1
0
mirror of https://github.com/golang/go synced 2024-11-26 23:51:29 -07:00
Commit Graph

56109 Commits

Author SHA1 Message Date
Mateusz Poliwczak
7ec2e84424 crypto/x509: remove unnecessary !Empty() check
This check is already done by PeekASN1Tag.

Change-Id: Ieba0e35548f7f99bce689d29adaea6b8e471cc70
GitHub-Last-Rev: b4ef3dcc23
GitHub-Pull-Request: golang/go#59197
Reviewed-on: https://go-review.googlesource.com/c/go/+/478835
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2023-03-24 02:45:13 +00:00
Mateusz Poliwczak
33b634803b crypto/x509: remove letters from the end of basic constraints parsing errors
Change-Id: I84533d2df1a20f6337c43b1ca00d8022909a0018
GitHub-Last-Rev: 7dcc4e7296
GitHub-Pull-Request: golang/go#59195
Reviewed-on: https://go-review.googlesource.com/c/go/+/478816
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-24 02:45:11 +00:00
erifan01
42f99b203d cmd/compile: optimize cmp to cmn under conditions < and >= on arm64
Under the right conditions we can optimize cmp comparisons to cmn
comparisons, such as:
func foo(a, b int) int {
  var c int
  if a + b < 0 {
  	c = 1
  }
  return c
}

Previously it's compiled as:
  ADD     R1, R0, R1
  CMP     $0, R1
  CSET    LT, R0
With this CL it's compiled as:
  CMN     R1, R0
  CSET    MI, R0
Here we need to pay attention to the overflow situation of a+b, the MI
flag means N==1, which doesn't honor the overflow flag V, its value
depends only on the sign of the result. So it has the same semantic of
the Go code, so it's correct.

Similarly, this CL also optimizes the case of >= comparison
using the PL conditional flag.

Change-Id: I47179faba5b30cca84ea69bafa2ad5241bf6dfba
Reviewed-on: https://go-review.googlesource.com/c/go/+/476116
Run-TryBot: Eric Fang <eric.fang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-24 01:19:09 +00:00
erifan01
e81cc9119f cmd/compile: combine similar optimization rules on arm64
This CL combines some rules with the same structure.
In order to avoid extremely long rules, this CL does not merge some
rules. In addition, this CL aligned the components of some rules for
better reading.

Change-Id: I4ba1493251ace00b10591e3c8eef4b6277a4b226
Reviewed-on: https://go-review.googlesource.com/c/go/+/476115
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Eric Fang <eric.fang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-24 01:18:58 +00:00
Paschalis Tsilias
10c2348602 net/http: continue using referer header if it's present
Currently, net/http replaces the Referer header with the URL of the
previous request, regardless of its status. This CL changes this
behavior, respecting the Referer header for secure connections, if it is
set.

Fixes #44160

Change-Id: I2d7fe37dd681549136329e832188294691584870
Reviewed-on: https://go-review.googlesource.com/c/go/+/291636
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Nick Craig-Wood <nickcw@gmail.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-24 00:52:03 +00:00
Michał Matczuk
d633f4b996 net/http: fix typo
Change-Id: I6e39f14df65685451d3d98c6def1e0665da20590
GitHub-Last-Rev: d9de237bd2
GitHub-Pull-Request: golang/go#59200
Reviewed-on: https://go-review.googlesource.com/c/go/+/478855
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-24 00:44:37 +00:00
Heschi Kreinick
e0c69587c4 Revert "os/user: lookup Linux users and groups via systemd userdb"
This reverts CL 459455.

Reason for revert: breaks tests on various platforms, see https://go-review.googlesource.com/c/go/+/459455/74#message-3d9462b24872f6e0b12b4abf5ea3983e1588f91a

Change-Id: I4c79b28f750c2369909688f86616d76d7eaf0ab4
Reviewed-on: https://go-review.googlesource.com/c/go/+/479135
Run-TryBot: Heschi Kreinick <heschi@google.com>
Auto-Submit: Heschi Kreinick <heschi@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-23 22:09:58 +00:00
Michael Pratt
b0dfcb7465 all: replace leading spaces with tabs in assembly
Most of these are one-off mistakes. Only one file was all spaces.

Change-Id: I277c3ce4a4811aa4248c90676f66bc775ae8d062
Reviewed-on: https://go-review.googlesource.com/c/go/+/478976
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-23 20:52:57 +00:00
Bryan C. Mills
7b88715882 testing: quote -test.v=test2json output when logging it
The -test.v=test2json flag causes the testing package to inject extra
control characters in the output to allow the JSON parser to more
gracefully handle extraneous writes to os.Stdout and/or os.Stderr in
the package under test (see CL 443596). However, it doesn't filter out
those control characters because almost no real-world tests will
output them.

It turns out that testing.TestFlag is one of the rare tests that does
output those control characters, because it tests the
-test.v=test2json flag itself.

Fixes #59181.

Change-Id: I35ca6748afcd3d4333563028817caac946f5e86a
Reviewed-on: https://go-review.googlesource.com/c/go/+/479035
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-03-23 19:50:22 +00:00
Johan Abildskov
3d5391ed87 encoding/gob: extend partially allocated string slices
Fixes #59172

Change-Id: I54d5e724f10117a40ec5dd58c810f6bbb2475933
GitHub-Last-Rev: d1a986698c
GitHub-Pull-Request: golang/go#59173
Reviewed-on: https://go-review.googlesource.com/c/go/+/478215
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2023-03-23 17:32:41 +00:00
Ananth Bhaskararaman
1596d71255 os/user: lookup Linux users and groups via systemd userdb
Fetch usernames and groups via systemd userdb if available.
Otherwise fall back to parsing /etc/passwd, etc.

Fixes #38810

Co-authored-by: Michael Stapelberg <stapelberg@google.com>

Change-Id: Iff6ffc54feec6b6cec241b89e362c2285c8c0454
GitHub-Last-Rev: 1a627cc9a1
GitHub-Pull-Request: golang/go#57458
Reviewed-on: https://go-review.googlesource.com/c/go/+/459455
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2023-03-23 17:32:05 +00:00
Cherry Mui
0aa14fca8c cmd/go: enable -pgo=auto by default
Updates #58099.
Updates #55022.

Change-Id: I32eacdf9f008d16566e0b30230ecc25d110a9811
Reviewed-on: https://go-review.googlesource.com/c/go/+/474236
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
2023-03-22 21:17:50 +00:00
Cherry Mui
3d28e0ebb9 cmd/go: permit "go list" error in some tests
The vendor_import test lists packages that are known bad (e.g.
bad.go, invalid.go). Pass -e to permit error.

The mod_vendor_auto test includes a package that imports a main
package, which should be an error. Pass -e to permit error.

Updates #59186.

Change-Id: I3b63025c3935f55feda1a95151d4c688d0394644
Reviewed-on: https://go-review.googlesource.com/c/go/+/477838
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-03-22 21:14:01 +00:00
Cherry Mui
65896f68fc cmd/go: make get_dash_t test more specific
Currently it uses "go list ...", which includes all packages in
the known universe, and may include unresolved dependencies. The
test for issue #8181 is specifically for that the test dependency
of package b is downloaded. Test that specifically.

Change-Id: Icfbd7e197698b10ae4bc7c8aa3b0f2c477ca6b8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/477837
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2023-03-22 21:13:47 +00:00
Bryan C. Mills
d35dd190ff net/http: improve logging in TestServerSetKeepAlivesEnabledClosesConns
- Log the actual addresses reported, in case that information is relevant.

- Keep going after the first error, so that we report more information
  about the idle connections after they have been used. (Was the first
  connection dropped completely, or did it later show up as idle?)

- Remove the third request at the end of the test. It had been
  assuming that the address for a new connection would always be
  different from the address for the just-closed connection; however,
  that assumption does not hold in general.

Removing the third request addresses one of the two failure modes seen
in #55195. It may help in investigating the other failure mode, but I
do not expect it to fix the failures entirely. (I suspect that the
other failure mode is a synchronization bug in returning the idle
connection from the first request.)

For #55195.

