• Shu-yu Guo's avatar
    Reland "[ptr-cage] Reserve base registers on x64 (r14) and arm64 (x28)" · eed72063
    Shu-yu Guo authored
    This is a reland of 0c63aa9e
    
    Fixes the correctness fuzzing BUILD.gn breakage.
    
    Original change's description:
    > [ptr-cage] Reserve base registers on x64 (r14) and arm64 (x28)
    >
    > Also add a V8_COMPRESS_POINTERS_IN_SHARED_CAGE define when pointer
    > compression is enabled.
    >
    > This CL is to get performance numbers for reserving an extra register.
    > There is no actual pointer cage yet, and the base register will always
    > have the same value as the root register. The pointer decompression code
    > is switched to using the base register instead of the root register.
    >
    > Bug: v8:11460
    > Change-Id: I40bae556c2098608fb6fc193a52694e3f54754bd
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2716075
    > Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
    > Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
    > Reviewed-by: Leszek Swirski <leszeks@chromium.org>
    > Commit-Queue: Shu-yu Guo <syg@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#73204}
    
    TBR=rmcilroy@chromium.org,jkummerow@chromium.org,leszeks@chromium.org
    
    Bug: v8:11460
    Change-Id: Iecf6b783392a384b40ab33e0f4ce13538a8f81ee
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2737681Reviewed-by: 's avatarShu-yu Guo <syg@chromium.org>
    Commit-Queue: Shu-yu Guo <syg@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#73207}
    eed72063
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