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60587 Commits

Author SHA1 Message Date
limeidan
a9ad410801 cmd/internal/obj/loong64: adjust the order of class names
Change-Id: I0ff9a4f7b4758f44eaedfd821ad80a86b58e55a4
Reviewed-on: https://go-review.googlesource.com/c/go/+/565625
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-08-02 14:43:44 +00:00
limeidan
3a55b92ccf runtime: add debug call injection support on loong64
Change-Id: Iaf2bd9da0b35c20c5b57db2eb9b2eea2b662140c
Reviewed-on: https://go-review.googlesource.com/c/go/+/587055
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
2024-08-02 14:38:24 +00:00
Jes Cok
492e2b64da time: fix some typos in CL 512355
Change-Id: Id0fb180a2d7910cdff7f4ab7154d9ceeb2f1cb71
GitHub-Last-Rev: 03658dd974
GitHub-Pull-Request: golang/go#68709
Reviewed-on: https://go-review.googlesource.com/c/go/+/602675
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-08-02 14:34:04 +00:00
Xiaolin Zhao
e761921688 cmd/internal/obj/loong64: add support for instructions F{MAX/NIN}.{S/D}
Go asm syntax:
	F{MAX/MIN}{F/D}		FK, FJ, FD

Equivalent platform assembler syntax:
	f{max/min}.{s/d}	fd, fj, fk

Ref: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html

Change-Id: Ib11fed1fe3700be5ebba33b5818661c4071b7b7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/590676
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
2024-08-02 14:33:57 +00:00
Joel Sing
9abd11440c math/big: implement addVV in riscv64 assembly
This provides an assembly implementation of addVV for riscv64,
processing up to four words per loop, resulting in a significant
performance gain.

On a StarFive VisionFive 2:

               │   addvv.1    │               addvv.2               │
               │    sec/op    │   sec/op     vs base                │
AddVV/1-4         73.45n ± 0%   48.08n ± 0%  -34.54% (p=0.000 n=10)
AddVV/2-4         88.14n ± 0%   58.76n ± 0%  -33.33% (p=0.000 n=10)
AddVV/3-4        102.80n ± 0%   69.44n ± 0%  -32.45% (p=0.000 n=10)
AddVV/4-4        117.50n ± 0%   72.18n ± 0%  -38.57% (p=0.000 n=10)
AddVV/5-4        132.20n ± 0%   82.79n ± 0%  -37.38% (p=0.000 n=10)
AddVV/10-4        216.3n ± 0%   126.8n ± 0%  -41.35% (p=0.000 n=10)
AddVV/100-4      1659.0n ± 0%   885.2n ± 0%  -46.64% (p=0.000 n=10)
AddVV/1000-4     16.089µ ± 0%   8.400µ ± 0%  -47.79% (p=0.000 n=10)
AddVV/10000-4     245.3µ ± 0%   176.9µ ± 0%  -27.88% (p=0.000 n=10)
AddVV/100000-4    2.537m ± 0%   1.873m ± 0%  -26.17% (p=0.000 n=10)
geomean           1.435µ        904.5n       -36.99%

               │   addvv.1    │                addvv.2                │
               │     B/s      │      B/s       vs base                │
AddVV/1-4        830.9Mi ± 0%   1269.5Mi ± 0%  +52.78% (p=0.000 n=10)
AddVV/2-4        1.353Gi ± 0%    2.029Gi ± 0%  +50.00% (p=0.000 n=10)
AddVV/3-4        1.739Gi ± 0%    2.575Gi ± 0%  +48.09% (p=0.000 n=10)
AddVV/4-4        2.029Gi ± 0%    3.303Gi ± 0%  +62.82% (p=0.000 n=10)
AddVV/5-4        2.254Gi ± 0%    3.600Gi ± 0%  +59.69% (p=0.000 n=10)
AddVV/10-4       2.755Gi ± 0%    4.699Gi ± 0%  +70.54% (p=0.000 n=10)
AddVV/100-4      3.594Gi ± 0%    6.734Gi ± 0%  +87.37% (p=0.000 n=10)
AddVV/1000-4     3.705Gi ± 0%    7.096Gi ± 0%  +91.54% (p=0.000 n=10)
AddVV/10000-4    2.430Gi ± 0%    3.369Gi ± 0%  +38.65% (p=0.000 n=10)
AddVV/100000-4   2.350Gi ± 0%    3.183Gi ± 0%  +35.44% (p=0.000 n=10)
geomean          2.119Gi         3.364Gi       +58.71%

Change-Id: I727b3d9f8ab01eada7270046480b1430d56d0a96
Reviewed-on: https://go-review.googlesource.com/c/go/+/595395
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2024-08-02 14:14:14 +00:00
Xiaolin Zhao
11dbbaffe1 cmd/internal/obj/loong64: add support for MOV{GR2FCSR/FCSR2GR/FR2CF/CF2FR} instructions
Go asm syntax example:
	MOVV	R4, FCSR0
	MOVV	FCSR1, R5
	MOVV	F4, FCC0
	MOVV	FCC1, F5

Equivalent platform assembler syntax:
	movgr2fcsr	fcsr0, r4
	movfcsr2gr	r5, fcsr1
	movfr2cf	fcc0, f4
	movcf2fr	f5, fcc1

Ref: https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html

This change also merges the case of floating point move instructions
and add checks for the range of special registers.