Change-Id: If9604ea68db0697268288ce9812dd57633e83fbd
Reviewed-on: https://go-review.googlesource.com/c/go/+/478515
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
2023-03-22 20:51:32 +00:00
Bryan C. Mills
9d2fc7084f net/http: simplify Conn lifetimes in TestClientTimeoutKillsConn tests
This is intended to fix the failure mode observed in
https://build.golang.org/log/f153e06ed547517fb2cddb0fa817fea40a6146f7,
but I haven't been able to reproduce that failure mode locally so I'm
not sure whether it actually does.

Change-Id: Ib14378f1299a76b54013419bdc715a9dbdd94667
Reviewed-on: https://go-review.googlesource.com/c/go/+/478235
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 20:51:30 +00:00
Bryan C. Mills
11c40e3497 net/http: in the IdleConnStrsForTesting_h2 helper, omit conns that cannot be reused
In #59155, we observed that the IdleConnStrsForTesting_h2 helper
function sometimes reported extra connections after a
"client conn not usable" failure and retry. It turns out that that
state corresponds exactly to the
http2clientConnIdleState.canTakeNewRequest field, so (with a bit of
extra nethttpomithttp2 plumbing) we can use that field in the helper
to filter out the unusable connections.

Fixes #59155.

Change-Id: Ief6283c9c8c5ec47dd9f378beb0ddf720832484e
Reviewed-on: https://go-review.googlesource.com/c/go/+/477856
Reviewed-by: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-03-22 20:51:27 +00:00
Michael Matloob
4d9beb2052 cmd/go: use --ffile-prefix-map instead of --debug-prefix-map
Also add code to replace the vendor directory in the prefix-map in
vendored modules.  We weren't doing that before because in vendored
modules, the module's Dir field was set to empty, so nothing was being
replaced. Instead when Dir is not set, so we are in vendor mode,
replace the entire vendor directory's path.

Change-Id: I910499c74237699fd36d18049909a72e2b6705d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/478455
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2023-03-22 19:56:37 +00:00
Huang Qiqi
48d61a46e2 runtime: save and restore fcc registers in async preempt on loong64
During the context switch of goroutine scheduling, the value of the
fcc0 register needs to be saved on the stack.

Fixs #59000.

Change-Id: Ie80dbae738f60df6c11a3fe31fc57de817d76afc
Reviewed-on: https://go-review.googlesource.com/c/go/+/475577
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
2023-03-22 19:29:43 +00:00
Ian Lance Taylor
09e9a9eac9 test: add test that caused gofrontend crash
For #59169

Change-Id: Id72ad9fe8b6e1d7cf64f972520ae8858f70c025a
Reviewed-on: https://go-review.googlesource.com/c/go/+/478217
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
2023-03-22 18:56:30 +00:00
Collin Wright
4a3071696d sync: fix TestCondSignalStealing flake
Fixes: #59043

Change-Id: I8215948a772566641dab1079a9837128450deb1b
GitHub-Last-Rev: 0fa6f08a70
GitHub-Pull-Request: golang/go#59160
Reviewed-on: https://go-review.googlesource.com/c/go/+/477955
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
2023-03-22 18:52:42 +00:00
WANG Xuerui
09f1ddb158 cmd/internal/obj/loong64: realize all unconditional jumps with B/BL
The current practice of using the "PC-relative" `BEQ ZERO, ZERO` for
short jumps is inherited from the MIPS port, where the pre-R6 long
jumps are PC-regional instead of PC-relative. This quirk is not
present in LoongArch from the very beginning so there is no reason to
keep the behavior any more.

While at it, simplify the code to not place anything in the jump offset
field if a relocation is to take place. (It may be relic of a previous
REL-era treatment where the addend is to be stored in the instruction
word, but again, loong64 is exclusively RELA from day 1 so no point in
doing so either.)

Benchmark shows very slight improvement on a 3A5000 box, indicating the
LA464 micro-architecture presumably *not* seeing the always-true BEQs as
equivalent to B:

goos: linux
goarch: loong64
pkg: test/bench/go1
                      │  2ef70d9d0f  │                this CL                │
                      │    sec/op    │    sec/op     vs base                 │
BinaryTree17             14.57 ±  4%    14.54 ±  1%       ~ (p=0.353 n=10)
Fannkuch11               3.570 ±  0%    3.570 ±  0%       ~ (p=0.529 n=10)
FmtFprintfEmpty         92.84n ±  0%   92.84n ±  0%       ~ (p=0.970 n=10)
FmtFprintfString        150.0n ±  0%   149.9n ±  0%       ~ (p=0.350 n=10)
FmtFprintfInt           153.3n ±  0%   153.3n ±  0%       ~ (p=1.000 n=10) ¹
FmtFprintfIntInt        235.8n ±  0%   235.8n ±  0%       ~ (p=0.963 n=10)
FmtFprintfPrefixedInt   318.5n ±  0%   318.5n ±  0%       ~ (p=0.474 n=10)
FmtFprintfFloat         410.4n ±  0%   410.4n ±  0%       ~ (p=0.628 n=10)
FmtManyArgs             944.9n ±  0%   945.0n ±  0%       ~ (p=0.240 n=10)
GobDecode               13.97m ± 12%   12.83m ± 21%       ~ (p=0.165 n=10)
GobEncode               17.84m ±  5%   18.60m ±  4%       ~ (p=0.123 n=10)
Gzip                    421.0m ±  0%   421.0m ±  0%       ~ (p=0.579 n=10)
Gunzip                  89.80m ±  0%   89.77m ±  0%       ~ (p=0.529 n=10)
HTTPClientServer        86.54µ ±  1%   86.25µ ±  0%  -0.33% (p=0.003 n=10)
JSONEncode              18.57m ±  0%   18.57m ±  0%       ~ (p=0.353 n=10)
JSONDecode              77.48m ±  0%   77.30m ±  0%  -0.23% (p=0.035 n=10)
Mandelbrot200           7.217m ±  0%   7.217m ±  0%       ~ (p=0.436 n=10)
GoParse                 7.599m ±  2%   7.632m ±  1%       ~ (p=0.353 n=10)
RegexpMatchEasy0_32     140.1n ±  0%   140.1n ±  0%       ~ (p=0.582 n=10)
RegexpMatchEasy0_1K     1.538µ ±  0%   1.538µ ±  0%       ~ (p=1.000 n=10) ¹
RegexpMatchEasy1_32     161.7n ±  0%   161.7n ±  0%       ~ (p=1.000 n=10) ¹
RegexpMatchEasy1_1K     1.632µ ±  0%   1.632µ ±  0%       ~ (p=1.000 n=10) ¹
RegexpMatchMedium_32    1.369µ ±  0%   1.369µ ±  0%       ~ (p=1.000 n=10)
RegexpMatchMedium_1K    39.96µ ±  0%   39.96µ ±  0%  +0.01% (p=0.010 n=10)
RegexpMatchHard_32      2.099µ ±  0%   2.099µ ±  0%       ~ (p=1.000 n=10) ¹
RegexpMatchHard_1K      62.50µ ±  0%   62.50µ ±  0%       ~ (p=0.099 n=10)
Revcomp                  1.349 ±  0%    1.347 ±  0%  -0.14% (p=0.001 n=10)
Template                118.4m ±  0%   118.0m ±  0%  -0.36% (p=0.023 n=10)
TimeParse               407.8n ±  0%   407.9n ±  0%  +0.02% (p=0.000 n=10)
TimeFormat              508.0n ±  0%   507.9n ±  0%       ~ (p=0.421 n=10)
geomean                 103.5µ         103.3µ        -0.17%
¹ all samples are equal

