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47545 commits

Author SHA1 Message Date
Cherry Zhang 263e13d1f7 test: make codegen tests work with both ABIs
Some codegen tests were written with the assumption that
arguments and results are in memory, and with a specific stack
layout. With the register ABI, the assumption is no longer true.
Adjust the tests to work with both cases.

- For tests expecting in memory arguments/results, change to use
  global variables or memory-assigned argument/results.

- Allow more registers. E.g. some tests expecting register names
  contain only letters (e.g. AX), but  it can also contain numbers
  (e.g. R10).

- Some instruction selection changes when operate on register vs.
  memory, e.g. ADDQ vs. LEAQ, MOVB vs. MOVL. Accept both.

TODO: mathbits.go and memops.go still need fix.
Change-Id: Ic5932b4b5dd3f5d30ed078d296476b641420c4c5
Reviewed-on: https://go-review.googlesource.com/c/go/+/309335
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2021-04-12 21:59:59 +00:00
Manlio Perillo 3d5e3a15f6 debug/pe: replace os.MkdirTemp with T.TempDir
Updates #45402

Change-Id: I3d83a66270ca38e82d6bb7f8a1367af3d5343a98
Reviewed-on: https://go-review.googlesource.com/c/go/+/309352
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-04-12 21:59:20 +00:00
Manlio Perillo c27991bf5b text/template: replace os.MkdirTemp with T.TempDir
Updates #45402

Change-Id: I9d55191c4021387b771550b5c93c91806f694aa6
Reviewed-on: https://go-review.googlesource.com/c/go/+/309351
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-04-12 21:58:25 +00:00
Manlio Perillo cccd3ba912 internal/execabs: replace ioutil.WriteFile with os.WriteFile
Fixes #45532.

Change-Id: I844acd50d6fa1ce918969bbb52f79dd7412d289f
Reviewed-on: https://go-review.googlesource.com/c/go/+/309350
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-04-12 21:57:23 +00:00
Michael Pratt aad13cbb74 runtime: non-strict InlTreeIndex lookup in expandFinalInlineFrame
This is a follow-up to golang.org/cl/301369, which made the same change
in Frames.Next. The same logic applies here: a profile stack may have
been truncated at an invalid PC provided by cgoTraceback.
expandFinalInlineFrame will then try to lookup the inline tree and
crash.

The same fix applies as well: upon encountering a bad PC, simply leave
it as-is and move on.

Fixes #44971
Fixes #45480

Change-Id: I2823c67a1f3425466b05384cc6d30f5fc8ee6ddc
Reviewed-on: https://go-review.googlesource.com/c/go/+/309109
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Trust: Michael Pratt <mpratt@google.com>
2021-04-12 21:29:02 +00:00
Josh Rickmar 5c9b6e8e63 net: never probe IPv4 map support on DragonFly BSD, OpenBSD
DragonFly BSD and OpenBSD do not implement mapping IPv4 addresses to
the IPv6 address space, and a runtime check can be avoided.

As the IP stack capabilities probe was only being called from
supportsIPv4map to check for this support, the OS-specific handling
can be added to this function rather than continuing to run the probe.

Change-Id: I5800c197b1be502a6efa79e3edd6356bde8637fb
GitHub-Last-Rev: 7eb67189cd
GitHub-Pull-Request: golang/go#45243
Reviewed-on: https://go-review.googlesource.com/c/go/+/304870
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-04-12 21:26:59 +00:00
Jacalz 3e8ba91275 mime: support reading shared mime-info database on unix systems
This adds support for reading the FreeDesktop Shared MIME-info Database on Unix systems, if it exists.
It should make lookups work on systems where the mime.types files are not present and
should lead to better mimetype lookup in general. If the shared mimetype database does not exist,
we will fall back to reading mime.types files in common locations.

Related to a bug on Solus bugtracker: https://dev.getsol.us/T9394
This change makes the mime package work on Solus.

Change-Id: If330c22ffe523bf31f7f10807a54fc8858517055
GitHub-Last-Rev: d5fbe8c41a
GitHub-Pull-Request: golang/go#45271
Reviewed-on: https://go-review.googlesource.com/c/go/+/305230
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Tobias Klauser <tobias.klauser@gmail.com>
2021-04-12 21:04:48 +00:00
Austin Clements 1b736b3c19 runtime: consolidate "is sweep done" conditions
The runtime currently has two different notions of sweep completion:

1. All spans are either swept or have begun sweeping.

2. The sweeper has *finished* sweeping all spans.

Having both is confusing (it doesn't help that the documentation is
often unclear or wrong). Condition 2 is stronger and the theoretical
slight optimization that condition 1 could impact is never actually
useful. Hence, this CL consolidates both conditions down to condition 2.

