atomicity.h (__compare_and_swap): Remove unused function.

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

diff --git a/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h b/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h
index 35a84f5f2a0372435e480a4af985a0107a489952..05addba57850a9096cc6d28de4ebf6dc5893ef3d 100644 (file)
--- a/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h
+++ b/libstdc++-v3/config/cpu/powerpc/bits/atomicity.h
@@ -69,28 +69,6 @@ __atomic_add (volatile _Atomic_word *__mem, int __val)
        : "cr0", "memory");
 }
 
-static inline int
-__attribute__ ((__unused__))
-__compare_and_swap (volatile long *__p, long int __oldval, long int __newval)
-{
-  int __res;
-  __asm__ __volatile__ (
-       "/* Inline compare & swap */\n"
-       "0:\t"
-       "lwarx    %0,0,%1  \n\t"
-       "sub%I2c. %0,%0,%2 \n\t"
-       "cntlzw   %0,%0 \n\t"
-       "bne-     1f \n\t"
-       "stwcx.   %3,0,%1 \n\t"
-       "bne-     0b \n"
-       "1:\n\t"
-       "/* End compare & swap */"
-       : "=&b"(__res)
-       : "r"(__p), "Ir"(__oldval), "r"(__newval)
-       : "cr0", "memory");
-  return __res >> 5;
-}
-
 static inline long
 __attribute__ ((__unused__))
 __always_swap (volatile long *__p, long int __newval)