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1786ecd502
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14 Commits

Author SHA1 Message Date
Ben Shi
1786ecd502 cmd/compile: eliminate WASM's redundant extension & wrapping 
This CL eliminates unnecessary pairs of I32WrapI64 and
I64ExtendI32U generated by the WASM backend for IF
statements. And it makes the total size of pkg/js_wasm/
decreases about 490KB.

Change-Id: I16b0abb686c4e30d5624323166ec2d0ec57dbe2d
Reviewed-on: https://go-review.googlesource.com/c/go/+/191758
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Richard Musiol <neelance@gmail.com>
 2019-08-30 21:20:03 +00:00
Josh Bleecher Snyder
870cfe6484 test/codegen: gofmt 
Change-Id: I33f5b5051e5f75aa264ec656926223c5a3c09c1b
Reviewed-on: https://go-review.googlesource.com/c/go/+/167498
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Matt Layher <mdlayher@gmail.com>
 2019-03-13 21:44:45 +00:00
Lynn Boger
4ae49b5921 cmd/compile: use ANDCC, ORCC, XORCC to avoid CMP on ppc64x 
This change makes use of the cc versions of the AND, OR, XOR
instructions, omitting the need for a CMP instruction.

In many test programs and in the go binary, this reduces the
size of 20-30 functions by at least 1 instruction, many in
runtime.

Testcase added to test/codegen/comparisons.go

Change-Id: I6cc1ca8b80b065d7390749c625bc9784b0039adb
Reviewed-on: https://go-review.googlesource.com/c/143059
Reviewed-by: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
Reviewed-by: Michael Munday <mike.munday@ibm.com>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-11-09 19:40:52 +00:00
Lynn Boger
39fa301bdc test/codegen: enable more tests for ppc64/ppc64le 
Adding cases for ppc64,ppc64le to the codegen tests
where appropriate.

Change-Id: Idf8cbe88a4ab4406a4ef1ea777bd15a58b68f3ed
Reviewed-on: https://go-review.googlesource.com/c/142557
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2018-10-16 19:00:53 +00:00
Ben Shi
5aeecc4530 cmd/compile: optimize arm64's code with more shifted operations 
This CL optimizes arm64's NEG/MVN/TST/CMN with a shifted operand.

1. The total size of pkg/android_arm64 decreases about 0.2KB, excluding
cmd/compile/ .

2. The go1 benchmark shows no regression, excluding noise.
name                     old time/op    new time/op    delta
BinaryTree17-4              16.4s ± 1%     16.4s ± 1%    ~     (p=0.914 n=29+29)
Fannkuch11-4                8.72s ± 0%     8.72s ± 0%    ~     (p=0.274 n=30+29)
FmtFprintfEmpty-4           174ns ± 0%     174ns ± 0%    ~     (all equal)
FmtFprintfString-4          370ns ± 0%     370ns ± 0%    ~     (all equal)
FmtFprintfInt-4             419ns ± 0%     419ns ± 0%    ~     (all equal)
FmtFprintfIntInt-4          672ns ± 1%     675ns ± 2%    ~     (p=0.217 n=28+30)
FmtFprintfPrefixedInt-4     806ns ± 0%     806ns ± 0%    ~     (p=0.402 n=30+28)
FmtFprintfFloat-4          1.09µs ± 0%    1.09µs ± 0%  +0.02%  (p=0.011 n=22+27)
FmtManyArgs-4              2.67µs ± 0%    2.68µs ± 0%    ~     (p=0.279 n=29+30)
GobDecode-4                33.1ms ± 1%    33.1ms ± 0%    ~     (p=0.052 n=28+29)
GobEncode-4                29.6ms ± 0%    29.6ms ± 0%  +0.08%  (p=0.013 n=28+29)
Gzip-4                      1.38s ± 2%     1.39s ± 2%    ~     (p=0.071 n=29+29)
Gunzip-4                    139ms ± 0%     139ms ± 0%    ~     (p=0.265 n=29+29)
HTTPClientServer-4          789µs ± 4%     785µs ± 4%    ~     (p=0.206 n=29+28)
JSONEncode-4               49.7ms ± 0%    49.6ms ± 0%  -0.24%  (p=0.000 n=30+30)
JSONDecode-4                266ms ± 1%     267ms ± 1%  +0.34%  (p=0.000 n=30+30)
Mandelbrot200-4            16.6ms ± 0%    16.6ms ± 0%    ~     (p=0.835 n=28+30)
GoParse-4                  15.9ms ± 0%    15.8ms ± 0%  -0.29%  (p=0.000 n=27+30)
RegexpMatchEasy0_32-4       380ns ± 0%     381ns ± 0%  +0.18%  (p=0.000 n=30+30)
RegexpMatchEasy0_1K-4      1.18µs ± 0%    1.19µs ± 0%  +0.23%  (p=0.000 n=30+30)
RegexpMatchEasy1_32-4       357ns ± 0%     358ns ± 0%  +0.28%  (p=0.000 n=29+29)
RegexpMatchEasy1_1K-4      2.04µs ± 0%    2.04µs ± 0%  +0.06%  (p=0.006 n=30+30)
RegexpMatchMedium_32-4      589ns ± 0%     590ns ± 0%  +0.24%  (p=0.000 n=28+30)
RegexpMatchMedium_1K-4      162µs ± 0%     162µs ± 0%  -0.01%  (p=0.027 n=26+29)
RegexpMatchHard_32-4       9.58µs ± 0%    9.58µs ± 0%    ~     (p=0.935 n=30+30)
RegexpMatchHard_1K-4        287µs ± 0%     287µs ± 0%    ~     (p=0.387 n=29+30)
Revcomp-4                   2.50s ± 0%     2.50s ± 0%  -0.10%  (p=0.020 n=28+28)
Template-4                  310ms ± 0%     310ms ± 1%    ~     (p=0.406 n=30+30)
TimeParse-4                1.68µs ± 0%    1.68µs ± 0%  +0.03%  (p=0.014 n=30+17)
TimeFormat-4               1.65µs ± 0%    1.66µs ± 0%  +0.32%  (p=0.000 n=27+29)
[Geo mean]                  247µs          247µs       +0.05%

