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10 Commits

Author SHA1 Message Date
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
fanzha02
a19a83c8ef cmd/compile: optimize math.Float64(32)bits and math.Float64(32)frombits on arm64 
Use float <-> int register moves without conversion instead of stores
and loads to move float <-> int values.

Math package benchmark results.
name                 old time/op  new time/op  delta
Acosh                 153ns ± 0%   147ns ± 0%   -3.92%  (p=0.000 n=10+10)
Asinh                 183ns ± 0%   177ns ± 0%   -3.28%  (p=0.000 n=10+10)
Atanh                 157ns ± 0%   155ns ± 0%   -1.27%  (p=0.000 n=10+10)
Atan2                 118ns ± 0%   117ns ± 1%   -0.59%  (p=0.003 n=10+10)
Cbrt                  119ns ± 0%   114ns ± 0%   -4.20%  (p=0.000 n=10+10)
Copysign             7.51ns ± 0%  6.51ns ± 0%  -13.32%  (p=0.000 n=9+10)
Cos                  73.1ns ± 0%  70.6ns ± 0%   -3.42%  (p=0.000 n=10+10)
Cosh                  119ns ± 0%   121ns ± 0%   +1.68%  (p=0.000 n=10+9)
ExpGo                 154ns ± 0%   149ns ± 0%   -3.05%  (p=0.000 n=9+10)
Expm1                 101ns ± 0%    99ns ± 0%   -1.88%  (p=0.000 n=10+10)
Exp2Go                150ns ± 0%   146ns ± 0%   -2.67%  (p=0.000 n=10+10)
Abs                  7.01ns ± 0%  6.01ns ± 0%  -14.27%  (p=0.000 n=10+9)
Mod                   234ns ± 0%   212ns ± 0%   -9.40%  (p=0.000 n=9+10)
Frexp                34.5ns ± 0%  30.0ns ± 0%  -13.04%  (p=0.000 n=10+10)
Gamma                 112ns ± 0%   111ns ± 0%   -0.89%  (p=0.000 n=10+10)
Hypot                73.6ns ± 0%  68.6ns ± 0%   -6.79%  (p=0.000 n=10+10)
HypotGo              77.1ns ± 0%  72.1ns ± 0%   -6.49%  (p=0.000 n=10+10)
Ilogb                31.0ns ± 0%  28.0ns ± 0%   -9.68%  (p=0.000 n=10+10)
J0                    437ns ± 0%   434ns ± 0%   -0.62%  (p=0.000 n=10+10)
J1                    433ns ± 0%   431ns ± 0%   -0.46%  (p=0.000 n=10+10)
Jn                    927ns ± 0%   922ns ± 0%   -0.54%  (p=0.000 n=10+10)
Ldexp                41.5ns ± 0%  37.0ns ± 0%  -10.84%  (p=0.000 n=9+10)
Log                   124ns ± 0%   118ns ± 0%   -4.84%  (p=0.000 n=10+9)
Logb                 34.0ns ± 0%  32.0ns ± 0%   -5.88%  (p=0.000 n=10+10)
Log1p                 110ns ± 0%   108ns ± 0%   -1.82%  (p=0.000 n=10+10)
Log10                 136ns ± 0%   132ns ± 0%   -2.94%  (p=0.000 n=10+10)
Log2                 51.6ns ± 0%  47.1ns ± 0%   -8.72%  (p=0.000 n=10+10)
Nextafter32          33.0ns ± 0%  30.5ns ± 0%   -7.58%  (p=0.000 n=10+10)
Nextafter64          29.0ns ± 0%  26.5ns ± 0%   -8.62%  (p=0.000 n=10+10)
PowInt                169ns ± 0%   160ns ± 0%   -5.33%  (p=0.000 n=10+10)
PowFrac               375ns ± 0%   361ns ± 0%   -3.73%  (p=0.000 n=10+10)
RoundToEven          14.0ns ± 0%  12.5ns ± 0%  -10.71%  (p=0.000 n=10+10)
Remainder             206ns ± 0%   192ns ± 0%   -6.80%  (p=0.000 n=10+9)
Signbit              6.01ns ± 0%  5.51ns ± 0%   -8.32%  (p=0.000 n=10+9)
Sin                  70.1ns ± 0%  69.6ns ± 0%   -0.71%  (p=0.000 n=10+10)
Sincos               99.1ns ± 0%  99.6ns ± 0%   +0.50%  (p=0.000 n=9+10)
SqrtGoLatency         178ns ± 0%   146ns ± 0%  -17.70%  (p=0.000 n=8+10)
SqrtPrime            9.19µs ± 0%  9.20µs ± 0%   +0.01%  (p=0.000 n=9+9)
Tanh                  125ns ± 1%   127ns ± 0%   +1.36%  (p=0.000 n=10+10)
Y0                    428ns ± 0%   426ns ± 0%   -0.47%  (p=0.000 n=10+10)
Y1                    431ns ± 0%   429ns ± 0%   -0.46%  (p=0.000 n=10+9)
Yn                    906ns ± 0%   901ns ± 0%   -0.55%  (p=0.000 n=10+10)
Float64bits          4.50ns ± 0%  3.50ns ± 0%  -22.22%  (p=0.000 n=10+10)
Float64frombits      4.00ns ± 0%  3.50ns ± 0%  -12.50%  (p=0.000 n=10+9)
Float32bits          4.50ns ± 0%  3.50ns ± 0%  -22.22%  (p=0.002 n=8+10)
Float32frombits      4.00ns ± 0%  3.50ns ± 0%  -12.50%  (p=0.000 n=10+10)

