Mercurial > hg > graal-jvmci-8
diff src/share/vm/runtime/globals.hpp @ 642:660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
Summary: Use zero based compressed oops if java heap is below 32gb and unscaled compressed oops if java heap is below 4gb.
Reviewed-by: never, twisti, jcoomes, coleenp
author | kvn |
---|---|
date | Thu, 12 Mar 2009 10:37:46 -0700 |
parents | c6c601a0f2d6 |
children | c771b7f43bbf |
line wrap: on
line diff
--- a/src/share/vm/runtime/globals.hpp Wed Mar 11 14:16:13 2009 -0700 +++ b/src/share/vm/runtime/globals.hpp Thu Mar 12 10:37:46 2009 -0700 @@ -303,11 +303,14 @@ "Use 32-bit object references in 64-bit VM. " \ "lp64_product means flag is always constant in 32 bit VM") \ \ - lp64_product(bool, CheckCompressedOops, trueInDebug, \ - "generate checks in encoding/decoding code") \ - \ - product(bool, UseImplicitNullCheckForNarrowOop, true, \ - "generate implicit null check in indexed addressing mode.") \ + notproduct(bool, CheckCompressedOops, true, \ + "generate checks in encoding/decoding code in debug VM") \ + \ + product_pd(uintx, HeapBaseMinAddress, \ + "OS specific low limit for heap base address") \ + \ + diagnostic(bool, PrintCompressedOopsMode, false, \ + "Print compressed oops base address and encoding mode") \ \ /* UseMembar is theoretically a temp flag used for memory barrier \ * removal testing. It was supposed to be removed before FCS but has \