diff options
Diffstat (limited to 'src/corelib/global/qcompilerdetection.h')
| -rw-r--r-- | src/corelib/global/qcompilerdetection.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/corelib/global/qcompilerdetection.h b/src/corelib/global/qcompilerdetection.h index f3f0302072..c9f59454b2 100644 --- a/src/corelib/global/qcompilerdetection.h +++ b/src/corelib/global/qcompilerdetection.h @@ -88,6 +88,8 @@ # define Q_NO_TEMPLATE_FRIENDS # define Q_ALIGNOF(type) __alignof(type) # define Q_DECL_ALIGN(n) __declspec(align(n)) +# define Q_ASSUME(expr) __assume(expr) +# define Q_UNREACHABLE() __assume(0) /* Intel C++ disguising as Visual C++: the `using' keyword avoids warnings */ # if defined(__INTEL_COMPILER) # define Q_CC_INTEL @@ -141,11 +143,17 @@ # if defined(__INTEL_COMPILER) /* Intel C++ also masquerades as GCC */ # define Q_CC_INTEL +# define Q_ASSUME(expr) __assume(expr) +# define Q_UNREACHABLE() __assume(0) # elif defined(__clang__) /* Clang also masquerades as GCC */ # define Q_CC_CLANG +# define Q_ASSUME(expr) if (expr){} else __builtin_unreachable() +# define Q_UNREACHABLE() __builtin_unreachable() # else /* Plain GCC */ +# define Q_ASSUME(expr) if (expr){} else __builtin_unreachable() +# define Q_UNREACHABLE() __builtin_unreachable() # endif # define Q_ALIGNOF(type) __alignof__(type) |