--- boost/detail/sp_counted_base_gcc_ia64.hpp
+++ boost/detail/sp_counted_base_gcc_ia64.hpp
@@ -34,7 +34,7 @@
     // release barrier associated with it.  We choose release as it should be
     // cheaper.
     __asm__ ("fetchadd8.rel %0=[%2],1" :
-         "=r"(tmp), "=m"(*pw) :
+         "=r"(tmp), "+m"(*pw) :
          "r"(pw));
 }
 
@@ -47,7 +47,7 @@
     __asm__ ("     fetchadd8.rel %0=[%2],-1 ;; \n"
              "     cmp.eq        p7,p0=1,%0 ;; \n"
              "(p7) ld8.acq       %0=[%2]    " :
-             "=&r"(rv), "=m"(*pw) :
+             "=&r"(rv), "+m"(*pw) :
              "r"(pw) :
              "p7");
 
@@ -71,7 +71,7 @@
          "(p7) br.cond.spnt 0b                \n"
          "     mov          %0=%1             ;; \n"
          "1:" : 
-         "=&r"(rv), "=&r"(tmp), "=&r"(tmp2), "=m"(*pw) :
+         "=&r"(rv), "=&r"(tmp), "=&r"(tmp2), "+m"(*pw) :
          "r"(pw) :
          "ar.ccv", "p7");