• bmeurer's avatar
    [builtins] Provide Math.floor as TurboFan builtin. · 36ead519
    bmeurer authored
    This way we avoid the second deoptimization for the Math.floor and
    Math.ceil builtins when -0 is involved. We still deoptimize the inlined
    Crankshaft version in various cases, that's a separate issue.
    
    The algorithm used for implement CodeStubAssembler::Float64Floor is
    vaguely based on the fast math version used in the libm of various BSDs,
    but had to be reengineered to match the EcmaScript specification.
    
    R=epertoso@chromium.org
    BUG=v8:2890, v8:4059
    LOG=n
    
    Review URL: https://codereview.chromium.org/1828253002
    
    Cr-Commit-Position: refs/heads/master@{#35083}
    36ead519
contexts.h 29.3 KB