Updates #45315.

Change-Id: I55c84d767d74eb31a004a5619eaba2e351162332
Reviewed-on: https://go-review.googlesource.com/c/go/+/307916
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-12 19:22:52 +00:00
Austin Clements a25a77aed2 runtime: block sweep completion on all sweep paths
The runtime currently has two different notions of sweep completion:

1. All spans are either swept or have begun sweeping.

2. The sweeper has *finished* sweeping all spans.

Most things depend on condition 1. Notably, GC correctness depends on
condition 1, but since all sweep operations a non-preemptible, the STW
at the beginning of GC forces condition 1 to become condition 2.

runtime.GC(), however, depends on condition 2, since the intent is to
complete a complete GC cycle, and also update the heap profile (which
can only be done after sweeping is complete).

However, the way we compute condition 2 is racy right now and may in
fact only indicate condition 1. Specifically, sweepone blocks
condition 2 until all sweepone calls are done, but there are many
other ways to enter the sweeper that don't block this. Hence, sweepone
may see that there are no more spans in the sweep list and see that
it's the last sweepone and declare sweeping done, while there's some
other sweeper still working on a span.

Fix this by making sure every entry to the sweeper participates in the
protocol that blocks condition 2. To make sure we get this right, this
CL introduces a type to track sweep blocking and (lightly) enforces
span sweep ownership via the type system. This has the nice
side-effect of abstracting the pattern of acquiring sweep ownership
that's currently repeated in many different places.

Fixes #45315.

Change-Id: I7fab30170c5ae14c8b2f10998628735b8be6d901
Reviewed-on: https://go-review.googlesource.com/c/go/+/307915
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-12 19:22:50 +00:00
Lynn Boger 07b2fee460 cmd/link: fix TestLargeText
This test is not run in short mode so it was getting
failures that didn't happen with default testing. See
the issue for details on the failures.

Fixes #45406

Change-Id: I51d97cc4c910fe3ba2bc0a12742023a57d101f44
Reviewed-on: https://go-review.googlesource.com/c/go/+/308935
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Paul Murphy <murp@ibm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
2021-04-12 18:32:27 +00:00
Austin Clements 849dba07a5 runtime: port performance-critical functions to regabi
This CL ports a few performance-critical runtime assembly functions to
use register arguments directly. While using the faster ABI is nice,
the real win here is that we avoid ABI wrappers: since these are
"builtin" functions in the compiler, it can generate calls to them
without knowing that their native implementation is ABI0. Hence, it
generates ABIInternal calls that go through ABI wrappers. By porting
them to use ABIInternal natively, we avoid the overhead of the ABI
wrapper.

This significantly improves performance on several benchmarks,
comparing regabiwrappers before and after this change:

name                                old time/op  new time/op  delta
BiogoIgor                            15.7s ± 2%   15.7s ± 2%    ~     (p=0.617 n=25+25)
BiogoKrishna                         18.5s ± 5%   17.7s ± 2%  -4.61%  (p=0.000 n=25+25)
BleveIndexBatch100                   5.91s ± 3%   5.82s ± 3%  -1.60%  (p=0.000 n=25+25)
BleveQuery                           6.76s ± 0%   6.60s ± 1%  -2.31%  (p=0.000 n=22+25)
CompileTemplate                      248ms ± 5%   245ms ± 1%    ~     (p=0.643 n=25+20)
CompileUnicode                      94.4ms ± 3%  93.9ms ± 2%    ~     (p=0.152 n=24+23)
CompileGoTypes                       1.60s ± 2%   1.59s ± 2%    ~     (p=0.059 n=24+24)
CompileCompiler                      104ms ± 3%   103ms ± 1%    ~     (p=0.056 n=25+22)
CompileSSA                           10.9s ± 1%   10.9s ± 1%    ~     (p=0.052 n=25+25)
CompileFlate                         156ms ± 8%   152ms ± 1%  -2.49%  (p=0.008 n=25+21)
CompileGoParser                      248ms ± 1%   249ms ± 2%    ~     (p=0.058 n=21+20)
CompileReflect                       595ms ± 3%   601ms ± 4%    ~     (p=0.182 n=25+25)
CompileTar                           211ms ± 2%   211ms ± 1%    ~     (p=0.663 n=23+23)
CompileXML                           282ms ± 2%   284ms ± 5%    ~     (p=0.456 n=21+23)
CompileStdCmd                        13.6s ± 2%   13.5s ± 2%    ~     (p=0.112 n=25+24)
FoglemanFauxGLRenderRotateBoat       8.69s ± 2%   8.67s ± 0%    ~     (p=0.094 n=22+25)
FoglemanPathTraceRenderGopherIter1   20.2s ± 2%   20.7s ± 3%  +2.53%  (p=0.000 n=24+24)
GopherLuaKNucleotide                 31.4s ± 1%   31.0s ± 1%  -1.28%  (p=0.000 n=25+24)
MarkdownRenderXHTML                  246ms ± 1%   244ms ± 1%  -0.79%  (p=0.000 n=20+21)
Tile38WithinCircle100kmRequest       843µs ± 4%   818µs ± 4%  -2.93%  (p=0.000 n=25+25)
Tile38IntersectsCircle100kmRequest  1.06ms ± 5%  1.05ms ± 3%  -1.19%  (p=0.021 n=24+25)
Tile38KNearestLimit100Request       1.01ms ± 1%  1.01ms ± 2%    ~     (p=0.335 n=22+25)
[Geo mean]                           596ms        592ms       -0.71%