Change-Id: Ib08fbce83e7a31dc0ab4857bf9ba959855241d1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/580279
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-08-02 00:29:24 +00:00
Jes Cok
67c3f012cf bytes,slices,strings: optimize Repeat a bit
Like slices.Repeat, use math/bits.Mul to detect overflow in order to
avoid a divide which is slow.

While here, also use builtin min/max to simplify code.

Change-Id: I4a6d8cd5df97fa75f4e324d4be1405ce53c03d31
GitHub-Last-Rev: 54ba5c7126
GitHub-Pull-Request: golang/go#68704
Reviewed-on: https://go-review.googlesource.com/c/go/+/602475
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-01 21:32:50 +00:00
Rhys Hiltner
e50913cefc runtime: avoid futile mark worker acquisition
During the GC mark phase, one of the first behaviors of findRunnable is
to check if it should execute a GC mark worker. Mark workers often run
for many milliseconds in a row, so programs that invoke the scheduler
more frequently will see that condition trigger only a tiny fraction of
the time.

Obtaining a mark worker from the gcBgMarkWorkerPool involves a CAS on a
single memory location that's shared across the process. When GOMAXPROCS
is large, the resulting contention can waste a significant amount of CPU
time. But a sufficiently large GOMAXPROCS also means there's no need for
fractional mark workers, making it easier to check ahead of time if we
need to run a worker.

Check, without committing to a particular worker, whether we would even
want to run one.

For #68399

Change-Id: I5d8578c2101ee20a8a4156a029584356095ea118
Reviewed-on: https://go-review.googlesource.com/c/go/+/602477
Reviewed-by: Michael Pratt <mpratt@google.com>
Auto-Submit: Rhys Hiltner <rhys.hiltner@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-01 21:11:15 +00:00
Michael Pratt
2caf638e2f runtime: don't use maps in js note implementation
notes are used in sensitive locations in the runtime, such as those with
write barriers forbidden. Maps aren't designed for this sort of internal
use.

Notably, newm -> notewakeup doesn't allow write barriers, but mapaccess1
-> panic contains write barriers. The js runtime only builds right now
because the map access is optimized to mapaccess1_fast64, which happens
to not have a panic call.

The initial swisstable map implementation doesn't have a fast64 variant.
While we could add one, it is a bad idea in general to use a map in such
a fragile location. Simplify the implementation by storing the metadata
directly in the note, and using a linked list for checkTimeouts.

For #54766.

Cq-Include-Trybots: luci.golang.try:gotip-js-wasm
Change-Id: Ib9d39f064ae4ad32dcc873f799428717eb6c2d5a
Reviewed-on: https://go-review.googlesource.com/c/go/+/595558
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-08-01 19:13:58 +00:00
Michael Pratt
38f0a829aa debug/buildid: treat too large string as "not a Go executable"
If the length does not fit in int, saferio.ReadDataAt returns
io.ErrUnexpectedEOF. Treat is as an invalid format.

Fixes #68692.
For #68592.

Cq-Include-Trybots: luci.golang.try:gotip-linux-386-longtest
Change-Id: Ie856f29c907fd10e6d9b7dfbb6f0d8008a75a1c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/602435
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-01 15:02:27 +00:00
Mateusz Poliwczak
b26134bf17 crypto: implement encoding.BinaryAppender for all crypto hashes
For #62384

Change-Id: I6fc7a7b8b85e02c880f1d16e0467f5076d477f0f
GitHub-Last-Rev: 90ba7bae6a
GitHub-Pull-Request: golang/go#68651
Reviewed-on: https://go-review.googlesource.com/c/go/+/601776
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-01 14:57:46 +00:00
Cuong Manh Le
09eefb3a4d cmd/compile: add race instrumentation during walkCompare
So the racy usage could be detected after re-writing "==" to
runtime.memequal call.

Updates #61204

Change-Id: Idb4ac37e55813cc87f9d16aa656fb447edf69ea1
Reviewed-on: https://go-review.googlesource.com/c/go/+/601117
Reviewed-by: Egon Elbre <egonelbre@gmail.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-01 14:57:13 +00:00
Xin Hao
4c05a23bb6 go/types: fix typo in comment
Change-Id: Ic0ea0f0de3f94e2d89bf76176c51f42e87b1bad7
GitHub-Last-Rev: 29517a07f9
GitHub-Pull-Request: golang/go#68695
Reviewed-on: https://go-review.googlesource.com/c/go/+/602177
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-01 14:56:12 +00:00
Rhys Hiltner
6ac87aa5b3 runtime: measure speed of procyield and osyield
These are delay primitives for lock2. If a mutex isn't immediately
available, we can use procyield to tell the processor to wait for a
moment, or osyield to allow the OS to run a different process or thread
if one is waiting. We expect a processor-level yield to be faster than
an os-level yield, and for both of them to be fast relative to entering
a full sleep (via futexsleep or semasleep).

