• Zhao Jiazhong's avatar
    [mips][builtins] Move non-JS linkage builtins code objects into RO_SPACE · c8dfd2cf
    Zhao Jiazhong authored
    port 352bbb12 https://crrev.com/c/1893192
    
    Original Commit Message:
    
      Reland "Reland: [builtins] Move non-JS linkage builtins code objects into RO_SPACE"
    
      This is a reland of 855591a5
    
      Fixes break in builds that verify ReadOnlyHeap by relaxing the requirement for
      Code objects to be in CODE_SPACE in PagedSpaceObjectIterator::FromCurrentPage.
    
      Original change's description:
    
      > Reland: [builtins] Move non-JS linkage builtins code objects into RO_SPACE
      >
      > Reland of https://chromium-review.googlesource.com/c/v8/v8/+/1795358.
      >
      > [builtins] Move non-JS linkage builtins code objects into RO_SPACE
      >
      > Creates an allow-list of builtins that can still go in code_space
      > including all TFJ builtins and a small manual list that should be pared
      > down in the future.
      >
      > For builtins that go in RO_SPACE a Code object is created that contains an
      > immediate trap instruction. Generally these Code objects are still no
      > smaller than CODE_SPACE Code objects because of the Code object alignment
      > requirements. This will hopefully be addressed in a follow-up CL either by
      > relaxing them or removing the instruction stream completely.
      >
      > In the snapshot, this reduces code_space from ~152k to ~40k (-112k) and
      > increases by the same amount.
      >
      > Change-Id: I76661c35c7ea5866c1fb16e87e87122b3e3ca0ce
      > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1893336
      > Commit-Queue: Dan Elphick <delphick@chromium.org>
      > Reviewed-by: Jakob Gruber <jgruber@chromium.org>
      > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
      > Cr-Commit-Position: refs/heads/master@{#64700}
    
    Change-Id: I58c10e438f164a992041960f7a54d57be500ef48
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1898831
    Auto-Submit: Zhao Jiazhong <kyslie3100@gmail.com>
    Reviewed-by: 's avatarBill Budge <bbudge@chromium.org>
    Commit-Queue: Bill Budge <bbudge@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#64776}
    c8dfd2cf
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