From 739572f069c8de50a62c1003233d063ae8cc57d8 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Sat, 12 May 2012 03:24:03 +0000
Subject: [PATCH] Remove MipsEmitGPRestore.cpp.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156696 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/CMakeLists.txt        |  1 -
 lib/Target/Mips/Mips.h                |  1 -
 lib/Target/Mips/MipsEmitGPRestore.cpp | 97 ---------------------------
 3 files changed, 99 deletions(-)
 delete mode 100644 lib/Target/Mips/MipsEmitGPRestore.cpp

diff --git a/lib/Target/Mips/CMakeLists.txt b/lib/Target/Mips/CMakeLists.txt
index 0500c5dc383..f2911a79460 100644
--- a/lib/Target/Mips/CMakeLists.txt
+++ b/lib/Target/Mips/CMakeLists.txt
@@ -17,7 +17,6 @@ add_llvm_target(MipsCodeGen
   MipsAsmPrinter.cpp
   MipsCodeEmitter.cpp
   MipsDelaySlotFiller.cpp
-  MipsEmitGPRestore.cpp
   MipsExpandPseudo.cpp
   MipsJITInfo.cpp
   MipsInstrInfo.cpp
diff --git a/lib/Target/Mips/Mips.h b/lib/Target/Mips/Mips.h
index bafadc8f25f..fe75a218f2d 100644
--- a/lib/Target/Mips/Mips.h
+++ b/lib/Target/Mips/Mips.h
@@ -25,7 +25,6 @@ namespace llvm {
   FunctionPass *createMipsISelDag(MipsTargetMachine &TM);
   FunctionPass *createMipsDelaySlotFillerPass(MipsTargetMachine &TM);
   FunctionPass *createMipsExpandPseudoPass(MipsTargetMachine &TM);
-  FunctionPass *createMipsEmitGPRestorePass(MipsTargetMachine &TM);
 
   FunctionPass *createMipsJITCodeEmitterPass(MipsTargetMachine &TM,
                                              JITCodeEmitter &JCE);
diff --git a/lib/Target/Mips/MipsEmitGPRestore.cpp b/lib/Target/Mips/MipsEmitGPRestore.cpp
deleted file mode 100644
index 119d1a82468..00000000000
--- a/lib/Target/Mips/MipsEmitGPRestore.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-//===-- MipsEmitGPRestore.cpp - Emit GP Restore Instruction ---------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass emits instructions that restore $gp right
-// after jalr instructions.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "emit-gp-restore"
-
-#include "Mips.h"
-#include "MipsTargetMachine.h"
-#include "MipsMachineFunction.h"
-#include "llvm/CodeGen/MachineFunctionPass.h"
-#include "llvm/CodeGen/MachineInstrBuilder.h"
-#include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/ADT/Statistic.h"
-
-using namespace llvm;
-
-namespace {
-  struct Inserter : public MachineFunctionPass {
-
-    TargetMachine &TM;
-    const TargetInstrInfo *TII;
-
-    static char ID;
-    Inserter(TargetMachine &tm)
-      : MachineFunctionPass(ID), TM(tm), TII(tm.getInstrInfo()) { }
-
-    virtual const char *getPassName() const {
-      return "Mips Emit GP Restore";
-    }
-
-    bool runOnMachineFunction(MachineFunction &F);
-  };
-  char Inserter::ID = 0;
-} // end of anonymous namespace
-
-bool Inserter::runOnMachineFunction(MachineFunction &F) {
-  MipsFunctionInfo *MipsFI = F.getInfo<MipsFunctionInfo>();
-
-  if ((TM.getRelocationModel() != Reloc::PIC_) ||
-      (!MipsFI->globalBaseRegFixed()))
-    return false;
-
-  bool Changed = false;
-  int FI = MipsFI->getGPFI();
-
-  for (MachineFunction::iterator MFI = F.begin(), MFE = F.end();
-       MFI != MFE; ++MFI) {
-    MachineBasicBlock& MBB = *MFI;
-    MachineBasicBlock::iterator I = MFI->begin();
-
-    // If MBB is a landing pad, insert instruction that restores $gp after
-    // EH_LABEL.
-    if (MBB.isLandingPad()) {
-      // Find EH_LABEL first.
-      for (; I->getOpcode() != TargetOpcode::EH_LABEL; ++I) ;
-
-      // Insert lw.
-      ++I;
-      DebugLoc dl = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
-      BuildMI(MBB, I, dl, TII->get(Mips::LW), Mips::GP).addFrameIndex(FI)
-                                                       .addImm(0);
-      Changed = true;
-    }
-
-    while (I != MFI->end()) {
-      if (I->getOpcode() != Mips::JALR) {
-        ++I;
-        continue;
-      }
-
-      DebugLoc dl = I->getDebugLoc();
-      // emit lw $gp, ($gp save slot on stack) after jalr
-      BuildMI(MBB, ++I, dl, TII->get(Mips::LW), Mips::GP).addFrameIndex(FI)
-                                                         .addImm(0);
-      Changed = true;
-    }
-  }
-
-  return Changed;
-}
-
-/// createMipsEmitGPRestorePass - Returns a pass that emits instructions that
-/// restores $gp clobbered by jalr instructions.
-FunctionPass *llvm::createMipsEmitGPRestorePass(MipsTargetMachine &tm) {
-  return new Inserter(tm);
-}
-
-- 
2.34.1