(https://perf.golang.org/search?q=upload:20210411.5)

It also significantly reduces the performance penalty of enabling
regabiwrappers, though it doesn't yet fully close the gap on all
benchmarks:

name                                old time/op  new time/op  delta
BiogoIgor                            15.7s ± 1%   15.7s ± 2%    ~     (p=0.366 n=24+25)
BiogoKrishna                         17.7s ± 2%   17.7s ± 2%    ~     (p=0.315 n=23+25)
BleveIndexBatch100                   5.86s ± 4%   5.82s ± 3%    ~     (p=0.137 n=24+25)
BleveQuery                           6.55s ± 0%   6.60s ± 1%  +0.83%  (p=0.000 n=24+25)
CompileTemplate                      244ms ± 1%   245ms ± 1%    ~     (p=0.208 n=21+20)
CompileUnicode                      94.0ms ± 4%  93.9ms ± 2%    ~     (p=0.666 n=24+23)
CompileGoTypes                       1.60s ± 2%   1.59s ± 2%    ~     (p=0.154 n=25+24)
CompileCompiler                      103ms ± 1%   103ms ± 1%    ~     (p=0.905 n=24+22)
CompileSSA                           10.9s ± 2%   10.9s ± 1%    ~     (p=0.803 n=25+25)
CompileFlate                         153ms ± 1%   152ms ± 1%    ~     (p=0.182 n=23+21)
CompileGoParser                      250ms ± 2%   249ms ± 2%    ~     (p=0.843 n=24+20)
CompileReflect                       595ms ± 4%   601ms ± 4%    ~     (p=0.141 n=25+25)
CompileTar                           212ms ± 3%   211ms ± 1%    ~     (p=0.499 n=23+23)
CompileXML                           282ms ± 1%   284ms ± 5%    ~     (p=0.129 n=20+23)
CompileStdCmd                        13.5s ± 2%   13.5s ± 2%    ~     (p=0.480 n=24+24)
FoglemanFauxGLRenderRotateBoat       8.66s ± 1%   8.67s ± 0%    ~     (p=0.325 n=25+25)
FoglemanPathTraceRenderGopherIter1   20.6s ± 3%   20.7s ± 3%    ~     (p=0.137 n=25+24)
GopherLuaKNucleotide                 30.5s ± 2%   31.0s ± 1%  +1.68%  (p=0.000 n=23+24)
MarkdownRenderXHTML                  243ms ± 1%   244ms ± 1%  +0.51%  (p=0.000 n=23+21)
Tile38WithinCircle100kmRequest       801µs ± 2%   818µs ± 4%  +2.11%  (p=0.000 n=25+25)
Tile38IntersectsCircle100kmRequest  1.01ms ± 2%  1.05ms ± 3%  +4.34%  (p=0.000 n=24+25)
Tile38KNearestLimit100Request       1.00ms ± 1%  1.01ms ± 2%  +0.81%  (p=0.008 n=21+25)
[Geo mean]                           589ms        592ms       +0.50%

(https://perf.golang.org/search?q=upload:20210411.6)

Change-Id: I8f77f010b0abc658064df569a27a9c7a7b1c7bf9
Reviewed-on: https://go-review.googlesource.com/c/go/+/308931
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-12 18:08:47 +00:00
Cherry Zhang 865d2bc78e cmd/compile: do not allocate space for unspilled in-register results
For function results, if in register, we allocate spill slots
within the frame like locals. Currently, even if we never spill
to it the slot is still allocated. This CL makes it not allocate
the slot if it is never used.

