• zhengxing.li's avatar
    X87: [builtins] Migrate Math.log to TurboFan. · 973823e4
    zhengxing.li authored
      port f2da19fe (r36703)
    
      original commit message:
      Introduce a dedicated Float64Log machine operator, that is either
      implemented by a direct C call or by platform specific code, i.e.
      using the FPU on x64 and ia32.
    
      This operator is used to implement Math.log as a proper TurboFan
      builtin on top of the CodeStubAssembler.
    
      Also introduce a NumberLog simplified operator on top of Float64Log
      and use that for the fast inline path of Math.log inside TurboFan
      optimized code.
    
    BUG=
    
    Review-Url: https://codereview.chromium.org/2034393002
    Cr-Commit-Position: refs/heads/master@{#36727}
    973823e4
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