aboutsummaryrefslogtreecommitdiffstats
path: root/src/3rdparty/llvm/include/llvm/Support/PointerLikeTypeTraits.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/3rdparty/llvm/include/llvm/Support/PointerLikeTypeTraits.h')
-rw-r--r--src/3rdparty/llvm/include/llvm/Support/PointerLikeTypeTraits.h116
1 files changed, 0 insertions, 116 deletions
diff --git a/src/3rdparty/llvm/include/llvm/Support/PointerLikeTypeTraits.h b/src/3rdparty/llvm/include/llvm/Support/PointerLikeTypeTraits.h
deleted file mode 100644
index 794230d606..0000000000
--- a/src/3rdparty/llvm/include/llvm/Support/PointerLikeTypeTraits.h
+++ /dev/null
@@ -1,116 +0,0 @@
-//===- llvm/Support/PointerLikeTypeTraits.h - Pointer Traits ----*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the PointerLikeTypeTraits class. This allows data
-// structures to reason about pointers and other things that are pointer sized.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
-#define LLVM_SUPPORT_POINTERLIKETYPETRAITS_H
-
-#include "llvm/Support/DataTypes.h"
-#include <type_traits>
-
-namespace llvm {
-
-/// A traits type that is used to handle pointer types and things that are just
-/// wrappers for pointers as a uniform entity.
-template <typename T> struct PointerLikeTypeTraits;
-
-namespace detail {
-/// A tiny meta function to compute the log2 of a compile time constant.
-template <size_t N>
-struct ConstantLog2
- : std::integral_constant<size_t, ConstantLog2<N / 2>::value + 1> {};
-template <> struct ConstantLog2<1> : std::integral_constant<size_t, 0> {};
-
-// Provide a trait to check if T is pointer-like.
-template <typename T, typename U = void> struct HasPointerLikeTypeTraits {
- static const bool value = false;
-};
-
-// sizeof(T) is valid only for a complete T.
-template <typename T> struct HasPointerLikeTypeTraits<
- T, decltype((sizeof(PointerLikeTypeTraits<T>) + sizeof(T)), void())> {
- static const bool value = true;
-};
-
-template <typename T> struct IsPointerLike {
- static const bool value = HasPointerLikeTypeTraits<T>::value;
-};
-
-template <typename T> struct IsPointerLike<T *> {
- static const bool value = true;
-};
-} // namespace detail
-
-// Provide PointerLikeTypeTraits for non-cvr pointers.
-template <typename T> struct PointerLikeTypeTraits<T *> {
- static inline void *getAsVoidPointer(T *P) { return P; }
- static inline T *getFromVoidPointer(void *P) { return static_cast<T *>(P); }
-
- enum { NumLowBitsAvailable = detail::ConstantLog2<alignof(T)>::value };
-};
-
-template <> struct PointerLikeTypeTraits<void *> {
- static inline void *getAsVoidPointer(void *P) { return P; }
- static inline void *getFromVoidPointer(void *P) { return P; }
-
- /// Note, we assume here that void* is related to raw malloc'ed memory and
- /// that malloc returns objects at least 4-byte aligned. However, this may be
- /// wrong, or pointers may be from something other than malloc. In this case,
- /// you should specify a real typed pointer or avoid this template.
- ///
- /// All clients should use assertions to do a run-time check to ensure that
- /// this is actually true.
- enum { NumLowBitsAvailable = 2 };
-};
-
-// Provide PointerLikeTypeTraits for const things.
-template <typename T> struct PointerLikeTypeTraits<const T> {
- typedef PointerLikeTypeTraits<T> NonConst;
-
- static inline const void *getAsVoidPointer(const T P) {
- return NonConst::getAsVoidPointer(P);
- }
- static inline const T getFromVoidPointer(const void *P) {
- return NonConst::getFromVoidPointer(const_cast<void *>(P));
- }
- enum { NumLowBitsAvailable = NonConst::NumLowBitsAvailable };
-};
-
-// Provide PointerLikeTypeTraits for const pointers.
-template <typename T> struct PointerLikeTypeTraits<const T *> {
- typedef PointerLikeTypeTraits<T *> NonConst;
-
- static inline const void *getAsVoidPointer(const T *P) {
- return NonConst::getAsVoidPointer(const_cast<T *>(P));
- }
- static inline const T *getFromVoidPointer(const void *P) {
- return NonConst::getFromVoidPointer(const_cast<void *>(P));
- }
- enum { NumLowBitsAvailable = NonConst::NumLowBitsAvailable };
-};
-
-// Provide PointerLikeTypeTraits for uintptr_t.
-template <> struct PointerLikeTypeTraits<uintptr_t> {
- static inline void *getAsVoidPointer(uintptr_t P) {
- return reinterpret_cast<void *>(P);
- }
- static inline uintptr_t getFromVoidPointer(void *P) {
- return reinterpret_cast<uintptr_t>(P);
- }
- // No bits are available!
- enum { NumLowBitsAvailable = 0 };
-};
-
-} // end namespace llvm
-
-#endif