Change-Id: Idbd4e3096cfac6d2bdfb501d8efde48ee2191d7b
Reviewed-on: https://go-review.googlesource.com/c/go/+/309150
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-12 17:56:06 +00:00
Ian Lance Taylor 8b859be9c3 internal/poll: ensure that newPoolPipe doesn't return a nil pointer
The function could occasionally return a nil pointer as a non-nil
interface, confusing the calling code.

Fixes #45520

Change-Id: Ifd35613728efa2cee9903177e85d369155074804
Reviewed-on: https://go-review.googlesource.com/c/go/+/309429
Trust: Ian Lance Taylor <iant@golang.org>
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Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Andy Pan <panjf2000@gmail.com>
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2021-04-12 17:32:47 +00:00
Cherry Zhang 2fa7163b06 cmd/compile: look for newobject in register ABI for write barrier elision
If we are assigning a global address to an object that is
immediately returned from runtime.newobject, we omit the write
barrier because we know that both the source (static address) and
the destination (zeroed memory) do not need to be tracked by the
GC. Currently, the code that matches runtime.newobject's result
is specific to ABI0 layout. Update the code to work with register
ABI as well.

Change-Id: I7ab0833c6f745329271881ee4169956928a3a948
Reviewed-on: https://go-review.googlesource.com/c/go/+/308709
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: David Chase <drchase@google.com>
2021-04-12 17:30:21 +00:00
Paschalis Tsilias 5d80f8a82b runtime: replace outdated documentation link in Windows' nanotime
Fixes #45498

Change-Id: I89365f3517bc84376f0f580c64a57f38aaba0cbb
Reviewed-on: https://go-review.googlesource.com/c/go/+/308997
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Alex Brainman <alex.brainman@gmail.com>
2021-04-12 17:28:43 +00:00
Cherry Zhang 33d99905da cmd/compile: preserve name association when eliding copies in expand_calls
If v is a Copy of x, we will rewrite v to x. If v has a name
associated to it, let the name associate to x.

Under register ABI, this helps associate in-register Arg values
to the parameters' names. (But does not address all cases.)

Change-Id: I47c779e56c9d0823a88890497e32326bc0290f82
Reviewed-on: https://go-review.googlesource.com/c/go/+/309330
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-12 17:08:49 +00:00
Cherry Zhang 70ed28e5f7 cmd/compile: support memmove inlining with register args
The rule that inlines memmove expects SSA ops that calls memmove
with arguments in memory. This CL adds a version that matches
it with arguments in registers, so the optimization works for
both situations.

Change-Id: Ideb64f65b7521481ab2ca7c9975a6cf7b70d5966
Reviewed-on: https://go-review.googlesource.com/c/go/+/309332
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
2021-04-12 16:44:49 +00:00
Cherry Zhang 585b52261c runtime: remove deferreturn dummy argument
deferreturn has a dummy argument, that is only used for getting
the caller's SP. When generating deferreturn calls, the compiler
does not pass an actual argument or reserve its stack space.
Also, the current code is written with the assumption about where
the argument's address is on the stack. Currently this is correct
for both ABI0 and the register ABI, but it may change in the
future (e.g. if we remove dedicated spill slots). Remove the
argument.

Also remove the argument for getargp.

Change-Id: I96d07efa79a9c1a53ef3fc5adbecc11877e99dc1
Reviewed-on: https://go-review.googlesource.com/c/go/+/309329
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-12 16:30:17 +00:00
Cherry Zhang 9ed0e32059 test: consider default GOEXPERIMENT when matching build tags
If GOEXPERIMENT environment variable is unset, use the default
value that is baked into the toolchain (instead of no
experiments).

Change-Id: I41f863e6f7439f2d53e3ebd25a7d9cf4a176e32e
Reviewed-on: https://go-review.googlesource.com/c/go/+/309333
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-12 16:25:59 +00:00
Julie Qiu 51a47b7ff2 cmd/go: display helpful error when module cache can't be created
Previously when the module cache specified by GOMODCACHE could not be
created an unhelpful message would be printed multiple times.

This happened because we were fetching several things in parallel then
failing to write them because we can't create the module cache.

We now check if the module cache can be created before fetching.