Each architecture has its own way of hinting to the processor that it's
in a spin-wait loop, so procyield presents an architecture-independent
interface for use in lock_futex.go and lock_sema.go.

Measure the (single-threaded) speed of these to confirm.

For #68578

Change-Id: I90cd46ea553f2990395aceb048206285558c877e
Reviewed-on: https://go-review.googlesource.com/c/go/+/601396
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-01 03:06:18 +00:00
limeidan
bd85a3b153 cmd/internal/obj/loong64: remove Class C_LEXT and C_SEXT
There is no need to check whether the symbol is empty, since we have already
checked it before. In addition, it is enough to use C_ADDR to represent memory
access, C_LEXT and C_SEXT are not needed.

Change-Id: I7158d6b549482b35cd9ac5fba781648fb3f21922
Reviewed-on: https://go-review.googlesource.com/c/go/+/565615
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
2024-08-01 02:53:30 +00:00
Guoqi Chen
3214129a83 cmd/compiler,internal/runtime/atomic: optimize Load{64,32,8} on loong64
The LoadAcquire barrier on Loong64 is "dbar 0x14", using the correct
barrier in Load{8,32,64} implementation can improve performance.

goos: linux
goarch: loong64
pkg: internal/runtime/atomic
cpu: Loongson-3A6000-HV @ 2500.00MHz
                |  bench.old   | bench.new                           |
                |  sec/op      |  sec/op        vs base              |
AtomicLoad64      17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad64-2    17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad64-4    17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad        17.220n ± 0%   4.402n ± 0%   -74.44% (p=0.000 n=20)
AtomicLoad-2      17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad-4      17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad8       17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad8-2     17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
AtomicLoad8-4     17.210n ± 0%   4.402n ± 0%   -74.42% (p=0.000 n=20)
geomean           17.21n         4.402n        -74.42%

goos: linux
goarch: loong64
pkg: internal/runtime/atomic
cpu: Loongson-3A5000 @ 2500.00MHz
                |  bench.old   | bench.new                           |
                |  sec/op      |  sec/op        vs base              |
AtomicLoad64      18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad64-2    18.81n ± 0%    10.41n ± 0%   -44.66% (p=0.000 n=20)
AtomicLoad64-4    18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad        18.81n ± 0%    10.41n ± 0%   -44.66% (p=0.000 n=20)
AtomicLoad-2      18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad-4      18.81n ± 0%    10.42n ± 0%   -44.63% (p=0.000 n=20)
AtomicLoad8       18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
AtomicLoad8-2     18.82n ± 0%    10.41n ± 0%   -44.70% (p=0.000 n=20)
AtomicLoad8-4     18.82n ± 0%    10.41n ± 0%   -44.69% (p=0.000 n=20)
geomean           18.82n         10.41n        -44.68%

Change-Id: I9d47c9d6f359c4f2e41035ca656429aade2e7847
Reviewed-on: https://go-review.googlesource.com/c/go/+/581357
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-08-01 02:17:13 +00:00
limeidan
01ab9a016a cmd/internal/obj/loong64: optimize the code logic of jump instructions
If p.To.Sym is nil, that means we can get the target offset from
p.To.Target().pc - c.pc,only when p.To.Sym is not nil, we need relocation
to get the true address of target symbol.

Change-Id: Ied52f675c6aa6e8fb8d972b7699f5cadd1ecb268
Reviewed-on: https://go-review.googlesource.com/c/go/+/565627
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Meidan Li <limeidan@loongson.cn>
2024-08-01 00:51:41 +00:00
limeidan
864513dda9 cmd/internal/obj/loong64: merge two branch classes into one
When the kind of the operand is TYPE_BRANCH, we cannot determine
whether it is a long branch or a short branch, so we merge these
two classes into one.

Change-Id: I7d7fa8f62ff02791ec3de4e3e3f7610bc9cb1743
Reviewed-on: https://go-review.googlesource.com/c/go/+/565626
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-01 00:51:17 +00:00
limeidan
ee3da50617 cmd/internal/obj/loong64: reclassify three-register operation instructions and two-register operation instructions
The instructions belonging to case 32 have the same structure as the
instructions in case 2.

The instructions in case 33 are actually two-register operation
instructions. We move their definitions from function oprrr to oprr and
merge their implementation into case 9.

