1 files changed, 0 insertions, 270 deletions

diff --git a/contrib/llvm/lib/Support/SmallPtrSet.cpp b/contrib/llvm/lib/Support/SmallPtrSet.cpp
deleted file mode 100644
index f60464c8e756..000000000000
--- a/contrib/llvm/lib/Support/SmallPtrSet.cpp
+++ /dev/null
@@ -1,270 +0,0 @@
-//===- llvm/ADT/SmallPtrSet.cpp - 'Normally small' pointer set ------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the SmallPtrSet class.  See SmallPtrSet.h for an
-// overview of the algorithm.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/ADT/DenseMapInfo.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/ErrorHandling.h"
-#include <algorithm>
-#include <cassert>
-#include <cstdlib>
-
-using namespace llvm;
-
-void SmallPtrSetImplBase::shrink_and_clear() {
-  assert(!isSmall() && "Can't shrink a small set!");
-  free(CurArray);
-
-  // Reduce the number of buckets.
-  unsigned Size = size();
-  CurArraySize = Size > 16 ? 1 << (Log2_32_Ceil(Size) + 1) : 32;
-  NumNonEmpty = NumTombstones = 0;
-
-  // Install the new array.  Clear all the buckets to empty.
-  CurArray = (const void**)safe_malloc(sizeof(void*) * CurArraySize);
-
-  memset(CurArray, -1, CurArraySize*sizeof(void*));
-}
-
-std::pair<const void *const *, bool>
-SmallPtrSetImplBase::insert_imp_big(const void *Ptr) {
-  if (LLVM_UNLIKELY(size() * 4 >= CurArraySize * 3)) {
-    // If more than 3/4 of the array is full, grow.
-    Grow(CurArraySize < 64 ? 128 : CurArraySize * 2);
-  } else if (LLVM_UNLIKELY(CurArraySize - NumNonEmpty < CurArraySize / 8)) {
-    // If fewer of 1/8 of the array is empty (meaning that many are filled with
-    // tombstones), rehash.
-    Grow(CurArraySize);
-  }
-
-  // Okay, we know we have space.  Find a hash bucket.
-  const void **Bucket = const_cast<const void**>(FindBucketFor(Ptr));
-  if (*Bucket == Ptr)
-    return std::make_pair(Bucket, false); // Already inserted, good.
-
-  // Otherwise, insert it!
-  if (*Bucket == getTombstoneMarker())
-    --NumTombstones;
-  else
-    ++NumNonEmpty; // Track density.
-  *Bucket = Ptr;
-  incrementEpoch();
-  return std::make_pair(Bucket, true);
-}
-
-const void * const *SmallPtrSetImplBase::FindBucketFor(const void *Ptr) const {
-  unsigned Bucket = DenseMapInfo<void *>::getHashValue(Ptr) & (CurArraySize-1);
-  unsigned ArraySize = CurArraySize;
-  unsigned ProbeAmt = 1;
-  const void *const *Array = CurArray;
-  const void *const *Tombstone = nullptr;
-  while (true) {
-    // If we found an empty bucket, the pointer doesn't exist in the set.
-    // Return a tombstone if we've seen one so far, or the empty bucket if
-    // not.
-    if (LLVM_LIKELY(Array[Bucket] == getEmptyMarker()))
-      return Tombstone ? Tombstone : Array+Bucket;
-
-    // Found Ptr's bucket?
-    if (LLVM_LIKELY(Array[Bucket] == Ptr))
-      return Array+Bucket;
-
-    // If this is a tombstone, remember it.  If Ptr ends up not in the set, we
-    // prefer to return it than something that would require more probing.
-    if (Array[Bucket] == getTombstoneMarker() && !Tombstone)
-      Tombstone = Array+Bucket;  // Remember the first tombstone found.
-
-    // It's a hash collision or a tombstone. Reprobe.
-    Bucket = (Bucket + ProbeAmt++) & (ArraySize-1);
-  }
-}
-
-/// Grow - Allocate a larger backing store for the buckets and move it over.
