Teach AnalyzeBranch, RemoveBranch and the branch

folder to be tolerant of debug info following the
branch(es) at the end of a block.

llvm-svn: 100168

1 files changed, 14 insertions, 1 deletions

diff --git a/llvm/lib/Target/CellSPU/SPUInstrInfo.cpp b/llvm/lib/Target/CellSPU/SPUInstrInfo.cpp
index 2306665e1a3..86825c81861 100644
--- a/llvm/lib/Target/CellSPU/SPUInstrInfo.cpp
+++ b/llvm/lib/Target/CellSPU/SPUInstrInfo.cpp
@@ -450,7 +450,15 @@ SPUInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
                             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() || !isUnpredicatedTerminator(--I))
+  if (I == MBB.begin())
+    return false;
+  --I;
+  while (I->isDebugValue()) {
+    if (I == MBB.begin())
+      return false;
+    --I;
+  }
+  if (!isUnpredicatedTerminator(I))
     return false;
 
   // Get the last instruction in the block.
@@ -513,6 +521,11 @@ SPUInstrInfo::RemoveBranch(MachineBasicBlock &MBB) const {
   if (I == MBB.begin())
     return 0;
   --I;
+  while (I->isDebugValue()) {
+    if (I == MBB.begin())
+      return 0;
+    --I;
+  }
   if (!isCondBranch(I) && !isUncondBranch(I))
     return 0;