Compiler.h revision 9c02a276049cbd1d1511a88ebc7a22bb33658237
10c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner//===-- llvm/Support/Compiler.h - Compiler abstraction support --*- C++ -*-===// 20c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// 30c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// The LLVM Compiler Infrastructure 40c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 70c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// 80c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner//===----------------------------------------------------------------------===// 90c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// 100c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// This file defines several macros, based on the current compiler. This allows 110c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// use of compiler-specific features in a way that remains portable. 120c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// 130c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner//===----------------------------------------------------------------------===// 140c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner 150c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#ifndef LLVM_SUPPORT_COMPILER_H 160c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#define LLVM_SUPPORT_COMPILER_H 170c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner 189c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov#include "llvm/Config/llvm-config.h" 19ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov 20965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#ifndef __has_feature 21965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer# define __has_feature(x) 0 22965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#endif 23965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer 244334dd96a9e622fdcf2825a8f73a2d941d67be72Chandler Carruth/// \brief Does the compiler support r-value references? 2538dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall/// This implies that <utility> provides the one-argument std::move; it 2638dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall/// does not imply the existence of any other C++ library features. 2738dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall#if (__has_feature(cxx_rvalue_references) \ 2838dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall || defined(__GXX_EXPERIMENTAL_CXX0X__) \ 29e20cf3d14997c3511e264748c59687a801caa6edBob Wilson || (defined(_MSC_VER) && _MSC_VER >= 1600)) 304334dd96a9e622fdcf2825a8f73a2d941d67be72Chandler Carruth#define LLVM_HAS_RVALUE_REFERENCES 1 3138dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall#else 324334dd96a9e622fdcf2825a8f73a2d941d67be72Chandler Carruth#define LLVM_HAS_RVALUE_REFERENCES 0 3338dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall#endif 3438dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall 35a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// \brief Does the compiler support r-value reference *this? 36a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// 37a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// Sadly, this is separate from just r-value reference support because GCC 38a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// implemented everything but this thus far. No release of GCC yet has support 39a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// for this feature so it is enabled with Clang only. 40a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// FIXME: This should change to a version check when GCC grows support for it. 41a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth#if __has_feature(cxx_rvalue_references) 42a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth#define LLVM_HAS_RVALUE_REFERENCE_THIS 1 43a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth#else 44a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth#define LLVM_HAS_RVALUE_REFERENCE_THIS 0 45a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth#endif 46a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth 4701812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// \macro LLVM_HAS_CXX11_TYPETRAITS 4801812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// \brief Does the compiler have the C++11 type traits. 4901812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// 5001812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// #include <type_traits> 5101812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// 5201812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// * enable_if 5301812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// * {true,false}_type 5401812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// * is_constructible 5501812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// * etc... 5601812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#if defined(__GXX_EXPERIMENTAL_CXX0X__) \ 57f3c437b167a98cbe47cace318989f1807b523cd5NAKAMURA Takumi || (defined(_MSC_VER) && _MSC_VER >= 1700) 5801812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#define LLVM_HAS_CXX11_TYPETRAITS 1 5901812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#else 6001812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#define LLVM_HAS_CXX11_TYPETRAITS 0 6101812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#endif 6201812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer 6301812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// \macro LLVM_HAS_CXX11_STDLIB 6401812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// \brief Does the compiler have the C++11 standard library. 