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6948539: CMS+UseCompressedOops: placement of cms_free bit interferes with promoted object link
Summary: When using compressed oops, use compressed promoted pointers in b63:b31 of the mark word, so as not to interfere with the CMS "freeness bit" at b7. Updated mark-word layout documentation.
Reviewed-by: minqi, poonam, jmasa, coleenp
author | ysr |
---|---|
date | Mon, 17 May 2010 00:47:28 -0700 |
parents | e703499b4b51 |
children | a197210cb4ae 4ca65400aa33 |
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^build/ ^dist/ /nbproject/private/ ^src/share/tools/hsdis/build/ ^src/share/tools/IdealGraphVisualizer/[a-zA-Z0-9]*/build/ ^src/share/tools/IdealGraphVisualizer/build/ ^src/share/tools/IdealGraphVisualizer/dist/