This comment got left behind in some refactoring and now refers to
code "below" that is no longer below. Move it to be with the code it's
referring to.
Change-Id: I7f7bf0cf8b22c1f6e05ff12b8be71d18fb3359d5
Reviewed-on: https://go-review.googlesource.com/c/go/+/521177
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Austin Clements <austin@google.com>
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Change-Id: If93b6cfa5a598a5f4101c879a0cd88a194e4a6aa
Reviewed-on: https://go-review.googlesource.com/c/go/+/518116
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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Shave off a few allocations while reading a directory by checking
if the entry name is "." or ".." before allocating a string for it.
Change-Id: I05a87d7572bd4fc191db70aaa9e22a6102f68b4b
Reviewed-on: https://go-review.googlesource.com/c/go/+/520415
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This would have helped with debugging the failures caused by CL 515276.
Change-Id: Id641949d8bcd763de7f93778ad9bd3fdde95dcb2
Reviewed-on: https://go-review.googlesource.com/c/go/+/520062
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This CL refactors common patterns for constructing field and method
selector expressions. Notably, XDotField and XDotMethod are now the
only two functions where a SelecterExpr with OXDOT is constructed.
Change-Id: I4c087225d8b295c4a6a92281ffcbcabafe2dc94d
Reviewed-on: https://go-review.googlesource.com/c/go/+/520979
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This CL changes NewMethodExpr to directly construct the OMETHEXPR
node, instead of running through the generic OXDOT typechecking
machinery.
Change-Id: Ic2af0bab6ff1aef45e8463bccb1f69c50db68f65
Reviewed-on: https://go-review.googlesource.com/c/go/+/520919
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This CL refactors the common pattern for constructing OMETHEXPR nodes,
which is the most common use of ir.TypeNode currently.
Change-Id: I446a21af97ab5a4bc2f04bbd581c1ede8a5ede60
Reviewed-on: https://go-review.googlesource.com/c/go/+/520978
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This CL refactors typecheck.DeclFunc to require the caller to have
already constructed the ir.Func and signature type using ir.NewFunc
and types.NewSignature, and simplifies typecheck.DeclFunc to simply
return the slices of param and results ONAMEs.
typecheck.DeclFunc was the last reason that ir.Field still exists, so
this CL also gets rid of that.
Change-Id: Ib398420bac2fd135a235810b8af1635fa754965c
Reviewed-on: https://go-review.googlesource.com/c/go/+/520977
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No need for an explicit nil check. Slicing the input slice
down to zero capacity also preserves nil.
Change-Id: I1f53cc485373d0e65971cd87b6243650ac72612c
Reviewed-on: https://go-review.googlesource.com/c/go/+/521037
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Change-Id: I407f5d3d3a3e8b3d43ff154f731d885e831971e9
GitHub-Last-Rev: d6a400d1ba
GitHub-Pull-Request: golang/go#62155
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CL 521036 was prepared and tested before the revert CL 521155,
and it so happens that the reflectdata import ended up unused.
Drop it to fix the build.
Change-Id: I230c8fee616fc58cc82f3e5da886bcee2e02a3d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/521175
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Map.String and expvarHandler used the %q flag with fmt.Fprintf
to escape Go strings, which does so according to the Go grammar,
which is not always compatible with JSON strings.
Rather than calling json.Marshal for every string,
which will always allocate, declare a local appendJSONQuote
function that does basic string escaping.
Also, we declare an unexported appendJSON method on every
concrete Var type so that the final JSON output can be
constructed with far fewer allocations.
The resulting logic is both more correct and also much faster.
This does not alter the whitespace style of Map.String or expvarHandler,
but may alter the representation of JSON strings.
Performance:
name old time/op new time/op delta
MapString 5.10µs ± 1% 1.56µs ± 1% -69.33% (p=0.000 n=10+9)
name old alloc/op new alloc/op delta
MapString 1.21kB ± 0% 0.66kB ± 0% -45.12% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
MapString 37.0 ± 0% 7.0 ± 0% -81.08% (p=0.000 n=10+10)
Fixes#59040
Change-Id: I46a2125f43550b91d52019e5edc003d9dd19590f
Reviewed-on: https://go-review.googlesource.com/c/go/+/476336
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For #44221Fixes#62147
Change-Id: Ibcc0d11c8253f51a8f5771791ea4173a38a61950
Reviewed-on: https://go-review.googlesource.com/c/go/+/520917
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I believe this bug is introduced by CL 460543 which optimizes the allocations
by changing the type of `idToType` from map to slice, but didn't update the
access code in `Decoder.typeString` that is safe for map but not for slice.
