From 43aed32e20cea35bbe74bc5a460fb8b3f6e930b1 Mon Sep 17 00:00:00 2001
From: Akira Hatanaka <ahatanaka@mips.com>
Date: Tue, 11 Oct 2011 00:37:28 +0000
Subject: [PATCH] Simplify and update functions storeRegToStackSlot and
 loadRegFromStackSlot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141613 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/Mips/MipsInstrInfo.cpp | 40 ++++++++++++++++++-------------
 lib/Target/Mips/MipsInstrInfo.h   |  1 +
 2 files changed, 24 insertions(+), 17 deletions(-)

diff --git a/lib/Target/Mips/MipsInstrInfo.cpp b/lib/Target/Mips/MipsInstrInfo.cpp
index b79b521a233..1c26683cb05 100644
--- a/lib/Target/Mips/MipsInstrInfo.cpp
+++ b/lib/Target/Mips/MipsInstrInfo.cpp
@@ -28,7 +28,8 @@ using namespace llvm;
 
 MipsInstrInfo::MipsInstrInfo(MipsTargetMachine &tm)
   : MipsGenInstrInfo(Mips::ADJCALLSTACKDOWN, Mips::ADJCALLSTACKUP),
-    TM(tm), RI(*TM.getSubtargetImpl(), *this) {}
+    TM(tm), IsN64(TM.getSubtarget<MipsSubtarget>().isABI_N64()),
+    RI(*TM.getSubtargetImpl(), *this) {}
 
 
 const MipsRegisterInfo &MipsInstrInfo::getRegisterInfo() const { 
@@ -160,19 +161,20 @@ storeRegToStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
                     const TargetRegisterInfo *TRI) const {
   DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
+  unsigned Opc = 0;
 
   if (RC == Mips::CPURegsRegisterClass)
-    BuildMI(MBB, I, DL, get(Mips::SW)).addReg(SrcReg, getKillRegState(isKill))
-                                      .addFrameIndex(FI).addImm(0);
+    Opc = IsN64 ? Mips::SW_P8 : Mips::SW;
+  else if (RC == Mips::CPU64RegsRegisterClass)
+    Opc = IsN64 ? Mips::SD_P8 : Mips::SD;
   else if (RC == Mips::FGR32RegisterClass)
-    BuildMI(MBB, I, DL, get(Mips::SWC1)).addReg(SrcReg, getKillRegState(isKill))
-                                        .addFrameIndex(FI).addImm(0);
-  else if (RC == Mips::AFGR64RegisterClass) {
-    BuildMI(MBB, I, DL, get(Mips::SDC1))
-      .addReg(SrcReg, getKillRegState(isKill))
-      .addFrameIndex(FI).addImm(0);
-  } else
-    llvm_unreachable("Register class not handled!");
+    Opc = Mips::SWC1;
+  else if (RC == Mips::AFGR64RegisterClass)
+    Opc = Mips::SDC1;
+
+  assert(Opc && "Register class not handled!");
+  BuildMI(MBB, I, DL, get(Opc)).addReg(SrcReg, getKillRegState(isKill))
+    .addFrameIndex(FI).addImm(0);
 }
 
 void MipsInstrInfo::
@@ -183,15 +185,19 @@ loadRegFromStackSlot(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
 {
   DebugLoc DL;
   if (I != MBB.end()) DL = I->getDebugLoc();
+  unsigned Opc = 0;
 
   if (RC == Mips::CPURegsRegisterClass)
-    BuildMI(MBB, I, DL, get(Mips::LW), DestReg).addFrameIndex(FI).addImm(0);
+    Opc = IsN64 ? Mips::LW_P8 : Mips::LW;
+  else if (RC == Mips::CPU64RegsRegisterClass)
+    Opc = IsN64 ? Mips::LD_P8 : Mips::LD;
   else if (RC == Mips::FGR32RegisterClass)
-    BuildMI(MBB, I, DL, get(Mips::LWC1), DestReg).addFrameIndex(FI).addImm(0);
-  else if (RC == Mips::AFGR64RegisterClass) {
-    BuildMI(MBB, I, DL, get(Mips::LDC1), DestReg).addFrameIndex(FI).addImm(0);
-  } else
-    llvm_unreachable("Register class not handled!");
+    Opc = Mips::LWC1;
+  else if (RC == Mips::AFGR64RegisterClass)
+    Opc = Mips::LDC1;
+
+  assert(Opc && "Register class not handled!");
+  BuildMI(MBB, I, DL, get(Opc), DestReg).addFrameIndex(FI).addImm(0);
 }
 
 MachineInstr*
diff --git a/lib/Target/Mips/MipsInstrInfo.h b/lib/Target/Mips/MipsInstrInfo.h
index 4405760cd05..271d2487ecf 100644
--- a/lib/Target/Mips/MipsInstrInfo.h
+++ b/lib/Target/Mips/MipsInstrInfo.h
@@ -112,6 +112,7 @@ namespace MipsII {
 
 class MipsInstrInfo : public MipsGenInstrInfo {
   MipsTargetMachine &TM;
+  bool IsN64;
   const MipsRegisterInfo RI;
 public:
   explicit MipsInstrInfo(MipsTargetMachine &TM);
-- 
2.34.1