• Lynn Boger's avatar
    math: improve sqrt for ppc64le,ppc64 · b4b2ddb8
    Lynn Boger authored
    The existing implementation uses code written in Go to
    implement Sqrt; this adds the assembler to use the sqrt
    instruction for Power and makes the necessary changes to
    allow it to be inlined.
    
    The following tests showed this relative improvement:
    
    benchmark                 delta
    BenchmarkSqrt             -97.91%
    BenchmarkSqrtIndirect     -96.65%
    BenchmarkSqrtGo           -35.93%
    BenchmarkSqrtPrime        -96.94%
    
    Fixes #14349
    
    Change-Id: I8074f4dc63486e756587564ceb320aca300bf5fa
    Reviewed-on: https://go-review.googlesource.com/19515Reviewed-by: 's avatarMinux Ma <minux@golang.org>
    b4b2ddb8
prog.go 12.8 KB