name                     old speed      new speed      delta
GobDecode-4              23.2MB/s ± 0%  23.2MB/s ± 0%  -0.08%  (p=0.032 n=27+29)
GobEncode-4              26.0MB/s ± 0%  25.9MB/s ± 0%  -0.10%  (p=0.011 n=29+29)
Gzip-4                   14.1MB/s ± 2%  14.0MB/s ± 2%    ~     (p=0.081 n=29+29)
Gunzip-4                  139MB/s ± 0%   139MB/s ± 0%    ~     (p=0.290 n=29+29)
JSONEncode-4             39.0MB/s ± 0%  39.1MB/s ± 0%  +0.25%  (p=0.000 n=29+30)
JSONDecode-4             7.30MB/s ± 1%  7.28MB/s ± 1%  -0.33%  (p=0.000 n=30+30)
GoParse-4                3.65MB/s ± 0%  3.66MB/s ± 0%  +0.29%  (p=0.000 n=27+30)
RegexpMatchEasy0_32-4    84.1MB/s ± 0%  84.0MB/s ± 0%  -0.17%  (p=0.000 n=30+28)
RegexpMatchEasy0_1K-4     864MB/s ± 0%   862MB/s ± 0%  -0.24%  (p=0.000 n=30+30)
RegexpMatchEasy1_32-4    89.5MB/s ± 0%  89.3MB/s ± 0%  -0.18%  (p=0.000 n=28+24)
RegexpMatchEasy1_1K-4     502MB/s ± 0%   502MB/s ± 0%  -0.05%  (p=0.008 n=30+29)
RegexpMatchMedium_32-4   1.70MB/s ± 0%  1.69MB/s ± 0%  -0.59%  (p=0.000 n=29+30)
RegexpMatchMedium_1K-4   6.31MB/s ± 0%  6.31MB/s ± 0%  +0.05%  (p=0.005 n=30+26)
RegexpMatchHard_32-4     3.34MB/s ± 0%  3.34MB/s ± 0%    ~     (all equal)
RegexpMatchHard_1K-4     3.57MB/s ± 0%  3.57MB/s ± 0%    ~     (all equal)
Revcomp-4                 102MB/s ± 0%   102MB/s ± 0%  +0.10%  (p=0.022 n=28+28)
Template-4               6.26MB/s ± 0%  6.26MB/s ± 1%    ~     (p=0.768 n=30+30)
[Geo mean]               24.2MB/s       24.1MB/s       -0.08%

Change-Id: I494f9db7f8a568a00e9c74ae25086a58b2221683
Reviewed-on: https://go-review.googlesource.com/137976
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
 2018-09-28 15:05:17 +00:00
Ben Shi
031a35ec84 cmd/compile: optimize 386's comparison 
Optimization of "(CMPconst [0] (ANDL x y)) -> (TESTL x y)" only
get benefits if there is no further use of the result of x&y. A
condition of uses==1 will have slight improvements.

1. The code size of pkg/linux_386 decreases about 300 bytes, excluding
cmd/compile/.

2. The go1 benchmark shows no regression, and even a slight improvement
in test case FmtFprintfEmpty-4, excluding noise.

name                     old time/op    new time/op    delta
BinaryTree17-4              3.34s ± 3%     3.32s ± 2%    ~     (p=0.197 n=30+30)
Fannkuch11-4                3.48s ± 2%     3.47s ± 1%  -0.33%  (p=0.015 n=30+30)
FmtFprintfEmpty-4          46.3ns ± 4%    44.8ns ± 4%  -3.33%  (p=0.000 n=30+30)
FmtFprintfString-4         78.8ns ± 7%    77.3ns ± 5%    ~     (p=0.098 n=30+26)
FmtFprintfInt-4            90.2ns ± 1%    90.0ns ± 7%  -0.23%  (p=0.027 n=18+30)
FmtFprintfIntInt-4          144ns ± 4%     143ns ± 5%    ~     (p=0.945 n=30+29)
FmtFprintfPrefixedInt-4     180ns ± 4%     180ns ± 5%    ~     (p=0.858 n=30+30)
FmtFprintfFloat-4           409ns ± 4%     406ns ± 3%  -0.87%  (p=0.028 n=30+30)
FmtManyArgs-4               611ns ± 5%     608ns ± 4%    ~     (p=0.812 n=30+30)
GobDecode-4                7.30ms ± 5%    7.26ms ± 5%    ~     (p=0.522 n=30+29)
GobEncode-4                6.90ms ± 7%    6.82ms ± 4%    ~     (p=0.086 n=29+28)
Gzip-4                      396ms ± 4%     400ms ± 4%  +0.99%  (p=0.026 n=30+30)
Gunzip-4                   41.1ms ± 3%    41.2ms ± 3%    ~     (p=0.495 n=30+30)
HTTPClientServer-4         63.7µs ± 3%    63.3µs ± 2%    ~     (p=0.113 n=29+29)
JSONEncode-4               16.1ms ± 2%    16.1ms ± 2%  -0.30%  (p=0.041 n=30+30)
JSONDecode-4               60.9ms ± 3%    61.2ms ± 6%    ~     (p=0.187 n=30+30)
Mandelbrot200-4            5.17ms ± 2%    5.19ms ± 3%    ~     (p=0.676 n=30+30)
GoParse-4                  3.28ms ± 3%    3.25ms ± 2%  -0.97%  (p=0.002 n=30+30)
RegexpMatchEasy0_32-4       103ns ± 4%     104ns ± 4%    ~     (p=0.352 n=30+30)
RegexpMatchEasy0_1K-4       849ns ± 2%     845ns ± 2%    ~     (p=0.381 n=30+30)
RegexpMatchEasy1_32-4       113ns ± 4%     113ns ± 4%    ~     (p=0.795 n=30+30)
RegexpMatchEasy1_1K-4      1.03µs ± 3%    1.03µs ± 4%    ~     (p=0.275 n=25+30)
RegexpMatchMedium_32-4      132ns ± 3%     132ns ± 3%    ~     (p=0.970 n=30+30)
RegexpMatchMedium_1K-4     41.4µs ± 3%    41.4µs ± 3%    ~     (p=0.212 n=30+30)
RegexpMatchHard_32-4       2.22µs ± 4%    2.22µs ± 4%    ~     (p=0.399 n=30+30)
RegexpMatchHard_1K-4       67.2µs ± 3%    67.6µs ± 4%    ~     (p=0.359 n=30+30)
Revcomp-4                   1.84s ± 2%     1.83s ± 2%    ~     (p=0.532 n=30+30)
Template-4                 69.1ms ± 4%    68.8ms ± 3%    ~     (p=0.146 n=30+30)
TimeParse-4                 441ns ± 3%     442ns ± 3%    ~     (p=0.154 n=30+30)
TimeFormat-4                413ns ± 3%     414ns ± 3%    ~     (p=0.275 n=30+30)
[Geo mean]                 66.2µs         66.0µs       -0.28%

