diff -r ee5cc9e78493 -r d6f45b55c972 src/cpu/x86/vm/stubGenerator_x86_32.cpp
--- a/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Fri Aug 20 09:55:50 2010 -0700
+++ b/src/cpu/x86/vm/stubGenerator_x86_32.cpp	Fri Aug 27 17:33:49 2010 -0700
@@ -1039,6 +1039,33 @@
   }
 
 
+  address generate_fill(BasicType t, bool aligned, const char *name) {
+    __ align(CodeEntryAlignment);
+    StubCodeMark mark(this, "StubRoutines", name);
+    address start = __ pc();
+
+    BLOCK_COMMENT("Entry:");
+
+    const Register to       = rdi;  // source array address
+    const Register value    = rdx;  // value
+    const Register count    = rsi;  // elements count
+
+    __ enter(); // required for proper stackwalking of RuntimeStub frame
+    __ push(rsi);
+    __ push(rdi);
+    __ movptr(to   , Address(rsp, 12+ 4));
+    __ movl(value, Address(rsp, 12+ 8));
+    __ movl(count, Address(rsp, 12+ 12));
+
+    __ generate_fill(t, aligned, to, value, count, rax, xmm0);
+
+    __ pop(rdi);
+    __ pop(rsi);
+    __ leave(); // required for proper stackwalking of RuntimeStub frame
+    __ ret(0);
+    return start;
+  }
+
   address generate_conjoint_copy(BasicType t, bool aligned,
                                  Address::ScaleFactor sf,
                                  address nooverlap_target,
@@ -2001,6 +2028,13 @@
         generate_conjoint_long_copy(entry, &entry_jlong_arraycopy,
                                     "jlong_arraycopy");
 
+    StubRoutines::_jbyte_fill = generate_fill(T_BYTE, false, "jbyte_fill");
+    StubRoutines::_jshort_fill = generate_fill(T_SHORT, false, "jshort_fill");
+    StubRoutines::_jint_fill = generate_fill(T_INT, false, "jint_fill");
+    StubRoutines::_arrayof_jbyte_fill = generate_fill(T_BYTE, true, "arrayof_jbyte_fill");
+    StubRoutines::_arrayof_jshort_fill = generate_fill(T_SHORT, true, "arrayof_jshort_fill");
+    StubRoutines::_arrayof_jint_fill = generate_fill(T_INT, true, "arrayof_jint_fill");
+
     StubRoutines::_arrayof_jint_disjoint_arraycopy  =
         StubRoutines::_jint_disjoint_arraycopy;
     StubRoutines::_arrayof_oop_disjoint_arraycopy   =