                     │  2ef70d9d0f   │                this CL                 │
                     │      B/s      │      B/s       vs base                 │
GobDecode              52.67Mi ± 11%   57.04Mi ± 17%       ~ (p=0.149 n=10)
GobEncode              41.03Mi ±  4%   39.35Mi ±  4%       ~ (p=0.118 n=10)
Gzip                   43.95Mi ±  0%   43.95Mi ±  0%       ~ (p=0.428 n=10)
Gunzip                 206.1Mi ±  0%   206.1Mi ±  0%       ~ (p=0.399 n=10)
JSONEncode             99.64Mi ±  0%   99.66Mi ±  0%       ~ (p=0.304 n=10)
JSONDecode             23.88Mi ±  0%   23.94Mi ±  0%  +0.22% (p=0.030 n=10)
GoParse                7.267Mi ±  2%   7.238Mi ±  1%       ~ (p=0.360 n=10)
RegexpMatchEasy0_32    217.8Mi ±  0%   217.8Mi ±  0%  -0.00% (p=0.006 n=10)
RegexpMatchEasy0_1K    635.0Mi ±  0%   635.0Mi ±  0%       ~ (p=0.194 n=10)
RegexpMatchEasy1_32    188.7Mi ±  0%   188.7Mi ±  0%       ~ (p=0.338 n=10)
RegexpMatchEasy1_1K    598.5Mi ±  0%   598.5Mi ±  0%  -0.00% (p=0.000 n=10)
RegexpMatchMedium_32   22.30Mi ±  0%   22.30Mi ±  0%       ~ (p=0.211 n=10)
RegexpMatchMedium_1K   24.43Mi ±  0%   24.43Mi ±  0%       ~ (p=1.000 n=10)
RegexpMatchHard_32     14.54Mi ±  0%   14.54Mi ±  0%       ~ (p=0.474 n=10)
RegexpMatchHard_1K     15.62Mi ±  0%   15.62Mi ±  0%       ~ (p=1.000 n=10) ¹
Revcomp                179.7Mi ±  0%   180.0Mi ±  0%  +0.14% (p=0.001 n=10)
Template               15.63Mi ±  0%   15.68Mi ±  0%  +0.34% (p=0.022 n=10)
geomean                60.29Mi         60.44Mi        +0.24%
¹ all samples are equal

Change-Id: I112dd663c49567386ea75dd4966a9f8127ffb90e
Reviewed-on: https://go-review.googlesource.com/c/go/+/478075
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 18:50:59 +00:00
Paul E. Murphy
7f4a54c0df cmd/internal/obj/ppc64: add VC[LT]ZLSBB instructions
These are ISA 3.0 power9 instructions which are helpful when reducing
a vector compare result into a GPR.

They are used in a future patch to improve the bytes.IndexByte asm
routine.

Change-Id: I424e2628e577167b9b7c0fcbd82099daf568ea35
Reviewed-on: https://go-review.googlesource.com/c/go/+/478115
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2023-03-22 18:20:22 +00:00
Cuong Manh Le
07559ceb72 cmd/compile: mark negative size memclr non-inlineable
Fixes #59174

Change-Id: I72b2b068830b90d42a0186addd004fb3175b9126
Reviewed-on: https://go-review.googlesource.com/c/go/+/478375
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Jakub Ciolek <jakub@ciolek.dev>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 16:43:10 +00:00
Cuong Manh Le
efaca3170f reflect: add test for interface type NumMethod
While at it, also use concrete type for non-interface type test.

Change-Id: Ie468c30ee31ba99ef8f9a810d3be851fd37b9b43
Reviewed-on: https://go-review.googlesource.com/c/go/+/478356
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2023-03-22 16:39:08 +00:00
Archana R
cdf77c7209 runtime: improve memmove on ppc64x/power10
Rewrite memmove asm function to use the new power10 instructions
lxvl and stxvl or the load and store vector with length which can
specify the number of bytes to be loaded/stored in a register,
thereby avoiding multiple instructions to process 8bytes, 4bytes,
2bytes and a single byte while storing the tail end bytes. On power9
and power8 the code remains unchanged.
The performance for all sizes<=16 improve on power10 with this change.

name                          old time/op    new time/op    delta
Memmove/1                2.87ns ±  0%    2.64ns ±  1%    -8.11%
Memmove/2                2.85ns ±  0%    2.62ns ±  1%    -8.12%
Memmove/3                2.78ns ±  0%    2.63ns ±  1%    -5.33%
Memmove/4                2.83ns ±  0%    2.63ns ±  2%    -7.33%
Memmove/5                2.78ns ±  0%    2.63ns ±  1%    -5.40%
Memmove/6                2.61ns ±  3%    2.61ns ±  1%      ~
Memmove/7                2.82ns ±  0%    2.61ns ±  1%    -7.48%
Memmove/8                2.82ns ±  0%    2.65ns ±  1%    -6.11%
Memmove/9                6.41ns ±  0%    2.62ns ±  1%   -59.17%
Memmove/10               5.09ns ±  1%    2.60ns ±  1%   -48.90%
Memmove/11               4.68ns ±  7%    2.59ns ±  1%   -44.56%
Memmove/12               6.25ns ±  2%    2.60ns ±  1%   -58.46%
Memmove/13               4.15ns ± 25%    2.59ns ±  1%   -37.66%
Memmove/14               3.76ns ± 11%    2.59ns ±  1%   -30.94%
Memmove/15               3.82ns ±  1%    2.60ns ±  1%   -31.93%
Memmove/16               2.96ns ±  1%    2.59ns ±  1%   -12.63%
MemmoveUnalignedDst/1    3.07ns ±  0%    2.77ns ±  0%    -9.75%
MemmoveUnalignedDst/2    2.82ns ±  0%    2.77ns ±  0%    -1.73%
MemmoveUnalignedDst/3    3.03ns ±  0%    2.77ns ±  0%    -8.75%
MemmoveUnalignedDst/4    2.85ns ±  1%    2.77ns ±  0%    -2.90%
MemmoveUnalignedDst/5    3.03ns ±  0%    2.77ns ±  0%    -8.75%
MemmoveUnalignedDst/6    2.88ns ±  0%    2.77ns ±  0%    -4.04%
MemmoveUnalignedDst/7    3.11ns ±  0%    2.77ns ±  0%   -11.10%
MemmoveUnalignedDst/8    4.18ns ±  2%    2.77ns ±  0%   -33.90%
MemmoveUnalignedDst/9    6.36ns ±  1%    2.77ns ±  0%   -56.53%
MemmoveUnalignedDst/10   5.77ns ±  1%    2.77ns ±  0%   -52.09%
MemmoveUnalignedDst/11   4.68ns ±  1%    2.77ns ±  0%   -40.86%
MemmoveUnalignedDst/12   4.54ns ±  2%    2.77ns ±  0%   -39.05%
MemmoveUnalignedDst/13   6.16ns ±  5%    2.77ns ±  0%   -55.14%
MemmoveUnalignedDst/14   4.03ns ±  2%    2.77ns ±  0%   -31.41%
MemmoveUnalignedDst/15   4.11ns ±  0%    2.77ns ±  0%   -32.74%
MemmoveUnalignedDst/16   3.49ns ±  4%    2.79ns ±  1%   -20.04%
MemmoveUnalignedSrc/1    3.06ns ±  0%    2.77ns ±  0%    -9.68%
MemmoveUnalignedSrc/2    2.82ns ±  1%    2.77ns ±  0%    -1.93%
MemmoveUnalignedSrc/3    3.04ns ±  0%    2.77ns ±  0%    -8.95%
MemmoveUnalignedSrc/4    2.85ns ±  0%    2.77ns ±  0%    -2.86%
MemmoveUnalignedSrc/5    3.04ns ±  0%    2.77ns ±  0%    -8.97%
MemmoveUnalignedSrc/6    2.93ns ±  0%    2.77ns ±  0%    -5.43%
MemmoveUnalignedSrc/7    3.13ns ±  0%    2.77ns ±  0%   -11.56%
MemmoveUnalignedSrc/8    3.71ns ±  2%    2.77ns ±  0%   -25.46%
MemmoveUnalignedSrc/9    6.04ns ±  0%    2.77ns ±  0%   -54.16%
MemmoveUnalignedSrc/10   6.86ns ±  5%    2.77ns ±  0%   -59.69%
MemmoveUnalignedSrc/11   4.18ns ±  3%    2.77ns ±  0%   -33.81%
MemmoveUnalignedSrc/12   4.75ns ±  2%    2.77ns ±  0%   -41.81%
MemmoveUnalignedSrc/13   4.78ns ±  3%    2.77ns ±  0%   -42.15%
MemmoveUnalignedSrc/14   3.89ns ±  5%    2.77ns ±  0%   -28.80%
MemmoveUnalignedSrc/15   4.09ns ±  0%    2.77ns ±  0%   -32.30%
MemmoveUnalignedSrc/16   3.15ns ±  1%    2.77ns ±  0%   -12.05%
Change-Id: Ia3c09d968dada71a794e5ccab3300ea9c46d8374
Reviewed-on: https://go-review.googlesource.com/c/go/+/470135
Run-TryBot: Archana Ravindar <aravind5@in.ibm.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 11:36:20 +00:00
Jonathan Amsterdam
bd20bf4807 slog: eliminate needsQuotingSet
Delete the set of bytes that need quoting in TextHandler, because it
is almost identical to the set for JSON. Use JSONHandler's safeSet
with a few exceptions.