name                     old speed      new speed      delta
GobDecode-4               105MB/s ± 5%   106MB/s ± 5%    ~     (p=0.514 n=30+29)
GobEncode-4               111MB/s ± 5%   113MB/s ± 4%  +1.37%  (p=0.046 n=28+28)
Gzip-4                   49.1MB/s ± 4%  48.6MB/s ± 4%  -0.98%  (p=0.028 n=30+30)
Gunzip-4                  472MB/s ± 4%   472MB/s ± 3%    ~     (p=0.496 n=30+30)
JSONEncode-4              120MB/s ± 2%   121MB/s ± 2%  +0.29%  (p=0.042 n=30+30)
JSONDecode-4             31.9MB/s ± 3%  31.7MB/s ± 6%    ~     (p=0.186 n=30+30)
GoParse-4                17.6MB/s ± 3%  17.8MB/s ± 2%  +0.98%  (p=0.002 n=30+30)
RegexpMatchEasy0_32-4     309MB/s ± 4%   307MB/s ± 4%    ~     (p=0.501 n=30+30)
RegexpMatchEasy0_1K-4    1.21GB/s ± 2%  1.21GB/s ± 2%    ~     (p=0.301 n=30+30)
RegexpMatchEasy1_32-4     283MB/s ± 4%   282MB/s ± 3%    ~     (p=0.877 n=30+30)
RegexpMatchEasy1_1K-4    1.00GB/s ± 3%  0.99GB/s ± 4%    ~     (p=0.276 n=25+30)
RegexpMatchMedium_32-4   7.54MB/s ± 3%  7.55MB/s ± 3%    ~     (p=0.528 n=30+30)
RegexpMatchMedium_1K-4   24.7MB/s ± 3%  24.7MB/s ± 3%    ~     (p=0.203 n=30+30)
RegexpMatchHard_32-4     14.4MB/s ± 4%  14.4MB/s ± 4%    ~     (p=0.407 n=30+30)
RegexpMatchHard_1K-4     15.3MB/s ± 3%  15.1MB/s ± 4%    ~     (p=0.306 n=30+30)
Revcomp-4                 138MB/s ± 2%   139MB/s ± 2%    ~     (p=0.520 n=30+30)
Template-4               28.1MB/s ± 4%  28.2MB/s ± 3%    ~     (p=0.149 n=30+30)
[Geo mean]               81.5MB/s       81.5MB/s       +0.06%

Change-Id: I7f75425f79eec93cdd8fdd94db13ad4f61b6a2f5
Reviewed-on: https://go-review.googlesource.com/133657
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2018-09-07 01:20:45 +00:00
Ben Shi
067dfce21f cmd/compile: optimize ARM's comparision 
Optimize (CMPconst [0] (ADD x y)) to (CMN x y) will only get benefits
when the result of the addition is no longer used, otherwise there
might be even performance drop. And this CL fixes that issue for
CMP/CMN/TST/TEQ.

There is little regression in the go1 benchmark (excluding noise),
and the test case JSONDecode-4 even gets improvement.

