Try harder to get a consistent floating point results.

[oota-llvm.git] / lib / CodeGen / SelectionDAG / ScheduleDAGSDNodes.cpp

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index 7eaf40c55404b3f779aeaf3d907a4fdc9e2dad36..054e3dd840b5b859633f076314a3c08214b374af 100644 (file)
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -735,7 +735,10 @@ ProcessSourceNode(SDNode *N, SelectionDAG *DAG, InstrEmitter &Emitter,
   }
 
   MachineBasicBlock *BB = Emitter.getBlock();
-  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI()) {
+  if (Emitter.getInsertPos() == BB->begin() || BB->back().isPHI() ||
+      // Fast-isel may have inserted some instructions, in which case the
+      // BB->back().isPHI() test will not fire when we want it to.
+      prior(Emitter.getInsertPos())->isPHI()) {
     // Did not insert any instruction.
     Orders.push_back(std::make_pair(Order, (MachineInstr*)0));
     return;