OS | Architecture | Build Compiler | Version |
---|---|---|---|
Linux | x86 | g++ | 4.8 |
Linux | s390x | g++ | 4.8 |
Linux | ppc64le | XLC | 12.1 |
Linux | ppc64le | g++ | 4.8 |
AIX | ppc64 | XLC | 12.1 |
z/OS | s390x | XLC | v2r2 |
Windows | x86-64 | MSVC | 2010 (version 10) |
- Note: moving to gcc 7.3
- Note: moving to msvc 2017
- The C++ standard library is not fully implemented in XLC.
- The GC disallows linking against the C++ standard library. Header-only utilities are allowed, but likely unavailable.
- The compiler makes heavy use of the C++ standard library, and statically links the stdlib whenever possible.
- The C standard library is used everywhere. Where possible, prefer to use OMR's port and thread libraries.
- The C++ standard library requires exceptions in order to function reasonably.
- Don't use RAII types or std containers when exceptions are disabled.
- The Compiler and JitBuilder have exceptions enabled.
- All other components, including port, thread, and GC, have exceptions disabled.
- MSVC does not allow exception specifiers in code (eg
throw()
,noexcept
, when exceptions are disabled.
OMR is written in a pre-standardization dialect of C++11. The supported language and library features are set by the minimum compiler versions we support.
- Strongly-typed/scoped enums:
enum class
- Rvalue references and move semantics:
template <typename T> T Fn(T&& t);
(V2.0--MSVC 2010) - Static assertions:
static_assert
- auto-typed variables
auto i = 1;
(V1.0--MSVC 2010) - Trailing function return types:
auto f() -> int
- Declared type of an expression:
decltype(expr)
(V1.0--MSVC 2010) - Right angle brackets:
template <typename T = std::vector<int>>
- Delegating constructors:
MyStruct() : MyStruct(NULL) {}
- Extern templates
- Variadic macros:
#define m(p, ...)
,__VA_ARGS__
__func__
macrolong long
- Lambda expressions and closures:
[](int i) -> int { return i + 1; }
- Generalized attributes:
[[attribute]]
- Null pointer constant:
nullptr
- Alignment support:
alignas
,alignof
- Explicit conversion operators
- SFINAE (MSVC 2010)
- Generalized constant expressions:
constexpr
(MSVC 2010) - Initializer lists:
std::vector<int> v = { 1, 2, 3 };
(MSVC 2010) - Type and template aliases:
using MyAlias = MyType;
(MSVC 2010) - Variadic templates:
template <class... Ts>
,sizeof...
(MSVC 2010) - Defaulted and deleted functions (MSVC 2010, XLC 12.1)
- Range based for loops:
for (auto& x : container) { ... }
(MSVC 2010) - Non throwing exception specifier:
noexcept
(MSVC 2010) - Inline namespaces:
inline namespace inner {}
(MSVC 2010) - Inheriting constructors (MSVC 2010)
- Forward declarations for enums (MSVC 2010)
- Extensible literals:
12_km
(MSVC 2010) - Thread-local storage
- Standard Layout Types:
is_standard_layout<T>::value
- Extended friend declarations
- Unrestricted unions (MSVC 2010)
- Unicode string literals
- Extended integral types:
<cstdint>
(use<stdint.h>
instead) (XLC) - Raw string literals
- Universal character name literals
- New character types:
char16_t
,char32_t
(MSVC 2010) - Extended sizeof (sizeof nested structures) (XLC 12.1)
- ref qualifiers on member functions:
int my_member() &&;
(MSVC 2010)