options.setOptLevel(3);
options.setOptLevel(2);
  public static void setBootOptions(OPT_Options options) {    // Pick an optimization level    options.setOptLevel(3);     // Disable things that we think are a bad idea in this context    options.GUARDED_INLINE = options.guardWithCodePatch();    // Compute summaries of bootimage methods if we haven't encountered them yet.    // Does not handle unimplemented magics very well; disable until    // we can get a chance to either implement them on IA32 or fix the     // analysis to not be so brittle.    // options.SIMPLE_ESCAPE_IPA = true;    // Static inlining controls.     // Be more aggressive when building the boot image then we are normally.    options.IC_MAX_TARGET_SIZE = 5*VM_OptMethodSummary.CALL_COST;    options.IC_MAX_INLINE_DEPTH = 6;    options.IC_MAX_INLINE_EXPANSION_FACTOR = 7;    OPT_InlineOracleDictionary.registerDefault(new OPT_StaticInlineOracle());  }