• Pan, Tao's avatar
    Reland "[compiler] Remove the optimized OSR code if deoptimizing at inside of loop" · c2d239dd
    Pan, Tao authored
    This is a reland of commit c8c17619
    
    This CL includes:
    
    - crrev.com/c/3679846 Add condition use_ic to the removing the optimized OSR code logic
    - crrev.com/c/3686589 Add out of bytecode array to break condition of removing OSR code cache logic
    - Add JumpLoop nesting level 0 to break condition of removing OSR code cache logic
    - Change to use Deoptimizer::DeoptimizeFunction() to deoptimize OSR code
    
    Original change's description:
    > [compiler] Remove the optimized OSR code if deoptimizing at inside of loop
    >
    > If the optimized code is deoptimized and the deoptimized exit offset is
    > inside of the optimized OSR code related loop, the optimized OSR code is
    > also out of date, remove the optimized OSR code, it will avoid hit the
    > optimized OSR code and soon later deoptimization of the optimized OSR
    > code.
    > This CL will reduce deoptimization. E.g. Deoptimization of JetStream2
    > case navier-stokes function addFields is reduced from twice to once.
    >
    > Change-Id: I5bbf3039e916c3736b5b967d1f36b6ea90cfd40b
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3648219
    > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
    > Commit-Queue: Tao Pan <tao.pan@intel.com>
    > Cr-Commit-Position: refs/heads/main@{#80826}
    
    Bug: chromium:1330444
    Change-Id: I97a466ddfa764438b45f33c6ae33cb921d57278d
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3690451Reviewed-by: 's avatarLeszek Swirski <leszeks@chromium.org>
    Commit-Queue: Tao Pan <tao.pan@intel.com>
    Cr-Commit-Position: refs/heads/main@{#81110}
    c2d239dd
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