8585f9fdb1
* Avoid calculating insertk until needed. * Avoid a pointer into b.tophash and just track the insertion index. This avoids b.tophash being marked as escaping to heap. * Calculate val only once at the end of the mapassign functions. Function sizes decrease slightly, e.g. for mapassign_faststr: before "".mapassign_faststr STEXT size=1166 args=0x28 locals=0x78 after "".mapassign_faststr STEXT size=1080 args=0x28 locals=0x68 name old time/op new time/op delta MapAssign/Int32/256-4 19.4ns ± 4% 19.5ns ±11% ~ (p=0.973 n=20+20) MapAssign/Int32/65536-4 32.5ns ± 2% 32.4ns ± 3% ~ (p=0.078 n=20+19) MapAssign/Int64/256-4 20.3ns ± 6% 17.6ns ± 5% -13.01% (p=0.000 n=20+20) MapAssign/Int64/65536-4 33.3ns ± 2% 33.3ns ± 1% ~ (p=0.444 n=20+20) MapAssign/Str/256-4 22.3ns ± 3% 22.4ns ± 3% ~ (p=0.343 n=20+20) MapAssign/Str/65536-4 44.9ns ± 1% 43.9ns ± 1% -2.39% (p=0.000 n=20+19) Change-Id: I2627bb8a961d366d9473b5922fa129176319eb22 Reviewed-on: https://go-review.googlesource.com/74870 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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The Go Programming Language
Go is an open source programming language that makes it easy to build simple, reliable, and efficient software.
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