If not, the following message is printed:

go: could not create module cache

Fixes #45113

Change-Id: Ic9cec787411335edc7f4d0614fde7eaa8a957fb5
Reviewed-on: https://go-review.googlesource.com/c/go/+/304571
Trust: Julie Qiu <julie@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
2021-04-12 15:51:43 +00:00
Hajime Hoshi 117b1c84d3 cmd/go/internal/work: remove '_test' from import paths in stacktraces when -trimpath is specified
ExampleFrames with -trimpath failed since the content of Frame's File
changed when -trimpath is specified.

This CL fixes the issue by adding a new field OrigImportPath to
PackageInternal, which represents the original import path before adding
'_test' suffix for an external test package, and always using it to
create paths for the build tools.

Fixes golang/go#43380

Change-Id: Ibbc947eb3ae08a7ba81f13f03af67c8745b5c69f
Reviewed-on: https://go-review.googlesource.com/c/go/+/279440
Run-TryBot: Hajime Hoshi <hajimehoshi@gmail.com>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2021-04-12 15:17:33 +00:00
Than McIntosh c26f954a54 cmd/compile/internal/amd64: follow-on regabi fix for amd64 zerorange
This patch provides a better long-term fix for the compiler's
zerorange() helper function to make it generate code friendly to the
register ABI.

CL 305829 did part of the work, but didn't properly handle the case
where the compiler emits a REP.STOSQ sequence; this patch changes the
REP code to make sure it doesn't clobber any incoming register
parameter values.

Also included is a test that is specifically written to trigger
the REP emit code in the compiler (prior to this, this code was
not being hit on linux/amd64 all.bash).

Updates #45372.
Updates #40724.

Change-Id: Iaf1c4e709e98eda45cd6f3aeebda0fe9160f1f42
Reviewed-on: https://go-review.googlesource.com/c/go/+/307829
Trust: Than McIntosh <thanm@google.com>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-12 10:30:24 +00:00
Tobias Klauser 16cd770e06 cmd/cgo: throw if C.malloc returns NULL in C.CString or C.CBytes
Change-Id: Iea07b7f3e64f5938cfb1cd1c07bdce4adf8e4470
Reviewed-on: https://go-review.googlesource.com/c/go/+/308992
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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2021-04-12 05:12:42 +00:00
Tobias Klauser 954bd8203b cmd/cgo: use tabs to indent _cgoPREFIX_Cfunc__CMalloc function body
All other _cgoPREFIX_Cfunc_* functions are indented using tabs.

Change-Id: Ic5cfccd3000d34d0bbe08d035f18640af5e05473
Reviewed-on: https://go-review.googlesource.com/c/go/+/308993
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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2021-04-12 05:12:28 +00:00
Tobias Klauser e12abe4bd6 net: fix (*ipStackCapabilities).probe godoc
Change-Id: I2e5db6e7e9a7b3c84449d16b6bc32afe1d0ffee9
Reviewed-on: https://go-review.googlesource.com/c/go/+/308991
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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2021-04-12 05:11:59 +00:00
Meng Zhuo 7beb988a3b runtime: using wyhash for memhashFallback on 64bit platform
wyhash is a general hash function that:

1. About 8-70% faster that internal maphash
2. Passed Smhasher, BigCrush and PractRand tests

name                  old time/op    new time/op    delta
Hash5                   28.9ns ± 0%    30.0ns ± 0%   +3.77%  (p=0.000 n=9+10)
Hash16                  32.4ns ± 0%    30.2ns ± 0%   -6.74%  (p=0.000 n=10+8)
Hash64                  52.4ns ± 0%    43.4ns ± 0%  -17.20%  (p=0.000 n=9+10)
Hash1024                 415ns ± 0%     258ns ± 2%  -37.89%  (p=0.000 n=10+10)
Hash65536               24.9µs ± 0%    14.6µs ± 0%  -41.22%  (p=0.000 n=9+9)
HashStringSpeed         50.2ns ± 4%    47.8ns ± 4%   -4.88%  (p=0.000 n=10+10)
HashBytesSpeed          90.1ns ± 7%    78.3ns ± 4%  -13.06%  (p=0.000 n=10+10)
HashInt32Speed          33.3ns ± 6%    33.6ns ± 4%     ~     (p=0.071 n=10+10)
HashInt64Speed          32.7ns ± 3%    34.0ns ± 3%   +4.05%  (p=0.000 n=9+10)
HashStringArraySpeed     131ns ± 2%     117ns ± 5%  -10.32%  (p=0.000 n=9+10)
FastrandHashiter        72.2ns ± 1%    75.7ns ±10%   +4.87%  (p=0.019 n=8+10)

