Mercurial > hg > truffle
diff src/share/vm/runtime/arguments.cpp @ 325:93befa083681
6741004: UseLargePages + UseCompressedOops breaks implicit null checking guard page
Summary: Turn off c2 implicit null checking on windows and large pages specified.
Reviewed-by: jrose, xlu
author | coleenp |
---|---|
date | Tue, 02 Sep 2008 15:18:26 -0400 |
parents | aa8f54688692 |
children | 032ddb9432ad |
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--- a/src/share/vm/runtime/arguments.cpp Sun Aug 31 15:24:54 2008 -0700 +++ b/src/share/vm/runtime/arguments.cpp Tue Sep 02 15:18:26 2008 -0400 @@ -1204,15 +1204,17 @@ // Turn off until bug is fixed. // FLAG_SET_ERGO(bool, UseCompressedOops, true); } +#ifdef _WIN64 + if (UseLargePages && UseCompressedOops) { + // Cannot allocate guard pages for implicit checks in indexed addressing + // mode, when large pages are specified on windows. + FLAG_SET_DEFAULT(UseImplicitNullCheckForNarrowOop, false); + } +#endif // _WIN64 } else { if (UseCompressedOops && !FLAG_IS_DEFAULT(UseCompressedOops)) { // If specified, give a warning - if (UseConcMarkSweepGC){ - warning("Compressed Oops does not work with CMS"); - } else { - warning( - "Max heap size too large for Compressed Oops"); - } + warning( "Max heap size too large for Compressed Oops"); FLAG_SET_DEFAULT(UseCompressedOops, false); } }