Updates #56345.

Change-Id: Iff6d309c067affef2e5ecfcebd6e1bb8f00f95b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/478198
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 11:15:33 +00:00
Cuong Manh Le
9b6231a1ab log/slog: fix window race builder
Bench log file is created non-portably, only works on system where
"/tmp" existed and "/" is path separator.

Fixing this by using portable methods from std lib.

Updates #56345

Change-Id: I1f6b6b97b913ca56a6053beca7025652618ecbf3
Reviewed-on: https://go-review.googlesource.com/c/go/+/478355
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Jonathan Amsterdam <jba@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 11:02:00 +00:00
erifan01
91a2e921dd cmd/compile: fix incorrect truncating when converting CMP to TST on arm64
CL 420434 optimized CMP into TST in some situations, but it has a bug,
these four rules are not correct:
(LessThan (CMPWconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (LessThan (TSTconst [c] y))
(LessEqual (CMPWconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (LessEqual (TSTconst [c] y))
(GreaterThan (CMPWconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (GreaterThan (TSTconst [c] y))
(GreaterEqual (CMPWconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (GreaterEqual (TSTconst [c] y))

But due to the existence of this rule
(LessThan (CMPWconst [0] x:(ANDconst [c] y))) && x.Uses == 1 =>
(LessThan (TSTWconst [int32(c)] y)), the above rules have never been
fired. This CL corrects them as:
(LessThan (CMPconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (LessThan (TSTconst [c] y))
(LessEqual (CMPconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (LessEqual (TSTconst [c] y))
(GreaterThan (CMPconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (GreaterThan (TSTconst [c] y))
(GreaterEqual (CMPconst [0] x:(ANDconst [c] y))) && x.Uses == 1 => (GreaterEqual (TSTconst [c] y))

Change-Id: I7d60bcc9a266ee58388baeaab9f493b57cf1ad55
Reviewed-on: https://go-review.googlesource.com/c/go/+/473617
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Eric Fang <eric.fang@arm.com>
2023-03-22 08:32:53 +00:00
Nont Thanonchai
ed2442a0e1 os: avoid creating a new file in Truncate on Windows
Truncate() a non existent file on Windows currently creates a new blank
file. This behavior is not consistent with other OSes where a file not
found error would instead be returned. This change makes Truncate on
Windows return a file-not-found error when the specified file doesn't
exist, bringing the behavior consistent.

New test cases have been added to prevent a regression.

Fixes #58977

Change-Id: Iaf7b41fc4ea86a2b2ccc59f8be81be42ed211b5c
GitHub-Last-Rev: 636b6c37c1
GitHub-Pull-Request: golang/go#59085
Reviewed-on: https://go-review.googlesource.com/c/go/+/477215
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Quim Muntal <quimmuntal@gmail.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-03-22 07:02:33 +00:00
Cuong Manh Le
bcd82125f8 cmd/compile: re-compile instantiated generic methods in linkshared mode
For G[T] that was seen and compiled in imported package, it is not added
to typecheck.Target.Decls, prevent wasting compile time re-creating
DUPOKS symbols. However, the linker do not support a type symbol
referencing a method symbol across DSO boundary. That causes unreachable
sym error when building under -linkshared mode.

To fix it, always re-compile generic methods in linkshared mode.

Fixes #58966

Change-Id: I894b417cfe8234ae1fe809cc975889345df22cef
Reviewed-on: https://go-review.googlesource.com/c/go/+/477375
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-22 04:04:11 +00:00
Jonathan Amsterdam
f17e7e8441 log/slog: rename and remove files
- Remove the norace_test.go files, moving their contents elsewhere.

- Rename the internal/testutil package to internal/slogtest.

- Remove value_unsafe.go, moving its contents to value.go.

Updates golang/go#56345.

Change-Id: I2a24ace5aea47f7a3067cd671f606c4fb279d744
Reviewed-on: https://go-review.googlesource.com/c/go/+/478197
Run-TryBot: Jonathan Amsterdam <jba@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-22 00:33:02 +00:00
Robert Griesemer
acce3abb7e cmd/compile/internal/types2: avoid unpacking single-value LHS
For ++/-- statements, we know that syntax.AssignStmt.Lhs is a
single expression. Avoid unpacking (and allocating a slice) in
that case. Minor optimization.

Change-Id: I6615fd12277b1cd7d4f8b86e0b9d39f27708c13e
Reviewed-on: https://go-review.googlesource.com/c/go/+/477915
Run-TryBot: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
2023-03-21 21:48:20 +00:00
Robert Griesemer
cbcef91a10 go/types: remove Checker.useLHS - not needed
We can just use Checker.use, as long as we take care of blank (_)
identifiers that may appear of the LHS of assignments. It's ok to
"use" non-blank variables in case of an error, even on the LHS.

This makes this code match the types2 implementation.

Change-Id: Ied9b9802ecb63912631bbde1dc6993ae855a691b
Reviewed-on: https://go-review.googlesource.com/c/go/+/477895
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
2023-03-21 21:47:10 +00:00
Robert Griesemer
70d836debb go.types, types2: factor out checking of LHS in variable assignment
Step towards disentangling assignment checking functionality.
In preparation for reverse inference of function type arguments,
but independently helpful in better separating concerns in the code.

Change-Id: I9bac9d8005090c00d9ae6c5cfa13765aacce6b12
Reviewed-on: https://go-review.googlesource.com/c/go/+/477855
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2023-03-21 21:37:14 +00:00
Robert Griesemer
c013ed5b52 go/types, types2: refactor multiExpr and exprList
Preparation for simpler exprList use.

Change-Id: I2d62bbaba006aa3a378ec743564d46c5edcb8b47
Reviewed-on: https://go-review.googlesource.com/c/go/+/478016
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-21 21:31:13 +00:00
Robert Griesemer
8e19d2bbaf cmd/compile/internal/types2: respect commaerr in Checker.exprList
The changes to exprList (in call.go), made in CL 282193, didn't
get faithfully ported to types2: in the case of operand mode
commaerr, unpacking didn't correctly set the type of the 2nd
value to error. This shouldn't matter for the compiler, but
the code differs from the go/types version. Make them the same.

Change-Id: I6f69575f9ad4f43169b851dffeed85c19588a261
Reviewed-on: https://go-review.googlesource.com/c/go/+/478255
Run-TryBot: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
2023-03-21 21:25:48 +00:00
Robert Findley
8fce59eab5 cmd/go: add a -debug-runtime-trace flag
The runtime/trace package proved useful for investigating go command
performance, and it makes sense (to me) to make this available for
development behind an undocumented flag, at the cost of ~25KB of binary
size. We could of course futher hide this functionality behind an
experiment or build tag, if necessary.

Updates #59157

Change-Id: I612320920ca935f1ee10bb6a803b7952f36c939b
Reviewed-on: https://go-review.googlesource.com/c/go/+/477896
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
2023-03-21 21:15:43 +00:00
Cherry Mui
3aa7ada607 cmd/go: extend the linker -o workaround for plugins to all platforms
On Linux, for a shared object, at least with the Gold linker, the
output file path is recorded in the .gnu.version_d section. When
the output file path is in a temporary directory, it causes
nondeterministic build.

This is similar to #58557, but for Linux with the Gold linker.
Apply the same workaround as in CL 477296.

Should fix the linux-arm64-longtest builder.

