6111ac826e
Reapplies CL 451292, which is reverted at CL 495475. The failure is fixed at CL 495595. Build the compiler with PGO. As go build -pgo=auto is enabled by default, we just need to store a profile in the compiler's directory. The profile is collected from building all std and cmd packages on Linux/AMD64 machine, using profile.sh. This improves the compiler speed. On Linux/AMD64, name old time/op new time/op delta Template 138ms ± 5% 136ms ± 4% -1.44% (p=0.005 n=36+39) Unicode 147ms ± 4% 140ms ± 4% -4.99% (p=0.000 n=40+39) GoTypes 780ms ± 3% 778ms ± 4% ~ (p=0.172 n=39+39) Compiler 105ms ± 5% 99ms ± 7% -5.64% (p=0.000 n=40+40) SSA 5.83s ± 6% 5.80s ± 6% ~ (p=0.556 n=40+40) Flate 89.0ms ± 5% 87.0ms ± 6% -2.18% (p=0.000 n=40+40) GoParser 172ms ± 4% 167ms ± 4% -2.72% (p=0.000 n=39+40) Reflect 333ms ± 4% 333ms ± 3% ~ (p=0.426 n=40+39) Tar 128ms ± 4% 126ms ± 4% -1.82% (p=0.000 n=39+39) XML 173ms ± 4% 170ms ± 4% -1.39% (p=0.000 n=39+40) [Geo mean] 253ms 248ms -2.13% The profile is pretty transferable. Using the same profile, we see a bigger win on Darwin/ARM64, name old time/op new time/op delta Template 71.0ms ± 2% 68.3ms ± 2% -3.90% (p=0.000 n=20+20) Unicode 71.8ms ± 2% 66.8ms ± 2% -6.90% (p=0.000 n=20+20) GoTypes 444ms ± 1% 428ms ± 1% -3.53% (p=0.000 n=19+20) Compiler 48.9ms ± 3% 45.6ms ± 3% -6.81% (p=0.000 n=20+20) SSA 3.25s ± 2% 3.09s ± 1% -5.03% (p=0.000 n=19+20) Flate 44.0ms ± 2% 42.3ms ± 2% -3.72% (p=0.000 n=19+20) GoParser 76.7ms ± 1% 73.5ms ± 1% -4.15% (p=0.000 n=18+19) Reflect 172ms ± 1% 165ms ± 1% -4.13% (p=0.000 n=20+19) Tar 63.1ms ± 1% 60.4ms ± 2% -4.24% (p=0.000 n=19+20) XML 83.2ms ± 2% 79.2ms ± 2% -4.79% (p=0.000 n=20+20) [Geo mean] 127ms 121ms -4.73% Change-Id: Ifbe35e48b3ea3b29430249b4667d2df8a2515aeb Reviewed-on: https://go-review.googlesource.com/c/go/+/495596 Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Michael Pratt <mpratt@google.com> |
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| lib/time | ||
| misc | ||
| src | ||
| test | ||
| .gitattributes | ||
| .gitignore | ||
| codereview.cfg | ||
| CONTRIBUTING.md | ||
| go.env | ||
| LICENSE | ||
| PATENTS | ||
| README.md | ||
| SECURITY.md | ||
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