Change-Id: Iba829e15d5624962fe0c699139ea783efeefabc2
Reviewed-on: https://go-review.googlesource.com/129715
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-09-17 20:49:04 +00:00
erifan01
8149db4f64 cmd/compile: intrinsify math.RoundToEven and math.Abs on arm64 
math.RoundToEven can be done by one arm64 instruction FRINTND, intrinsify it to improve performance.
The current pure Go implementation of the function Abs is translated into five instructions on arm64:
str, ldr, and, str, ldr. The intrinsic implementation requires only one instruction, so in terms of
performance, intrinsify it is worthwhile.

Benchmarks:
name           old time/op  new time/op  delta
Abs-8          3.50ns ± 0%  1.50ns ± 0%  -57.14%  (p=0.000 n=10+10)
RoundToEven-8  9.26ns ± 0%  1.50ns ± 0%  -83.80%  (p=0.000 n=10+10)

Change-Id: I9456b26ab282b544dfac0154fc86f17aed96ac3d
Reviewed-on: https://go-review.googlesource.com/116535
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-09-13 14:52:51 +00:00
fanzha02
d5377c2026 test: fix the wrong test of math.Copysign(c, -1) for arm64 
The CL 132915 added the wrong codegen test for math.Copysign(c, -1),
it should test that AND is not emitted. This CL fixes this error.

Change-Id: Ida1d3d54ebfc7f238abccbc1f70f914e1b5bfd91
Reviewed-on: https://go-review.googlesource.com/134815
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-09-12 15:34:20 +00:00
fanzha02
2e5c32518c cmd/compile: optimize math.Copysign on arm64 
Add rewrite rules to optimize math.Copysign() when the second
argument is negative floating point constant.

For example, math.Copysign(c, -2): The previous compile output is
"AND $9223372036854775807, R0, R0; ORR $-9223372036854775808, R0, R0".
The optimized compile output is "ORR $-9223372036854775808, R0, R0"