Change-Id: Id04aaa497e78d8198a58f8d406876d16b3f393a7
Reviewed-on: https://go-review.googlesource.com/c/go/+/565616
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-08-01 00:51:04 +00:00
Robert Griesemer
ecadbe9faa go/types: generate recording.go
Change-Id: I530df137bcb5094a828f97ecbe204265b50c8546
Reviewed-on: https://go-review.googlesource.com/c/go/+/602118
Auto-Submit: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Tim King <taking@google.com>
2024-08-01 00:14:29 +00:00
Manuel Sabin
4b2716348c crypto/internal/cryptotest: add tests for the cipher.BlockMode interface
This CL creates tests for the cipher.BlockMode interface in the new
cryptotest package.  This set of tests is called from the tests of
implementations of the BlockMode interface e.g. cbc_test.go

Updates #25309

Change-Id: I3685bbee24d08d66f5bb4b7f001cbf520c844881
Reviewed-on: https://go-review.googlesource.com/c/go/+/595120
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Russell Webb <russell.webb@protonmail.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2024-07-31 23:30:25 +00:00
Ian Lance Taylor
fa861f8822 cmd/cgo: document workaround for C struct_stat function
For #68682

Change-Id: I13b61f915925a9ee510e0a42e95da7a83678b3b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/602215
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-31 23:17:05 +00:00
Alan Donovan
2c1bbe7e32 go/types: add go1.23 iterator methods for 10 exported types
These methods will not be mirrored in types2 until the
bootstrap compiler reaches go1.23; therefore range-over-func
statements must not be used in code common to types + types2.

Fixes #66626

Change-Id: I3c2c15e3652ee95d9aff208d8a188b912ed5bc9a
Reviewed-on: https://go-review.googlesource.com/c/go/+/575455
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2024-07-31 22:54:09 +00:00
Michael Pratt
0a4215c234 cmd/compile: keep internal/runtime packages sorted
This is a minor cleanup from CL 600436.

For #65355.

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-darwin-amd64-longtest
Change-Id: I8e27f0c6ba6bd35f4aa2b9d53c394fb5f1eb433d
Reviewed-on: https://go-review.googlesource.com/c/go/+/595116
Reviewed-by: Austin Clements <austin@google.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-31 22:11:37 +00:00
aimuz
38c427c9dc net: replace sort with slices for address and DNS record sorting
This change replaces the usage of the "sort" package with the "slices"
package for sorting IP addresses and DNS records. The new approach
simplifies the code and improves readability by leveraging the
slices.SortFunc and slices.SortStableFunc functions.

- Updated addrselect.go to use slices.SortStableFunc for sorting IP
  addresses based on RFC 6724.
- Refactored dnsclient.go to use slices.SortFunc for sorting SRV and MX
  records by priority and weight.

This change also reduces the dependency tree for the package by
removing the dependency on "sort" and its transitive dependencies,
resulting in a leaner build.

Change-Id: I436dacc8dd1e8f2f7eeac44d6719ce248394d8a9
GitHub-Last-Rev: 3720a49081
GitHub-Pull-Request: golang/go#67503
Reviewed-on: https://go-review.googlesource.com/c/go/+/586635
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Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2024-07-31 22:06:36 +00:00
Robert Griesemer
1b6bb779ef go/types, types2: factor out typechecker-specific code from recording.go
With this CL, the go/types and types2 recording.go files are
mostly identical except for the use of different syntax trees.
Preparation for generating go/types/recording.go from types2
sources.

Change-Id: Iea85f8554ee04f1e1f7da63f8019725ac8f6caf5
Reviewed-on: https://go-review.googlesource.com/c/go/+/602117
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-31 21:30:46 +00:00
Russ Cox
c5de950766 time: optimize time <-> date conversions
Optimize the time -> date and date -> time conversions using the
methods outlined in:

    Cassio Neri and Lorenz Schneider,
    “Euclidean affine functions and their
    application to calendar algorithms,”
    SP&E 2023. https://doi.org/10.1002/spe.3172

I took the opportunity to introduce some types to make the code
significantly clearer and optimize a few other parts I noticed along
the way. The result is noticeably faster across the board.

Probably this doesn't matter much in real programs, but all the other
languages are picking this up, and it is less code than what we had
before.

Proposal #63844 suggested adopting this algorithm and simultaneously
restricting the range of valid years supported by the package from its
current ±292277022399 (plenty for anyone) to a mere ±32767.
This CL does NOT make any such restriction. The range of valid years
is almost exactly what it was before. (It is the same size but shifted
10 months earlier, which no one will ever care about.)

This CL removes any real need to consider the proposal, since it
would be a breaking change for truly insignificant benefit.

Thanks to Normandes Junior and Cassio Neri for CL 548155
and for discussion on #63844, which prompted me to write this CL.
This CL is all new code and does not include code from CL 548155
except as noted in the isLeap function implementation.

