Mon, 01 Feb 2010 19:29:46 +0100
6921352: JSR 292 needs its own deopt handler
Summary: We need to introduce a new MH deopt handler so we can easily determine if the deopt happened at a MH call site or not.
Reviewed-by: never, jrose
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25 // Sets the default values for platform dependent flags used by the runtime system.
26 // (see globals.hpp)
28 define_pd_global(bool, ConvertSleepToYield, true);
29 define_pd_global(bool, ShareVtableStubs, true);
30 define_pd_global(bool, CountInterpCalls, true);
31 define_pd_global(bool, NeedsDeoptSuspend, false); // only register window machines need this
33 define_pd_global(bool, ImplicitNullChecks, true); // Generate code for implicit null checks
34 define_pd_global(bool, UncommonNullCast, true); // Uncommon-trap NULLs past to check cast
36 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
37 // assign a different value for C2 without touching a number of files. Use
38 // #ifdef to minimize the change as it's late in Mantis. -- FIXME.
39 // c1 doesn't have this problem because the fix to 4858033 assures us
40 // the the vep is aligned at CodeEntryAlignment whereas c2 only aligns
41 // the uep and the vep doesn't get real alignment but just slops on by
42 // only assured that the entry instruction meets the 5 byte size requirement.
43 #ifdef COMPILER2
44 define_pd_global(intx, CodeEntryAlignment, 32);
45 #else
46 define_pd_global(intx, CodeEntryAlignment, 16);
47 #endif // COMPILER2
48 define_pd_global(intx, InlineFrequencyCount, 100);
49 define_pd_global(intx, InlineSmallCode, 1000);
51 define_pd_global(intx, StackYellowPages, 2);
52 define_pd_global(intx, StackRedPages, 1);
53 #ifdef AMD64
54 // Very large C++ stack frames using solaris-amd64 optimized builds
55 // due to lack of optimization caused by C++ compiler bugs
56 define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2));
57 #else
58 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
59 #endif // AMD64
61 define_pd_global(intx, PreInflateSpin, 10);
63 define_pd_global(bool, RewriteBytecodes, true);
64 define_pd_global(bool, RewriteFrequentPairs, true);