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| author | fanzha02 <fannie.zhang@arm.com> | 2018-07-16 04:45:25 +0000 |
|---|---|---|
| committer | Cherry Zhang <cherryyz@google.com> | 2018-09-17 20:49:04 +0000 |
| commit | a19a83c8ef8283e4eacef846823c23ef9f50cf32 (patch) | |
| tree | ad8aef6a502a7bdc7d8ce542dae97ff43e1c45bb /src/cmd/compile/internal/ssa/gen/ARM64Ops.go | |
| parent | e57f24ab39ff6e0ea50c84518e7f91b3a40cf547 (diff) | |
| download | go-a19a83c8ef8283e4eacef846823c23ef9f50cf32.tar.gz go-a19a83c8ef8283e4eacef846823c23ef9f50cf32.zip | |
cmd/compile: optimize math.Float64(32)bits and math.Float64(32)frombits on arm64
Use float <-> int register moves without conversion instead of stores
and loads to move float <-> int values.
Math package benchmark results.
name old time/op new time/op delta
Acosh 153ns ± 0% 147ns ± 0% -3.92% (p=0.000 n=10+10)
Asinh 183ns ± 0% 177ns ± 0% -3.28% (p=0.000 n=10+10)
Atanh 157ns ± 0% 155ns ± 0% -1.27% (p=0.000 n=10+10)
Atan2 118ns ± 0% 117ns ± 1% -0.59% (p=0.003 n=10+10)
Cbrt 119ns ± 0% 114ns ± 0% -4.20% (p=0.000 n=10+10)
Copysign 7.51ns ± 0% 6.51ns ± 0% -13.32% (p=0.000 n=9+10)
Cos 73.1ns ± 0% 70.6ns ± 0% -3.42% (p=0.000 n=10+10)
Cosh 119ns ± 0% 121ns ± 0% +1.68% (p=0.000 n=10+9)
ExpGo 154ns ± 0% 149ns ± 0% -3.05% (p=0.000 n=9+10)
Expm1 101ns ± 0% 99ns ± 0% -1.88% (p=0.000 n=10+10)
Exp2Go 150ns ± 0% 146ns ± 0% -2.67% (p=0.000 n=10+10)
Abs 7.01ns ± 0% 6.01ns ± 0% -14.27% (p=0.000 n=10+9)
Mod 234ns ± 0% 212ns ± 0% -9.40% (p=0.000 n=9+10)
Frexp 34.5ns ± 0% 30.0ns ± 0% -13.04% (p=0.000 n=10+10)
Gamma 112ns ± 0% 111ns ± 0% -0.89% (p=0.000 n=10+10)
Hypot 73.6ns ± 0% 68.6ns ± 0% -6.79% (p=0.000 n=10+10)
HypotGo 77.1ns ± 0% 72.1ns ± 0% -6.49% (p=0.000 n=10+10)
Ilogb 31.0ns ± 0% 28.0ns ± 0% -9.68% (p=0.000 n=10+10)
J0 437ns ± 0% 434ns ± 0% -0.62% (p=0.000 n=10+10)
J1 433ns ± 0% 431ns ± 0% -0.46% (p=0.000 n=10+10)
Jn 927ns ± 0% 922ns ± 0% -0.54% (p=0.000 n=10+10)
Ldexp 41.5ns ± 0% 37.0ns ± 0% -10.84% (p=0.000 n=9+10)
Log 124ns ± 0% 118ns ± 0% -4.84% (p=0.000 n=10+9)
Logb 34.0ns ± 0% 32.0ns ± 0% -5.88% (p=0.000 n=10+10)
Log1p 110ns ± 0% 108ns ± 0% -1.82% (p=0.000 n=10+10)
Log10 136ns ± 0% 132ns ± 0% -2.94% (p=0.000 n=10+10)
Log2 51.6ns ± 0% 47.1ns ± 0% -8.72% (p=0.000 n=10+10)
Nextafter32 33.0ns ± 0% 30.5ns ± 0% -7.58% (p=0.000 n=10+10)
Nextafter64 29.0ns ± 0% 26.5ns ± 0% -8.62% (p=0.000 n=10+10)
PowInt 169ns ± 0% 160ns ± 0% -5.33% (p=0.000 n=10+10)
PowFrac 375ns ± 0% 361ns ± 0% -3.73% (p=0.000 n=10+10)
RoundToEven 14.0ns ± 0% 12.5ns ± 0% -10.71% (p=0.000 n=10+10)
Remainder 206ns ± 0% 192ns ± 0% -6.80% (p=0.000 n=10+9)
Signbit 6.01ns ± 0% 5.51ns ± 0% -8.32% (p=0.000 n=10+9)
Sin 70.1ns ± 0% 69.6ns ± 0% -0.71% (p=0.000 n=10+10)
Sincos 99.1ns ± 0% 99.6ns ± 0% +0.50% (p=0.000 n=9+10)
SqrtGoLatency 178ns ± 0% 146ns ± 0% -17.70% (p=0.000 n=8+10)
SqrtPrime 9.19µs ± 0% 9.20µs ± 0% +0.01% (p=0.000 n=9+9)
Tanh 125ns ± 1% 127ns ± 0% +1.36% (p=0.000 n=10+10)
Y0 428ns ± 0% 426ns ± 0% -0.47% (p=0.000 n=10+10)
Y1 431ns ± 0% 429ns ± 0% -0.46% (p=0.000 n=10+9)
Yn 906ns ± 0% 901ns ± 0% -0.55% (p=0.000 n=10+10)
Float64bits 4.50ns ± 0% 3.50ns ± 0% -22.22% (p=0.000 n=10+10)
Float64frombits 4.00ns ± 0% 3.50ns ± 0% -12.50% (p=0.000 n=10+9)
Float32bits 4.50ns ± 0% 3.50ns ± 0% -22.22% (p=0.002 n=8+10)
Float32frombits 4.00ns ± 0% 3.50ns ± 0% -12.50% (p=0.000 n=10+10)
Change-Id: Iba829e15d5624962fe0c699139ea783efeefabc2
Reviewed-on: https://go-review.googlesource.com/129715
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Diffstat (limited to 'src/cmd/compile/internal/ssa/gen/ARM64Ops.go')
| -rw-r--r-- | src/cmd/compile/internal/ssa/gen/ARM64Ops.go | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/ssa/gen/ARM64Ops.go b/src/cmd/compile/internal/ssa/gen/ARM64Ops.go index da078517d4..4381c081b7 100644 --- a/src/cmd/compile/internal/ssa/gen/ARM64Ops.go +++ b/src/cmd/compile/internal/ssa/gen/ARM64Ops.go @@ -391,6 +391,8 @@ func init() { {name: "FMOVDgpfp", argLength: 1, reg: gpfp, asm: "FMOVD"}, // move int64 to float64 (no conversion) {name: "FMOVDfpgp", argLength: 1, reg: fpgp, asm: "FMOVD"}, // move float64 to int64 (no conversion) + {name: "FMOVSgpfp", argLength: 1, reg: gpfp, asm: "FMOVS"}, // move 32bits from int to float reg (no conversion) + {name: "FMOVSfpgp", argLength: 1, reg: fpgp, asm: "FMOVS"}, // move 32bits from float to int reg, zero extend (no conversion) // conversions {name: "MOVBreg", argLength: 1, reg: gp11, asm: "MOVB"}, // move from arg0, sign-extended from byte |