For #63844.

goos: linux
goarch: amd64
pkg: time
cpu: AMD Ryzen 9 7950X 16-Core Processor
                        │ timeold.txt  │             timenew.txt              │
                        │    sec/op    │   sec/op     vs base                 │
Format-32                  156.5n ± 1%   148.1n ± 1%   -5.37% (n=125)
FormatRFC3339-32           118.5n ± 1%   112.1n ± 1%   -5.40% (n=125)
FormatRFC3339Nano-32       119.2n ± 1%   113.0n ± 1%   -5.20% (n=125)
FormatNow-32               96.88n ± 2%   97.22n ± 1%        ~ (p=0.173 n=125)
MarshalJSON-32             79.77n ± 1%   75.82n ± 1%   -4.95% (n=125)
MarshalText-32             79.25n ± 1%   76.18n ± 1%   -3.87% (p=0.000 n=125)
Parse-32                   79.80n ± 1%   78.28n ± 1%   -1.90% (p=0.000 n=125)
ParseRFC3339UTC-32         29.10n ± 1%   28.90n ± 0%        ~ (p=0.094 n=125)
ParseRFC3339UTCBytes-32    30.72n ± 1%   30.88n ± 1%        ~ (p=0.894 n=125)
ParseRFC3339TZ-32          92.29n ± 0%   90.27n ± 1%   -2.19% (p=0.000 n=125)
ParseRFC3339TZBytes-32     133.4n ± 1%   132.0n ± 1%        ~ (p=0.004 n=125)
ParseDuration-32           41.11n ± 3%   44.08n ± 2%        ~ (p=0.088 n=125)
Hour-32                    2.834n ± 0%   2.829n ± 1%        ~ (p=0.891 n=125)
Second-32                  2.811n ± 1%   2.828n ± 1%        ~ (p=0.208 n=125)
Date-32                    9.228n ± 1%   5.788n ± 0%  -37.28% (n=125)
Year-32                    6.404n ± 1%   4.673n ± 1%  -27.03% (n=125)
YearDay-32                 6.399n ± 1%   5.802n ± 0%   -9.33% (n=125)
Month-32                   9.108n ± 1%   4.700n ± 1%  -48.40% (n=125)
Day-32                     9.106n ± 1%   4.686n ± 1%  -48.54% (n=125)
ISOWeek-32                10.060n ± 0%   7.998n ± 1%  -20.50% (n=125)
GoString-32                84.59n ± 1%   83.82n ± 1%        ~ (p=0.027 n=125)
DateFunc-32                6.993n ± 0%   6.144n ± 1%  -12.14% (n=125)
UnmarshalText-32           94.78n ± 2%   89.49n ± 1%   -5.58% (n=125)
geomean                    29.60n        26.13n       -11.70%

goos: darwin
goarch: arm64
pkg: time
cpu: Apple M3 Pro
                        │ timeold-m3.txt │            timenew-m3.txt            │
                        │     sec/op     │   sec/op     vs base                 │
Format-12                    152.6n ± 0%   147.4n ± 0%   -3.41% (n=125)
FormatRFC3339-12            101.50n ± 0%   92.02n ± 0%   -9.34% (n=125)
FormatRFC3339Nano-12        101.30n ± 0%   92.68n ± 0%   -8.51% (n=125)
FormatNow-12                 93.50n ± 0%   94.65n ± 0%   +1.23% (p=0.000 n=125)
MarshalJSON-12               50.06n ± 0%   48.25n ± 0%   -3.62% (n=125)
MarshalText-12               49.70n ± 0%   47.51n ± 0%   -4.41% (n=125)
Parse-12                     97.91n ± 0%   95.90n ± 0%   -2.05% (n=125)
ParseRFC3339UTC-12           36.45n ± 0%   35.78n ± 1%   -1.84% (n=125)
ParseRFC3339UTCBytes-12      38.11n ± 0%   37.42n ± 0%   -1.81% (n=125)
ParseRFC3339TZ-12           100.80n ± 1%   97.58n ± 0%   -3.19% (n=125)
ParseRFC3339TZBytes-12       111.8n ± 1%   107.4n ± 0%   -3.94% (n=125)
ParseDuration-12             52.70n ± 0%   52.84n ± 0%        ~ (p=0.028 n=125)
Hour-12                      2.657n ± 0%   2.655n ± 0%        ~ (p=0.018 n=125)
Second-12                    2.656n ± 0%   2.654n ± 0%        ~ (p=0.084 n=125)
Date-12                      8.201n ± 0%   5.055n ± 0%  -38.36% (n=125)
Year-12                      5.694n ± 0%   4.086n ± 0%  -28.24% (n=125)
YearDay-12                   5.693n ± 0%   4.828n ± 0%  -15.19% (n=125)
Month-12                     8.206n ± 0%   4.231n ± 0%  -48.44% (n=125)
Day-12                       8.199n ± 0%   4.551n ± 0%  -44.49% (n=125)
ISOWeek-12                   9.032n ± 0%   7.298n ± 0%  -19.20% (n=125)
GoString-12                  62.78n ± 0%   60.61n ± 0%   -3.46% (n=125)
DateFunc-12                  7.318n ± 0%   6.431n ± 0%  -12.12% (n=125)
UnmarshalText-12             99.66n ± 0%   95.64n ± 0%   -4.03% (n=125)

Change-Id: I089a072a731914702f8087018d00960e129f86b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/586257
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-31 21:29:46 +00:00
Robert Griesemer
31e692be43 go/types, types2: move type recording functionality in its own files
This CL simply moves recording functions into recording.go and
adjust the imports as needed. There are no other code changes.
Preparation for generating go/types/recording.go from types2
sources.