-///
-void SmallPtrSetImplBase::Grow(unsigned NewSize) {
-  const void **OldBuckets = CurArray;
-  const void **OldEnd = EndPointer();
-  bool WasSmall = isSmall();
-
-  // Install the new array.  Clear all the buckets to empty.
-  const void **NewBuckets = (const void**) safe_malloc(sizeof(void*) * NewSize);
-
-  // Reset member only if memory was allocated successfully
-  CurArray = NewBuckets;
-  CurArraySize = NewSize;
-  memset(CurArray, -1, NewSize*sizeof(void*));
-
-  // Copy over all valid entries.
-  for (const void **BucketPtr = OldBuckets; BucketPtr != OldEnd; ++BucketPtr) {
-    // Copy over the element if it is valid.
-    const void *Elt = *BucketPtr;
-    if (Elt != getTombstoneMarker() && Elt != getEmptyMarker())
-      *const_cast<void**>(FindBucketFor(Elt)) = const_cast<void*>(Elt);
-  }
-
-  if (!WasSmall)
-    free(OldBuckets);
-  NumNonEmpty -= NumTombstones;
-  NumTombstones = 0;
-}
-
-SmallPtrSetImplBase::SmallPtrSetImplBase(const void **SmallStorage,
-                                         const SmallPtrSetImplBase &that) {
-  SmallArray = SmallStorage;
-
-  // If we're becoming small, prepare to insert into our stack space
-  if (that.isSmall()) {
-    CurArray = SmallArray;
-  // Otherwise, allocate new heap space (unless we were the same size)
-  } else {
-    CurArray = (const void**)safe_malloc(sizeof(void*) * that.CurArraySize);
-  }
-
-  // Copy over the that array.
-  CopyHelper(that);
-}
-
-SmallPtrSetImplBase::SmallPtrSetImplBase(const void **SmallStorage,
-                                         unsigned SmallSize,
-                                         SmallPtrSetImplBase &&that) {
-  SmallArray = SmallStorage;
-  MoveHelper(SmallSize, std::move(that));
-}
-
-void SmallPtrSetImplBase::CopyFrom(const SmallPtrSetImplBase &RHS) {
-  assert(&RHS != this && "Self-copy should be handled by the caller.");
-
-  if (isSmall() && RHS.isSmall())
-    assert(CurArraySize == RHS.CurArraySize &&
-           "Cannot assign sets with different small sizes");
-
-  // If we're becoming small, prepare to insert into our stack space
-  if (RHS.isSmall()) {
-    if (!isSmall())
-      free(CurArray);
-    CurArray = SmallArray;
-  // Otherwise, allocate new heap space (unless we were the same size)
-  } else if (CurArraySize != RHS.CurArraySize) {
-    if (isSmall())
-      CurArray = (const void**)safe_malloc(sizeof(void*) * RHS.CurArraySize);
-    else {
-      const void **T = (const void**)safe_realloc(CurArray,
-                                             sizeof(void*) * RHS.CurArraySize);
-      CurArray = T;
-    }
-  }
-
-  CopyHelper(RHS);
-}
-
-void SmallPtrSetImplBase::CopyHelper(const SmallPtrSetImplBase &RHS) {
-  // Copy over the new array size
-  CurArraySize = RHS.CurArraySize;
-
-  // Copy over the contents from the other set
-  std::copy(RHS.CurArray, RHS.EndPointer(), CurArray);
-
-  NumNonEmpty = RHS.NumNonEmpty;
-  NumTombstones = RHS.NumTombstones;
-}
-
-void SmallPtrSetImplBase::MoveFrom(unsigned SmallSize,
-                                   SmallPtrSetImplBase &&RHS) {
-  if (!isSmall())
-    free(CurArray);
-  MoveHelper(SmallSize, std::move(RHS));
-}
-
-void SmallPtrSetImplBase::MoveHelper(unsigned SmallSize,
-                                     SmallPtrSetImplBase &&RHS) {
-  assert(&RHS != this && "Self-move should be handled by the caller.");
-
-  if (RHS.isSmall()) {
-    // Copy a small RHS rather than moving.