name                  old speed      new speed      delta
Hash5                  173MB/s ± 0%   167MB/s ± 0%   -3.63%  (p=0.000 n=9+10)
Hash16                 494MB/s ± 0%   530MB/s ± 0%   +7.23%  (p=0.000 n=10+8)
Hash64                1.22GB/s ± 0%  1.48GB/s ± 0%  +20.77%  (p=0.000 n=9+10)
Hash1024              2.47GB/s ± 0%  3.97GB/s ± 2%  +61.01%  (p=0.000 n=8+10)
Hash65536             2.64GB/s ± 0%  4.48GB/s ± 0%  +70.13%  (p=0.000 n=9+9)

Change-Id: I76af4e2bc1995a18149d11983ea8a149c132865e
Reviewed-on: https://go-review.googlesource.com/c/go/+/279612
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2021-04-12 02:29:32 +00:00
Manlio Perillo 424abc8d3b os/signal: replace os.MkdirTemp with T.TempDir
Updates #45402.

Change-Id: I6fe356b51bc825a907f979d9c44432a4d43d1f6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/308996
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2021-04-12 00:45:40 +00:00
Dan Kortschak 0da9eff503 runtime: simplify syntax for pointer arithmetic in mapaccess functions
This harmonizes the syntax between mapaccess1 and mapaccess2, and
simplifies the code.

Change-Id: I6db25ffdc871018d399f9030259894b3994c5793
Reviewed-on: https://go-review.googlesource.com/c/go/+/308951
Reviewed-by: Keith Randall <khr@golang.org>
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2021-04-11 20:41:32 +00:00
Austin Clements 352d329c44 runtime: move zero-sized frame check from newproc to newproc1
If GOEXPERIMENT=regabidefer is enabled, newproc currently checks that
the call frame for new goroutines is empty. But there's one place in
the runtime (debugCallWrap), where we call newproc1, and it happens to
pass a non-empty frame. The current check didn't catch that. Move the
empty call frame check from newproc to newproc1 to catch this.

Updates #40724.

Change-Id: I9998faf1e07e7b7af88e06a8177127f998c40252
Reviewed-on: https://go-review.googlesource.com/c/go/+/309034
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Reviewed-by: Michael Knyszek <mknyszek@google.com>
2021-04-11 20:07:18 +00:00
6543 189c6946f5 net: reference the correct RFCs and sections for IP.IsPrivate
Properly cite RFC 1918 Section 3 for ipv4,
and RFC 4193 Section 8 for ipv6 comments.

Updates #29146

Change-Id: I8a2df0d7bef50444294bb3301fe09fb09f21ffaf
GitHub-Last-Rev: b0341791c0
GitHub-Pull-Request: golang/go#45500
Reviewed-on: https://go-review.googlesource.com/c/go/+/309249
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
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2021-04-11 15:56:20 +00:00
Robert Griesemer 3f4977bd58 cmd/compile/internal/types2: use combined type and ordinary args for type inference
Fixes #44799.

Change-Id: I51d5b6d6fdfcf47b87bf40b1f7e31c3284c2813f
Reviewed-on: https://go-review.googlesource.com/c/go/+/308372
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2021-04-10 19:02:08 +00:00
Robert Griesemer a6d95b4508 cmd/compile/internal/types2: split out function instantiation from index expr
Also, factor out recording of type/value information after
evaluating an expression into an operand, so that we can
use it when handling instantiation expressions manually.

Change-Id: I6776e6cc243558079d6a203f2fe0a6ae0ecc33de
Reviewed-on: https://go-review.googlesource.com/c/go/+/308371
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2021-04-10 19:02:06 +00:00
Robert Griesemer 36c5f902f9 cmd/compile/internal/types2: factor out index/slice expr handling
First step towards lightening the load of Checker.exprInternal by
factoring out the code for index and slice expressions; incl. moving
a couple of related methods (Checker.index, Checker.indexedElts).

The code for handling index/slice expressions is copied 1:1 but
occurrences of "goto Error" are replaced by "x.mode = invalid"
followed by a "return".

Change-Id: I44048dcc4851dc5e24f5f169c17f536a37a6a676
Reviewed-on: https://go-review.googlesource.com/c/go/+/308370
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2021-04-10 19:02:05 +00:00
Robert Griesemer 4638545d85 cmd/compile/internal/syntax: accept "~" and "|" interface elements
Type lists continue to be accepted as before.