Math package benchmark results.
name                   old time/op  new time/op  delta
Copysign-8             2.61ns ± 2%  2.49ns ± 0%  -4.55%  (p=0.000 n=10+10)
Cos-8                  43.0ns ± 0%  41.5ns ± 0%  -3.49%  (p=0.000 n=10+10)
Cosh-8                 98.6ns ± 0%  98.1ns ± 0%  -0.51%  (p=0.000 n=10+10)
ExpGo-8                 107ns ± 0%   105ns ± 0%  -1.87%  (p=0.000 n=10+10)
Exp2Go-8                100ns ± 0%   100ns ± 0%  +0.39%  (p=0.000 n=10+8)
Max-8                  6.56ns ± 2%  6.45ns ± 1%  -1.63%  (p=0.002 n=10+10)
Min-8                  6.66ns ± 3%  6.47ns ± 2%  -2.82%  (p=0.006 n=10+10)
Mod-8                   107ns ± 1%   104ns ± 1%  -2.72%  (p=0.000 n=10+10)
Frexp-8                11.5ns ± 1%  11.0ns ± 0%  -4.56%  (p=0.000 n=8+10)
HypotGo-8              19.4ns ± 0%  19.4ns ± 0%  +0.36%  (p=0.019 n=10+10)
Ilogb-8                8.63ns ± 0%  8.51ns ± 0%  -1.36%  (p=0.000 n=10+10)
Jn-8                    584ns ± 0%   585ns ± 0%  +0.17%  (p=0.000 n=7+8)
Ldexp-8                13.8ns ± 0%  13.5ns ± 0%  -2.17%  (p=0.002 n=8+10)
Logb-8                 10.2ns ± 0%   9.9ns ± 0%  -2.65%  (p=0.000 n=10+7)
Nextafter64-8          7.54ns ± 0%  7.51ns ± 0%  -0.37%  (p=0.000 n=10+10)
Remainder-8            73.5ns ± 1%  70.4ns ± 1%  -4.27%  (p=0.000 n=10+10)
SqrtGoLatency-8        79.6ns ± 0%  76.2ns ± 0%  -4.30%  (p=0.000 n=9+10)
Yn-8                    582ns ± 0%   579ns ± 0%  -0.52%  (p=0.000 n=10+10)

Change-Id: I0c9cd1ea87435e7b8bab94b4e79e6e29785f25b1
Reviewed-on: https://go-review.googlesource.com/132915
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-09-06 19:57:25 +00:00
Milan Knezevic
2959128dc5 cmd/compile: add softfloat support to mips64{,le} 
mips64 softfloat support is based on mips implementation and introduces
new enviroment variable GOMIPS64.

GOMIPS64 is a GOARCH=mips64{,le} specific option, for a choice between
hard-float and soft-float. Valid values are 'hardfloat' (default) and
'softfloat'. It is passed to the assembler as
'GOMIPS64_{hardfloat,softfloat}'.

Change-Id: I7f73078627f7cb37c588a38fb5c997fe09c56134
Reviewed-on: https://go-review.googlesource.com/108475
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
 2018-04-27 14:50:17 +00:00
Carlos Eduardo Seo
ebb67d993a cmd/compile, cmd/internal/obj/ppc64: make math.Round an intrinsic on ppc64x 
This change implements math.Round as an intrinsic on ppc64x so it can be
done using a single instruction.

benchmark                   old ns/op     new ns/op     delta
BenchmarkRound-16           2.60          0.69          -73.46%

Change-Id: I9408363e96201abdfc73ced7bcd5f0c29db006a8
Reviewed-on: https://go-review.googlesource.com/109395
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
 2018-04-26 14:12:09 +00:00
Giovanni Bajo
284ba47b49 test: run codegen tests on all supported architecture variants 
This CL makes the codegen testsuite automatically test all
architecture variants for architecture specified in tests. For
instance, if a test file specifies a "arm" test, it will be
automatically run on all GOARM variants (5,6,7), to increase
the coverage.

The CL also introduces a syntax to specify only a specific
variant (eg: "arm/7") in case the test makes sense only there.
The same syntax also allows to specify the operating system
in case it matters (eg: "plan9/386/sse2").

Fixes #24658

Change-Id: I2eba8b918f51bb6a77a8431a309f8b71af07ea22
Reviewed-on: https://go-review.googlesource.com/107315
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
 2018-04-15 20:02:43 +00:00
Giovanni Bajo
79112707bb cmd/compile: add patterns for bit set/clear/complement on amd64 
This patch completes implementation of BT(Q|L), and adds support
for BT(S|R|C)(Q|L).

