7913f7dfcf
This shrinks the compiler without impacting performance. (The performance-sensitive part of rewrite rules is the non-match case.) Passes toolstash-check -all. Executable size: file before after Δ % compile 20356168 20163960 -192208 -0.944% total 115599376 115407168 -192208 -0.166% Text size: file before after Δ % cmd/compile/internal/ssa.s 3928309 3778774 -149535 -3.807% total 18862943 18713408 -149535 -0.793% Memory allocated compiling package SSA: SSA 12.7M ± 0% 12.5M ± 0% -1.74% (p=0.008 n=5+5) Compiler speed impact: name old time/op new time/op delta Template 211ms ± 1% 211ms ± 2% ~ (p=0.832 n=49+49) Unicode 82.8ms ± 2% 83.2ms ± 2% +0.44% (p=0.022 n=46+49) GoTypes 726ms ± 1% 728ms ± 2% ~ (p=0.076 n=46+48) Compiler 3.39s ± 2% 3.40s ± 2% ~ (p=0.633 n=48+49) SSA 7.71s ± 1% 7.65s ± 1% -0.78% (p=0.000 n=45+44) Flate 134ms ± 1% 134ms ± 1% ~ (p=0.195 n=50+49) GoParser 167ms ± 1% 167ms ± 1% ~ (p=0.390 n=47+47) Reflect 453ms ± 3% 452ms ± 2% ~ (p=0.492 n=48+49) Tar 184ms ± 3% 184ms ± 2% ~ (p=0.862 n=50+48) XML 248ms ± 2% 248ms ± 2% ~ (p=0.096 n=49+47) [Geo mean] 415ms 415ms -0.03% name old user-time/op new user-time/op delta Template 273ms ± 1% 273ms ± 2% ~ (p=0.711 n=48+48) Unicode 117ms ± 6% 117ms ± 5% ~ (p=0.633 n=50+50) GoTypes 972ms ± 2% 974ms ± 1% +0.29% (p=0.016 n=47+49) Compiler 4.46s ± 6% 4.51s ± 6% ~ (p=0.093 n=50+50) SSA 10.4s ± 1% 10.3s ± 2% -0.94% (p=0.000 n=45+50) Flate 166ms ± 2% 167ms ± 2% ~ (p=0.148 n=49+48) GoParser 202ms ± 1% 202ms ± 2% -0.28% (p=0.014 n=47+49) Reflect 594ms ± 2% 594ms ± 2% ~ (p=0.717 n=48+49) Tar 224ms ± 2% 224ms ± 2% ~ (p=0.805 n=50+49) XML 311ms ± 1% 310ms ± 1% ~ (p=0.177 n=49+48) [Geo mean] 537ms 537ms +0.01% Change-Id: I562b9f349b34ddcff01771769e6dbbc80604da7a Reviewed-on: https://go-review.googlesource.com/c/go/+/221237 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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The Go Programming Language
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