While at it, print missing filenames in error tests
(which uses an ad-hoc position representation).

Change-Id: I933b3acbc9cf1985ad8f70f6b206e3a1dbd64d1e
Reviewed-on: https://go-review.googlesource.com/c/go/+/307371
Trust: Robert Griesemer <gri@golang.org>
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2021-04-10 19:02:03 +00:00
Keith Randall 1129a60f1c cmd/compile: include typecheck information in export/import
Include type information on exported function bodies, so that the
importer does not have to re-typecheck the body. This involves
including type information in the encoded output, as well as
avoiding some of the opcode rewriting and other changes that the
old exporter did assuming there would be a re-typechecking pass.

This CL could be considered a cleanup, but is more important than that
because it is an enabling change for generics. Without this CL, we'd
have to upgrade the current typechecker to understand generics. With
this CL, the current typechecker can mostly go away in favor of the
types2 typechecker.

For now, inlining of functions that contain closures is turned off.
We will hopefully resolve this before freeze.

Object files are only 0.07% bigger.

Change-Id: I85c9da09f66bfdc910dc3e26abb2613a1831634d
Reviewed-on: https://go-review.googlesource.com/c/go/+/301291
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
2021-04-10 14:58:18 +00:00
Manlio Perillo 11f159456b path/filepath: replace os.MkdirTemp with T.TempDir
Add the tempDirCanonical function, for tests that need a temporary
directory that does not contain symlinks.

Updates #45402

Change-Id: I3d08ef32ef911331544acce3d7d013b4c3382960
Reviewed-on: https://go-review.googlesource.com/c/go/+/308011
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2021-04-10 08:13:32 +00:00
Andy Pan 6382ec1aba internal/poll: fix the intermittent build failures with pipe pool
Correlative CL 308089

Fixes #45059

Change-Id: I1ff9fbf64e6620d651f287ba2a28d40f964d78a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/308329
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2021-04-10 03:38:08 +00:00
Naman Gera 52bf14e0e8 all: fix spellings
This follows the spelling choices that the Go project has made for English words.
https://github.com/golang/go/wiki/Spelling

Change-Id: Ie7c586d2cf23020cb492cfff58c0831d2d8d3a78
GitHub-Last-Rev: e16a32cd22
GitHub-Pull-Request: golang/go#45442
Reviewed-on: https://go-review.googlesource.com/c/go/+/308291
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2021-04-10 01:46:41 +00:00
Ian Lance Taylor 554d2c4f06 reflect: panic on New of go:notinheap type
For #42076
Fixes #45451

Change-Id: I69646226d3480d5403205412ddd13c0cfc2c8a53
Reviewed-on: https://go-review.googlesource.com/c/go/+/308970
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2021-04-09 23:54:31 +00:00
Cherry Zhang 5305bdedb0 test: do not run (another) softfloat test with regabiargs
I missed one in CL 308710.

Change-Id: Ia277eaba6982f4944992d1bee1e11775934b789f
Reviewed-on: https://go-review.googlesource.com/c/go/+/309151
Trust: Cherry Zhang <cherryyz@google.com>
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2021-04-09 23:18:47 +00:00
Dan Scales 281d168e2d cmd/compile: don't set Ntype in noder2 anymore
Now that we are no longer calling the old typechecker at all during the
noder2 pass, we don't need to create and set an Ntype node ((which is
just a node representation of the type which we already know) for the
Name and Closure nodes. This should reduce memory usage a bit for -G=3.

Change-Id: I6b1345007ce067a89ee64955a53f25645c303f4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/308909
Trust: Dan Scales <danscales@google.com>
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2021-04-09 22:57:48 +00:00
Austin Clements 756e2b1529 cmd/internal/objabi: make GOEXPERIMENT=none mean "no experiment flags"
CL 307819 made GOEXPERIMENT=none mean "restore baseline experiment
configuration". This is arguably what you want because any deviation
from the baseline configuration is an "experiment". However, cmd/dist
requires this to mean "disable all experiment flags", even if some
flags are enabled in the baseline configuration, because its build
system doesn't know how to deal with any enabled experiment flags.

Hence, make GOEXPERIMENT=none mean "disable all experiment flags"
again.

Change-Id: I1e282177c3f62a55eb9c36566c75672808dae9b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/309010
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-09 19:11:12 +00:00
Bryan C. Mills c3faff7f2d cmd/go/internal/modload: change mvsReqs to store roots instead of a full build list
The mvsReqs implementation has always been a bit ambivalent about
whether the root requirements return the full build list, just the
direct requirements, or some hybrid of the two.