Example of code changes from time.(*Time).addSec:

        if t.wall&hasMonotonic != 0 {
  0x1073465               488b08                  MOVQ 0(AX), CX
  0x1073468               4889ca                  MOVQ CX, DX
  0x107346b               48c1e93f                SHRQ $0x3f, CX
  0x107346f               48c1e13f                SHLQ $0x3f, CX
  0x1073473               48f7c1ffffffff          TESTQ $-0x1, CX
  0x107347a               746b                    JE 0x10734e7

        if t.wall&hasMonotonic != 0 {
  0x1073435               488b08                  MOVQ 0(AX), CX
  0x1073438               480fbae13f              BTQ $0x3f, CX
  0x107343d               7363                    JAE 0x10734a2

Another example:

                        t.wall = t.wall&nsecMask | uint64(dsec)<<nsecShift | hasMonotonic
  0x10734c8               4881e1ffffff3f          ANDQ $0x3fffffff, CX
  0x10734cf               48c1e61e                SHLQ $0x1e, SI
  0x10734d3               4809ce                  ORQ CX, SI
  0x10734d6               48b90000000000000080    MOVQ $0x8000000000000000, CX
  0x10734e0               4809f1                  ORQ SI, CX
  0x10734e3               488908                  MOVQ CX, 0(AX)

                        t.wall = t.wall&nsecMask | uint64(dsec)<<nsecShift | hasMonotonic
  0x107348b		4881e2ffffff3f		ANDQ $0x3fffffff, DX
  0x1073492		48c1e61e		SHLQ $0x1e, SI
  0x1073496		4809f2			ORQ SI, DX
  0x1073499		480fbaea3f		BTSQ $0x3f, DX
  0x107349e		488910			MOVQ DX, 0(AX)

Go1 benchmarks seem unaffected, and I would be surprised
otherwise:

name                     old time/op    new time/op     delta
BinaryTree17-4              2.64s ± 4%      2.56s ± 9%  -2.92%  (p=0.008 n=9+9)
Fannkuch11-4                2.90s ± 1%      2.95s ± 3%  +1.76%  (p=0.010 n=10+9)
FmtFprintfEmpty-4          35.3ns ± 1%     34.5ns ± 2%  -2.34%  (p=0.004 n=9+8)
FmtFprintfString-4         57.0ns ± 1%     58.4ns ± 5%  +2.52%  (p=0.029 n=9+10)
FmtFprintfInt-4            59.8ns ± 3%     59.8ns ± 6%    ~     (p=0.565 n=10+10)
FmtFprintfIntInt-4         93.9ns ± 3%     91.2ns ± 5%  -2.94%  (p=0.014 n=10+9)
FmtFprintfPrefixedInt-4     107ns ± 6%      104ns ± 6%    ~     (p=0.099 n=10+10)
FmtFprintfFloat-4           187ns ± 3%      188ns ± 3%    ~     (p=0.505 n=10+9)
FmtManyArgs-4               410ns ± 1%      415ns ± 6%    ~     (p=0.649 n=8+10)
GobDecode-4                5.30ms ± 3%     5.27ms ± 3%    ~     (p=0.436 n=10+10)
GobEncode-4                4.62ms ± 5%     4.47ms ± 2%  -3.24%  (p=0.001 n=9+10)
Gzip-4                      197ms ± 4%      193ms ± 3%    ~     (p=0.123 n=10+10)
Gunzip-4                   30.4ms ± 3%     30.1ms ± 3%    ~     (p=0.481 n=10+10)
HTTPClientServer-4         76.3µs ± 1%     76.0µs ± 1%    ~     (p=0.236 n=8+9)
JSONEncode-4               10.5ms ± 9%     10.3ms ± 3%    ~     (p=0.280 n=10+10)
JSONDecode-4               42.3ms ±10%     41.3ms ± 2%    ~     (p=0.053 n=9+10)
Mandelbrot200-4            3.80ms ± 2%     3.72ms ± 2%  -2.15%  (p=0.001 n=9+10)
GoParse-4                  2.88ms ±10%     2.81ms ± 2%    ~     (p=0.247 n=10+10)
RegexpMatchEasy0_32-4      69.5ns ± 4%     68.6ns ± 2%    ~     (p=0.171 n=10+10)
RegexpMatchEasy0_1K-4       165ns ± 3%      162ns ± 3%    ~     (p=0.137 n=10+10)
RegexpMatchEasy1_32-4      65.7ns ± 6%     64.4ns ± 2%  -2.02%  (p=0.037 n=10+10)
RegexpMatchEasy1_1K-4       278ns ± 2%      279ns ± 3%    ~     (p=0.991 n=8+9)
RegexpMatchMedium_32-4     99.3ns ± 3%     98.5ns ± 4%    ~     (p=0.457 n=10+9)
RegexpMatchMedium_1K-4     30.1µs ± 1%     30.4µs ± 2%    ~     (p=0.173 n=8+10)
RegexpMatchHard_32-4       1.40µs ± 2%     1.41µs ± 4%    ~     (p=0.565 n=10+10)
RegexpMatchHard_1K-4       42.5µs ± 1%     41.5µs ± 3%  -2.13%  (p=0.002 n=8+9)
Revcomp-4                   332ms ± 4%      328ms ± 5%    ~     (p=0.720 n=9+10)
Template-4                 48.3ms ± 2%     49.6ms ± 3%  +2.56%  (p=0.002 n=8+10)
TimeParse-4                 252ns ± 2%      249ns ± 3%    ~     (p=0.116 n=9+10)
TimeFormat-4                262ns ± 4%      252ns ± 3%  -4.01%  (p=0.000 n=9+10)

