getOffset() / stackGrowth;
-    
-    if (Offset < 0) {
-      EmitCFAByte(dwarf::DW_CFA_offset_extended_sf);
-      EmitULEB128(Reg, "Reg");
-      EmitSLEB128(Offset, "Offset");
-    } else if (Reg < 64) {
-      EmitCFAByte(dwarf::DW_CFA_offset + Reg);
-      EmitULEB128(Offset, "Offset");
-    } else {
-      EmitCFAByte(dwarf::DW_CFA_offset_extended);
-      EmitULEB128(Reg, "Reg");
-      EmitULEB128(Offset, "Offset");
-    }
-  }
-}
-
 /// EmitFrameMoves - Emit a frame instruction.
 void AsmPrinter::EmitCFIFrameMove(const MachineMove &Move) const {
   const TargetRegisterInfo *RI = TM.getRegisterInfo();
-- 
2.34.1