[mips] Remove incorrect DebugLoc entries from prologue

This has been causing the prologue_end to be incorrectly positioned.

Patch by Vladimir Radosavljevic.

Differential Revision: http://reviews.llvm.org/D11293

llvm-svn: 246309

3 files changed, 3 insertions, 4 deletions

diff --git a/llvm/lib/Target/Mips/MipsSEFrameLowering.cpp b/llvm/lib/Target/Mips/MipsSEFrameLowering.cpp
index 5b4608fad2b..a516e947975 100644
--- a/llvm/lib/Target/Mips/MipsSEFrameLowering.cpp
+++ b/llvm/lib/Target/Mips/MipsSEFrameLowering.cpp
@@ -376,7 +376,7 @@ void MipsSEFrameLowering::emitPrologue(MachineFunction &MF,
       *static_cast<const MipsRegisterInfo *>(STI.getRegisterInfo());
 
   MachineBasicBlock::iterator MBBI = MBB.begin();
-  DebugLoc dl = MBBI != MBB.end() ? MBBI->getDebugLoc() : DebugLoc();
+  DebugLoc dl;
   MipsABIInfo ABI = STI.getABI();
   unsigned SP = ABI.GetStackPtr();
   unsigned FP = ABI.GetFramePtr();
diff --git a/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp b/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp
index cb46d731da2..dff30c78bb5 100644
--- a/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp
+++ b/llvm/lib/Target/Mips/MipsSEISelDAGToDAG.cpp
@@ -131,7 +131,7 @@ void MipsSEDAGToDAGISel::initGlobalBaseReg(MachineFunction &MF) {
   MachineBasicBlock::iterator I = MBB.begin();
   MachineRegisterInfo &RegInfo = MF.getRegInfo();
   const TargetInstrInfo &TII = *Subtarget->getInstrInfo();
-  DebugLoc DL = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
+  DebugLoc DL;
   unsigned V0, V1, GlobalBaseReg = MipsFI->getGlobalBaseReg();
   const TargetRegisterClass *RC;
   const MipsABIInfo &ABI = static_cast<const MipsTargetMachine &>(TM).getABI();
diff --git a/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp b/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp
index 938285f2e51..d05f95fbd2b 100644
--- a/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp
+++ b/llvm/lib/Target/Mips/MipsSEInstrInfo.cpp
@@ -182,7 +182,6 @@ storeRegToStack(MachineBasicBlock &MBB, MachineBasicBlock::iterator I,
                 const TargetRegisterClass *RC, const TargetRegisterInfo *TRI,
                 int64_t Offset) const {
   DebugLoc DL;
-  if (I != MBB.end()) DL = I->getDebugLoc();
   MachineMemOperand *MMO = GetMemOperand(MBB, FI, MachineMemOperand::MOStore);
 
   unsigned Opc = 0;
@@ -360,7 +359,7 @@ void MipsSEInstrInfo::adjustStackPtr(unsigned SP, int64_t Amount,
                                      MachineBasicBlock &MBB,
                                      MachineBasicBlock::iterator I) const {
   MipsABIInfo ABI = Subtarget.getABI();
-  DebugLoc DL = I != MBB.end() ? I->getDebugLoc() : DebugLoc();
+  DebugLoc DL;
   unsigned ADDu = ABI.GetPtrAdduOp();
   unsigned ADDiu = ABI.GetPtrAddiuOp();