--- a/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java	Fri Jun 13 18:44:55 2014 +0200
+++ b/graal/com.oracle.graal.lir/src/com/oracle/graal/lir/FrameMap.java	Fri Jun 13 20:06:44 2014 +0200
@@ -67,6 +67,8 @@
      */
     protected int outgoingSize;
 
+    protected int freeSpill4 = -1;
+
     /**
      * Determines if this frame has values on the stack for outgoing calls.
      */
@@ -295,8 +297,19 @@
             }
         }
         int size = spillSlotSize(kind);
-        spillSize = NumUtil.roundUp(spillSize + size, size);
-        return allocateNewSpillSlot(kind, 0);
+        if (size == 4 && freeSpill4 != -1) {
+            int offset = spillSize - freeSpill4 - size;
+            freeSpill4 = -1;
+            return allocateNewSpillSlot(kind, offset);
+        } else {
+            int origSpillSize = spillSize;
+            spillSize = NumUtil.roundUp(spillSize + size, size);
+            int waste = (spillSize - origSpillSize) - size;
+            if (waste == 4 && freeSpill4 == -1) {
+                freeSpill4 = origSpillSize;
+            }
+            return allocateNewSpillSlot(kind, 0);
+        }
     }
 
     private Set<StackSlot> freedSlots;

--- a/src/share/vm/compiler/compileBroker.cpp	Fri Jun 13 18:44:55 2014 +0200
+++ b/src/share/vm/compiler/compileBroker.cpp	Fri Jun 13 20:06:44 2014 +0200
@@ -1031,7 +1031,7 @@
   char name_buffer[256];
   for (int i = 0; i < c2_compiler_count; i++) {
     // Create a name for our thread.
-    sprintf(name_buffer, "C2 CompilerThread%d", i);
+    sprintf(name_buffer, "%s CompilerThread%d", _compilers[1]->name(), i);
     CompilerCounters* counters = new CompilerCounters("compilerThread", i, CHECK);
     // Shark and C2
     CompilerThread* new_thread = make_compiler_thread(name_buffer, _c2_method_queue, counters, _compilers[1], CHECK);