atomicity.h (__compare_and_swap): Remove unused function.

[gcc.git] / libstdc++-v3 / config / cpu / arm / bits / atomicity.h

diff --git a/libstdc++-v3/config/cpu/arm/bits/atomicity.h b/libstdc++-v3/config/cpu/arm/bits/atomicity.h
index 4bc984c61690c3e1b21eeabb684bb9611374df24..2363edf7cdfe9b3c7662f62e1b6c07b54fcb2a9e 100644 (file)
--- a/libstdc++-v3/config/cpu/arm/bits/atomicity.h
+++ b/libstdc++-v3/config/cpu/arm/bits/atomicity.h
@@ -127,63 +127,6 @@ __atomic_add (volatile _Atomic_word *__mem, int __val)
 #endif
 }
 
-static inline int
-__attribute__ ((__unused__))
-__compare_and_swap (volatile long *__p, long __oldval, long __newval)
-{
-  int __result;
-  long __tmp;
-#ifdef __thumb__
-  /* Since this function is inlined, we can't be sure of the alignment.  */
-  __asm__ __volatile__ (
-       "ldr     %0, 4f \n\t"
-       "bx      %0 \n\t"
-       ".align 0 \n"
-       "4:\t"
-       ".word   0f \n\t"
-       ".code 32 \n"
-       "0:\t"
-       "ldr     %1, [%2] \n\t"
-        "mov     %0, #0 \n\t"
-        "cmp     %1, %4 \n\t"
-        "bne     1f \n\t"
-        "swp     %0, %3, [%2] \n\t"
-        "cmp     %1, %0 \n\t"
-        "swpne   %1, %0, [%2] \n\t"
-        "bne     0b \n\t"
-        "mov     %0, #1 \n"
-       "1:\t"
-       "ldr     %1, 2f \n\t"
-       "bx      %1 \n"
-       "2:\t"
-       ".word   3f \n\t"
-       ".code 16\n"
-       "3:\n"
-       : "=&l"(__result), "=&r"(__tmp) 
-       : "r" (__p), "r" (__newval), "r" (__oldval) 
-       : "cc", "memory");
-#else
-  __asm__ __volatile__ (
-       "\n"
-       "0:\t"
-       "ldr     %1, [%2] \n\t"
-       "mov     %0, #0 \n\t"
-       "cmp     %1, %4 \n\t"
-       "bne     1f \n\t"
-       "swp     %0, %3, [%2] \n\t"
-       "cmp     %1, %0 \n\t"
-       "swpne   %1, %0, [%2] \n\t"
-       "bne     0b \n\t"
-       "mov     %0, #1 \n"
-       "1:\n\t"
-       ""
-       : "=&r"(__result), "=&r"(__tmp) 
-       : "r" (__p), "r" (__newval), "r" (__oldval) 
-       : "cc", "memory");
-#endif
-  return __result;
-}
-
 static inline long
 __attribute__ ((__unused__))
 __always_swap (volatile long *__p, long __newval)