| commit | d33a5136e1a4513a3b1deacf1cc0677e070c7e8f | [log] [tgz] |
|---|---|---|
| author | Cherry Mui <cherryyz@google.com> | Fri Apr 21 12:02:30 2023 -0400 |
| committer | Cherry Mui <cherryyz@google.com> | Mon Apr 24 16:49:08 2023 +0000 |
| tree | 49fba86e0c30b2acc7abb32069611a99d5f2afbd | |
| parent | 33c06ee12a53e293f4a787c1dfde7eb7ddb0be63 [diff] |
cmd/link: use uint32 as symbol index Currently, a symbol's global index, the Sym type, is defined as an int, which is 64-bit on 64-bit machines. We're unlikely to have more than 4 billion symbols in the near future. Even if we will, we will probably hit some other limit (e.g. section size) before the symbol number limit. Use a 32-bit type to reduce memory usage. E,g, linking cmd/compile in external linking mode (on macOS/amd64) Munmap_GC 43.2M ± 0% 35.5M ± 1% -17.74% (p=0.000 n=16+20) This brings the memory usage back before the previous CL, and even lower. Change-Id: Ie185f1586638fe70d8121312bfa9410942d518c7 Reviewed-on: https://go-review.googlesource.com/c/go/+/487416 Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: Cherry Mui <cherryyz@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Than McIntosh <thanm@google.com>
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