6501812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// 6601812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer/// Implies LLVM_HAS_RVALUE_REFERENCES, LLVM_HAS_CXX11_TYPETRAITS 6701812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#if defined(__GXX_EXPERIMENTAL_CXX0X__) \ 68f3c437b167a98cbe47cace318989f1807b523cd5NAKAMURA Takumi || (defined(_MSC_VER) && _MSC_VER >= 1700) 6901812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#define LLVM_HAS_CXX11_STDLIB 1 7001812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#else 7101812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#define LLVM_HAS_CXX11_STDLIB 0 7201812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer#endif 7301812bebcc345b09ce261317b6fdefde8f097642Michael J. Spencer 7438dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall/// llvm_move - Expands to ::std::move if the compiler supports 7538dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall/// r-value references; otherwise, expands to the argument. 764334dd96a9e622fdcf2825a8f73a2d941d67be72Chandler Carruth#if LLVM_HAS_RVALUE_REFERENCES 7786062e6782798cb52a79fce22c1e4371148f120dJohn McCall#define llvm_move(value) (::std::move(value)) 7838dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall#else 7938dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall#define llvm_move(value) (value) 8038dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall#endif 8138dbb606755232e229f11994fc2bbf10e8c5788bJohn McCall 82adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose/// Expands to '&' if r-value references are supported. 83adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose/// 84adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose/// This can be used to provide l-value/r-value overrides of member functions. 85a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth/// The r-value override should be guarded by LLVM_HAS_RVALUE_REFERENCE_THIS 86a5bf44b0b396e8b9ae0db5c62c05ac6618aab5d3Chandler Carruth#if LLVM_HAS_RVALUE_REFERENCE_THIS 87adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose#define LLVM_LVALUE_FUNCTION & 88adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose#else 89adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose#define LLVM_LVALUE_FUNCTION 90adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose#endif 91adf0c3d82dbff1480c63f1ebe68c7c1e6bb5828cJordan Rose 92b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// LLVM_DELETED_FUNCTION - Expands to = delete if the compiler supports it. 93b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// Use to mark functions as uncallable. Member functions with this should 94cee033188f7b1a4f1b28b8edce0c1358f19f8158Craig Topper/// be declared private so that some behavior is kept in C++03 mode. 95b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// 96b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// class DontCopy { 97b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// private: 98b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// DontCopy(const DontCopy&) LLVM_DELETED_FUNCTION; 99b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// DontCopy &operator =(const DontCopy&) LLVM_DELETED_FUNCTION; 100b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// public: 101b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// ... 102b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer/// }; 103b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer#if (__has_feature(cxx_deleted_functions) \ 104b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer || defined(__GXX_EXPERIMENTAL_CXX0X__)) 105b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer // No version of MSVC currently supports this. 106b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer#define LLVM_DELETED_FUNCTION = delete 107b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer#else 108b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer#define LLVM_DELETED_FUNCTION 109b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer#endif 110b9d565ac998fc857b20786bae08bb30719eb966bMichael J. Spencer 111fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper/// LLVM_FINAL - Expands to 'final' if the compiler supports it. 112fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper/// Use to mark classes or virtual methods as final. 