Change-Id: Ic703bff32c1bcc40054b89be696e04280855e876
Reviewed-on: https://go-review.googlesource.com/c/go/+/478196
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-03-21 20:57:28 +00:00
Jonathan Amsterdam
eedd97d5fd log/slog: clarify Logger.WithGroup doc
Make it clear that "qualified by the given name" doesn't imply
any particular implementation, but depends on how the Handler
treats groups.

Updates golang/go#56345.

Change-Id: Idf52553108bc1a7d2091a06cc4fc4cc0fc52cc14
Reviewed-on: https://go-review.googlesource.com/c/go/+/478056
Reviewed-by: Alan Donovan <adonovan@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
2023-03-21 20:55:59 +00:00
Jonathan Amsterdam
f9a4cfd510 log/slog: use unsafe.StringData, SliceData
Use the new functions in 1.20 (unsafe.StringData, etc.) instead
of StringHeader and StructHeader from the reflect package.

Updates golang/go#56345.

Change-Id: I84d0db7b203aeffe45ce8b06beb7b4ee17e19949
Reviewed-on: https://go-review.googlesource.com/c/go/+/478055
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-21 20:55:46 +00:00
Jonathan Amsterdam
f67b0a73e3 log/slog: initial commit
The slog structured logging package.

This code was copied from the slog directory of the x/exp repo
at commit 642cacee5cc05231f45555a333d07f1005ffc287, with the
following changes:

- Change import paths.
- Delete unused files list.go, list_test.go.
- Rename example_depth_test.go to example_wrap_test.go and
  adjust example output.
- Change the tag safe_values to safe_slog_values.
- Make captureHandler goroutine-safe to fix a race condition
  in benchmarks.
- Other small changes as suggested in review comments.

Also, add dependencies to go/build/deps_test.go.

Also, add new API for the API checker.

Updates golang/go#56345.

Change-Id: Id8d720967571ced5c5f32c84a8dd9584943cd7df
Reviewed-on: https://go-review.googlesource.com/c/go/+/477295
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Jonathan Amsterdam <jba@google.com>
Reviewed-by: Alan Donovan <adonovan@google.com>
2023-03-21 20:55:33 +00:00
Michael Anthony Knyszek
b513bd808f runtime: bias the pacer's cons/mark smoothing against noise
Currently the pacer is designed to pace against the edge. Specifically,
it tries to find the sweet spot at which there are zero assists, but
simultaneously finishes each GC perfectly on time.

This pretty much works, despite the noisiness of the measurement of the
cons/mark ratio, which is central to the pacer's function. (And this
noise is basically a given; the cons/mark ratio is used as a prediction
under a steady-state assumption.) Typically, this means that the GC
might assist a little bit more because it started the GC late, or it
might execute more GC cycles because it started early. In many cases the
magnitude of this variation is small.

However, we can't possibly control for all sources of noise, especially
since some noise can come from the underlying system. Furthermore, there
are inputs to the measurement that have effectively no restrictions on
how they vary, and the pacer needs to assume that they're essentially
static when they might not be in some applications (i.e. goroutine
stacks).

The result of high noise is that the variation in when a GC starts is
much higher, leading to a significant amount of assists in some GC
cycles. While the GC cycle frequency basically averages out in the
steady-state in the face of this variation, starting a GC late has the
significant drawback of reducing application latencies.

This CL thus biases the pacer toward avoiding assists by picking a
cons/mark smoothing function that takes the maximum measured cons/mark
over 5 cycles total. I picked 5 cycles because empirically this was the
best trade-off between window size and smoothness for a uniformly
distributed jitter in the cons/mark signal. The cost here is that if
there's a significant phase change in the application that makes it less
active with the GC, then we'll be using a stale cons/mark measurement
for 5 cycles. I suspect this is fine precisely because this only happens
when the application becomes less active, i.e. when latency matters
less.

Another good reason for this particular bias is that even though the GC
might start earlier and end earlier on average, resulting in more
frequent GC cycles and potentially worse throughput, it also means that
it uses less memory used on average. As a result, there's a reasonable
workaround in just turning GOGC up slightly to reduce GC cycle
frequency and bringing memory (and hopefully throughput) levels back to
the same baseline. Meanwhile, there should still be fewer assists than
before which is just a clear improvement to latency.

Lastly, this CL updates the GC pacer tests to capture this bias against
assists and toward GC cycles starting earlier in the face of noise.

Sweet benchmarks didn't show any meaningful difference, but real
production applications showed a reduction in tail latencies of up
to 45%.

Updates #56966.

Change-Id: I8f03d793f9a1c6e7ef3524d18294dbc0d7de6122
Reviewed-on: https://go-review.googlesource.com/c/go/+/467875
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2023-03-21 19:27:18 +00:00
Austin Clements
9eba17ff90 runtime: for deep stacks, print both the top 50 and bottom 50 frames
This is relatively easy using the new traceback iterator.

Ancestor tracebacks are now limited to 50 frames. We could keep that
at 100, but the fact that it used 100 before seemed arbitrary and
unnecessary.

Fixes #7181
Updates #54466

Change-Id: If693045881d84848f17e568df275a5105b6f1cb0
Reviewed-on: https://go-review.googlesource.com/c/go/+/475960
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
2023-03-21 19:14:14 +00:00
Tobias Klauser
6be7fd3f9b runtime: let (*sigctxt).r9 return the correct register value on netbsd
Fixes #59152

Change-Id: I7f89e2b48db9ff120d7cd094b72ded865874e961
Reviewed-on: https://go-review.googlesource.com/c/go/+/478135
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
2023-03-21 18:51:53 +00:00
Cherry Mui
f24afeef9a cmd/link: improve error message and debugging
Correct an error message to missing section, not unreachable
symbol.

Also, under -v >= 2, dump symbol info on error for debugging.

Updates #58966.

Change-Id: I0f832c517d64f4b672b313a8b9be2d028744f945
Reviewed-on: https://go-review.googlesource.com/c/go/+/476735
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2023-03-21 18:44:09 +00:00
Paul E. Murphy
5f1a0320b9 internal/bytealg: rewrite PPC64 Compare
Merge the P8 and P9 paths into one. This removes the need for
a runtime CPU check and maintaining two separate code paths.

This takes advantage of overlapping checks, and the P9 SETB
(emulated with little overhead on P8) to speed up comparisons
of small strings.

Similarly, the SETB instruction can be used on GOPPC64=power9
which provides a small speedup over using a couple ISELs. This
only accounts for a few percent on very small strings, thus
results of running P8 codegen on P9 are left out.

For the baseline on a power8 machine:

