[SLPVectorizer] Add an extra parameter to tryScheduleBundle function,…

… NFCI.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308081 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/Vectorize/SLPVectorizer.cpp

@@ -857,7 +857,7 @@ class BoUpSLP {
     /// Checks if a bundle of instructions can be scheduled, i.e. has no
     /// cyclic dependencies. This is only a dry-run, no instructions are
     /// actually moved at this stage.
-    bool tryScheduleBundle(ArrayRef<Value *> VL, BoUpSLP *SLP);
+    bool tryScheduleBundle(ArrayRef<Value *> VL, BoUpSLP *SLP, Value *OpValue);
 
     /// Un-bundles a group of instructions.
     void cancelScheduling(ArrayRef<Value *> VL, Value *OpValue);
@@ -1237,7 +1237,7 @@ void BoUpSLP::buildTree_rec(ArrayRef<Value *> VL, unsigned Depth,
   }
   BlockScheduling &BS = *BSRef.get();
 
-  if (!BS.tryScheduleBundle(VL, this)) {
+  if (!BS.tryScheduleBundle(VL, this, VL0)) {
     DEBUG(dbgs() << "SLP: We are not able to schedule this bundle!\n");
     assert((!BS.getScheduleData(VL[0]) ||
             !BS.getScheduleData(VL[0])->isPartOfBundle()) &&
@@ -3097,16 +3097,16 @@ void BoUpSLP::optimizeGatherSequence() {
 // Groups the instructions to a bundle (which is then a single scheduling entity)
 // and schedules instructions until the bundle gets ready.
 bool BoUpSLP::BlockScheduling::tryScheduleBundle(ArrayRef<Value *> VL,
-                                                 BoUpSLP *SLP) {
-  if (isa<PHINode>(VL[0]))
+                                                 BoUpSLP *SLP, Value *OpValue) {
+  if (isa<PHINode>(OpValue))
     return true;
 
   // Initialize the instruction bundle.
   Instruction *OldScheduleEnd = ScheduleEnd;
   ScheduleData *PrevInBundle = nullptr;
   ScheduleData *Bundle = nullptr;
   bool ReSchedule = false;
-  DEBUG(dbgs() << "SLP:  bundle: " << *VL[0] << "\n");
+  DEBUG(dbgs() << "SLP:  bundle: " << *OpValue << "\n");
 
   // Make sure that the scheduling region contains all
   // instructions of the bundle.
@@ -3177,7 +3177,7 @@ bool BoUpSLP::BlockScheduling::tryScheduleBundle(ArrayRef<Value *> VL,
     }
   }
   if (!Bundle->isReady()) {
-    cancelScheduling(VL, VL[0]);
+    cancelScheduling(VL, OpValue);
     return false;
   }
   return true;