name                     old speed      new speed       delta
GobDecode-4               145MB/s ± 3%    146MB/s ± 3%    ~     (p=0.436 n=10+10)
GobEncode-4               166MB/s ± 5%    172MB/s ± 2%  +3.28%  (p=0.001 n=9+10)
Gzip-4                   98.6MB/s ± 4%  100.4MB/s ± 3%    ~     (p=0.123 n=10+10)
Gunzip-4                  639MB/s ± 3%    645MB/s ± 3%    ~     (p=0.481 n=10+10)
JSONEncode-4              185MB/s ± 8%    189MB/s ± 3%    ~     (p=0.280 n=10+10)
JSONDecode-4             46.0MB/s ± 9%   47.0MB/s ± 2%  +2.21%  (p=0.046 n=9+10)
GoParse-4                20.1MB/s ± 9%   20.6MB/s ± 2%    ~     (p=0.239 n=10+10)
RegexpMatchEasy0_32-4     460MB/s ± 4%    467MB/s ± 2%    ~     (p=0.165 n=10+10)
RegexpMatchEasy0_1K-4    6.19GB/s ± 3%   6.28GB/s ± 3%    ~     (p=0.165 n=10+10)
RegexpMatchEasy1_32-4     487MB/s ± 5%    497MB/s ± 2%  +2.00%  (p=0.043 n=10+10)
RegexpMatchEasy1_1K-4    3.67GB/s ± 2%   3.67GB/s ± 3%    ~     (p=0.963 n=8+9)
RegexpMatchMedium_32-4   10.1MB/s ± 3%   10.1MB/s ± 4%    ~     (p=0.435 n=10+9)
RegexpMatchMedium_1K-4   34.0MB/s ± 1%   33.7MB/s ± 2%    ~     (p=0.173 n=8+10)
RegexpMatchHard_32-4     22.9MB/s ± 2%   22.7MB/s ± 4%    ~     (p=0.565 n=10+10)
RegexpMatchHard_1K-4     24.0MB/s ± 3%   24.7MB/s ± 3%  +2.64%  (p=0.001 n=9+9)
Revcomp-4                 766MB/s ± 4%    775MB/s ± 5%    ~     (p=0.720 n=9+10)
Template-4               40.2MB/s ± 2%   39.2MB/s ± 3%  -2.47%  (p=0.002 n=8+10)

The rules match ~1800 times during all.bash.

Fixes #18943

Change-Id: I64be1ada34e89c486dfd935bf429b35652117ed4
Reviewed-on: https://go-review.googlesource.com/94766
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2018-03-24 02:38:50 +00:00
Giovanni Bajo
89ae7045f3 test: convert all math-related tests from asm_test 
Change-Id: If542f0b5c5754e6eb2f9b302fe5a148ba9a57338
Reviewed-on: https://go-review.googlesource.com/98443
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
 2018-03-04 16:52:33 +00:00