Fixes#62117
Change-Id: I0f2e4cc2f34c54dada1f83458ba512a6fde6dcbe
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The only remaining use for typecheck.NeedRuntimeType is to make sure
that method expressions with anonymous receiver types (e.g.,
"struct{T}.M") have the promoted-method wrapper generated. But the
unified frontend takes care of arranging for this now.
Change-Id: I89340cb6a81343f35e0de1062610cbb993d3b6bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/521036
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The Encoding.DecodedLen API only returns the maximum length of the
expected decoded output, since it does not know about padding.
Since we have the input, we can do better by computing the
input length without padding, and then perform the DecodedLen
calculation as if there were no padding.
This avoids over-growing the destination slice if possible.
Over-growth is still possible since the input may contain
ignore characters like newlines and carriage returns,
but those a rarely encountered in practice.
Change-Id: I38b8f91de1f4fbd3a7128c491a25098bd385cf74
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Perform the [32]byte to string conversion in an inlinable method.
Thus, if the result does not escape in the context of the caller,
we can entirely avoid a call to runtime.slicebytetostring.
Change-Id: Iae8ec2a532776ed6cf99597f19e3f7f21c694c3a
Reviewed-on: https://go-review.googlesource.com/c/go/+/520602
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As of this CL, all OLITERAL, OLINKSYMOFFSET, ONIL, and OTYPE nodes are
constructed as typed and typechecked.
Change-Id: I39b2ad772a9b0419c701890a505a0949f9ea456e
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This CL reorganizes the top-level functions for handling package-level
declarations, runtime type descriptors, and SSA compilation to work in
a loop. This generalizes the loop that previously existed in dumpdata.
Change-Id: I0e51e60f6ef9e7f96a4a3ccd5801f7baf83eba9a
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Except for a single call site in escape analysis, every use of
ir.AsNode involves a types.Object that's known to contain
an *ir.Name. Asserting directly to that type makes the code simpler
and more efficient.
The one use in escape analysis is extended to handle nil correctly
without it.
Change-Id: I694ae516903e541341d82c2f65a9155e4b0a9809
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The last use of this was removed in go.dev/cl/518757.
Change-Id: I41ddc9601bfa7e553b83c4c5a055104b2044d5d0
Reviewed-on: https://go-review.googlesource.com/c/go/+/520610
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This type used to provide extra type safety around which syntactic
nodes could also represent types, but now the only remaining use is
ir.TypeNode, and it always ends up as an ir.Node anyway. So we might
as well use Node instead.
Change-Id: Ia0842864794365b0e155dc5af154c673ffa2967b
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These were only ever used by the pre-unified generics frontend. I
initially kept them because I thought they'd be useful for the unified
frontend eventually too, but that hasn't manifested.
Change-Id: Iaa31a76ac4d62533ec269d2a7141442b8e344180
Reviewed-on: https://go-review.googlesource.com/c/go/+/520608
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This error checking code is all obsolete by types2.
Change-Id: I247cee2c847236dfbd5a878441ad712481692927
Reviewed-on: https://go-review.googlesource.com/c/go/+/520607
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This CL updates several frontend passes to stop relying on
ir.CurFunc (at least directly).
Change-Id: I3c3529e81e27fb05d54a828f081f7c7efc31af67
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Steps towards eliminating implicit dependencies on base.Pos and
ir.CurFunc. Mechanical CL produced with gofmt -r.
Change-Id: I070015513cb955cbe87f9a148d81db8c0d4b0dc5
Reviewed-on: https://go-review.googlesource.com/c/go/+/520605
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Now that package initialization ordering is handled by types2 instead
of pkginit, we can get rid of this special case.
Change-Id: I4b94df02813b662498ae7d2e829119e3bb932d6e
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An *ir.Func is always ODCLFUNC, so no need to double-check this
anymore. The type system statically ensures we have the right Op.
Also, pkginit.initRequiredForCoverage appears to be unused, so we can
get rid of it completely.
Change-Id: If1abb35672b40f705f23c365ad2a828c2661e9c0
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For #53693
Change-Id: I6a428a4a10a2e2efa03296f539e190f0743c1f46
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Change-Id: I40595a3f598483d029473af465c756f8777ecc91
Reviewed-on: https://go-review.googlesource.com/c/go/+/520915
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The wasip1 TCP echo test introduced in CL 493358 has a race
condition with port selection. The test runner probes for a free
port and then asks the WASM runtime to listen on the port, which
may be taken by another process in the interim.
Due to limitations with WASI preview 1, the guest is unable to
query the port it's listening on. The test cannot ask the WASM
runtime to listen on port 0 (choose a free port) since there's
currently no way for the test to query the selected port and
connect to it.
Given the race condition is unavoidable, this test is now disabled
by default and requires opt-in via an environment variable.