name                     old time/op    new time/op    delta
BinaryTree17-4              21.6s ± 1%     21.6s ± 0%  -0.22%  (p=0.013 n=30+30)
Fannkuch11-4                11.1s ± 0%     11.1s ± 0%  +0.11%  (p=0.000 n=30+29)
FmtFprintfEmpty-4           297ns ± 0%     297ns ± 0%  +0.08%  (p=0.007 n=26+28)
FmtFprintfString-4          589ns ± 1%     589ns ± 0%    ~     (p=0.659 n=30+25)
FmtFprintfInt-4             644ns ± 1%     650ns ± 0%  +0.88%  (p=0.000 n=30+24)
FmtFprintfIntInt-4          964ns ± 0%     977ns ± 0%  +1.33%  (p=0.000 n=30+30)
FmtFprintfPrefixedInt-4    1.06µs ± 0%    1.07µs ± 0%  +1.31%  (p=0.000 n=29+27)
FmtFprintfFloat-4          1.89µs ± 0%    1.92µs ± 0%  +1.25%  (p=0.000 n=29+29)
FmtManyArgs-4              3.63µs ± 0%    3.67µs ± 0%  +1.33%  (p=0.000 n=29+27)
GobDecode-4                38.1ms ± 1%    37.9ms ± 1%  -0.60%  (p=0.000 n=29+29)
GobEncode-4                35.3ms ± 2%    35.2ms ± 1%    ~     (p=0.286 n=30+30)
Gzip-4                      2.36s ± 0%     2.37s ± 2%    ~     (p=0.277 n=24+28)
Gunzip-4                    264ms ± 1%     264ms ± 1%    ~     (p=0.104 n=28+30)
HTTPClientServer-4         1.04ms ± 4%    1.02ms ± 4%  -1.65%  (p=0.000 n=28+28)
JSONEncode-4               78.5ms ± 1%    79.6ms ± 1%  +1.34%  (p=0.000 n=27+28)
JSONDecode-4                379ms ± 4%     352ms ± 5%  -7.09%  (p=0.000 n=29+30)
Mandelbrot200-4            17.6ms ± 0%    17.6ms ± 0%    ~     (p=0.206 n=28+29)
GoParse-4                  21.9ms ± 1%    22.1ms ± 1%  +0.87%  (p=0.000 n=28+26)
RegexpMatchEasy0_32-4       631ns ± 0%     641ns ± 0%  +1.63%  (p=0.000 n=29+30)
RegexpMatchEasy0_1K-4      4.11µs ± 0%    4.11µs ± 0%    ~     (p=0.700 n=30+30)
RegexpMatchEasy1_32-4       670ns ± 0%     679ns ± 0%  +1.37%  (p=0.000 n=21+30)
RegexpMatchEasy1_1K-4      5.31µs ± 0%    5.26µs ± 0%  -1.03%  (p=0.000 n=25+28)
RegexpMatchMedium_32-4      905ns ± 0%     906ns ± 0%  +0.14%  (p=0.001 n=30+30)
RegexpMatchMedium_1K-4      192µs ± 0%     191µs ± 0%  -0.45%  (p=0.000 n=29+27)
RegexpMatchHard_32-4       11.8µs ± 0%    11.7µs ± 0%  -0.39%  (p=0.000 n=29+28)
RegexpMatchHard_1K-4        347µs ± 0%     347µs ± 0%    ~     (p=0.084 n=29+30)
Revcomp-4                  37.5ms ± 1%    37.5ms ± 1%    ~     (p=0.279 n=29+29)
Template-4                  519ms ± 2%     519ms ± 2%    ~     (p=0.652 n=28+29)
TimeParse-4                2.83µs ± 0%    2.78µs ± 0%  -1.90%  (p=0.000 n=27+28)
TimeFormat-4               5.79µs ± 0%    5.60µs ± 0%  -3.23%  (p=0.000 n=29+29)
[Geo mean]                  331µs          330µs       -0.16%

name                     old speed      new speed      delta
GobDecode-4              20.1MB/s ± 1%  20.3MB/s ± 1%  +0.61%  (p=0.000 n=29+29)
GobEncode-4              21.7MB/s ± 2%  21.8MB/s ± 1%    ~     (p=0.294 n=30+30)
Gzip-4                   8.23MB/s ± 1%  8.20MB/s ± 2%    ~     (p=0.099 n=26+28)
Gunzip-4                 73.5MB/s ± 1%  73.4MB/s ± 1%    ~     (p=0.107 n=28+30)
JSONEncode-4             24.7MB/s ± 1%  24.4MB/s ± 1%  -1.32%  (p=0.000 n=27+28)
JSONDecode-4             5.13MB/s ± 4%  5.52MB/s ± 5%  +7.65%  (p=0.000 n=29+30)
GoParse-4                2.65MB/s ± 1%  2.63MB/s ± 1%  -0.87%  (p=0.000 n=28+26)
RegexpMatchEasy0_32-4    50.7MB/s ± 0%  49.9MB/s ± 0%  -1.58%  (p=0.000 n=29+29)
RegexpMatchEasy0_1K-4     249MB/s ± 0%   249MB/s ± 0%    ~     (p=0.342 n=30+28)
RegexpMatchEasy1_32-4    47.7MB/s ± 0%  47.1MB/s ± 0%  -1.39%  (p=0.000 n=26+30)
RegexpMatchEasy1_1K-4     193MB/s ± 0%   195MB/s ± 0%  +1.04%  (p=0.000 n=25+28)
RegexpMatchMedium_32-4   1.10MB/s ± 0%  1.10MB/s ± 0%  -0.42%  (p=0.000 n=30+26)
RegexpMatchMedium_1K-4   5.33MB/s ± 0%  5.36MB/s ± 0%  +0.43%  (p=0.000 n=29+29)
RegexpMatchHard_32-4     2.72MB/s ± 0%  2.73MB/s ± 0%  +0.37%  (p=0.000 n=29+30)
RegexpMatchHard_1K-4     2.95MB/s ± 0%  2.95MB/s ± 0%    ~     (all equal)
Revcomp-4                67.8MB/s ± 1%  67.7MB/s ± 1%    ~     (p=0.273 n=29+29)
Template-4               3.74MB/s ± 2%  3.74MB/s ± 2%    ~     (p=0.665 n=28+29)
[Geo mean]               15.2MB/s       15.2MB/s       +0.21%

Change-Id: Ifed1fb8cc02d5ca52c8bc6c21b6b5bf6dbb2701a
Reviewed-on: https://go-review.googlesource.com/132115
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
 2018-09-05 14:54:08 +00:00
Ben Shi
0e9f1de0b7 cmd/compile: optimize arm64's comparison 
Add more optimization with TST/CMN.

