04edf418d2
The decodeState type is a large part of the allocated space during Unmarshal. The errorContext field is infrequently used, and only on error. Extract it into a pointer and allocate it separate when necessary. name old time/op new time/op delta UnmarshalString-8 115ns ± 5% 114ns ± 3% ~ (p=0.170 n=15+15) UnmarshalFloat64-8 113ns ± 2% 106ns ± 1% -6.42% (p=0.000 n=15+14) UnmarshalInt64-8 93.3ns ± 1% 86.9ns ± 4% -6.89% (p=0.000 n=14+15) name old alloc/op new alloc/op delta UnmarshalString-8 192B ± 0% 160B ± 0% -16.67% (p=0.000 n=15+15) UnmarshalFloat64-8 180B ± 0% 148B ± 0% -17.78% (p=0.000 n=15+15) UnmarshalInt64-8 176B ± 0% 144B ± 0% -18.18% (p=0.000 n=15+15) name old allocs/op new allocs/op delta UnmarshalString-8 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalFloat64-8 2.00 ± 0% 2.00 ± 0% ~ (all equal) UnmarshalInt64-8 1.00 ± 0% 1.00 ± 0% ~ (all equal) Change-Id: I53f3f468e6c65f77a12e5138a2626455b197012d Reviewed-on: https://go-review.googlesource.com/c/go/+/271338 Trust: Josh Bleecher Snyder <josharian@gmail.com> Trust: Daniel Martí <mvdan@mvdan.cc> Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Daniel Martí <mvdan@mvdan.cc> |
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