This commit also eliminates the hard-coded connection timeout.
Fixes#61820.
Change-Id: I375145c1a1d03ad45c44f528da3347397e6dcb01
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Currently TestMutexProfile expects contention to reported as somewhere
between 0.9x and 2.0x the expected amount introduced. While bounding
from below is fine (especially since the goroutine holding the mutex
doesn't even start to sleep until the required number of goroutines are
blocked on a mutex), bounding from above can easily lead to flakiness.
Delays and non-determinism can come from anywhere in the system,
and nevertheless clocks keep ticking. The result is that goroutines
could easily appear to be blocked on a mutex much longer than just the
sleep time.
However, the contention upper bound is still useful, especially for
identifying wildly incorrect values. Set the contention total to be
proportional to the total wall-time spent in the actual sampling mutex
block sampling portion of the code. This should be a generous
upper-bound on how much contention there could be, because it should in
theory capture any delays from the environment in it as well.
Still, rounding errors could be an issue, and on Windows the time
granularity is quite low (~15ms, or 15% of what each goroutine is
supposed to add to the mutex profile), so getting unlucky with where
time measurements fall within each tick could also be a problem. Add an
extra 10%, which seems to make it much less likely to fail in a Windows
gomote.
Fixes#62094.
Change-Id: I59a10a73affd077185dada8474b91d0bc43b4a43
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String symbol names could contain weird characters as we put the
string literal into the symbol name. So it may appear to need
mangling. However, as string symbols are grouped into a single
"go:string.*" symbol, the individual symbol names actually don't
matter. So don't mangle them.
Also make the mangling code more defensive in case of weird
symbol names.
Fixes#62098.
Change-Id: I533012567a9fffab69debda934f426421c7abb04
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This CL implements the remainder of the zero-copy string->[]byte
conversion optimization initially attempted in go.dev/cl/520395, but
fixes the tracking of mutations due to ODEREF/ODOTPTR assignments, and
adds more comprehensive tests that I should have included originally.
However, this CL also keeps it behind the -d=zerocopy flag. The next
CL will enable it by default (for easier rollback).
Updates #2205.
Change-Id: Ic330260099ead27fc00e2680a59c6ff23cb63c2b
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In order for decoding to faithfully reproduce the encoded input,
the symbols must be unique (i.e., provide a bijective mapping).
Thus, reject duplicate symbols in NewEncoding.
As a minor optimization, modify WithPadding to use the decodeMap
to quickly check whether the padding character is used in O(1)
instead of O(32) or O(64).
Change-Id: I5631f6ff9335c35d59d020dc0e307e3520786fbc
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Change the internal constant enableInterfaceInference to a unifier
field that can be controlled dynamically and set it for Go 1.21
or later.
This restores Go 1.20 unification behavior for interfaces.
Fixes#61903.
Change-Id: Iefd6c0899811f8208a8be9cef2650a07787ae177
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This reverts CL 514715.
This will make it easier to make interface inference conditional
based on the current language version.
For #61903.
Change-Id: I07820c861d6ebfd04899e41eb4123f26af2da1ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/520195
Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Robert Griesemer <gri@google.com>
Irrespective of whether unification is exact or inexact, method
signatures of interfaces must always match exactly: a type never
satisfies/implements an interface if relevant method signatures
are different (i.e., not identical, possibly after substitution).
This change matches the fix https://go.dev/cl/519435.
For #61879.
Change-Id: I28b0a32d32626d85afd32e107efce141235a923d
Reviewed-on: https://go-review.googlesource.com/c/go/+/519455
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
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The ssagen pass runs concurrently, so it's not safe to mutate global
variables like this.
Instead, turn it into a constant and add an assertion that the
constant has the correct value.
Fixes#62095.
Change-Id: Ia7f07e33582564892d194153ac3d8759429fc9ac
Reviewed-on: https://go-review.googlesource.com/c/go/+/520598
TryBot-Result: Gopher Robot <gobot@golang.org>
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Reviewed-by: Keith Randall <khr@golang.org>
Auto-Submit: Matthew Dempsky <mdempsky@google.com>
A 0 in phdr.p_align is the same as 1, meaning no alignment.
Fixes#62097
Change-Id: I931bab443fd6a89b5b45c8f99ead217f02e9b453
Reviewed-on: https://go-review.googlesource.com/c/go/+/520597
Auto-Submit: Ian Lance Taylor <iant@golang.org>
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This reverts CL 520395.
Reason for revert: thanm@ pointed out failure cases.
Change-Id: I3fd60b73118be3652be2c08b77ab39e793b42110
Reviewed-on: https://go-review.googlesource.com/c/go/+/520596
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
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