1. A tiny benchmark shows more than 12% improvement.
TSTCMN-4                    378µs ± 0%     332µs ± 0%  -12.15%  (p=0.000 n=30+27)
(https://github.com/benshi001/ugo1/blob/master/tstcmn_test.go)

2. There is little regression in the go1 benchmark, excluding noise.

name                     old time/op    new time/op    delta
BinaryTree17-4              19.1s ± 0%     19.1s ± 0%    ~     (p=0.994 n=28+29)
Fannkuch11-4                10.0s ± 0%     10.0s ± 0%    ~     (p=0.198 n=30+25)
FmtFprintfEmpty-4           233ns ± 0%     233ns ± 0%  +0.14%  (p=0.002 n=24+30)
FmtFprintfString-4          428ns ± 0%     428ns ± 0%    ~     (all equal)
FmtFprintfInt-4             472ns ± 0%     472ns ± 0%    ~     (all equal)
FmtFprintfIntInt-4          725ns ± 0%     725ns ± 0%    ~     (all equal)
FmtFprintfPrefixedInt-4     889ns ± 0%     888ns ± 0%    ~     (p=0.632 n=28+30)
FmtFprintfFloat-4          1.20µs ± 0%    1.20µs ± 0%  +0.05%  (p=0.001 n=18+30)
FmtManyArgs-4              3.00µs ± 0%    2.99µs ± 0%  -0.07%  (p=0.001 n=27+30)
GobDecode-4                42.1ms ± 0%    42.2ms ± 0%  +0.29%  (p=0.000 n=28+28)
GobEncode-4                38.6ms ± 9%    38.8ms ± 9%    ~     (p=0.912 n=30+30)
Gzip-4                      2.07s ± 1%     2.05s ± 1%  -0.64%  (p=0.000 n=29+30)
Gunzip-4                    175ms ± 0%     175ms ± 0%  -0.15%  (p=0.001 n=30+30)
HTTPClientServer-4          872µs ± 5%     880µs ± 6%    ~     (p=0.196 n=30+29)
JSONEncode-4               88.5ms ± 1%    89.8ms ± 1%  +1.49%  (p=0.000 n=23+24)
JSONDecode-4                393ms ± 1%     390ms ± 1%  -0.89%  (p=0.000 n=28+30)
Mandelbrot200-4            19.5ms ± 0%    19.5ms ± 0%    ~     (p=0.405 n=29+28)
GoParse-4                  19.9ms ± 0%    20.0ms ± 0%  +0.27%  (p=0.000 n=30+30)
RegexpMatchEasy0_32-4       431ns ± 0%     431ns ± 0%    ~     (p=1.000 n=30+30)
RegexpMatchEasy0_1K-4      1.61µs ± 0%    1.61µs ± 0%    ~     (p=0.527 n=26+26)
RegexpMatchEasy1_32-4       443ns ± 0%     443ns ± 0%    ~     (all equal)
RegexpMatchEasy1_1K-4      2.58µs ± 1%    2.58µs ± 1%    ~     (p=0.578 n=27+25)
RegexpMatchMedium_32-4      740ns ± 0%     740ns ± 0%    ~     (p=0.357 n=30+30)
RegexpMatchMedium_1K-4      223µs ± 0%     223µs ± 0%  +0.16%  (p=0.000 n=30+29)
RegexpMatchHard_32-4       12.3µs ± 0%    12.3µs ± 0%    ~     (p=0.236 n=27+27)
RegexpMatchHard_1K-4        371µs ± 0%     371µs ± 0%  +0.09%  (p=0.000 n=30+27)
Revcomp-4                   2.85s ± 0%     2.85s ± 0%    ~     (p=0.057 n=28+25)
Template-4                  408ms ± 1%     409ms ± 1%    ~     (p=0.117 n=29+29)
TimeParse-4                1.93µs ± 0%    1.93µs ± 0%    ~     (p=0.535 n=29+28)
TimeFormat-4               1.99µs ± 0%    1.99µs ± 0%    ~     (p=0.168 n=29+28)
[Geo mean]                  306µs          307µs       +0.07%

name                     old speed      new speed      delta
GobDecode-4              18.3MB/s ± 0%  18.2MB/s ± 0%  -0.31%  (p=0.000 n=28+29)
GobEncode-4              19.9MB/s ± 8%  19.8MB/s ± 9%    ~     (p=0.923 n=30+30)
Gzip-4                   9.39MB/s ± 1%  9.45MB/s ± 1%  +0.65%  (p=0.000 n=29+30)
Gunzip-4                  111MB/s ± 0%   111MB/s ± 0%  +0.15%  (p=0.001 n=30+30)
JSONEncode-4             21.9MB/s ± 1%  21.6MB/s ± 1%  -1.45%  (p=0.000 n=23+23)
JSONDecode-4             4.94MB/s ± 1%  4.98MB/s ± 1%  +0.84%  (p=0.000 n=27+30)
GoParse-4                2.91MB/s ± 0%  2.90MB/s ± 0%  -0.34%  (p=0.000 n=21+22)
RegexpMatchEasy0_32-4    74.1MB/s ± 0%  74.1MB/s ± 0%    ~     (p=0.469 n=29+28)
RegexpMatchEasy0_1K-4     634MB/s ± 0%   634MB/s ± 0%    ~     (p=0.978 n=24+28)
RegexpMatchEasy1_32-4    72.2MB/s ± 0%  72.2MB/s ± 0%    ~     (p=0.064 n=27+29)
RegexpMatchEasy1_1K-4     396MB/s ± 1%   396MB/s ± 1%    ~     (p=0.583 n=27+25)
RegexpMatchMedium_32-4   1.35MB/s ± 0%  1.35MB/s ± 0%    ~     (all equal)
RegexpMatchMedium_1K-4   4.60MB/s ± 0%  4.59MB/s ± 0%  -0.14%  (p=0.000 n=30+26)
RegexpMatchHard_32-4     2.61MB/s ± 0%  2.61MB/s ± 0%    ~     (all equal)
RegexpMatchHard_1K-4     2.76MB/s ± 0%  2.76MB/s ± 0%    ~     (all equal)
Revcomp-4                89.1MB/s ± 0%  89.1MB/s ± 0%    ~     (p=0.059 n=28+25)
Template-4               4.75MB/s ± 1%  4.75MB/s ± 1%    ~     (p=0.106 n=29+29)
[Geo mean]               18.3MB/s       18.3MB/s       -0.07%

