• Rémy Oudompheng's avatar
    cmd/8g: do not take the address of string/slice for &s[i] · 2de064b6
    Rémy Oudompheng authored
    A similar change was made in 6g recently.
    
    LEALs in cmd/go: 31440 before, 27867 after.
    
    benchmark                 old ns/op    new ns/op    delta
    BenchmarkBinaryTree17    7065794000   6723617000   -4.84%
    BenchmarkFannkuch11      7767395000   7477945000   -3.73%
    BenchmarkGobDecode         34708140     34857820   +0.43%
    BenchmarkGobEncode         10998780     10960060   -0.35%
    BenchmarkGzip            1603630000   1471052000   -8.27%
    BenchmarkGunzip           242573900    240650400   -0.79%
    BenchmarkJSONEncode       120842200    117966100   -2.38%
    BenchmarkJSONDecode       247254900    249103100   +0.75%
    BenchmarkMandelbrot200     29237330     29241790   +0.02%
    BenchmarkParse              8111320      8096865   -0.18%
    BenchmarkRevcomp         2595780000   2694153000   +3.79%
    BenchmarkTemplate         276679600    264497000   -4.40%
    
    benchmark                              old ns/op    new ns/op    delta
    BenchmarkAppendFloatDecimal                  429          416   -3.03%
    BenchmarkAppendFloat                         780          740   -5.13%
    BenchmarkAppendFloatExp                      746          700   -6.17%
    BenchmarkAppendFloatNegExp                   752          694   -7.71%
    BenchmarkAppendFloatBig                     1228         1108   -9.77%
    BenchmarkAppendFloat32Integer                457          416   -8.97%
    BenchmarkAppendFloat32ExactFraction          662          631   -4.68%
    BenchmarkAppendFloat32Point                  771          735   -4.67%
    BenchmarkAppendFloat32Exp                    722          672   -6.93%
    BenchmarkAppendFloat32NegExp                 724          659   -8.98%
    BenchmarkAppendFloat64Fixed1                 429          400   -6.76%
    BenchmarkAppendFloat64Fixed2                 463          442   -4.54%
    
    Update #1914.
    
    R=golang-dev, daniel.morsing, rsc
    CC=golang-dev
    https://golang.org/cl/6574043
    2de064b6
gg.h 3.51 KB