113235c022296c2dc225bf3b4dfd5c8f8631222e570Michael J. Spencer#if __has_feature(cxx_override_control) \ 114235c022296c2dc225bf3b4dfd5c8f8631222e570Michael J. Spencer || (defined(_MSC_VER) && _MSC_VER >= 1700) 115fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#define LLVM_FINAL final 116fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#else 117fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#define LLVM_FINAL 118fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#endif 119fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper 120fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper/// LLVM_OVERRIDE - Expands to 'override' if the compiler supports it. 121fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper/// Use to mark virtual methods as overriding a base class method. 122235c022296c2dc225bf3b4dfd5c8f8631222e570Michael J. Spencer#if __has_feature(cxx_override_control) \ 123235c022296c2dc225bf3b4dfd5c8f8631222e570Michael J. Spencer || (defined(_MSC_VER) && _MSC_VER >= 1700) 124fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#define LLVM_OVERRIDE override 125fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#else 126fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#define LLVM_OVERRIDE 127fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper#endif 128fbb13471ed99ab8fdc3dbadb091ee5e2295b7b26Craig Topper 129b5f8cd5bb04df52c05cbd1eddf081e6d9cf9cd64Michael J. Spencer#if __has_feature(cxx_constexpr) || defined(__GXX_EXPERIMENTAL_CXX0X__) 130b5f8cd5bb04df52c05cbd1eddf081e6d9cf9cd64Michael J. Spencer# define LLVM_CONSTEXPR constexpr 131b5f8cd5bb04df52c05cbd1eddf081e6d9cf9cd64Michael J. Spencer#else 132b5f8cd5bb04df52c05cbd1eddf081e6d9cf9cd64Michael J. Spencer# define LLVM_CONSTEXPR 133b5f8cd5bb04df52c05cbd1eddf081e6d9cf9cd64Michael J. Spencer#endif 134b5f8cd5bb04df52c05cbd1eddf081e6d9cf9cd64Michael J. Spencer 13516d8f8bd919b72866e687d99f3aa94a140137c59Duncan Sands/// LLVM_LIBRARY_VISIBILITY - If a class marked with this attribute is linked 13616d8f8bd919b72866e687d99f3aa94a140137c59Duncan Sands/// into a shared library, then the class should be private to the library and 13716d8f8bd919b72866e687d99f3aa94a140137c59Duncan Sands/// not accessible from outside it. Can also be used to mark variables and 13816d8f8bd919b72866e687d99f3aa94a140137c59Duncan Sands/// functions, making them private to any shared library they are linked into. 13997816e1badb4bf781d646986301e41ddea6f721cDuncan Sands#if (__GNUC__ >= 4) && !defined(__MINGW32__) && !defined(__CYGWIN__) 14016d8f8bd919b72866e687d99f3aa94a140137c59Duncan Sands#define LLVM_LIBRARY_VISIBILITY __attribute__ ((visibility("hidden"))) 1410c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#else 14216d8f8bd919b72866e687d99f3aa94a140137c59Duncan Sands#define LLVM_LIBRARY_VISIBILITY 1430c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#endif 1440c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner 145cb89f6cc10d63e61115a6acc4e2703fbd0823253Julien Lerouge#if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) 146100c267249d1d03c4f96eede9877a4f9f54f2247Chandler Carruth#define LLVM_ATTRIBUTE_USED __attribute__((__used__)) 1470d885d1661f87bd2dc25bfdacb29413f0be81bd4Devang Patel#else 148100c267249d1d03c4f96eede9877a4f9f54f2247Chandler Carruth#define LLVM_ATTRIBUTE_USED 1490d885d1661f87bd2dc25bfdacb29413f0be81bd4Devang Patel#endif 1500c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner 1517283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// Some compilers warn about unused functions. When a function is sometimes 1527283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// used or not depending on build settings (e.g. a function only called from 1537283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// within "assert"), this attribute can be used to suppress such warnings. 1547283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// 1557283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// However, it shouldn't be used for unused *variables*, as those have a much 1567283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// more portable solution: 1577283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// (void)unused_var_name; 1587283da51b8860ca9af4cb5ca082f7bcca3894d99Chandler Carruth// Prefer cast-to-void wherever it is sufficient. 159079b6f5ee5c3516b773a3ad71874c14e8ea7479cBill Wendling#if (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) 160100c267249d1d03c4f96eede9877a4f9f54f2247Chandler Carruth#define LLVM_ATTRIBUTE_UNUSED __attribute__((__unused__)) 161079b6f5ee5c3516b773a3ad71874c14e8ea7479cBill Wendling#else 162100c267249d1d03c4f96eede9877a4f9f54f2247Chandler Carruth#define LLVM_ATTRIBUTE_UNUSED 163079b6f5ee5c3516b773a3ad71874c14e8ea7479cBill Wendling#endif 164079b6f5ee5c3516b773a3ad71874c14e8ea7479cBill Wendling 16575c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#if (__GNUC__ >= 4) && !defined(__MINGW32__) && !defined(__CYGWIN__) 16675c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#define LLVM_ATTRIBUTE_WEAK __attribute__((__weak__)) 1676f0c67d4ffbc9c47153cab94985a22699b699729Chris Lattner#else 16875c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#define LLVM_ATTRIBUTE_WEAK 1696f0c67d4ffbc9c47153cab94985a22699b699729Chris Lattner#endif 1706f0c67d4ffbc9c47153cab94985a22699b699729Chris Lattner 17175c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#ifdef __GNUC__ // aka 'CONST' but following LLVM Conventions. 