Change-Id: I3cd76ce63e84b0c3cebabf9fa3573b76a7343899
Reviewed-on: https://go-review.googlesource.com/124935
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
 2018-09-05 02:51:28 +00:00
Ben Shi
2b69ad0b3c cmd/compile: optimize arm's comparison 
The CMP/CMN/TST/TEQ perform similar to SUB/ADD/AND/XOR except
the result is abondoned, and only NZCV flags are affected.

This CL implements further optimization with them.

1. A micro benchmark test gets more than 9% improvment.
TSTTEQ-4                   6.99ms ± 0%    6.35ms ± 0%  -9.15%  (p=0.000 n=33+36)
(https://github.com/benshi001/ugo1/blob/master/tstteq2_test.go)

2. The go1 benckmark shows no regression, excluding noise.
name                     old time/op    new time/op    delta
BinaryTree17-4              25.7s ± 1%     25.7s ± 1%    ~     (p=0.830 n=40+40)
Fannkuch11-4                13.3s ± 0%     13.2s ± 0%  -0.65%  (p=0.000 n=40+34)
FmtFprintfEmpty-4           394ns ± 0%     394ns ± 0%    ~     (p=0.819 n=40+40)
FmtFprintfString-4          677ns ± 0%     677ns ± 0%  +0.06%  (p=0.039 n=39+40)
FmtFprintfInt-4             707ns ± 0%     706ns ± 0%  -0.14%  (p=0.000 n=40+39)
FmtFprintfIntInt-4         1.04µs ± 0%    1.04µs ± 0%  +0.10%  (p=0.000 n=29+31)
FmtFprintfPrefixedInt-4    1.10µs ± 0%    1.11µs ± 0%  +0.65%  (p=0.000 n=39+37)
FmtFprintfFloat-4          2.27µs ± 0%    2.26µs ± 0%  -0.53%  (p=0.000 n=39+40)
FmtManyArgs-4              3.96µs ± 0%    3.96µs ± 0%  +0.10%  (p=0.000 n=39+40)
GobDecode-4                53.4ms ± 1%    52.8ms ± 2%  -1.10%  (p=0.000 n=39+39)
GobEncode-4                50.3ms ± 3%    50.4ms ± 2%    ~     (p=0.089 n=40+39)
Gzip-4                      2.62s ± 0%     2.64s ± 0%  +0.60%  (p=0.000 n=40+39)
Gunzip-4                    312ms ± 0%     312ms ± 0%  +0.02%  (p=0.030 n=40+39)
HTTPClientServer-4         1.01ms ± 7%    0.98ms ± 7%  -2.37%  (p=0.000 n=40+39)
JSONEncode-4                126ms ± 1%     126ms ± 1%  -0.38%  (p=0.004 n=39+39)
JSONDecode-4                423ms ± 0%     426ms ± 2%  +0.72%  (p=0.001 n=39+40)
Mandelbrot200-4            18.4ms ± 0%    18.4ms ± 0%  +0.04%  (p=0.000 n=38+40)
GoParse-4                  22.8ms ± 0%    22.6ms ± 0%  -0.68%  (p=0.000 n=35+40)
RegexpMatchEasy0_32-4       699ns ± 0%     704ns ± 0%  +0.73%  (p=0.000 n=27+40)
RegexpMatchEasy0_1K-4      4.27µs ± 0%    4.26µs ± 0%  -0.09%  (p=0.000 n=35+38)
RegexpMatchEasy1_32-4       741ns ± 0%     735ns ± 0%  -0.85%  (p=0.000 n=40+35)
RegexpMatchEasy1_1K-4      5.53µs ± 0%    5.49µs ± 0%  -0.69%  (p=0.000 n=39+40)
RegexpMatchMedium_32-4     1.07µs ± 0%    1.04µs ± 2%  -2.34%  (p=0.000 n=40+40)
RegexpMatchMedium_1K-4      261µs ± 0%     261µs ± 0%  -0.16%  (p=0.000 n=40+39)
RegexpMatchHard_32-4       14.9µs ± 0%    14.9µs ± 0%  -0.18%  (p=0.000 n=39+40)
RegexpMatchHard_1K-4        445µs ± 0%     446µs ± 0%  +0.09%  (p=0.000 n=36+34)
Revcomp-4                  41.8ms ± 1%    41.8ms ± 1%    ~     (p=0.595 n=39+38)
Template-4                  530ms ± 1%     528ms ± 1%  -0.49%  (p=0.000 n=40+40)
TimeParse-4                3.39µs ± 0%    3.42µs ± 0%  +0.98%  (p=0.000 n=36+38)
TimeFormat-4               6.12µs ± 0%    6.07µs ± 0%  -0.81%  (p=0.000 n=34+38)
[Geo mean]                  384µs          383µs       -0.24%