-    CurArray = SmallArray;
-    std::copy(RHS.CurArray, RHS.CurArray + RHS.NumNonEmpty, CurArray);
-  } else {
-    CurArray = RHS.CurArray;
-    RHS.CurArray = RHS.SmallArray;
-  }
-
-  // Copy the rest of the trivial members.
-  CurArraySize = RHS.CurArraySize;
-  NumNonEmpty = RHS.NumNonEmpty;
-  NumTombstones = RHS.NumTombstones;
-
-  // Make the RHS small and empty.
-  RHS.CurArraySize = SmallSize;
-  assert(RHS.CurArray == RHS.SmallArray);
-  RHS.NumNonEmpty = 0;
-  RHS.NumTombstones = 0;
-}
-
-void SmallPtrSetImplBase::swap(SmallPtrSetImplBase &RHS) {
-  if (this == &RHS) return;
-
-  // We can only avoid copying elements if neither set is small.
-  if (!this->isSmall() && !RHS.isSmall()) {
-    std::swap(this->CurArray, RHS.CurArray);
-    std::swap(this->CurArraySize, RHS.CurArraySize);
-    std::swap(this->NumNonEmpty, RHS.NumNonEmpty);
-    std::swap(this->NumTombstones, RHS.NumTombstones);
-    return;
-  }
-
-  // FIXME: From here on we assume that both sets have the same small size.
-
-  // If only RHS is small, copy the small elements into LHS and move the pointer
-  // from LHS to RHS.
-  if (!this->isSmall() && RHS.isSmall()) {
-    assert(RHS.CurArray == RHS.SmallArray);
-    std::copy(RHS.CurArray, RHS.CurArray + RHS.NumNonEmpty, this->SmallArray);
-    std::swap(RHS.CurArraySize, this->CurArraySize);
-    std::swap(this->NumNonEmpty, RHS.NumNonEmpty);
-    std::swap(this->NumTombstones, RHS.NumTombstones);
-    RHS.CurArray = this->CurArray;
-    this->CurArray = this->SmallArray;
-    return;
-  }
-
-  // If only LHS is small, copy the small elements into RHS and move the pointer
-  // from RHS to LHS.
-  if (this->isSmall() && !RHS.isSmall()) {
-    assert(this->CurArray == this->SmallArray);
-    std::copy(this->CurArray, this->CurArray + this->NumNonEmpty,
-              RHS.SmallArray);
-    std::swap(RHS.CurArraySize, this->CurArraySize);
-    std::swap(RHS.NumNonEmpty, this->NumNonEmpty);
-    std::swap(RHS.NumTombstones, this->NumTombstones);
-    this->CurArray = RHS.CurArray;
-    RHS.CurArray = RHS.SmallArray;
-    return;
-  }
-
-  // Both a small, just swap the small elements.
-  assert(this->isSmall() && RHS.isSmall());
-  unsigned MinNonEmpty = std::min(this->NumNonEmpty, RHS.NumNonEmpty);
-  std::swap_ranges(this->SmallArray, this->SmallArray + MinNonEmpty,
-                   RHS.SmallArray);
-  if (this->NumNonEmpty > MinNonEmpty) {
-    std::copy(this->SmallArray + MinNonEmpty,
-              this->SmallArray + this->NumNonEmpty,
-              RHS.SmallArray + MinNonEmpty);
-  } else {
-    std::copy(RHS.SmallArray + MinNonEmpty, RHS.SmallArray + RHS.NumNonEmpty,
-              this->SmallArray + MinNonEmpty);
-  }
-  assert(this->CurArraySize == RHS.CurArraySize);
-  std::swap(this->NumNonEmpty, RHS.NumNonEmpty);
-  std::swap(this->NumTombstones, RHS.NumTombstones);
-}