| commit | 37682f7a797a2f13dcc5496e506bfd662f6e51fd | [log] [tgz] |
|---|---|---|
| author | Cherry Zhang <cherryyz@google.com> | Sat Jun 20 14:38:38 2020 -0400 |
| committer | Cherry Zhang <cherryyz@google.com> | Tue Jun 23 00:57:30 2020 +0000 |
| tree | 32c1252b28ab65873fcb8116f9e0d1e6dbbd6110 | |
| parent | 5e526e67e7fcb577c446b74b59fb7a53343288f1 [diff] |
[dev.link] cmd/link: apply relocations while writing symbols We can apply relocations of a symbol right after the symbol data is copied to output buffer. This should help locality and parallelism (parallelizing over blocks, instead of over segments). Linking cmd/compile, Asmb+Reloc 23.9ms ±18% 16.5ms ±11% -30.73% (p=0.008 n=5+5) Linking cmd/compile with external linking, Asmb+Reloc 74.0ms ± 3% 33.8ms ± 8% -54.32% (p=0.008 n=5+5) In external linking mode, allocation goes up slightly, as we do smaller batching now. It doesn't seem too bad. Asmb+Reloc 15.0MB ± 0% 16.7MB ± 0% +11.22% (p=0.008 n=5+5) Change-Id: Ide33d9ff86c39124c8f5cfc050d7badc753a1ced Reviewed-on: https://go-review.googlesource.com/c/go/+/239197 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Jeremy Faller <jeremy@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
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