• Clemens Backes's avatar
    [wasm] Implement memory64 bulk memory on 32-bit · 80326050
    Clemens Backes authored
    This adds the missing implementation of bulk memory operations on 64-bit
    memory on 32-bit systems. This is tricky because especially on ia32 we
    don't have a lot of registers, so we cannot keep three 64-bit values
    in registers at the same time.
    Thus combine the high words into a single register early, and use a
    single zero-check afterwards.
    
    R=thibaudm@chromium.org
    
    Bug: v8:10949, chromium:1281995
    Change-Id: I017bc43989e4b6195b46b5d0738552a685362e43
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3468335Reviewed-by: 's avatarThibaud Michaud <thibaudm@chromium.org>
    Commit-Queue: Clemens Backes <clemensb@chromium.org>
    Cr-Commit-Position: refs/heads/main@{#79196}
    80326050
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