1
0
mirror of https://github.com/golang/go synced 2024-11-23 12:40:11 -07:00
Commit Graph

55883 Commits

Author SHA1 Message Date
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
Ian Lance Taylor
6a914ee26f cmd/go: use platform.MustLinkExternal in externalLinkingForced
This is a roll-forward of CL 477395 which was rolled back in CL 477736.
The earlier CL failed because we didn't account for the fact that
on some targets PIE is the default. That is now fixed.

Change-Id: I3e93faa9506033d27040cc9920836f010e05cd26
Reviewed-on: https://go-review.googlesource.com/c/go/+/477919
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-21 02:19:56 +00:00
Ian Lance Taylor
bf1814bc9e cmd/go: rewrite externalLinkingForced slightly for clarity
Change-Id: I8f8d38c48d4ffe70d15330ea0d4794f264c88f25
Reviewed-on: https://go-review.googlesource.com/c/go/+/477918
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-03-21 02:19:13 +00:00
Ian Lance Taylor
9279a9af8b cmd/go: use DefaultPIE to see if external linking is forced
Before this CL, the code checked whether external linking was
required for -buildmode=pie. This CL changes it to also consider
whether external linking is required if PIE is the default build mode.

Change-Id: I5ac62fc027622576a152a8b7b5d97bc1d112adb4
Reviewed-on: https://go-review.googlesource.com/c/go/+/477917
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-20 23:33:31 +00:00
Ian Lance Taylor
c7ea9969f8 internal/platform: pass race mode to DefaultPIE
On Windows we default to PIE, except in race mode.
Pass isRace to platform.DefaultPIE to centralize that decision.
This is in preparation for adding another call to DefaultPIE.

Change-Id: I91b75d307e7d4d260246a934f98734ddcbca372a
Reviewed-on: https://go-review.googlesource.com/c/go/+/477916
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2023-03-20 23:32:34 +00:00
Damien Neil
b98c1b22bd all: gofmt
Change-Id: I926388ee5aeeff11f765cbd4558b66645d1bbc08
Reviewed-on: https://go-review.googlesource.com/c/go/+/477836
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-20 22:54:22 +00:00
Ian Lance Taylor
c7f5b3595b cmd/go: import runtime/cgo when externally linking
Restore CL 477195, which was reverted in CL 477795.
This version includes CL 477397, which fixes the test problems
with CL 477195. CL 477397 was not submitted because it had an
unrelated failure on darwin-amd64. That failure is fixed by CL 477736.

Fixes #31544

Change-Id: I3a2258cd0ca295cede3511ab212e56fd0114f94a
Reviewed-on: https://go-review.googlesource.com/c/go/+/477839
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-20 22:03:35 +00:00
Ian Lance Taylor
86ad2d570c Revert "cmd/go: use platform.MustLinkExternal in externalLinkingForced"
This reverts CL 477395.

Failing on darwin-amd64 builders:
https://build.golang.org/log/b07ec5e40a896f5d099e4c85f4094321ecc84f21

loadinternal: cannot find runtime/cgo
signal: trace/BPT trap
FAIL	crypto/x509	0.024s
FAIL
2023/03/20 12:16:35 Failed: exit status 1

Change-Id: Ib9923f9ff7e24c3b5f8690ba1d6b5d0b6693d49c
Reviewed-on: https://go-review.googlesource.com/c/go/+/477736
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2023-03-20 20:11:40 +00:00
qmuntal
6e57ecdb03 cmd/link/internal/ld: emit better complex types for COFF symbols
The Go linker has always used IMAGE_SYM_TYPE_NULL as COFF symbol
type [1] when external linking and array of structs
(IMAGE_SYM_DTYPE_ARRAY<<4+IMAGE_SYM_TYPE_STRUCT) when internal linking.
This behavior seems idiosyncratic, and looking at the git history it
seems that it has probably been cargo culted from earlier toolchains.

This CL updates the Go linker to use IMAGE_SYM_DTYPE_FUNCTION<<4 for
those symbols representing functions, and IMAGE_SYM_TYPE_NULL otherwise.

This new behavior better represents the symbol types, and can help
other tools interpreting the intent of each symbol, e.g. debuggers or
tools extracting debug info from Go binaries. It also mimics what other
toolchains do, i.e. MSVC, LLVM, and GCC.