Change-Id: Idc5850462a78afb1bfce78ba216722d07c8bca1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/602116
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Tim King <taking@google.com>
2024-07-31 21:23:48 +00:00
Michael Pratt
7dac9898c3 reflect: add flag tests for MapOf
Add two tests that verify that MapOf sets the map NeedsKeyUpdate and
HashMightPanic flags in the created map. Missing these flags would cause
correctness issues not otherwise caught in the reflect tests.

For #54766.

Change-Id: Icd5f117e0794e7b4d1b70fa94e5afbe97c4543e3
Reviewed-on: https://go-review.googlesource.com/c/go/+/594656
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Michael Pratt <mpratt@google.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-07-31 20:45:55 +00:00
Robert Griesemer
385e963e70 go/types, types2: record type parameters in receiver expressions as uses
CL 594740 rewrote type checking of method receiver types. Because that
CL takes apart receivers "manually" rather than using the regular code
for type checking type expressions, type parameters in receiver type
expressions were only recorded as definitions (in Info.Defs).

Before that CL, such type parameters were simultaneously considered
definitions (they are declared by the receiver type expression) and
uses (they are used to instantiate the receiver type expression).

Adjust the receiver type checking code accordingly and record its
type parameters also in Info.Uses and Info.Types.

While at it, in go/types, replace declareTypeParams (plural) with
declareTypeParam (singular) to more closely match types2 code.
No functionality or semantic change.

Fixes #68670.
For #51343.

Change-Id: Ibbca1a9b92e31b0dc972052a2827deeab49da98b
Reviewed-on: https://go-review.googlesource.com/c/go/+/601935
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Tim King <taking@google.com>
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Reviewed-by: Robert Griesemer <gri@google.com>
2024-07-31 20:27:58 +00:00
Cuong Manh Le
ab7435abd9 cmd/compile: add comment for the context on mismatch import path
Follow up suggestion in CL 596396.

Updates #54542

Change-Id: I47bf66684bb8397dc1cfbc4479e2279e59a40cfb
Reviewed-on: https://go-review.googlesource.com/c/go/+/596515
Reviewed-by: Michael Knyszek <mknyszek@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2024-07-31 19:54:27 +00:00
Sam Thanawalla
34ddde165d cmd/go: fix windows test failure for test_buildinfo_godebug_issue68053
Fix required adding $GOEXE because windows will produce a .exe file.

Fixes: #68673

Cq-Include-Trybots: luci.golang.try:gotip-linux-amd64-longtest,gotip-windows-amd64-longtest
Change-Id: I25206de362ee4be6a9c54bd1baa405f325d79313
Reviewed-on: https://go-review.googlesource.com/c/go/+/602095
Reviewed-by: Michael Matloob <matloob@golang.org>
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2024-07-31 16:47:55 +00:00
Manuel Sabin
650abbc0b0 crypto/internal/cryptotest: add tests for the cipher.Block interface
This CL creates tests for the cipher.Block interface in the cryptotest
package.  This set of tests is called from the tests of implementation
of the Block interface e.g. aes_test.go and des_test.go.

Updates #25309

Change-Id: Ieea3752147c8163fc73a849cfcb8fa011205d2c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/594018
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Russell Webb <russell.webb@protonmail.com>
Auto-Submit: Filippo Valsorda <filippo@golang.org>
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2024-07-31 15:43:13 +00:00
limeidan
b53809d75d cmd/internal/obj/loong64: optimize instruction implementation
The plan9 instructions ASLLV and -ASLLV are translated into the same assembly
instructions, so -ASLLV can be removed and replaced with ASLLV in the
corresponding position.

ASRLV and -ASRLV have the same reason as the above two instructions.

Change-Id: I4bd79ca7bb070f7a924a0205ef2f19cf2b9ae2c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/565623
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
2024-07-31 15:39:35 +00:00
limeidan
5ca7d4645f cmd/internal/obj/loong64: remove case 17 in func asmout
There is no relative optab item case 17, remove it.

Change-Id: I3ceaa3283c3641afafd46362737ff847a1d80665
Reviewed-on: https://go-review.googlesource.com/c/go/+/565617
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Auto-Submit: abner chenc <chenguoqi@loongson.cn>
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Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2024-07-31 15:38:21 +00:00
limeidan
0214749fef cmd/internal/obj/loong64: rename Class to represent the external symbol address
There is no need to define another C_SECON Class to express short
external symbol address, because the external symbol address is unknown
in assembler, relocate it in linker.