17275c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#define LLVM_READNONE __attribute__((__const__)) 1736f0c67d4ffbc9c47153cab94985a22699b699729Chris Lattner#else 17475c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#define LLVM_READNONE 1756f0c67d4ffbc9c47153cab94985a22699b699729Chris Lattner#endif 1766f0c67d4ffbc9c47153cab94985a22699b699729Chris Lattner 17775c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#ifdef __GNUC__ // aka 'PURE' but following LLVM Conventions. 17875c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#define LLVM_READONLY __attribute__((__pure__)) 179ec381a4183f70122305f810c6b11b8f0e3bf83c0Nick Lewycky#else 18075c0d8e0d8f4e10587985b950f2c0752e45e099eDaniel Dunbar#define LLVM_READONLY 181ec381a4183f70122305f810c6b11b8f0e3bf83c0Nick Lewycky#endif 182ec381a4183f70122305f810c6b11b8f0e3bf83c0Nick Lewycky 183ec381a4183f70122305f810c6b11b8f0e3bf83c0Nick Lewycky#if (__GNUC__ >= 4) 1844d69a8c8b2133e441503ac9583c4a6056f52e0f3Benjamin Kramer#define LLVM_LIKELY(EXPR) __builtin_expect((bool)(EXPR), true) 1854d69a8c8b2133e441503ac9583c4a6056f52e0f3Benjamin Kramer#define LLVM_UNLIKELY(EXPR) __builtin_expect((bool)(EXPR), false) 186b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2Daniel Dunbar#else 18755907d1274ce715b92d584e305e0708e333a33c0Benjamin Kramer#define LLVM_LIKELY(EXPR) (EXPR) 18855907d1274ce715b92d584e305e0708e333a33c0Benjamin Kramer#define LLVM_UNLIKELY(EXPR) (EXPR) 189b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2Daniel Dunbar#endif 190b372c1114c1eeffbd1a3f6ddc5d33e77564bfee2Daniel Dunbar 1910c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// C++ doesn't support 'extern template' of template specializations. GCC does, 1920c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// but requires __extension__ before it. In the header, use this: 1930c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// EXTERN_TEMPLATE_INSTANTIATION(class foo<bar>); 1940c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// in the .cpp file, use this: 1950c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner// TEMPLATE_INSTANTIATION(class foo<bar>); 1960c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#ifdef __GNUC__ 1970c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#define EXTERN_TEMPLATE_INSTANTIATION(X) __extension__ extern template X 1980c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#define TEMPLATE_INSTANTIATION(X) template X 1990c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#else 2000c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#define EXTERN_TEMPLATE_INSTANTIATION(X) 2010c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#define TEMPLATE_INSTANTIATION(X) 2020c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#endif 2030c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner 2047279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// LLVM_ATTRIBUTE_NOINLINE - On compilers where we have a directive to do so, 2057279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// mark a method "not for inlining". 2066f3241dbbf6926a1ad1d0e2f1e50e6228a55b258Chris Lattner#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) 20719e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_NOINLINE __attribute__((noinline)) 208f2a39bd24fe72481fa8fa612f3494efd41a8e001Benjamin Kramer#elif defined(_MSC_VER) 20919e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_NOINLINE __declspec(noinline) 2106f3241dbbf6926a1ad1d0e2f1e50e6228a55b258Chris Lattner#else 21119e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_NOINLINE 2126f3241dbbf6926a1ad1d0e2f1e50e6228a55b258Chris Lattner#endif 2136f3241dbbf6926a1ad1d0e2f1e50e6228a55b258Chris Lattner 2147279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// LLVM_ATTRIBUTE_ALWAYS_INLINE - On compilers where we have a directive to do 2157279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// so, mark a method "always inline" because it is performance sensitive. GCC 2167279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// 3.4 supported this but is buggy in various cases and produces unimplemented 2177279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// errors, just use it in GCC 4.0 and later. 