e244a7a7d3
Add patterns to match common idioms for EXTR, BFI, BFXIL, SBFIZ, SBFX, UBFIZ and UBFX opcodes. go1 benchmarks results on Amberwing: name old time/op new time/op delta FmtManyArgs 786ns ± 2% 714ns ± 1% -9.20% (p=0.000 n=10+10) Gzip 437ms ± 0% 402ms ± 0% -7.99% (p=0.000 n=10+10) FmtFprintfIntInt 196ns ± 0% 182ns ± 0% -7.28% (p=0.000 n=10+9) FmtFprintfPrefixedInt 207ns ± 0% 199ns ± 0% -3.86% (p=0.000 n=10+10) FmtFprintfFloat 324ns ± 0% 316ns ± 0% -2.47% (p=0.000 n=10+8) FmtFprintfInt 119ns ± 0% 117ns ± 0% -1.68% (p=0.000 n=10+9) GobDecode 12.8ms ± 2% 12.6ms ± 1% -1.62% (p=0.002 n=10+10) JSONDecode 94.4ms ± 1% 93.4ms ± 0% -1.10% (p=0.000 n=10+10) RegexpMatchEasy0_32 247ns ± 0% 245ns ± 0% -0.65% (p=0.000 n=10+10) RegexpMatchMedium_32 314ns ± 0% 312ns ± 0% -0.64% (p=0.000 n=10+10) RegexpMatchEasy0_1K 541ns ± 0% 538ns ± 0% -0.55% (p=0.000 n=10+9) TimeParse 450ns ± 1% 448ns ± 1% -0.42% (p=0.035 n=9+9) RegexpMatchEasy1_32 244ns ± 0% 243ns ± 0% -0.41% (p=0.000 n=10+10) GoParse 6.03ms ± 0% 6.00ms ± 0% -0.40% (p=0.002 n=10+10) RegexpMatchEasy1_1K 779ns ± 0% 777ns ± 0% -0.26% (p=0.000 n=10+10) RegexpMatchHard_32 2.75µs ± 0% 2.74µs ± 1% -0.06% (p=0.026 n=9+9) BinaryTree17 11.7s ± 0% 11.6s ± 0% ~ (p=0.089 n=10+10) HTTPClientServer 89.1µs ± 1% 89.5µs ± 2% ~ (p=0.436 n=10+10) RegexpMatchHard_1K 78.9µs ± 0% 79.5µs ± 2% ~ (p=0.469 n=10+10) FmtFprintfEmpty 58.5ns ± 0% 58.5ns ± 0% ~ (all equal) GobEncode 12.0ms ± 1% 12.1ms ± 0% ~ (p=0.075 n=10+10) Revcomp 669ms ± 0% 668ms ± 0% ~ (p=0.091 n=7+9) Mandelbrot200 5.35ms ± 0% 5.36ms ± 0% +0.07% (p=0.000 n=9+9) RegexpMatchMedium_1K 52.1µs ± 0% 52.1µs ± 0% +0.10% (p=0.000 n=9+9) Fannkuch11 3.25s ± 0% 3.26s ± 0% +0.36% (p=0.000 n=9+10) FmtFprintfString 114ns ± 1% 115ns ± 0% +0.52% (p=0.011 n=10+10) JSONEncode 20.2ms ± 0% 20.3ms ± 0% +0.65% (p=0.000 n=10+10) Template 91.3ms ± 0% 92.3ms ± 0% +1.08% (p=0.000 n=10+10) TimeFormat 484ns ± 0% 495ns ± 1% +2.30% (p=0.000 n=9+10) There are some opportunities to improve this change further by adding patterns to match the "extended register" versions of ADD/SUB/CMP, but I think that should be evaluated on its own. The regressions in Template and TimeFormat would likely be recovered by this, as they seem to be due to generating: ubfiz x0, x0, #3, #8 add x1, x2, x0 instead of add x1, x2, x0, lsl #3 Change-Id: I5644a8d70ac7a98e784a377a2b76ab47a3415a4b Reviewed-on: https://go-review.googlesource.com/88355 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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