However, a full build list always requires the Target module as the
first entry, and it's easer to remove a redundant leading element from
a slice than to add one. Changing the mvsReqs field to contain
arbitrary roots instead of a full build list eliminates the need to
add redundant elements, at the cost of needing to remove redundant
elements in more places.

For #36460

Change-Id: Idd4c2d6bc7b66f67680037dab1fb9c2d1b40ab93
Reviewed-on: https://go-review.googlesource.com/c/go/+/308811
Trust: Bryan C. Mills <bcmills@google.com>
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Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-09 18:49:05 +00:00
Jay Conrod 814c5ff138 cmd/go: support module deprecation
A module is deprecated if its author adds a comment containing a
paragraph starting with "Deprecated:" to its go.mod file. The comment
must appear immediately before the "module" directive or as a suffix
on the same line. The deprecation message runs from just after
"Deprecated:" to the end of the paragraph. This is implemented in
CL 301089.

'go list -m -u' loads deprecation messages from the latest version of
each module, not considering retractions (i.e., deprecations and
retractions are loaded from the same version). By default, deprecated
modules are printed with a "(deprecated)" suffix. The full deprecation
message is available in the -f and -json output.

'go get' prints deprecation warnings for modules named on the command
line. It also prints warnings for modules needed to build packages
named on the command line if those modules are direct dependencies of
the main module.

For #40357

Change-Id: Id81fb2b24710681b025becd6cd74f746f4378e78
Reviewed-on: https://go-review.googlesource.com/c/go/+/306334
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-09 18:20:48 +00:00
Jay Conrod 952187af12 cmd/go: upgrade and vendor golang.org/x/mod
To pull in CL 301089.

For #40357

Change-Id: I8aa9bc8d7a75f804adc7982adaaa1c926b43d0ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/306333
Trust: Jay Conrod <jayconrod@google.com>
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2021-04-09 18:19:42 +00:00
Austin Clements fcf8a6640b cmd/compile/abi-internal: declare R14 completely fixed
Currently, we allow R14, the current goroutine pointer, to be
clobbered in function bodies as long as the function restores it. This
is unnecessary complexity and could lead to confusing inconsistencies
with other architectures that can't simply restore it from TLS.

Updates #40724.

Change-Id: I4c052f0dd0b31d31afeb0c5aff05c314d7a852f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/309009
Trust: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-09 18:11:15 +00:00
Austin Clements 0ad46889a1 cmd/compile/abi-internal: declare X15 scratch in function bodies
X15 must be zero at function calls and returns, but can be used as
scratch in the middle of a function. This allows things like memmove
and the hashing functions to use X15 temporarily, as long as they set
it back to 0 before returning.

This CL also clarifies the distinction between register meanings on
function call versus function return, since some of them have fixed
meanings at both call and return, while others only have a fixed
meaning at calls.

Updates #40724.

Change-Id: I9dad3abde42cd4d2788e8435cde6d55073dd75a3
Reviewed-on: https://go-review.googlesource.com/c/go/+/308929
Trust: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-09 17:56:50 +00:00
Austin Clements 2698be4905 runtime: use sigpanic0 on all OSes
With the register ABI, it's important to inject sigpanic0 instead of
sigpanic so we can set up function entry registers. This was already
happening on most OSes. This CL gets the remaining ones.

Change-Id: I6bc4d912b6497e03ed54d0a9c1eae8fd099d2cea
Reviewed-on: https://go-review.googlesource.com/c/go/+/308930
Trust: Austin Clements <austin@google.com>
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2021-04-09 17:49:01 +00:00
David Chase d11968012c test/abi: disable test with old-style build tag known to run.go
A quick check of the source to run.go suggests that it does not
look for the new-style build tags.

Updates #45465.

Change-Id: Ib4be040935d71e732f81d52c4a22c2b514195f40
Reviewed-on: https://go-review.googlesource.com/c/go/+/308934
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2021-04-09 17:37:22 +00:00
David Chase 6951da56b0 Revert "cmd/compile: ensure spills of int/float reg args land in abi slots"
This reverts CL 308510.

Reason for revert: It breaks "GOEXPERIMENT=regabi,regabiargs ./make.bash"

Change-Id: I553654690ec73120f8a6258dd80623853c430df0
Reviewed-on: https://go-review.googlesource.com/c/go/+/308932
Trust: David Chase <drchase@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-09 15:01:13 +00:00