Add missing function attributes to the pipe/endpoint functions for all architectures.

[pub/USBasp.git] / LUFA / Common / Common.h

diff --git a/LUFA/Common/Common.h b/LUFA/Common/Common.h
index 9d64403..6a9356b 100644 (file)
--- a/LUFA/Common/Common.h
+++ b/LUFA/Common/Common.h
@@ -232,6 +232,15 @@
                         *  assembly output in an unexpected manner on sections of code that are ordering-specific.
                         */
                        #define GCC_MEMORY_BARRIER()                __asm__ __volatile__("" ::: "memory");
+                       
+                       /** Evaluates to boolean true if the specified value can be determined at compile time to be a constant value
+                        *  when compiling under GCC.
+                        *
+                        *  \param[in] x  Value to check compile time constantness of.
+                        *
+                        *  \return Boolean true if the given value is known to be a compile time constant.
+                        */
+                       #define GCC_IS_COMPILE_CONST(x)             __builtin_constant_p(x)
 
                        #if !defined(ISR) || defined(__DOXYGEN__)
                                /** Macro for the definition of interrupt service routines, so that the compiler can insert the required
@@ -273,10 +282,11 @@
                         *
                         *  \param[in] Milliseconds  Number of milliseconds to delay
                         */
+                       static inline void Delay_MS(uint8_t Milliseconds) ATTR_ALWAYS_INLINE;
                        static inline void Delay_MS(uint8_t Milliseconds)
                        {
                                #if (ARCH == ARCH_AVR8)
-                               if (__builtin_constant_p(Milliseconds))
+                               if (GCC_IS_COMPILE_CONST(Milliseconds))
                                {
                                        _delay_ms(Milliseconds);
                                }