21af2d39c2
Deleting the string merging pass makes the linker 30-35% faster but makes jujud (using the github.com/davecheney/benchjuju snapshot) 2.5% larger. Two optimizations bring the space overhead down to 0.6%. First, change the default alignment for string data to 1 byte. (It was previously defaulting to larger amounts, usually pointer width.) Second, write out the type string for T (usually a bigger expression) as "*T"[1:], so that the type strings for T and *T share storage. Combined, these obtain the bulk of the benefit of string merging at essentially no cost. The remaining benefit from string merging is not worth the excessive cost, so delete it. As penance for making the jujud binary 0.6% larger, the next CL in this sequence trims the reflect functype information enough to make the jujud binary overall 0.75% smaller (that is, that CL has a net -1.35% effect). For #6853. Fixes #14648. Change-Id: I3fdd74c85410930c36bb66160ca4174ed540fc6e Reviewed-on: https://go-review.googlesource.com/20334 Reviewed-by: David Crawshaw <crawshaw@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> |
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Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.
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