compnerd updated this revision to Diff 83489.
compnerd added a comment.
Rebase for r291329.
Repository:
rL LLVM
https://reviews.llvm.org/D28212
Files:
include/typeinfo
src/typeinfo.cpp
Index: src/typeinfo.cpp
===================================================================
--- src/typeinfo.cpp
+++ src/typeinfo.cpp
@@ -15,6 +15,47 @@
#include "typeinfo"
+#if defined(_LIBCPP_ABI_MICROSOFT)
+#include <string.h>
+
+const char* std::type_info::__name(const struct std::type_info::__data* __data)
+{
+ // TODO(compnerd) cache demangled &__data.__decorated_name[1]
+ return &__data->__decorated_name[1];
+}
+
+size_t std::type_info::__hash(const struct std::type_info::__data* __data)
+{
+#if defined(_WIN64)
+ static constexpr const size_t fnv_offset_basis = 14695981039346656037ull;
+ static constexpr const size_t fnv_prime = 10995116282110ull;
+#else
+ static constexpr const size_t fnv_offset_basis = 2166136261ull;
+ static constexpr const size_t fnv_prime = 16777619ull;
+#endif
+
+ size_t value = fnv_offset_basis;
+ for (const char *c = &__data->__decorated_name[1]; *c; ++c) {
+ value ^= static_cast<size_t>(static_cast<unsigned char>(*c));
+ value *= fnv_prime;
+ }
+
+#if defined(_WIN64)
+ value ^= value >> 32;
+#endif
+
+ return value;
+}
+
+int std::type_info::__compare(const struct std::type_info::__data* __lhs,
+ const struct std::type_info::__data* __rhs)
+{
+ if (__lhs == __rhs)
+ return 0;
+ return strcmp(&__lhs->__decorated_name[1], &__rhs->__decorated_name[1]);
+}
+#endif
+
#if defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)
std::type_info::~type_info()
{
Index: include/typeinfo
===================================================================
--- include/typeinfo
+++ include/typeinfo
@@ -69,11 +69,13 @@
#pragma GCC system_header
#endif
+#if !defined(_LIBCPP_ABI_MICROSOFT)
#if defined(_LIBCPP_NONUNIQUE_RTTI_BIT)
#define _LIBCPP_HAS_NONUNIQUE_TYPEINFO
#else
#define _LIBCPP_HAS_UNIQUE_TYPEINFO
#endif
+#endif
namespace std // purposefully not using versioning namespace
{
@@ -89,7 +91,21 @@
{ return __builtin_strcmp(name(), __arg.name()); }
#endif
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ mutable struct __data {
+ const char *__undecorated_name;
+ const char __decorated_name[1];
+ } __data;
+
+ static const char *__name(const struct type_info::__data *__data);
+ static size_t __hash(const struct type_info::__data *__data);
+ static int __compare(const struct type_info::__data* __lls,
+ const struct type_info::__data* __rhs);
+#endif
+
protected:
+#if defined(_LIBCPP_ABI_MICROSOFT)
+#else
#if defined(_LIBCPP_HAS_NONUNIQUE_TYPEINFO)
// A const char* with the non-unique RTTI bit possibly set.
uintptr_t __type_name;
@@ -102,10 +118,28 @@
_LIBCPP_INLINE_VISIBILITY
type_info(const char* __n) : __type_name(__n) {}
#endif
+#endif
public:
virtual ~type_info();
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ _LIBCPP_INLINE_VISIBILITY
+ const char *name() const _NOEXCEPT
+ { return __name(&__data); }
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool before(const type_info& __arg) const _NOEXCEPT
+ { return __compare(&__data, &__arg.__data) < 0; }
+
+ _LIBCPP_INLINE_VISIBILITY
+ size_t hash_code() const _NOEXCEPT
+ { return __hash(&__data); }
+
+ _LIBCPP_INLINE_VISIBILITY
+ bool operator==(const type_info& __arg) const _NOEXCEPT
+ { return __compare(&__data, &__arg.__data) == 0; }
+#else
#if defined(_LIBCPP_HAS_NONUNIQUE_TYPEINFO)
_LIBCPP_INLINE_VISIBILITY
const char* name() const _NOEXCEPT
@@ -162,6 +196,7 @@
bool operator==(const type_info& __arg) const _NOEXCEPT
{ return __type_name == __arg.__type_name; }
#endif
+#endif
_LIBCPP_INLINE_VISIBILITY
bool operator!=(const type_info& __arg) const _NOEXCEPT
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