21814c85cbf541ec8940127474c20d8f1b5d5706bfeChris Lattner#if __GNUC__ > 3 219428ff6a6445ac1a0d263776cb0301f77f1454286Galina Kistanova#define LLVM_ATTRIBUTE_ALWAYS_INLINE inline __attribute__((always_inline)) 220a0b991be3f2a15a8358d94c6b9773568ec74e8f0Michael J. Spencer#elif defined(_MSC_VER) 22119e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_ALWAYS_INLINE __forceinline 22296c7ae5e978750380360fcb3f6e47876be337c31Chris Lattner#else 22319e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_ALWAYS_INLINE 22496c7ae5e978750380360fcb3f6e47876be337c31Chris Lattner#endif 22596c7ae5e978750380360fcb3f6e47876be337c31Chris Lattner 22631e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin#ifdef __GNUC__ 22719e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_NORETURN __attribute__((noreturn)) 2287b068610eb68ae02c1c92a98d4a3749c7cb6456cBenjamin Kramer#elif defined(_MSC_VER) 22919e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_NORETURN __declspec(noreturn) 23031e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin#else 23119e57025d458d3cb50804fd821fd89b868a819bdChandler Carruth#define LLVM_ATTRIBUTE_NORETURN 23231e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin#endif 23331e2466f159a887fed9139067a676f65adf2a8c3Torok Edwin 2347279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// LLVM_EXTENSION - Support compilers where we have a keyword to suppress 2357279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// pedantic diagnostics. 2368f4a17214c75e8ce3f2f88a2e3cd3300faba5fc6Daniel Dunbar#ifdef __GNUC__ 2378f4a17214c75e8ce3f2f88a2e3cd3300faba5fc6Daniel Dunbar#define LLVM_EXTENSION __extension__ 2388f4a17214c75e8ce3f2f88a2e3cd3300faba5fc6Daniel Dunbar#else 2398f4a17214c75e8ce3f2f88a2e3cd3300faba5fc6Daniel Dunbar#define LLVM_EXTENSION 2408f4a17214c75e8ce3f2f88a2e3cd3300faba5fc6Daniel Dunbar#endif 2418f4a17214c75e8ce3f2f88a2e3cd3300faba5fc6Daniel Dunbar 242965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer// LLVM_ATTRIBUTE_DEPRECATED(decl, "message") 243965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#if __has_feature(attribute_deprecated_with_message) 244965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer# define LLVM_ATTRIBUTE_DEPRECATED(decl, message) \ 245965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer decl __attribute__((deprecated(message))) 246965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#elif defined(__GNUC__) 247965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer# define LLVM_ATTRIBUTE_DEPRECATED(decl, message) \ 248965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer decl __attribute__((deprecated)) 249965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#elif defined(_MSC_VER) 250965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer# define LLVM_ATTRIBUTE_DEPRECATED(decl, message) \ 251965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer __declspec(deprecated(message)) decl 252965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#else 253965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer# define LLVM_ATTRIBUTE_DEPRECATED(decl, message) \ 254965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer decl 255965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer#endif 256965841cfe4de695fc56cab4821fd7e032ff85b83Michael J. Spencer 2577279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// LLVM_BUILTIN_UNREACHABLE - On compilers which support it, expands 2587279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// to an expression which states that it is undefined behavior for the 2597279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// compiler to reach this point. Otherwise is not defined. 2602f9a9ed785416a7350f30141fcc405b69a1b9d5dJohn McCall#if defined(__clang__) || (__GNUC__ > 4) \ 2612f9a9ed785416a7350f30141fcc405b69a1b9d5dJohn McCall || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) 2622f9a9ed785416a7350f30141fcc405b69a1b9d5dJohn McCall# define LLVM_BUILTIN_UNREACHABLE __builtin_unreachable() 263c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer#elif defined(_MSC_VER) 264c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer# define LLVM_BUILTIN_UNREACHABLE __assume(false) 2652f9a9ed785416a7350f30141fcc405b69a1b9d5dJohn McCall#endif 2662f9a9ed785416a7350f30141fcc405b69a1b9d5dJohn McCall 2677279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// LLVM_BUILTIN_TRAP - On compilers which support it, expands to an expression 2687279809d97a7094f6b7c6eb83203dd6b56b00eccCraig Topper/// which causes the program to exit abnormally. 26974169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie#if defined(__clang__) || (__GNUC__ > 4) \ 27074169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) 27174169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie# define LLVM_BUILTIN_TRAP __builtin_trap() 27274169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie#else 27374169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie# define LLVM_BUILTIN_TRAP *(volatile int*)0x11 = 0 27474169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie#endif 27574169b293f2fc8767db3c659fde6b001b7d5075fDavid Blaikie 276c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer/// \macro LLVM_ASSUME_ALIGNED 277c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer/// \brief Returns a pointer with an assumed alignment. 