BytesCompare/1     7.76ns ± 0%  6.38ns ± 0%  -17.71%
BytesCompare/2     7.77ns ± 0%  6.36ns ± 0%  -18.12%
BytesCompare/3     7.56ns ± 0%  6.36ns ± 0%  -15.79%
BytesCompare/4     7.76ns ± 0%  5.74ns ± 0%  -25.99%
BytesCompare/5     7.48ns ± 0%  5.74ns ± 0%  -23.29%
BytesCompare/6     7.56ns ± 0%  5.74ns ± 0%  -24.06%
BytesCompare/7     7.14ns ± 0%  5.74ns ± 0%  -19.63%
BytesCompare/8     5.58ns ± 0%  5.19ns ± 0%   -7.03%
BytesCompare/9     7.85ns ± 0%  5.19ns ± 0%  -33.86%
BytesCompare/10    7.87ns ± 0%  5.19ns ± 0%  -34.06%
BytesCompare/11    7.59ns ± 0%  5.19ns ± 0%  -31.59%
BytesCompare/12    7.87ns ± 0%  5.19ns ± 0%  -34.02%
BytesCompare/13    7.55ns ± 0%  5.19ns ± 0%  -31.24%
BytesCompare/14    7.47ns ± 0%  5.19ns ± 0%  -30.53%
BytesCompare/15    7.88ns ± 0%  5.19ns ± 0%  -34.09%
BytesCompare/16    6.07ns ± 0%  5.58ns ± 0%   -8.08%
BytesCompare/17    9.05ns ± 0%  5.62ns ± 0%  -37.94%
BytesCompare/18    8.95ns ± 0%  5.62ns ± 0%  -37.24%
BytesCompare/19    8.49ns ± 0%  5.62ns ± 0%  -33.81%
BytesCompare/20    9.07ns ± 0%  5.62ns ± 0%  -38.05%
BytesCompare/21    8.69ns ± 0%  5.62ns ± 0%  -35.37%
BytesCompare/22    8.57ns ± 0%  5.62ns ± 0%  -34.43%
BytesCompare/23    8.31ns ± 0%  5.62ns ± 0%  -32.38%
BytesCompare/24    8.42ns ± 0%  5.62ns ± 0%  -33.23%
BytesCompare/25    9.70ns ± 0%  5.56ns ± 0%  -42.69%
BytesCompare/26    9.53ns ± 0%  5.56ns ± 0%  -41.66%
BytesCompare/27    9.29ns ± 0%  5.56ns ± 0%  -40.15%
BytesCompare/28    9.53ns ± 0%  5.56ns ± 0%  -41.65%
BytesCompare/29    9.37ns ± 0%  5.56ns ± 0%  -40.63%
BytesCompare/30    9.17ns ± 0%  5.56ns ± 0%  -39.36%
BytesCompare/31    9.07ns ± 0%  5.56ns ± 0%  -38.71%
BytesCompare/32    5.81ns ± 0%  5.49ns ± 0%   -5.49%
BytesCompare/33    9.36ns ± 0%  5.32ns ± 0%  -43.17%
BytesCompare/34    9.44ns ± 0%  5.32ns ± 0%  -43.68%
BytesCompare/35    8.91ns ± 0%  5.32ns ± 0%  -40.29%
BytesCompare/36    9.45ns ± 0%  5.32ns ± 0%  -43.71%
BytesCompare/37    8.94ns ± 0%  5.32ns ± 0%  -40.53%
BytesCompare/38    9.08ns ± 0%  5.32ns ± 0%  -41.44%
BytesCompare/39    8.62ns ± 0%  5.32ns ± 0%  -38.33%
BytesCompare/40    7.93ns ± 0%  5.32ns ± 0%  -32.93%
BytesCompare/41    10.1ns ± 0%   5.3ns ± 0%  -47.08%
BytesCompare/42    10.1ns ± 0%   5.3ns ± 0%  -47.43%
BytesCompare/43    9.80ns ± 0%  5.32ns ± 0%  -45.66%
BytesCompare/44    10.3ns ± 0%   5.3ns ± 0%  -48.26%
BytesCompare/45    9.88ns ± 0%  5.33ns ± 0%  -46.08%
BytesCompare/46    9.82ns ± 0%  5.32ns ± 0%  -45.81%
BytesCompare/47    9.73ns ± 0%  5.33ns ± 0%  -45.25%
BytesCompare/48    8.31ns ± 0%  5.22ns ± 0%  -37.19%
BytesCompare/49    11.2ns ± 0%   5.2ns ± 0%  -53.28%
BytesCompare/50    11.1ns ± 0%   5.2ns ± 0%  -52.86%
BytesCompare/51    10.8ns ± 0%   5.2ns ± 0%  -51.37%
BytesCompare/52    11.1ns ± 0%   5.2ns ± 0%  -52.94%
BytesCompare/53    10.8ns ± 0%   5.2ns ± 0%  -51.50%
BytesCompare/54    10.7ns ± 0%   5.2ns ± 0%  -51.09%
BytesCompare/55    10.3ns ± 0%   5.2ns ± 0%  -49.49%
BytesCompare/56    10.9ns ± 0%   5.2ns ± 0%  -51.73%
BytesCompare/57    12.2ns ± 0%   5.3ns ± 0%  -56.92%
BytesCompare/58    12.2ns ± 0%   5.3ns ± 0%  -56.81%
BytesCompare/59    11.5ns ± 0%   5.3ns ± 0%  -54.45%
BytesCompare/60    12.1ns ± 0%   5.3ns ± 0%  -56.67%
BytesCompare/61    11.7ns ± 0%   5.3ns ± 0%  -54.96%
BytesCompare/62    11.9ns ± 0%   5.3ns ± 0%  -55.76%
BytesCompare/63    11.4ns ± 0%   5.3ns ± 0%  -53.73%
BytesCompare/64    6.08ns ± 0%  5.47ns ± 0%   -9.96%
BytesCompare/65    9.87ns ± 0%  5.96ns ± 0%  -39.57%
BytesCompare/66    9.81ns ± 0%  5.96ns ± 0%  -39.25%
BytesCompare/67    9.49ns ± 0%  5.96ns ± 0%  -37.18%
BytesCompare/68    9.81ns ± 0%  5.96ns ± 0%  -39.26%
BytesCompare/69    9.44ns ± 0%  5.96ns ± 0%  -36.84%
BytesCompare/70    9.58ns ± 0%  5.96ns ± 0%  -37.75%
BytesCompare/71    9.24ns ± 0%  5.96ns ± 0%  -35.50%
BytesCompare/72    8.26ns ± 0%  5.94ns ± 0%  -28.09%
BytesCompare/73    10.6ns ± 0%   5.9ns ± 0%  -43.70%
BytesCompare/74    10.6ns ± 0%   5.9ns ± 0%  -43.87%
BytesCompare/75    10.2ns ± 0%   5.9ns ± 0%  -41.83%
BytesCompare/76    10.7ns ± 0%   5.9ns ± 0%  -44.55%
BytesCompare/77    10.3ns ± 0%   5.9ns ± 0%  -42.51%
BytesCompare/78    10.3ns ± 0%   5.9ns ± 0%  -42.29%
BytesCompare/79    10.2ns ± 0%   5.9ns ± 0%  -41.95%
BytesCompare/80    8.74ns ± 0%  5.93ns ± 0%  -32.23%
BytesCompare/81    11.7ns ± 0%   6.8ns ± 0%  -41.87%
BytesCompare/82    11.7ns ± 0%   6.8ns ± 0%  -41.54%
BytesCompare/83    11.1ns ± 0%   6.8ns ± 0%  -38.32%
BytesCompare/84    11.7ns ± 0%   6.8ns ± 0%  -41.59%
BytesCompare/85    11.2ns ± 0%   6.8ns ± 0%  -38.93%
BytesCompare/86    11.2ns ± 0%   6.8ns ± 0%  -38.87%
BytesCompare/87    10.8ns ± 0%   6.8ns ± 0%  -37.07%
BytesCompare/88    11.3ns ± 0%   6.7ns ± 0%  -40.57%
BytesCompare/89    12.6ns ± 0%   6.7ns ± 0%  -46.57%
BytesCompare/90    12.6ns ± 0%   6.7ns ± 0%  -46.44%
BytesCompare/91    11.9ns ± 0%   6.7ns ± 0%  -43.66%
BytesCompare/92    12.5ns ± 0%   6.7ns ± 0%  -46.09%
BytesCompare/93    12.2ns ± 0%   6.7ns ± 0%  -44.90%
BytesCompare/94    12.4ns ± 0%   6.7ns ± 0%  -45.62%
BytesCompare/95    11.8ns ± 0%   6.7ns ± 0%  -43.00%
BytesCompare/96    7.25ns ± 0%  6.62ns ± 0%   -8.70%
BytesCompare/97    11.1ns ± 0%   7.2ns ± 0%  -34.98%
BytesCompare/98    10.9ns ± 0%   7.2ns ± 0%  -34.03%
BytesCompare/99    10.4ns ± 0%   7.2ns ± 0%  -31.19%
BytesCompare/100   10.9ns ± 0%   7.2ns ± 0%  -33.97%
BytesCompare/101   10.4ns ± 0%   7.2ns ± 0%  -31.19%
BytesCompare/102   10.7ns ± 0%   7.2ns ± 0%  -32.72%
BytesCompare/103   10.2ns ± 0%   7.2ns ± 0%  -29.28%
BytesCompare/104   9.38ns ± 0%  7.19ns ± 0%  -23.33%
BytesCompare/105   11.7ns ± 0%   7.2ns ± 0%  -38.60%
BytesCompare/106   11.7ns ± 0%   7.2ns ± 0%  -38.28%
BytesCompare/107   11.3ns ± 0%   7.2ns ± 0%  -36.48%
BytesCompare/108   11.7ns ± 0%   7.2ns ± 0%  -38.49%
BytesCompare/109   11.4ns ± 0%   7.2ns ± 0%  -36.76%
BytesCompare/110   11.3ns ± 0%   7.2ns ± 0%  -36.37%
BytesCompare/111   11.1ns ± 0%   7.2ns ± 0%  -35.05%
BytesCompare/112   9.95ns ± 0%  7.19ns ± 0%  -27.71%
BytesCompare/113   12.7ns ± 0%   7.0ns ± 0%  -44.71%
BytesCompare/114   12.6ns ± 0%   7.0ns ± 0%  -44.23%
BytesCompare/115   12.3ns ± 0%   7.0ns ± 0%  -42.83%
BytesCompare/116   12.7ns ± 0%   7.0ns ± 0%  -44.67%
BytesCompare/117   12.2ns ± 0%   7.0ns ± 0%  -42.41%
BytesCompare/118   12.2ns ± 0%   7.0ns ± 0%  -42.50%
BytesCompare/119   11.9ns ± 0%   7.0ns ± 0%  -40.76%
BytesCompare/120   12.3ns ± 0%   7.0ns ± 0%  -43.01%
BytesCompare/121   13.7ns ± 0%   7.0ns ± 0%  -48.55%
BytesCompare/122   13.6ns ± 0%   7.0ns ± 0%  -48.06%
BytesCompare/123   12.9ns ± 0%   7.0ns ± 0%  -45.44%
BytesCompare/124   13.5ns ± 0%   7.0ns ± 0%  -47.91%
BytesCompare/125   13.0ns ± 0%   7.0ns ± 0%  -46.03%
BytesCompare/126   13.2ns ± 0%   7.0ns ± 0%  -46.72%
BytesCompare/127   12.9ns ± 0%   7.0ns ± 0%  -45.36%
BytesCompare/128   7.53ns ± 0%  6.78ns ± 0%   -9.95%
BytesCompare/256   10.1ns ± 0%   9.6ns ± 0%   -4.35%
BytesCompare/512   23.0ns ± 0%  15.3ns ± 0%  -33.30%
BytesCompare/1024  36.4ns ± 0%  32.8ns ± 0%   -9.83%
BytesCompare/2048  62.0ns ± 0%  56.0ns ± 0%   -9.77%