[1] https://learn.microsoft.com/en-us/windows/win32/debug/pe-format#type-representation

Change-Id: I6b39b2048e95f0324b2eb90c85802ce42db455d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/475856
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
2023-03-20 17:59:01 +00:00
Yi Yang
da4687923b cmd/compile: add rewrite rules for arithmetic operations
Add the following common local transformations

(t + x) - (t + y) == x - y
(t + x) - (y + t) == x - y
(x + t) - (y + t) == x - y
(x + t) - (t + y) == x - y
(x - t) + (t + y) == x + y
(x - t) + (y + t) == x + y

The compiler itself matches such patterns many times. This also aligns with other popular compilers.

Fixes #59111

Change-Id: Ibdfdb414782f8fcaa20b84ac5d43d0d9ae2c7b60
GitHub-Last-Rev: 1aad82e62e
GitHub-Pull-Request: golang/go#59119
Reviewed-on: https://go-review.googlesource.com/c/go/+/477555
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
2023-03-20 15:42:09 +00:00
Bryan Mills
b414ba4c99 Revert "cmd/go: import runtime/cgo when externally linking"
This reverts CL 477195.

Reason for revert: test fails on darwin and solaris builders.

Change-Id: I68085f06bc84b0b8649804b8968626ed0e788931
Reviewed-on: https://go-review.googlesource.com/c/go/+/477795
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Bypass: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-20 15:39:11 +00:00
Joel Sing
20e9b7f1b5 debug/dwarf: return ErrUnknownPC rather than nil on unknown PC
Currently, on e == nil or e.Tag == 0, SeekPC returns with a nil error.
Instead, indicate that the PC is unknown.

Change-Id: I9594296034e2df872e399bd800b00cb565c413c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/473695
Reviewed-by: Carlos Amedee <carlos@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
2023-03-18 06:31:16 +00:00
Joel Sing
6827f0d772 runtime: provide and use a GO_PPC64X_HAS_FUNCDESC define
Rather than implying that all ppc64 GOARCHs use function descriptors,
provide a define for platforms that make use of function descriptors.
Condition on GO_PPC64X_HAS_FUNCDESC when choosing whether or not
to load the entry address from the first slot of the function
descriptor.

Updates #56001.

Change-Id: I9cdc788f2de70a1262c17d8485b555383d1374b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/476117
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-18 06:28:23 +00:00
Joel Sing
ada6ffca83 internal/cpu: add default osinit for ppc64/ppc64le
This will be used for operating systems other than AIX and Linux (both of
which provide a more specific version).

Updates #56001

Change-Id: Ia1de994866b66f03c83696faa92d0531a0b75273
Reviewed-on: https://go-review.googlesource.com/c/go/+/473698
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-18 06:24:06 +00:00
Joel Sing
2c23b0fdcb cmd/dist: add openbsd/ppc64 as a known GOOS/GOARCH
Also map uname output containing powerpc64 to ppc64 on openbsd.

Updates #56001

Change-Id: I6a4470cb0e5d6c6940d5268a6a06d23430c7859a
Reviewed-on: https://go-review.googlesource.com/c/go/+/475635
Reviewed-by: Eric Grosse <grosse@gmail.com>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-18 05:49:27 +00:00
David Bendory
f53a95fe39 errors: clarify Join documentation
The previous documentation used a double-negative in describing Join behavior; this use of language could be confusing.

This update removes the double-negative.

Change-Id: If13e88682e865314a556e7d381143a97fa5486d9
GitHub-Last-Rev: 92b3f88a5d
GitHub-Pull-Request: golang/go#59082
Reviewed-on: https://go-review.googlesource.com/c/go/+/477095
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2023-03-17 21:12:15 +00:00
Michael Matloob
50479b79bc cmd/go: make sure linker -o for plugin doesn't include tempdir path
There is already a case that when buildmode=shared passes only the
basename of the -o argument to the link command to the linker (and
runs in the directory of that argument) to avoid having that
(temporary) directory of the file be included in the LC_ID_DYLIB load
command. Extend the case to buildmode=plugin, because the same thing
can happen there.