name                     old speed      new speed      delta
GobDecode-4              14.4MB/s ± 1%  14.5MB/s ± 2%  +1.11%  (p=0.000 n=39+39)
GobEncode-4              15.3MB/s ± 3%  15.2MB/s ± 2%    ~     (p=0.104 n=40+39)
Gzip-4                   7.40MB/s ± 1%  7.36MB/s ± 0%  -0.60%  (p=0.000 n=40+39)
Gunzip-4                 62.2MB/s ± 0%  62.1MB/s ± 0%  -0.02%  (p=0.047 n=40+39)
JSONEncode-4             15.4MB/s ± 1%  15.4MB/s ± 2%  +0.39%  (p=0.002 n=39+39)
JSONDecode-4             4.59MB/s ± 0%  4.56MB/s ± 2%  -0.71%  (p=0.000 n=39+40)
GoParse-4                2.54MB/s ± 0%  2.56MB/s ± 0%  +0.72%  (p=0.000 n=26+40)
RegexpMatchEasy0_32-4    45.8MB/s ± 0%  45.4MB/s ± 0%  -0.75%  (p=0.000 n=38+40)
RegexpMatchEasy0_1K-4     240MB/s ± 0%   240MB/s ± 0%  +0.09%  (p=0.000 n=35+38)
RegexpMatchEasy1_32-4    43.1MB/s ± 0%  43.5MB/s ± 0%  +0.84%  (p=0.000 n=40+39)
RegexpMatchEasy1_1K-4     185MB/s ± 0%   186MB/s ± 0%  +0.69%  (p=0.000 n=39+40)
RegexpMatchMedium_32-4    936kB/s ± 1%   959kB/s ± 2%  +2.38%  (p=0.000 n=40+40)
RegexpMatchMedium_1K-4   3.92MB/s ± 0%  3.93MB/s ± 0%  +0.18%  (p=0.000 n=39+40)
RegexpMatchHard_32-4     2.15MB/s ± 0%  2.15MB/s ± 0%  +0.19%  (p=0.000 n=40+40)
RegexpMatchHard_1K-4     2.30MB/s ± 0%  2.30MB/s ± 0%    ~     (all equal)
Revcomp-4                60.8MB/s ± 1%  60.8MB/s ± 1%    ~     (p=0.600 n=39+38)
Template-4               3.66MB/s ± 1%  3.68MB/s ± 1%  +0.46%  (p=0.000 n=40+40)
[Geo mean]               12.8MB/s       12.8MB/s       +0.27%

Change-Id: I849161169ecf0876a04b7c1d3990fa8d1435215e
Reviewed-on: https://go-review.googlesource.com/122855
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
 2018-08-27 15:49:46 +00:00
Ben Shi
556971316f cmd/compile: optimize 386's comparison 
CMPL/CMPW/CMPB can take a memory operand on 386, and this CL
implements that optimization.

1. The total size of pkg/linux_386 decreases about 45KB, excluding
cmd/compile.

2. The go1 benchmark shows a little improvement.
name                     old time/op    new time/op    delta
BinaryTree17-4              3.36s ± 2%     3.37s ± 3%    ~     (p=0.537 n=40+40)
Fannkuch11-4                3.59s ± 1%     3.53s ± 2%  -1.58%  (p=0.000 n=40+40)
FmtFprintfEmpty-4          46.0ns ± 3%    45.8ns ± 3%    ~     (p=0.249 n=40+40)
FmtFprintfString-4         80.0ns ± 4%    78.8ns ± 3%  -1.49%  (p=0.001 n=40+40)
FmtFprintfInt-4            89.7ns ± 2%    90.3ns ± 2%  +0.74%  (p=0.003 n=40+40)
FmtFprintfIntInt-4          144ns ± 3%     143ns ± 3%  -0.95%  (p=0.003 n=40+40)
FmtFprintfPrefixedInt-4     181ns ± 4%     180ns ± 2%    ~     (p=0.103 n=40+40)
FmtFprintfFloat-4           412ns ± 3%     408ns ± 4%  -0.97%  (p=0.018 n=40+40)
FmtManyArgs-4               607ns ± 4%     605ns ± 4%    ~     (p=0.148 n=40+40)
GobDecode-4                7.19ms ± 4%    7.24ms ± 5%    ~     (p=0.340 n=40+40)
GobEncode-4                7.04ms ± 9%    6.99ms ± 9%    ~     (p=0.289 n=40+40)
Gzip-4                      400ms ± 6%     398ms ± 5%    ~     (p=0.168 n=40+40)
Gunzip-4                   41.2ms ± 3%    41.7ms ± 3%  +1.40%  (p=0.001 n=40+40)
HTTPClientServer-4         62.5µs ± 1%    62.1µs ± 2%  -0.61%  (p=0.000 n=37+37)
JSONEncode-4               20.7ms ± 4%    20.4ms ± 3%  -1.60%  (p=0.000 n=40+40)
JSONDecode-4               69.4ms ± 4%    69.2ms ± 6%    ~     (p=0.177 n=40+40)
Mandelbrot200-4            5.22ms ± 6%    5.21ms ± 3%    ~     (p=0.531 n=40+40)
GoParse-4                  3.29ms ± 3%    3.28ms ± 3%    ~     (p=0.321 n=40+39)
RegexpMatchEasy0_32-4       104ns ± 4%     103ns ± 7%  -0.89%  (p=0.040 n=40+40)
RegexpMatchEasy0_1K-4       852ns ± 3%     853ns ± 2%    ~     (p=0.357 n=40+40)
RegexpMatchEasy1_32-4       113ns ± 8%     113ns ± 3%    ~     (p=0.906 n=40+40)
RegexpMatchEasy1_1K-4      1.03µs ± 4%    1.03µs ± 5%    ~     (p=0.326 n=40+40)
RegexpMatchMedium_32-4      136ns ± 3%     133ns ± 3%  -2.31%  (p=0.000 n=40+40)
RegexpMatchMedium_1K-4     44.0µs ± 3%    43.7µs ± 3%    ~     (p=0.053 n=40+40)
RegexpMatchHard_32-4       2.27µs ± 3%    2.26µs ± 4%    ~     (p=0.391 n=40+40)
RegexpMatchHard_1K-4       68.0µs ± 3%    68.9µs ± 3%  +1.28%  (p=0.000 n=40+40)
Revcomp-4                   1.86s ± 5%     1.86s ± 2%    ~     (p=0.950 n=40+40)
Template-4                 73.4ms ± 4%    69.9ms ± 7%  -4.78%  (p=0.000 n=40+40)
TimeParse-4                 449ns ± 4%     441ns ± 5%  -1.76%  (p=0.000 n=40+40)
TimeFormat-4                416ns ± 3%     417ns ± 4%    ~     (p=0.304 n=40+40)
[Geo mean]                 67.7µs         67.3µs       -0.55%

