diff -r f4f540f0461b -r 87ee44a01d68 src/share/vm/c1/c1_LIR.cpp
--- a/src/share/vm/c1/c1_LIR.cpp	Fri Jun 08 16:21:38 2018 +0800
+++ b/src/share/vm/c1/c1_LIR.cpp	Mon Jun 11 16:44:16 2018 +0800
@@ -1657,8 +1657,6 @@
   append(c);
 }
 
-
-#ifndef MIPS
 void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value,
                         LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
   append(new LIR_OpCompareAndSwap(lir_cas_long, addr, cmp_value, new_value, t1, t2, result));
@@ -1673,43 +1671,6 @@
                        LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
   append(new LIR_OpCompareAndSwap(lir_cas_int, addr, cmp_value, new_value, t1, t2, result));
 }
-#else
-void LIR_List::cas_long(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
-  // Compare and swap produces condition code "zero" if contents_of(addr) == cmp_value,
-  //   // implying successful swap of new_value into addr
-   append(new LIR_OpCompareAndSwap(lir_cas_long,
-                        addr,
-                        cmp_value,
-                        new_value,
-                        t1,
-                        t2,
-                        result));
-}
-
-void LIR_List::cas_obj(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
-  // Compare and swap produces condition code "zero" if contents_of(addr) == cmp_value,
-  //   // implying successful swap of new_value into addr
-    append(new LIR_OpCompareAndSwap(lir_cas_obj,
-                        addr,
-                        cmp_value,
-                        new_value,
-                        t1,
-                        t2,
-                        result));
-}
-
-void LIR_List::cas_int(LIR_Opr addr, LIR_Opr cmp_value, LIR_Opr new_value, LIR_Opr t1, LIR_Opr t2, LIR_Opr result) {
-  // Compare and swap produces condition code "zero" if contents_of(addr) == cmp_value,
-  //   // implying successful swap of new_value into addr
-    append(new LIR_OpCompareAndSwap(lir_cas_int,
-                        addr,
-                        cmp_value,
-                        new_value,
-                        t1,
-                        t2,
-                        result));
-}
-#endif
 
 
 #ifdef PRODUCT