This can only happen on darwin: the -o command can be embedded into
Mach-O and PE binaries, but plugin isn't supported on Windows.

For #58557

Change-Id: I7a4a5627148e77c6906ac4583af3d9f053d5b249
Reviewed-on: https://go-review.googlesource.com/c/go/+/477296
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2023-03-17 20:16:14 +00:00
Ian Lance Taylor
553506d39a cmd/go: use platform.MustLinkExternal in externalLinkingForced
Change-Id: If5613ae73d03c196f26340fd6293e37c78c29bd1
Reviewed-on: https://go-review.googlesource.com/c/go/+/477395
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2023-03-17 19:59:10 +00:00
Ian Lance Taylor
c0aacdcf8a cmd/go: import runtime/cgo when externally linking
Fixes #31544

Change-Id: Ic99875ad227876eb741e93653589310327c9c0ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/477195
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2023-03-17 19:55:13 +00:00
Michael Pratt
2c6aaaea64 cmd/compile/internal/ssa: drop overwritten regalloc basic block input requirements
For the following description, consider the following basic block graph:

      b1 ───┐┌──── b2
            ││
            ││
            ▼▼
            b3

For register allocator transitions between basic blocks, there are two
key passes (significant paraphrasing):

First, each basic block is visited in some predetermined visit order.
This is the core visitOrder range loop in regAllocState.regalloc. The
specific ordering heuristics aren't important here, except that the
order guarantees that when visiting a basic block at least one of its
predecessors has already been visited.

Upon visiting a basic block, that block sets its expected starting
register state (regAllocState.startRegs) based on the ending register
state (regAlloc.State.endRegs) of one of its predecessors. (How it
chooses which predecessor to use is not important here.)

From that starting state, registers are assigned for all values in the
block, ultimately resulting in some ending register state.

After all blocks have been visited, the shuffle pass
(regAllocState.shuffle) ensures that for each edge, endRegs of the
predecessor == startRegs of the successor. That is, it makes sure that
the startRegs assumptions actually hold true for each edge. It does this
by adding moves to the end of the predecessor block to place values in
the expected register for the successor block. These may be moves from
other registers, or from memory if the value is spilled.

Now on to the actual problem:

Assume that b1 places some value v1 into register R10, and thus ends
with endRegs containing R10 = v1.

When b3 is visited, it selects b1 as its model predecessor and sets
startRegs with R10 = v1.

b2 does not have v1 in R10, so later in the shuffle pass, we will add a
move of v1 into R10 to the end of b2 to ensure it is available for b3.

This is all perfectly fine and exactly how things should work.

Now suppose that b3 does not use v1. It does need to use some other
value v2, which is not currently in a register. When assigning v2 to a
register, it finds all registers are already in use and it needs to dump
a value. Ultimately, it decides to dump v1 from R10 and replace it with
v2.

This is fine, but it has downstream effects on shuffle in b2. b3's
startRegs still state that R10 = v1, so b2 will add a move to R10 even
though b3 will unconditionally overwrite it. i.e., the move at the end
of b2 is completely useless and can result in code like:

// end of b2
MOV n(SP), R10 // R10 = v1 <-- useless
// start of b3
MOV m(SP), R10 // R10 = v2

This is precisely what happened in #58298.

This CL addresses this problem by dropping registers from startRegs if
they are never used in the basic block prior to getting dumped. This
allows the shuffle pass to avoid placing those useless values into the
register.

There is a significant limitation to this CL, which is that it only
impacts the immediate predecessors of an overwriting block. We can
discuss this by zooming out a bit on the previous graph:

b4 ───┐┌──── b5
      ││
      ││
      ▼▼
      b1 ───┐┌──── b2
            ││
            ││
            ▼▼
            b3

Here we have the same graph, except we can see the two predecessors of
b1.

Now suppose that rather than b1 assigning R10 = v1 as above, the
assignment is done in b4. b1 has startRegs R10 = v1, doesn't use the
value at all, and simply passes it through to endRegs R10 = v1.

Now the shuffle pass will require both b2 and b5 to add a move to
assigned R10 = v1, because that is specified in their successor
startRegs.

