• Clemens Hammacher's avatar
    [Liftoff][x64] Fix and optimize spilling i64 constants · 27e36250
    Clemens Hammacher authored
    There was a bug in spilling i64 constants, in that the half stack slot
    *above* should have been filled with the high word instead of the one *below*.
    
    Instead of just fixing this, this CL optimizes spilling x64 constants to the
    stack by emitting shorter and faster code, especially if the constant fits in
    31 bits (which is the majority of cases).
    
    R=titzer@chromium.org
    
    Bug: v8:7565,v8:6600
    Change-Id: Id75ddafe82615930a84333a0c49bd515ccbcc093
    Reviewed-on: https://chromium-review.googlesource.com/965062Reviewed-by: 's avatarBen Titzer <titzer@chromium.org>
    Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#51985}
    27e36250
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