name                     old speed      new speed      delta
GobDecode-4               107MB/s ± 4%   106MB/s ± 5%    ~     (p=0.336 n=40+40)
GobEncode-4               109MB/s ± 5%   110MB/s ± 9%    ~     (p=0.142 n=38+40)
Gzip-4                   48.5MB/s ± 5%  48.8MB/s ± 5%    ~     (p=0.172 n=40+40)
Gunzip-4                  472MB/s ± 3%   465MB/s ± 3%  -1.39%  (p=0.001 n=40+40)
JSONEncode-4             93.6MB/s ± 4%  95.1MB/s ± 3%  +1.61%  (p=0.000 n=40+40)
JSONDecode-4             28.0MB/s ± 3%  28.1MB/s ± 6%    ~     (p=0.181 n=40+40)
GoParse-4                17.6MB/s ± 3%  17.7MB/s ± 3%    ~     (p=0.350 n=40+39)
RegexpMatchEasy0_32-4     308MB/s ± 4%   311MB/s ± 6%  +0.96%  (p=0.025 n=40+40)
RegexpMatchEasy0_1K-4    1.20GB/s ± 3%  1.20GB/s ± 2%    ~     (p=0.317 n=40+40)
RegexpMatchEasy1_32-4     282MB/s ± 7%   282MB/s ± 3%    ~     (p=0.516 n=40+40)
RegexpMatchEasy1_1K-4     994MB/s ± 4%   991MB/s ± 5%    ~     (p=0.319 n=40+40)
RegexpMatchMedium_32-4   7.31MB/s ± 3%  7.49MB/s ± 3%  +2.46%  (p=0.000 n=40+40)
RegexpMatchMedium_1K-4   23.3MB/s ± 3%  23.4MB/s ± 3%    ~     (p=0.052 n=40+40)
RegexpMatchHard_32-4     14.1MB/s ± 3%  14.1MB/s ± 4%    ~     (p=0.391 n=40+40)
RegexpMatchHard_1K-4     15.1MB/s ± 3%  14.9MB/s ± 3%  -1.27%  (p=0.000 n=40+40)
Revcomp-4                 137MB/s ± 5%   137MB/s ± 2%    ~     (p=0.942 n=40+40)
Template-4               26.5MB/s ± 4%  27.8MB/s ± 7%  +5.03%  (p=0.000 n=40+40)
[Geo mean]               78.6MB/s       79.0MB/s       +0.57%

Change-Id: Idcacc6881ef57cd7dc33aa87b711282842b72a53
Reviewed-on: https://go-review.googlesource.com/126618
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2018-08-20 14:23:22 +00:00
Michael Munday
b65122f99a cmd/compile: optimize comparisons using load merging where available 
Multi-byte comparison operations were used on amd64, arm64, i386
and s390x for comparisons with constant arrays, but only amd64 and
i386 for comparisons with string constants. This CL combines the
check for platform capability, since they have the same requirements,
and also enables both on ppc64le which also supports load merging.

Note that these optimizations currently use little endian byte order
which results in byte reversal instructions on s390x. This should
be fixed at some point.

Change-Id: Ie612d13359b50c77f4d7c6e73fea4a59fa11f322
Reviewed-on: https://go-review.googlesource.com/102558
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2018-04-09 21:16:47 +00:00
Alberto Donizetti
a27cd4fd31 test/codegen: port tbz/tbnz arm64 tests 
And delete them from asm_test.

Change-Id: I34fcf85ae8ce09cd146fe4ce6a0ae7616bd97e2d
Reviewed-on: https://go-review.googlesource.com/102296
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
 2018-03-24 09:35:53 +00:00
Alberto Donizetti
fc6280d4b0 test/codegen: port direct comparisons with memory tests 
And remove them from asm_test.

Change-Id: I1ca29b40546d6de06f20bfd550ed8ff87f495454
Reviewed-on: https://go-review.googlesource.com/102115
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2018-03-22 17:20:09 +00:00
Alberto Donizetti
be371edd67 test/codegen: port comparisons tests to codegen 
And delete them from asm_test.

Change-Id: I64c512bfef3b3da6db5c5d29277675dade28b8ab
Reviewed-on: https://go-review.googlesource.com/101595
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
 2018-03-20 19:38:06 +00:00