[llvm-commits] [llvm] r91113 - /llvm/trunk/lib/CodeGen/MachineBasicBlock.cpp

[Bill Wendling]

Author: void
Date: Fri Dec 11 04:43:41 2009
New Revision: 91113

URL: http://llvm.org/viewvc/llvm-project?rev=91113&view=rev
Log:
Revert part of r91101 which was causing an infinite loop in the self-hosting
build bots.

Modified:
    llvm/trunk/lib/CodeGen/MachineBasicBlock.cpp

Modified: llvm/trunk/lib/CodeGen/MachineBasicBlock.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineBasicBlock.cpp?rev=91113&r1=91112&r2=91113&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/MachineBasicBlock.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineBasicBlock.cpp Fri Dec 11 04:43:41 2009
@@ -457,11 +457,16 @@
   SmallSet<const MachineBasicBlock*, 32> Visited;
   const MachineBasicBlock *CurMBB = MBB;
 
-  while (!CurMBB->isLandingPad()) {
-    if (CurMBB->succ_size() != 1)
+  while (!Visited.count(CurMBB) && !CurMBB->isLandingPad()) {
+    if (CurMBB->size() != 1 || CurMBB->succ_empty() || CurMBB->succ_size() != 1)
       break;
 
-    if (!Visited.insert(CurMBB)) break;
+    const TargetInstrInfo *TII =
+      CurMBB->getParent()->getTarget().getInstrInfo();
+    if (!TII->isUnpredicatedTerminator(CurMBB->begin()))
+      break;
+
+    Visited.insert(CurMBB);
     CurMBB = *CurMBB->succ_begin();
   }