8034188: OSR methods may not be recompiled at proper compilation level

Summary: remove_osr_nmethod doesn't check that it is the correct method
Reviewed-by: kvn, iveresov

src/share/vm/oops/instanceKlass.cpp

@@ -2771,7 +2771,7 @@ void InstanceKlass::remove_osr_nmethod(nmethod* n) {
   Method* m = n->method();
   // Search for match
   while(cur != NULL && cur != n) {
-    if (TieredCompilation) {
+    if (TieredCompilation && m == cur->method()) {
       // Find max level before n
       max_level = MAX2(max_level, cur->comp_level());
     }
@@ -2793,7 +2793,9 @@ void InstanceKlass::remove_osr_nmethod(nmethod* n) {
     cur = next;
     while (cur != NULL) {
       // Find max level after n
+      if (m == cur->method()) {
         max_level = MAX2(max_level, cur->comp_level());
+      }
       cur = cur->osr_link();
     }
     m->set_highest_osr_comp_level(max_level);