Change-Id: Id9fbd848c43ca63a21f2b6640e947140c26eeaf7
Reviewed-on: https://go-review.googlesource.com/c/go/+/565624
Reviewed-by: Qiqi Huang <huangqiqi@loongson.cn>
Reviewed-by: sophie zhao <zhaoxiaolin@loongson.cn>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: abner chenc <chenguoqi@loongson.cn>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Auto-Submit: abner chenc <chenguoqi@loongson.cn>
2024-07-31 15:36:31 +00:00
David Chase
d32133af77 cmd/compile: fix order of map iteration in deadlocals
This makes builds reproducible again.

Fixes #68672
Updates #65158

Change-Id: I260180f52e992c702ab89050deb6484087ae265f
Reviewed-on: https://go-review.googlesource.com/c/go/+/602075
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2024-07-31 15:13:49 +00:00
Michael Pratt
eea2e929fa debug/buildinfo: reuse buffer in searchMagic
Allocating a new buffer for each chunk in searchMagic is very
inefficient. Refactor reading to allow us to reuse the same buffer for
each iteration.

This reduces the runtime of `go version` on a 2.5GB non-Go binary from
~1s and ~25MB RSS to ~250ms and ~15MB RSS.

For #68592.

Change-Id: Idae5c2c9b3b8a7158d5cc7f2f008998be75fd7af
Reviewed-on: https://go-review.googlesource.com/c/go/+/601460
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2024-07-31 14:26:42 +00:00
Michael Pratt
b6e81a5129 debug/buildinfo: read data in chunks
Rather than reading the entire data segment into memory, read it in
smaller chunks to keep memory usage low.

For typically Go binaries, this doesn't matter much. For those, we read
the .go.buildinfo section, which should be quite small. But for non-Go
binaries (or Go binaries with section headers stripped), we search the
entire loadable data segment, which could be quite large.

This reduces the time for `go version` on a 2.5GB non-Go binary from
~1.2s and 1GB RSS (!!) to ~1s and ~25MB RSS.

Fixes #68592.

Change-Id: I9218854c5b6f2aa1331f561ab0850a9fd62ef23b
Reviewed-on: https://go-review.googlesource.com/c/go/+/601459
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-31 14:26:34 +00:00
Than McIntosh
8246171bae cmd: add README generation for compiler + linker script tests
Add in automatic README generation and README consistency checking for
the cmd/compile and cmd/link script tests. This code is adapted from
the similar facility in cmd/go (e.g. scriptreadme_test.go); the README
helps folks writing new tests understand the mechanics.

Updates #68606.

Change-Id: I8ff7ff8e814abd4385bd670440511b2c60a4cef6
Reviewed-on: https://go-review.googlesource.com/c/go/+/601756
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-31 13:21:20 +00:00
Than McIntosh
b60f88d810 cmd/internal/script: new hook for adding in toolchain script conditions
Introduce a new function AddToolChainScriptConditions that augments a
default "script.Cond" set with a collection of useful conditions,
including godebug/goexperiment, cgo, race support, buildmode, asan,
msan, and so on. Having these conditions available makes it easier to
write script tests that deal with specific build-flavor corner cases.
The functions backing the new conditions are helper functions migrated
over from the Go command's script test setup.

Updates #68606.

Change-Id: I14def1115b54dc47529c983abcd2c5ea9326b9de
Reviewed-on: https://go-review.googlesource.com/c/go/+/601715
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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2024-07-31 13:21:14 +00:00
Robert Griesemer
86bec1ec19 go/types: record pointer and parentheses in receiver expressions
CL 594740 rewrote type checking of method receiver types. Because that
CL takes apart receivers "manually" rather than using the regular code
for type checking type expressions, pointer and parenthesized receiver
type expressions were not recorded anymore.

Adjust the code that typechecks method receivers to a) use ordinary
type expression checking for non-generic receivers, and b) to record
a missing pointer and any intermediate parenthesized expressions in
case of a generic receiver.

Add many extra tests verifying that the correct types for parenthesized
and pointer type expressions are recorded in various source positions.

Note that the parser used by the compiler and types2 doesn't encode
unnecessary parentheses in type expressions in its syntax tree.
As a result, the tests that explicitly test parentheses don't work
in types2 and are commented out.

This CL adds code (disabled by default) to the parser to encode
parentheses in type expressions in the syntax tree. When enabled,
the commented out types2 tests pass like in go/types.

Fixes #68639.
For #51343.

Change-Id: Icf3d6c76f7540ee53e229660be8d78bb25380539
Reviewed-on: https://go-review.googlesource.com/c/go/+/601657
Reviewed-by: Tim King <taking@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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2024-07-30 23:42:46 +00:00
Sean Liao
7299212a42 net/http: match os.File.Readdir behavior in DotFileHiding
Fixes #67697

Change-Id: I26b26262d885d0704851c08c79e7b2b4872b65ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/598075
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2024-07-30 23:08:52 +00:00
Ian Lance Taylor
0b7cda77ca cmd/cgo/internal/testsanitizers: avoid clang error in msan8.go
In clang 16 the option -fsanitize-memory-param-retval was turned on by
default. That option causes MSAN to issue a warning when calling a
function with an uninitialized value. The msan8 test relies on being
able to do this, in order to get uninitialized values into registers.