For GOPPC64=power9 on power9:

BytesCompare/1     5.95ns ± 0%  4.83ns ± 0%  -18.89%
BytesCompare/2     6.37ns ± 0%  4.69ns ± 0%  -26.39%
BytesCompare/3     6.87ns ± 0%  4.68ns ± 0%  -31.79%
BytesCompare/4     5.86ns ± 0%  4.63ns ± 0%  -20.98%
BytesCompare/5     5.84ns ± 0%  4.63ns ± 0%  -20.67%
BytesCompare/6     5.84ns ± 0%  4.63ns ± 0%  -20.70%
BytesCompare/7     5.82ns ± 0%  4.63ns ± 0%  -20.40%
BytesCompare/8     5.81ns ± 0%  4.64ns ± 0%  -20.23%
BytesCompare/9     5.83ns ± 0%  4.71ns ± 0%  -19.19%
BytesCompare/10    6.22ns ± 0%  4.71ns ± 0%  -24.32%
BytesCompare/11    6.94ns ± 0%  4.71ns ± 0%  -32.16%
BytesCompare/12    5.77ns ± 0%  4.71ns ± 0%  -18.34%
BytesCompare/13    5.77ns ± 0%  4.71ns ± 0%  -18.44%
BytesCompare/14    5.77ns ± 0%  4.71ns ± 0%  -18.31%
BytesCompare/15    6.31ns ± 0%  4.71ns ± 0%  -25.32%
BytesCompare/16    4.99ns ± 0%  5.03ns ± 0%   +0.72%
BytesCompare/17    5.07ns ± 0%  5.03ns ± 0%   -0.87%
BytesCompare/18    5.07ns ± 0%  5.03ns ± 0%   -0.81%
BytesCompare/19    5.07ns ± 0%  5.03ns ± 0%   -0.85%
BytesCompare/20    5.07ns ± 0%  5.03ns ± 0%   -0.73%
BytesCompare/21    5.07ns ± 0%  5.03ns ± 0%   -0.81%
BytesCompare/22    5.07ns ± 0%  5.03ns ± 0%   -0.77%
BytesCompare/23    5.07ns ± 0%  5.03ns ± 0%   -0.75%
BytesCompare/24    5.08ns ± 0%  5.07ns ± 0%   -0.12%
BytesCompare/25    5.03ns ± 0%  5.00ns ± 0%   -0.60%
BytesCompare/26    5.02ns ± 0%  5.00ns ± 0%   -0.56%
BytesCompare/27    5.03ns ± 0%  5.00ns ± 0%   -0.60%
BytesCompare/28    5.03ns ± 0%  5.00ns ± 0%   -0.72%
BytesCompare/29    5.03ns ± 0%  5.00ns ± 0%   -0.68%
BytesCompare/30    5.03ns ± 0%  5.00ns ± 0%   -0.76%
BytesCompare/31    5.03ns ± 0%  5.00ns ± 0%   -0.60%
BytesCompare/32    5.02ns ± 0%  5.05ns ± 0%   +0.56%
BytesCompare/33    6.78ns ± 0%  5.16ns ± 0%  -23.84%
BytesCompare/34    7.26ns ± 0%  5.16ns ± 0%  -28.93%
BytesCompare/35    7.78ns ± 0%  5.16ns ± 0%  -33.65%
BytesCompare/36    6.72ns ± 0%  5.16ns ± 0%  -23.24%
BytesCompare/37    7.32ns ± 0%  5.16ns ± 0%  -29.55%
BytesCompare/38    7.26ns ± 0%  5.16ns ± 0%  -28.95%
BytesCompare/39    7.99ns ± 0%  5.16ns ± 0%  -35.40%
BytesCompare/40    6.67ns ± 0%  5.11ns ± 0%  -23.41%
BytesCompare/41    7.25ns ± 0%  5.14ns ± 0%  -29.05%
BytesCompare/42    7.47ns ± 0%  5.14ns ± 0%  -31.11%
BytesCompare/43    7.97ns ± 0%  5.14ns ± 0%  -35.42%
BytesCompare/44    7.29ns ± 0%  5.14ns ± 0%  -29.38%
BytesCompare/45    8.06ns ± 0%  5.14ns ± 0%  -36.20%
BytesCompare/46    7.89ns ± 0%  5.14ns ± 0%  -34.77%
BytesCompare/47    8.59ns ± 0%  5.14ns ± 0%  -40.13%
BytesCompare/48    5.57ns ± 0%  5.12ns ± 0%   -8.18%
BytesCompare/49    6.05ns ± 0%  5.17ns ± 0%  -14.48%
BytesCompare/50    6.05ns ± 0%  5.17ns ± 0%  -14.51%
BytesCompare/51    6.06ns ± 0%  5.17ns ± 0%  -14.61%
BytesCompare/52    6.05ns ± 0%  5.17ns ± 0%  -14.54%
BytesCompare/53    6.06ns ± 0%  5.17ns ± 0%  -14.56%
BytesCompare/54    6.05ns ± 0%  5.17ns ± 0%  -14.54%
BytesCompare/55    6.05ns ± 0%  5.17ns ± 0%  -14.54%
BytesCompare/56    6.02ns ± 0%  5.11ns ± 0%  -15.13%
BytesCompare/57    6.01ns ± 0%  5.14ns ± 0%  -14.56%
BytesCompare/58    6.02ns ± 0%  5.14ns ± 0%  -14.59%
BytesCompare/59    6.02ns ± 0%  5.14ns ± 0%  -14.65%
BytesCompare/60    6.03ns ± 0%  5.14ns ± 0%  -14.71%
BytesCompare/61    6.02ns ± 0%  5.14ns ± 0%  -14.69%
BytesCompare/62    6.01ns ± 0%  5.14ns ± 0%  -14.55%
BytesCompare/63    6.02ns ± 0%  5.14ns ± 0%  -14.65%
BytesCompare/64    6.09ns ± 0%  5.15ns ± 0%  -15.34%
BytesCompare/65    7.83ns ± 0%  5.93ns ± 0%  -24.17%
BytesCompare/66    7.86ns ± 0%  5.93ns ± 0%  -24.52%
BytesCompare/67    8.56ns ± 0%  5.93ns ± 0%  -30.68%
BytesCompare/68    7.90ns ± 0%  5.93ns ± 0%  -24.88%
BytesCompare/69    8.58ns ± 0%  5.93ns ± 0%  -30.84%
BytesCompare/70    8.54ns ± 0%  5.93ns ± 0%  -30.48%
BytesCompare/71    9.18ns ± 0%  5.94ns ± 0%  -35.34%
BytesCompare/72    7.89ns ± 0%  5.86ns ± 0%  -25.76%
BytesCompare/73    8.59ns ± 0%  5.82ns ± 0%  -32.25%
BytesCompare/74    8.52ns ± 0%  5.82ns ± 0%  -31.61%
BytesCompare/75    9.17ns ± 0%  5.82ns ± 0%  -36.50%
BytesCompare/76    8.54ns ± 0%  5.82ns ± 0%  -31.85%
BytesCompare/77    9.25ns ± 0%  5.82ns ± 0%  -37.07%
BytesCompare/78    9.17ns ± 0%  5.82ns ± 0%  -36.48%
BytesCompare/79    10.0ns ± 0%   5.8ns ± 0%  -41.66%
BytesCompare/80    6.76ns ± 0%  5.69ns ± 0%  -15.90%
BytesCompare/81    7.63ns ± 0%  6.70ns ± 0%  -12.23%
BytesCompare/82    7.63ns ± 0%  6.70ns ± 0%  -12.23%
BytesCompare/83    7.63ns ± 0%  6.70ns ± 0%  -12.24%
