1. 17 Dec, 2010 1 commit
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  12. 24 Sep, 2010 1 commit
    • dimich@chromium.org's avatar
      Add CODE_POINTER_ALIGN, use it in Page to align generated code. · 589eb4a8
      dimich@chromium.org authored
      The object's space in Page starts after Page header and is aligned to kMapAlignment which is 32 bytes on 32-bit and 8 bytes on 64-bit.
      
      In case of 64-bit target, the current page header size is exactly 32 bytes so we get the code magically aligned at 32 bytes but it is better to have a separate CODE_POINTER_ALIGN macro to make sure the object space in Page is aligned properly for both maps and code.
      
      There could be a small waste of bytes sometimes (since both Page header and Code header sizes are aligned separately) but it seems the optimal one would involve cross-dependencies between .h files and not clear if it's worth it.
      
      This is a back-port from Isolates branch.
      
      Review URL: http://codereview.chromium.org/3461021
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5526 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      589eb4a8
  13. 03 Sep, 2010 2 commits
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  20. 25 May, 2010 1 commit
    • vegorov@chromium.org's avatar
      Cardmarking writebarrier. · 675e711f
      vegorov@chromium.org authored
      - New сardmarking write barrier handles large objects and normal objects in a similar fashion (no more additional space for pointer tracking is required, no conditional branches in WB code).
      - Changes to enable oldspaces iteration without maps decoding:
      -- layout change for FixedArrays: length is stored as a smis (initial patch by
      Kevin Millikin)
      -- layout change for SharedFunctionInfo: integer fields are stored as smi on
      arm, ia32 and rearranged on x64.
      -- layout change for String: meaning of LSB bit is fliped (1 now means hash not
      computed); on x64 padding is added.
      -- layout of maps is _not_ changed. Map space is currently iterated in a special
      way.
      
      Review URL: http://codereview.chromium.org/2144006
      
      git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4715 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
      675e711f
  21. 21 May, 2010 2 commits
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  30. 19 Jan, 2010 1 commit