1 files changed, 0 insertions, 152 deletions

diff --git a/contrib/llvm/lib/Transforms/Utils/ASanStackFrameLayout.cpp b/contrib/llvm/lib/Transforms/Utils/ASanStackFrameLayout.cpp
deleted file mode 100644
index 01912297324a..000000000000
--- a/contrib/llvm/lib/Transforms/Utils/ASanStackFrameLayout.cpp
+++ /dev/null
@@ -1,152 +0,0 @@
-//===-- ASanStackFrameLayout.cpp - helper for AddressSanitizer ------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-//
-// Definition of ComputeASanStackFrameLayout (see ASanStackFrameLayout.h).
-//
-//===----------------------------------------------------------------------===//
-#include "llvm/Transforms/Utils/ASanStackFrameLayout.h"
-#include "llvm/ADT/SmallString.h"
-#include "llvm/IR/DebugInfo.h"
-#include "llvm/Support/MathExtras.h"
-#include "llvm/Support/ScopedPrinter.h"
-#include "llvm/Support/raw_ostream.h"
-#include <algorithm>
-
-namespace llvm {
-
-// We sort the stack variables by alignment (largest first) to minimize
-// unnecessary large gaps due to alignment.
-// It is tempting to also sort variables by size so that larger variables
-// have larger redzones at both ends. But reordering will make report analysis
-// harder, especially when temporary unnamed variables are present.
-// So, until we can provide more information (type, line number, etc)
-// for the stack variables we avoid reordering them too much.
-static inline bool CompareVars(const ASanStackVariableDescription &a,
-                               const ASanStackVariableDescription &b) {
-  return a.Alignment > b.Alignment;
-}
-
-// We also force minimal alignment for all vars to kMinAlignment so that vars
-// with e.g. alignment 1 and alignment 16 do not get reordered by CompareVars.
-static const size_t kMinAlignment = 16;
-
-// We want to add a full redzone after every variable.
-// The larger the variable Size the larger is the redzone.
-// The resulting frame size is a multiple of Alignment.
-static size_t VarAndRedzoneSize(size_t Size, size_t Granularity,
-                                size_t Alignment) {
-  size_t Res = 0;
-  if (Size <= 4)  Res = 16;
-  else if (Size <= 16) Res = 32;
-  else if (Size <= 128) Res = Size + 32;
-  else if (Size <= 512) Res = Size + 64;
-  else if (Size <= 4096) Res = Size + 128;
-  else                   Res = Size + 256;
-  return alignTo(std::max(Res, 2 * Granularity), Alignment);
-}
-
-ASanStackFrameLayout
-ComputeASanStackFrameLayout(SmallVectorImpl<ASanStackVariableDescription> &Vars,
-                            size_t Granularity, size_t MinHeaderSize) {
-  assert(Granularity >= 8 && Granularity <= 64 &&
-         (Granularity & (Granularity - 1)) == 0);
-  assert(MinHeaderSize >= 16 && (MinHeaderSize & (MinHeaderSize - 1)) == 0 &&
-         MinHeaderSize >= Granularity);
-  const size_t NumVars = Vars.size();
-  assert(NumVars > 0);
-  for (size_t i = 0; i < NumVars; i++)
-    Vars[i].Alignment = std::max(Vars[i].Alignment, kMinAlignment);
-
-  llvm::stable_sort(Vars, CompareVars);
-
-  ASanStackFrameLayout Layout;
-  Layout.Granularity = Granularity;
-  Layout.FrameAlignment = std::max(Granularity, Vars[0].Alignment);
-  size_t Offset = std::max(std::max(MinHeaderSize, Granularity),
-     Vars[0].Alignment);
-  assert((Offset % Granularity) == 0);
-  for (size_t i = 0; i < NumVars; i++) {
-    bool IsLast = i == NumVars - 1;
-    size_t Alignment = std::max(Granularity, Vars[i].Alignment);
-    (void)Alignment;  // Used only in asserts.
-    size_t Size = Vars[i].Size;
-    assert((Alignment & (Alignment - 1)) == 0);
-    assert(Layout.FrameAlignment >= Alignment);
-    assert((Offset % Alignment) == 0);
-    assert(Size > 0);
-    size_t NextAlignment = IsLast ? Granularity
-                   : std::max(Granularity, Vars[i + 1].Alignment);
-    size_t SizeWithRedzone = VarAndRedzoneSize(Size, Granularity,
-                                               NextAlignment);
-    Vars[i].Offset = Offset;
-    Offset += SizeWithRedzone;
-  }
-  if (Offset % MinHeaderSize) {
-    Offset += MinHeaderSize - (Offset % MinHeaderSize);
-  }
-  Layout.FrameSize = Offset;
-  assert((Layout.FrameSize % MinHeaderSize) == 0);
-  return Layout;
-}
-
-SmallString<64> ComputeASanStackFrameDescription(
-    const SmallVectorImpl<ASanStackVariableDescription> &Vars) {
-  SmallString<2048> StackDescriptionStorage;
-  raw_svector_ostream StackDescription(StackDescriptionStorage);
-  StackDescription << Vars.size();
-
-  for (const auto &Var : Vars) {
-    std::string Name = Var.Name;
-    if (Var.Line) {
-      Name += ":";
-      Name += to_string(Var.Line);
-    }
-    StackDescription << " " << Var.Offset << " " << Var.Size << " "
-                     << Name.size() << " " << Name;
-  }
-  return StackDescription.str();
-}
-
-SmallVector<uint8_t, 64>
-GetShadowBytes(const SmallVectorImpl<ASanStackVariableDescription> &Vars,
-               const ASanStackFrameLayout &Layout) {
-  assert(Vars.size() > 0);
-  SmallVector<uint8_t, 64> SB;
-  SB.clear();
-  const size_t Granularity = Layout.Granularity;
-  SB.resize(Vars[0].Offset / Granularity, kAsanStackLeftRedzoneMagic);
-  for (const auto &Var : Vars) {
-    SB.resize(Var.Offset / Granularity, kAsanStackMidRedzoneMagic);
-
-    SB.resize(SB.size() + Var.Size / Granularity, 0);
-    if (Var.Size % Granularity)
-      SB.push_back(Var.Size % Granularity);
-  }
-  SB.resize(Layout.FrameSize / Granularity, kAsanStackRightRedzoneMagic);
-  return SB;
-}
-
-SmallVector<uint8_t, 64> GetShadowBytesAfterScope(
-    const SmallVectorImpl<ASanStackVariableDescription> &Vars,
-    const ASanStackFrameLayout &Layout) {
-  SmallVector<uint8_t, 64> SB = GetShadowBytes(Vars, Layout);
-  const size_t Granularity = Layout.Granularity;
-
-  for (const auto &Var : Vars) {
-    assert(Var.LifetimeSize <= Var.Size);
-    const size_t LifetimeShadowSize =
-        (Var.LifetimeSize + Granularity - 1) / Granularity;
-    const size_t Offset = Var.Offset / Granularity;
-    std::fill(SB.begin() + Offset, SB.begin() + Offset + LifetimeShadowSize,
-              kAsanStackUseAfterScopeMagic);
-  }
-
-  return SB;
-}
-
-} // llvm namespace