--- a/langtools/src/share/classes/com/sun/tools/javac/jvm/Gen.java	Wed Sep 29 23:27:57 2010 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/jvm/Gen.java	Thu Sep 30 10:47:12 2010 -0700
@@ -46,6 +46,7 @@
 import static com.sun.tools.javac.code.TypeTags.*;
 import static com.sun.tools.javac.jvm.ByteCodes.*;
 import static com.sun.tools.javac.jvm.CRTFlags.*;
+import static com.sun.tools.javac.main.OptionName.*;
 
 /** This pass maps flat Java (i.e. without inner classes) to bytecodes.
  *
@@ -113,19 +114,19 @@
 
         Options options = Options.instance(context);
         lineDebugInfo =
-            options.get("-g:") == null ||
-            options.get("-g:lines") != null;
+            options.isUnset(G_CUSTOM) ||
+            options.isSet(G_CUSTOM, "lines");
         varDebugInfo =
-            options.get("-g:") == null
-            ? options.get("-g") != null
-            : options.get("-g:vars") != null;
-        genCrt = options.get("-Xjcov") != null;
-        debugCode = options.get("debugcode") != null;
-        allowInvokedynamic = target.hasInvokedynamic() || options.get("invokedynamic") != null;
+            options.isUnset(G_CUSTOM)
+            ? options.isSet(G)
+            : options.isSet(G_CUSTOM, "vars");
+        genCrt = options.isSet(XJCOV);
+        debugCode = options.isSet("debugcode");
+        allowInvokedynamic = target.hasInvokedynamic() || options.isSet("invokedynamic");
 
         generateIproxies =
             target.requiresIproxy() ||
-            options.get("miranda") != null;
+            options.isSet("miranda");
 
         if (target.generateStackMapTable()) {
             // ignore cldc because we cannot have both stackmap formats