Replace copy-pasted debug value skipping with MBB::getLastNonDebugInstr

[oota-llvm.git] / lib / Target / AArch64 / AArch64InstrInfo.cpp

diff --git a/lib/Target/AArch64/AArch64InstrInfo.cpp b/lib/Target/AArch64/AArch64InstrInfo.cpp
index 8d8864cfe65f721b0e7cd5127ff120845901f071..c0b3f2c60916369246ecfb0f6ae7b257d3cec40f 100644 (file)
--- a/lib/Target/AArch64/AArch64InstrInfo.cpp
+++ b/lib/Target/AArch64/AArch64InstrInfo.cpp
@@ -96,15 +96,10 @@ bool AArch64InstrInfo::AnalyzeBranch(MachineBasicBlock &MBB,
                                    SmallVectorImpl<MachineOperand> &Cond,
                                    bool AllowModify) const {
   // If the block has no terminators, it just falls into the block after it.
-  MachineBasicBlock::iterator I = MBB.end();
-  if (I == MBB.begin())
+  MachineBasicBlock::iterator I = MBB.getLastNonDebugInstr();
+  if (I == MBB.end())
     return false;
-  --I;
-  while (I->isDebugValue()) {
-    if (I == MBB.begin())
-      return false;
-    --I;
-  }
+
   if (!isUnpredicatedTerminator(I))
     return false;
 
@@ -224,15 +219,10 @@ bool AArch64InstrInfo::ReverseBranchCondition(
 }
 
 unsigned AArch64InstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
-  MachineBasicBlock::iterator I = MBB.end();
-  if (I == MBB.begin())
+  MachineBasicBlock::iterator I = MBB.getLastNonDebugInstr();
+  if (I == MBB.end())
     return 0;
-  --I;
-  while (I->isDebugValue()) {
-    if (I == MBB.begin())
-      return 0;
-    --I;
-  }
+
   if (!isUncondBranchOpcode(I->getOpcode()) &&
       !isCondBranchOpcode(I->getOpcode()))
     return 0;