27839227578242d96bc67e4ee1a408bfc0d83c6aa24Michael J. Spencer#if !defined(__clang__) && ((__GNUC__ > 4) \ 27939227578242d96bc67e4ee1a408bfc0d83c6aa24Michael J. Spencer || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)) 280c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer// FIXME: Enable on clang when it supports it. 281c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer# define LLVM_ASSUME_ALIGNED(p, a) __builtin_assume_aligned(p, a) 2821eae141f195b7edd060c2c872ea3eac4ce937262NAKAMURA Takumi#elif defined(LLVM_BUILTIN_UNREACHABLE) 283c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer# define LLVM_ASSUME_ALIGNED(p, a) \ 284c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer (((uintptr_t(p) % (a)) == 0) ? (p) : (LLVM_BUILTIN_UNREACHABLE, (p))) 2851eae141f195b7edd060c2c872ea3eac4ce937262NAKAMURA Takumi#else 2861eae141f195b7edd060c2c872ea3eac4ce937262NAKAMURA Takumi# define LLVM_ASSUME_ALIGNED(p, a) (p) 287c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer#endif 288c8b18df9a79ddb759d6a563dd7ebd90b85ae4918Michael J. Spencer 289caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko/// \macro LLVM_FUNCTION_NAME 290caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko/// \brief Expands to __func__ on compilers which support it. Otherwise, 291caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko/// expands to a compiler-dependent replacement. 292caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko#if defined(_MSC_VER) 293caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko# define LLVM_FUNCTION_NAME __FUNCTION__ 294caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko#else 295caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko# define LLVM_FUNCTION_NAME __func__ 296caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko#endif 297caa91f8b8562a18eb9b66916660f950be027fd9fDmitri Gribenko 2989c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov#if defined(LLVM_HAVE_MSAN_ANNOTATIONS) 299ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov# include <sanitizer/msan_interface.h> 300ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov#else 301ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov# define __msan_allocated_memory(p, size) 3029c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov# define __msan_unpoison(p, size) 303ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov#endif 304ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov 305ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov/// \macro LLVM_MEMORY_SANITIZER_BUILD 306ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov/// \brief Whether LLVM itself is built with MemorySanitizer instrumentation. 307ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov#if __has_feature(memory_sanitizer) 308ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov# define LLVM_MEMORY_SANITIZER_BUILD 1 309ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov#else 310ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov# define LLVM_MEMORY_SANITIZER_BUILD 0 311ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov#endif 312ea2d8780e9c78628fe5e3312ca4c17c054156c83Evgeniy Stepanov 3139c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov/// \macro LLVM_ADDRESS_SANITIZER_BUILD 3149c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov/// \brief Whether LLVM itself is built with AddressSanitizer instrumentation. 3159c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__) 3169c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov# define LLVM_ADDRESS_SANITIZER_BUILD 1 3179c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov#else 3189c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov# define LLVM_ADDRESS_SANITIZER_BUILD 0 3199c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov#endif 3209c02a276049cbd1d1511a88ebc7a22bb33658237Evgeniy Stepanov 321d9d2f187759d0154574657c195068d367c338473Michael J. Spencer/// \macro LLVM_IS_UNALIGNED_ACCESS_FAST 322d9d2f187759d0154574657c195068d367c338473Michael J. Spencer/// \brief Is unaligned memory access fast on the host machine. 323d9d2f187759d0154574657c195068d367c338473Michael J. Spencer/// 324d9d2f187759d0154574657c195068d367c338473Michael J. Spencer/// Don't specialize on alignment for platforms where unaligned memory accesses 325d9d2f187759d0154574657c195068d367c338473Michael J. Spencer/// generates the same code as aligned memory accesses for common types. 326d9d2f187759d0154574657c195068d367c338473Michael J. Spencer#if defined(_M_AMD64) || defined(_M_IX86) || defined(__amd64) || \ 327d9d2f187759d0154574657c195068d367c338473Michael J. Spencer defined(__amd64__) || defined(__x86_64) || defined(__x86_64__) || \ 328d9d2f187759d0154574657c195068d367c338473Michael J. Spencer defined(_X86_) || defined(__i386) || defined(__i386__) 329d9d2f187759d0154574657c195068d367c338473Michael J. Spencer# define LLVM_IS_UNALIGNED_ACCESS_FAST 1 330d9d2f187759d0154574657c195068d367c338473Michael J. Spencer#else 331d9d2f187759d0154574657c195068d367c338473Michael J. Spencer# define LLVM_IS_UNALIGNED_ACCESS_FAST 0 332d9d2f187759d0154574657c195068d367c338473Michael J. Spencer#endif 333d9d2f187759d0154574657c195068d367c338473Michael J. Spencer 3340c0cc92762bdf34f26762eeaf66f6f8791428db5Chris Lattner#endif 335