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author | Jeffrey Yasskin <jyasskin@google.com> | 2009-10-22 20:10:20 +0000 |
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committer | Jeffrey Yasskin <jyasskin@google.com> | 2009-10-22 20:10:20 +0000 |
commit | e0a234029b1b65f21169536f4c45e83743ed3cfa (patch) | |
tree | 47c339af1f2fbc95bfa69c64488190662f759a32 /include/llvm/Support/type_traits.h | |
parent | 9d89df169027035bf692b3d397bb93cff7bdc860 (diff) | |
download | external_llvm-e0a234029b1b65f21169536f4c45e83743ed3cfa.zip external_llvm-e0a234029b1b65f21169536f4c45e83743ed3cfa.tar.gz external_llvm-e0a234029b1b65f21169536f4c45e83743ed3cfa.tar.bz2 |
Add a ValueMap<ValueOrSubclass*, T> type. ValueMap<Value*, T> is safe to use
even when keys get RAUWed and deleted during its lifetime. By default the keys
act like WeakVHs, but users can pass a third template parameter to configure
how updates work and whether to do anything beyond updating the map on each
action.
It's also possible to automatically acquire a lock around ValueMap updates
triggered by RAUWs and deletes, to support the ExecutionEngine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84890 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Support/type_traits.h')
-rw-r--r-- | include/llvm/Support/type_traits.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/llvm/Support/type_traits.h b/include/llvm/Support/type_traits.h index 5f799b8..cfaae4b 100644 --- a/include/llvm/Support/type_traits.h +++ b/include/llvm/Support/type_traits.h @@ -87,6 +87,15 @@ struct is_base_of { sizeof(char) == sizeof(dont_use::base_of_helper<Base>((Derived*)0)); }; +// remove_pointer - Metafunction to turn Foo* into Foo. Defined in +// C++0x [meta.trans.ptr]. +template <typename T> struct remove_pointer { typedef T type; }; +template <typename T> struct remove_pointer<T*> { typedef T type; }; +template <typename T> struct remove_pointer<T*const> { typedef T type; }; +template <typename T> struct remove_pointer<T*volatile> { typedef T type; }; +template <typename T> struct remove_pointer<T*const volatile> { + typedef T type; }; + } #endif |