This CL fixes the test by adding maybe_undef attributes that tell
clang that it's OK to pass an uninitialized variable. The docs for
maybe_undef say: "Please note that this is an attribute that is used as
an internal implementation detail and not intended to be used by
external users." So this may break in the future, but it does work for now.

Fixes #64616

Change-Id: I0ac8c0520fce8c32e26d2a5efb7ae5e02461c1ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/601779
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2024-07-30 23:03:01 +00:00
Mateusz Poliwczak
96f7159705 go/printer: correct cindex meaning in commentInfo comments
(*printer).nextComment increases cindex by one after each call
and it always points to the next element.

Change-Id: I65754ab6e30e10dc7473882e39737d2e0dc29070
GitHub-Last-Rev: f859283324
GitHub-Pull-Request: golang/go#68032
Reviewed-on: https://go-review.googlesource.com/c/go/+/592557
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-30 20:12:39 +00:00
Michael Matloob
1f72ce31f0 cmd/go/internal/load: recompute test variant's build info if necessary
The buildinfo used for a testmain is a copy from the buildinfo produced
for the package under test, and that in turn is only computed if the
package under test is package main. If there are //go:debug directives
in a test file for package main, the godebugs for the testmain (which
are computed using the regular package files as well as the test files'
//go:debug directives) will be different from those used to produce the
buildinfo of the package under test (computed using the //go:debug
directives only in the main package). In that case, recompute the
buildinfo for the testmain to incorporate the new godebug information.

Since we've only been generating buildinfo for tests on package main, in
this CL we'll only recompute the buildinfo if the test is for package
main. It's not clear to me though if we should be computing the
buildinfo for all test mains (or none of them?)

Fixes #68053

Change-Id: Ib6cdb118e2f233de483c33e171c0cd03df1fc7be
Reviewed-on: https://go-review.googlesource.com/c/go/+/595961
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Sam Thanawalla <samthanawalla@google.com>
2024-07-30 19:14:11 +00:00
Austin Clements
c7227bc72c runtime: make TestDebugLogInterleaving much more robust
The current test often doesn't actually generate enough interleaving
to result in multiple log shards. This CL rewrites this test to
forcibly create at least 10 log shards with interleaved log messages.
It also tests dlog's robustness to being held across M and P switches.

Change-Id: Ia913b17c0392384ff679832047f359945669bb15
Reviewed-on: https://go-review.googlesource.com/c/go/+/600699
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Austin Clements <austin@google.com>
2024-07-30 17:16:52 +00:00
David Chase
cc258e6785 cmd/compile: add "deadlocals" pass to remove unused locals
This CL adds a "deadlocals" pass, which runs after inlining and before
escape analysis, to prune any unneeded local variables and
assignments. In particular, this helps avoid unnecessary Addrtaken
markings from unreachable closures.

Deadlocals is sensitive to "_ = ..." as a signal of explicit
use for testing.  This signal occurs only if the entire
left-hand-side is "_" targets; if it is
  `_, ok := someInlinedFunc(args)`
then the first return value is eligible for dead code elimination.

Use this (`_ = x`) to fix tests broken by deadlocals elimination.

Includes a test, based on one of the tests that required modification.

Matthew Dempsky wrote this, changing ownership to allow rebases, commits, tweaks.

Fixes #65158.

Old-Change-Id: I723fb69ccd7baadaae04d415702ce6c8901eaf4e
Change-Id: I1f25f4293b19527f305c18c3680b214237a7714c
Reviewed-on: https://go-review.googlesource.com/c/go/+/600498
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: David Chase <drchase@google.com>
Commit-Queue: David Chase <drchase@google.com>
2024-07-30 15:46:27 +00:00
David Chase
7b867b9bb7 cmd/compile/internal/ir: add DoChildrenWithHidden
Analogous to EditChildrenWithHidden.
A commit written by Matthew Dempsky

Old-Change-Id: I9fe0d3ee98d9dbe5f77eb02d666b9f317ee5b6af
Change-Id: I41aacb1545ab3142862b156bd1767fe4a3df4ca0
Reviewed-on: https://go-review.googlesource.com/c/go/+/600497
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
2024-07-30 15:02:21 +00:00
David Chase
4f237ffd16 cmd/compile: verify that rangefunc assigning to no vars works
This adds a test for
   for range seq2rangefunc { ... }
and
   for onevar := range seq2rangefunc { ... }

For #65236.

Change-Id: I083f8e4c19eb4ba0d6024d5314ac29d941141778
Reviewed-on: https://go-review.googlesource.com/c/go/+/596135
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
2024-07-30 15:02:02 +00:00