BytesCompare/84    7.63ns ± 0%  6.70ns ± 0%  -12.24%
BytesCompare/85    7.63ns ± 0%  6.70ns ± 0%  -12.23%
BytesCompare/86    7.63ns ± 0%  6.70ns ± 0%  -12.24%
BytesCompare/87    7.63ns ± 0%  6.70ns ± 0%  -12.24%
BytesCompare/88    7.53ns ± 0%  6.56ns ± 0%  -12.90%
BytesCompare/89    7.53ns ± 0%  6.55ns ± 0%  -12.93%
BytesCompare/90    7.53ns ± 0%  6.55ns ± 0%  -12.93%
BytesCompare/91    7.53ns ± 0%  6.55ns ± 0%  -12.93%
BytesCompare/92    7.53ns ± 0%  6.55ns ± 0%  -12.93%
BytesCompare/93    7.53ns ± 0%  6.55ns ± 0%  -12.93%
BytesCompare/94    7.53ns ± 0%  6.55ns ± 0%  -12.93%
BytesCompare/95    7.53ns ± 0%  6.55ns ± 0%  -12.94%
BytesCompare/96    7.02ns ± 0%  6.45ns ± 0%   -8.09%
BytesCompare/97    8.73ns ± 0%  7.39ns ± 0%  -15.35%
BytesCompare/98    8.71ns ± 0%  7.39ns ± 0%  -15.15%
BytesCompare/99    9.42ns ± 0%  7.39ns ± 0%  -21.57%
BytesCompare/100   8.73ns ± 0%  7.39ns ± 0%  -15.36%
BytesCompare/101   9.43ns ± 0%  7.39ns ± 0%  -21.70%
BytesCompare/102   9.42ns ± 0%  7.39ns ± 0%  -21.59%
BytesCompare/103   10.2ns ± 0%   7.4ns ± 0%  -27.58%
BytesCompare/104   8.74ns ± 0%  7.35ns ± 0%  -15.95%
BytesCompare/105   9.44ns ± 0%  7.30ns ± 0%  -22.67%
BytesCompare/106   9.44ns ± 0%  7.30ns ± 0%  -22.69%
BytesCompare/107   10.2ns ± 0%   7.3ns ± 0%  -28.53%
BytesCompare/108   9.48ns ± 0%  7.30ns ± 0%  -23.04%
BytesCompare/109   10.2ns ± 0%   7.3ns ± 0%  -28.81%
BytesCompare/110   10.2ns ± 0%   7.3ns ± 0%  -28.39%
BytesCompare/111   10.9ns ± 0%   7.3ns ± 0%  -33.18%
BytesCompare/112   7.75ns ± 0%  7.16ns ± 0%   -7.60%
BytesCompare/113   8.57ns ± 0%  7.83ns ± 0%   -8.60%
BytesCompare/114   8.57ns ± 0%  7.83ns ± 0%   -8.63%
BytesCompare/115   8.57ns ± 0%  7.83ns ± 0%   -8.56%
BytesCompare/116   8.57ns ± 0%  7.83ns ± 0%   -8.57%
BytesCompare/117   8.57ns ± 0%  7.83ns ± 0%   -8.56%
BytesCompare/118   8.57ns ± 0%  7.83ns ± 0%   -8.56%
BytesCompare/119   8.57ns ± 0%  7.83ns ± 0%   -8.61%
BytesCompare/120   8.46ns ± 0%  7.71ns ± 0%   -8.80%
BytesCompare/121   8.46ns ± 0%  7.72ns ± 0%   -8.77%
BytesCompare/122   8.46ns ± 0%  7.72ns ± 0%   -8.78%
BytesCompare/123   8.46ns ± 0%  7.72ns ± 0%   -8.76%
BytesCompare/124   8.46ns ± 0%  7.72ns ± 0%   -8.70%
BytesCompare/125   8.46ns ± 0%  7.72ns ± 0%   -8.70%
BytesCompare/126   8.46ns ± 0%  7.72ns ± 0%   -8.70%
BytesCompare/127   8.46ns ± 0%  7.72ns ± 0%   -8.71%
BytesCompare/128   8.19ns ± 0%  7.35ns ± 0%  -10.29%
BytesCompare/256   12.8ns ± 0%  11.4ns ± 0%  -11.23%
BytesCompare/512   22.2ns ± 0%  20.7ns ± 0%   -6.80%
BytesCompare/1024  41.1ns ± 0%  39.8ns ± 0%   -3.12%
BytesCompare/2048  86.5ns ± 0%  81.1ns ± 0%   -6.31%

Change-Id: I7c7fb1f7b891c23c6cade580e7b9928ca1a6efc3
Reviewed-on: https://go-review.googlesource.com/c/go/+/474496
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Archana Ravindar <aravind5@in.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-03-21 13:10:36 +00:00
Huang Qiqi
2ef70d9d0f cmd/internal/obj/loong64: add support for movgr2cf and movcf2gr instructions
Change-Id: I7ff3c8df24ed7990fe104bc2530354c0bd5fe018
Reviewed-on: https://go-review.googlesource.com/c/go/+/475576
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: xiaodong liu <teaofmoli@gmail.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
2023-03-21 06:53:28 +00:00
WANG Xuerui
6f2ef5ec98 cmd/asm, runtime: remove the RSB register from loong64
It was carryover from the mips64 port (where it represented the platform
GP register) but LoongArch platform ABI doesn't have the GP concept.

Change-Id: Iea326ae13676e95b040b52aaadc08d311b507bd3
Reviewed-on: https://go-review.googlesource.com/c/go/+/475815
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-03-21 06:51:28 +00:00
Achille Roussel
dac514ea37 runtime: reuse freed memory blocks on wasm
When compiling Go programs to WebAssembly, the memory allocation
strategy was neither releasing memory to the OS nor reusing blocks freed
by calls to runtime.sysFreeOS.

This CL unifies the plan9 and wasm memory management strategy
since both platforms use a linear memory space and do not have a
mechanism for returning memory blocks to the OS.

Fixes #59061

Change-Id: I282ba93c0fe1a0961a31c0825b2a7e0478b8713d
GitHub-Last-Rev: 1c485be4fb
GitHub-Pull-Request: golang/go#59065
Reviewed-on: https://go-review.googlesource.com/c/go/+/476717
Reviewed-by: Julien Fabre <ju.pryz@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Evan Phoenix <evan@phx.io>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-21 02:45:06 +00:00