[llvm] Use llvm::fill (NFC)

We can pass a range to llvm::fill.

Author: kazutakahirata

llvm/include/llvm/ADT/BitVector.h

@@ -795,9 +795,7 @@ class BitVector {
     set_unused_bits(false);
   }
 
-  void init_words(bool t) {
-    std::fill(Bits.begin(), Bits.end(), 0 - (BitWord)t);
-  }
+  void init_words(bool t) { llvm::fill(Bits, 0 - (BitWord)t); }
 
   template<bool AddBits, bool InvertMask>
   void applyMask(const uint32_t *Mask, unsigned MaskWords) {

llvm/lib/CodeGen/MachineLICM.cpp

@@ -400,7 +400,7 @@ bool MachineLICMImpl::run(MachineFunction &MF) {
     // Estimate register pressure during pre-regalloc pass.
     unsigned NumRPS = TRI->getNumRegPressureSets();
     RegPressure.resize(NumRPS);
-    std::fill(RegPressure.begin(), RegPressure.end(), 0);
+    llvm::fill(RegPressure, 0);
     RegLimit.resize(NumRPS);
     for (unsigned i = 0, e = NumRPS; i != e; ++i)
       RegLimit[i] = TRI->getRegPressureSetLimit(MF, i);
@@ -941,7 +941,7 @@ static bool isOperandKill(const MachineOperand &MO, MachineRegisterInfo *MRI) {
 /// initialize the starting "register pressure". Note this does not count live
 /// through (livein but not used) registers.
 void MachineLICMImpl::InitRegPressure(MachineBasicBlock *BB) {
-  std::fill(RegPressure.begin(), RegPressure.end(), 0);
+  llvm::fill(RegPressure, 0);
 
   // If the preheader has only a single predecessor and it ends with a
   // fallthrough or an unconditional branch, then scan its predecessor for live

llvm/lib/CodeGen/SelectionDAG/ResourcePriorityQueue.cpp

@@ -54,8 +54,8 @@ ResourcePriorityQueue::ResourcePriorityQueue(SelectionDAGISel *IS)
   unsigned NumRC = TRI->getNumRegClasses();
   RegLimit.resize(NumRC);
   RegPressure.resize(NumRC);
-  std::fill(RegLimit.begin(), RegLimit.end(), 0);
-  std::fill(RegPressure.begin(), RegPressure.end(), 0);
+  llvm::fill(RegLimit, 0);
+  llvm::fill(RegPressure, 0);
   for (const TargetRegisterClass *RC : TRI->regclasses())
     RegLimit[RC->getID()] = TRI->getRegPressureLimit(RC, *IS->MF);
 

llvm/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp

@@ -1769,8 +1769,8 @@ class RegReductionPQBase : public SchedulingPriorityQueue {
       unsigned NumRC = TRI->getNumRegClasses();
       RegLimit.resize(NumRC);
       RegPressure.resize(NumRC);
-      std::fill(RegLimit.begin(), RegLimit.end(), 0);
-      std::fill(RegPressure.begin(), RegPressure.end(), 0);
+      llvm::fill(RegLimit, 0);
+      llvm::fill(RegPressure, 0);
       for (const TargetRegisterClass *RC : TRI->regclasses())
         RegLimit[RC->getID()] = tri->getRegPressureLimit(RC, MF);
     }
@@ -1793,7 +1793,7 @@ class RegReductionPQBase : public SchedulingPriorityQueue {
   void releaseState() override {
     SUnits = nullptr;
     SethiUllmanNumbers.clear();
-    std::fill(RegPressure.begin(), RegPressure.end(), 0);
+    llvm::fill(RegPressure, 0);
   }
 
   unsigned getNodePriority(const SUnit *SU) const;

llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

@@ -1457,8 +1457,8 @@ void SelectionDAG::clear() {
   TargetExternalSymbols.clear();
   MCSymbols.clear();
   SDEI.clear();
-  std::fill(CondCodeNodes.begin(), CondCodeNodes.end(), nullptr);
-  std::fill(ValueTypeNodes.begin(), ValueTypeNodes.end(), nullptr);
+  llvm::fill(CondCodeNodes, nullptr);
+  llvm::fill(ValueTypeNodes, nullptr);
 
