5c40210987
Implement it through a partial order datastructure, which keeps the relations between SSA values in a forest of DAGs and is able to discover contradictions. In make.bash, this patch is able to prove hundreds of conditions which were not proved before. Compilebench: name old time/op new time/op delta Template 371ms ± 2% 368ms ± 1% ~ (p=0.222 n=5+5) Unicode 203ms ± 6% 199ms ± 3% ~ (p=0.421 n=5+5) GoTypes 1.17s ± 4% 1.18s ± 1% ~ (p=0.151 n=5+5) Compiler 5.54s ± 2% 5.59s ± 1% ~ (p=0.548 n=5+5) SSA 12.9s ± 2% 13.2s ± 1% +2.96% (p=0.032 n=5+5) Flate 245ms ± 2% 247ms ± 3% ~ (p=0.690 n=5+5) GoParser 302ms ± 6% 302ms ± 4% ~ (p=0.548 n=5+5) Reflect 764ms ± 4% 773ms ± 3% ~ (p=0.095 n=5+5) Tar 354ms ± 6% 361ms ± 3% ~ (p=0.222 n=5+5) XML 434ms ± 3% 429ms ± 1% ~ (p=0.421 n=5+5) StdCmd 22.6s ± 1% 22.9s ± 1% +1.40% (p=0.032 n=5+5) name old user-time/op new user-time/op delta Template 436ms ± 8% 426ms ± 5% ~ (p=0.579 n=5+5) Unicode 219ms ±15% 219ms ±12% ~ (p=1.000 n=5+5) GoTypes 1.47s ± 6% 1.53s ± 6% ~ (p=0.222 n=5+5) Compiler 7.26s ± 4% 7.40s ± 2% ~ (p=0.389 n=5+5) SSA 17.7s ± 4% 18.5s ± 4% +4.13% (p=0.032 n=5+5) Flate 257ms ± 5% 268ms ± 9% ~ (p=0.333 n=5+5) GoParser 354ms ± 6% 348ms ± 6% ~ (p=0.913 n=5+5) Reflect 904ms ± 2% 944ms ± 4% ~ (p=0.056 n=5+5) Tar 398ms ±11% 430ms ± 7% ~ (p=0.079 n=5+5) XML 501ms ± 7% 489ms ± 5% ~ (p=0.444 n=5+5) name old text-bytes new text-bytes delta HelloSize 670kB ± 0% 670kB ± 0% +0.00% (p=0.008 n=5+5) CmdGoSize 7.22MB ± 0% 7.21MB ± 0% -0.07% (p=0.008 n=5+5) name old data-bytes new data-bytes delta HelloSize 9.88kB ± 0% 9.88kB ± 0% ~ (all equal) CmdGoSize 248kB ± 0% 248kB ± 0% -0.06% (p=0.008 n=5+5) name old bss-bytes new bss-bytes delta HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal) CmdGoSize 145kB ± 0% 144kB ± 0% -0.20% (p=0.008 n=5+5) name old exe-bytes new exe-bytes delta HelloSize 1.43MB ± 0% 1.43MB ± 0% ~ (all equal) CmdGoSize 14.5MB ± 0% 14.5MB ± 0% -0.06% (p=0.008 n=5+5) Fixes #19714 Updates #20393 Change-Id: Ia090f5b5dc1bcd274ba8a39b233c1e1ace1b330e Reviewed-on: https://go-review.googlesource.com/100277 Run-TryBot: Giovanni Bajo <rasky@develer.com> Reviewed-by: David Chase <drchase@google.com> |
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