| commit | 357e8f83f868bd028df7f2f1c373b4d0c57d1408 | [log] [tgz] |
|---|---|---|
| author | Daniel Martí <mvdan@mvdan.cc> | Fri Sep 13 14:42:05 2019 +0100 |
| committer | Daniel Martí <mvdan@mvdan.cc> | Mon Sep 16 21:37:11 2019 +0000 |
| tree | fc1e99d3fb761dc20c82ee766c46336de398d4dc | |
| parent | 4d18a7ceb2d37b148061ee2e153d56aaef4de8fc [diff] |
cmd/compile: parallelize another big chunk of rulegen rulegen has a sanity check that ensures all the arch-specific opcodes are handled by each of the gen files. This is an expensive chunk of work, particularly since there are a lot of opcodes in total, and each one of them compiles and runs a regular expression. Parallelize that for each architecture, which greatly speeds up 'go run *.go' on my laptop with four real CPU cores. name old time/op new time/op delta Rulegen 3.39s ± 1% 2.53s ± 2% -25.34% (p=0.008 n=5+5) name old user-time/op new user-time/op delta Rulegen 10.6s ± 1% 11.2s ± 1% +6.09% (p=0.008 n=5+5) name old sys-time/op new sys-time/op delta Rulegen 201ms ± 7% 218ms ±17% ~ (p=0.548 n=5+5) name old peak-RSS-bytes new peak-RSS-bytes delta Rulegen 182MB ± 3% 184MB ± 3% ~ (p=0.690 n=5+5) Change-Id: Iec538ed0fa7eb867eeeeaab3da1e2615ce32cbb9 Reviewed-on: https://go-review.googlesource.com/c/go/+/195218 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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