   EntryNode.UseList = nullptr;
   InsertNode(&EntryNode);

llvm/lib/Transforms/Scalar/LowerMatrixIntrinsics.cpp

@@ -2382,7 +2382,7 @@ class LowerMatrixIntrinsics {
       llvm::copy(C.vectors(), std::back_inserter(CondV));
     } else {
       CondV.resize(A.getNumVectors());
-      std::fill(CondV.begin(), CondV.end(), Cond);
+      llvm::fill(CondV, Cond);
     }
 
     for (auto [CV, AV, BV] : llvm::zip_equal(CondV, A.vectors(), B.vectors()))

llvm/lib/Transforms/Utils/LoopUtils.cpp

@@ -1171,7 +1171,7 @@ Value *llvm::getShuffleReduction(IRBuilderBase &Builder, Value *Src,
     SmallVector<int, 32> ShuffleMask(VF);
     for (unsigned stride = 1; stride < VF; stride <<= 1) {
       // Initialise the mask with undef.
-      std::fill(ShuffleMask.begin(), ShuffleMask.end(), -1);
+      llvm::fill(ShuffleMask, -1);
       for (unsigned j = 0; j < VF; j += stride << 1) {
         ShuffleMask[j] = j + stride;
       }

llvm/lib/Transforms/Vectorize/SLPVectorizer.cpp

@@ -5443,7 +5443,7 @@ BoUpSLP::findReusedOrderedScalars(const BoUpSLP::TreeEntry &TE,
       MutableArrayRef<unsigned> Slice = CurrentOrder.slice(I * PartSz, Limit);
       // Shuffle of at least 2 vectors - ignore.
       if (any_of(Slice, [&](unsigned I) { return I != NumScalars; })) {
-        std::fill(Slice.begin(), Slice.end(), NumScalars);
+        llvm::fill(Slice, NumScalars);
         ShuffledSubMasks.set(I);
         continue;
       }
@@ -5471,7 +5471,7 @@ BoUpSLP::findReusedOrderedScalars(const BoUpSLP::TreeEntry &TE,
       FirstMin = (FirstMin / PartSz) * PartSz;
       // Shuffle of at least 2 vectors - ignore.
       if (SecondVecFound) {
-        std::fill(Slice.begin(), Slice.end(), NumScalars);
+        llvm::fill(Slice, NumScalars);
         ShuffledSubMasks.set(I);
         continue;
       }
@@ -5492,7 +5492,7 @@ BoUpSLP::findReusedOrderedScalars(const BoUpSLP::TreeEntry &TE,
       }
       // Shuffle of at least 2 vectors - ignore.
       if (SecondVecFound) {
-        std::fill(Slice.begin(), Slice.end(), NumScalars);
+        llvm::fill(Slice, NumScalars);
         ShuffledSubMasks.set(I);
         continue;
       }

llvm/tools/llvm-mca/Views/RegisterFileStatistics.cpp

@@ -38,10 +38,10 @@ RegisterFileStatistics::RegisterFileStatistics(const MCSubtargetInfo &sti)
   unsigned NumRegFiles = std::max(PI.NumRegisterFiles, 1U);
 
   PRFUsage.resize(NumRegFiles);
-  std::fill(PRFUsage.begin(), PRFUsage.end(), RFUEmpty);
+  llvm::fill(PRFUsage, RFUEmpty);
 
   MoveElimInfo.resize(NumRegFiles);
-  std::fill(MoveElimInfo.begin(), MoveElimInfo.end(), MEIEmpty);
+  llvm::fill(MoveElimInfo, MEIEmpty);
 }
 
 void RegisterFileStatistics::updateRegisterFileUsage(

llvm/tools/llvm-mca/Views/TimelineView.cpp

@@ -28,14 +28,14 @@ TimelineView::TimelineView(const MCSubtargetInfo &sti, MCInstPrinter &Printer,
   NumInstructions *= Iterations;
   Timeline.resize(NumInstructions);
   TimelineViewEntry InvalidTVEntry = {-1, 0, 0, 0, 0};
-  std::fill(Timeline.begin(), Timeline.end(), InvalidTVEntry);
+  llvm::fill(Timeline, InvalidTVEntry);
 
   WaitTimeEntry NullWTEntry = {0, 0, 0};
-  std::fill(WaitTime.begin(), WaitTime.end(), NullWTEntry);
+  llvm::fill(WaitTime, NullWTEntry);
 
   std::pair<unsigned, int> NullUsedBufferEntry = {/* Invalid resource ID*/ 0,
                                                   /* unknown buffer size */ -1};
-  std::fill(UsedBuffer.begin(), UsedBuffer.end(), NullUsedBufferEntry);
+  llvm::fill(UsedBuffer, NullUsedBufferEntry);
 }
 
 void TimelineView::onReservedBuffers(const InstRef &IR,