Add support to model pipeline bypass / forwarding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115005 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PowerPC/PPCScheduleG4Plus.td b/lib/Target/PowerPC/PPCScheduleG4Plus.td
index 15056c0..00cac3c 100644
--- a/lib/Target/PowerPC/PPCScheduleG4Plus.td
+++ b/lib/Target/PowerPC/PPCScheduleG4Plus.td
@@ -15,7 +15,7 @@
 def IU4    : FuncUnit; // integer unit 4 (7450 simple)
 
 def G4PlusItineraries : ProcessorItineraries<
-  [IU1, IU2, IU3, IU4, BPU, SLU, FPU1, VFPU, VIU1, VIU2, VPU], [
+  [IU1, IU2, IU3, IU4, BPU, SLU, FPU1, VFPU, VIU1, VIU2, VPU], [], [
   InstrItinData<IntGeneral  , [InstrStage<1, [IU1, IU2, IU3, IU4]>]>,
   InstrItinData<IntCompare  , [InstrStage<1, [IU1, IU2, IU3, IU4]>]>,
   InstrItinData<IntDivW     , [InstrStage<23, [IU2]>]>,