With this CL, b3 drops R10 = v1 from startRegs, but there is no
backwards propagation, so b1 still has R10 = v1 in startRegs, and b5
still needs to add a useless move.

Extending this CL with such propagation may significantly increase the
number of useless moves we can remove, though it will add complexity to
maintenance and could potentially impact build performance depending on
how efficiently we could implement the propagation (something I haven't
considered carefully).

As-is, this optimization does not impact much code. In bent .text size
geomean is -0.02%. In the container/heap test binary, 18 of ~2500
functions are impacted by this CL. Bent and sweet do not show a
noticeable performance impact one way or another, however #58298 does
show a case where this can have impact if the useless instructions end
up in the hot path of a tight loop.

For #58298.

Change-Id: I2fcef37c955159d068fa0725f995a1848add8a5f
Reviewed-on: https://go-review.googlesource.com/c/go/+/471158
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
2023-03-17 19:01:54 +00:00
Bryan C. Mills
729c05d065 net/http: eliminate more arbitrary timeouts in tests
Change-Id: I5b3158ecd0eb20dc433a53a2b03eb4551cbb3f7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/477196
Auto-Submit: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2023-03-17 17:21:50 +00:00
Shang Ding
2449bbb5e6 net/http/httputil: use response controller in reverse proxy
Previously, the reverse proxy is unable to detect
the support for hijack or flush if those things
are residing in the response writer in a wrapped
manner.

The reverse proxy now makes use of the new http
response controller as the means to discover
the underlying flusher and hijacker associated
with the response writer, allowing wrapped flusher
and hijacker become discoverable.

Change-Id: I53acbb12315c3897be068e8c00598ef42fc74649
Reviewed-on: https://go-review.googlesource.com/c/go/+/468755
Run-TryBot: Damien Neil <dneil@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2023-03-17 15:23:38 +00:00
Joel Sing
602e6aa979 runtime: remove arm64 non-register ABI fallback code
This presumably got missed in CL 393875.

Change-Id: I4f2de00ebd6ec405d5e289a7f8c2fc781607260b
Reviewed-on: https://go-review.googlesource.com/c/go/+/475617
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2023-03-17 09:07:40 +00:00
Guoqi Chen
c8402cd330 runtime: remove the fake mstart caller in systemstack on linux/loong64
The backtrace knows to stop in the system stack due to writing to the SP,
so here the fake mstart caller in the system stack is no longer needed and
can be removed

ref. CL 288799

Change-Id: I0841e75fd515cf6a0d98abe4cffc3f63fc275e0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/416035
Auto-Submit: Wayne Zuo <wdvxdr@golangcn.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: WANG Xuerui <git@xen0n.name>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Wayne Zuo <wdvxdr@golangcn.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-17 06:57:16 +00:00
Keith Randall
3360be4a11 cmd/compile: fix extraneous diff in generated files
Looks like CL 475735 contained a not-quite-up-to-date version
of the generated file. Maybe ABSFL was in an earlier version of the CL
and was removed before checkin without regenerating the generated file?

In any case, update the generated file. Shouldn't cause a problem, as
that field isn't used in x86/ssa.go.

Change-Id: I3f0b7d41081ba3ce2cdcae385fea16b37d7de81b
Reviewed-on: https://go-review.googlesource.com/c/go/+/477096
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Wayne Zuo <wdvxdr@golangcn.org>
Reviewed-by: Keith Randall <khr@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2023-03-17 04:44:40 +00:00
ezzno
231806c83d cmd/compile: reorder BlankNode assignment to make SetType more clear
Change-Id: I9e6bf9ed100de2039961a6f6558daaa09c176861
GitHub-Last-Rev: 594331fa10
GitHub-Pull-Request: golang/go#59072
Reviewed-on: https://go-review.googlesource.com/c/go/+/476895
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
2023-03-17 02:25:08 +00:00
Tobias Klauser
f4315391d7 cmd/go/internal/lockedfile/internal/filelock: use errors.ErrUnsupported
All platform specific errors are now covered by errors.ErrUnsupported.

Updates #41198

Change-Id: Ia9c0cad7c493305835bd5a1f349446cec409f686
Reviewed-on: https://go-review.googlesource.com/c/go/+/476917
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
2023-03-17 02:24:35 +00:00