This CL combines several rules together via regular expression,
but won't impact generated 386 code.
Change-Id: I354006fe801fc952e3a9431cae63229922c9ba48
Reviewed-on: https://go-review.googlesource.com/c/139957
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
The indexed MOVload and MOVstore have similar logic, and this CL
combine them together. The total size of pkg/linux_386/cmd/compile/
decreases about 4KB.
Change-Id: I06236a3542aaa3dfc113c49fe4c69d209e018dfe
Reviewed-on: https://go-review.googlesource.com/c/139958
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This reverts commit d217004061.
Reason for revert: It broke all the darwin builders; it's also not
obvious how the weird darwin versions (900, 1000) relate to the > 3.9
requisite, so I'm not sure how to decide about skipping in a robust
way. It's better to revert the check for now.
Fixes#28028
Change-Id: Ibbcb7bf7cd2136e0851ebd097a2bc4dec9f0ee18
Reviewed-on: https://go-review.googlesource.com/c/140217
Reviewed-by: Keith Randall <khr@golang.org>
Updates the route package to git rev 146acd2 for:
- 146acd2 don't run NET_RT_IFLIST vs. NET_RT_IFLISTL test in 386 emulation (again)
Change-Id: I24de1eb31b2ca0e24cb9ab1648f7a71b5067cf97
Reviewed-on: https://go-review.googlesource.com/c/139937
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This is similar to CL 136816 for x/sys/unix, changing the FreeBSD ABI to use 64-bit inodes in
Stat_t, Statfs_t, and Dirent types.
The changes are forward compatible, that is FreeBSD 10.x, 11.x continue to use their current sysnum numbers.
The affected types are converted to the new layout (with some overhead).
Thus the same statically linked binary should work using the native sysnums (without any conversion) on FreeBSD 12.
Breaking API changes in package syscall are:
Mknod takes a uint64 (C dev_t) instead of int.
Stat_t: Dev, Ino, Nlink, Rdev, Gen became uint64.
Atimespec, Mtimespec, Ctimespec, Birthtimespec renamed to Atim, Mtim, Ctim, Birthtim respectively.
Statfs_t: Mntonname and Mntfromname changed from [88]int8 to [1024]int8 arrays.
Dirent: Fileno became uint64, Namlen uint16 and an additional field Off int64 (currently unused) was added.
The following commands were run to generate ztypes_* and zsyscall_* on FreeBSD-12.0-ALPHA6 systems (GOARCH=386 were run on the same amd64 host):
GOOS=freebsd GOARCH=amd64 ./mksyscall.pl -tags freebsd,amd64 syscall_bsd.go syscall_freebsd.go syscall_freebsd_amd64.go |gofmt >zsyscall_freebsd_amd64.go
GOOS=freebsd GOARCH=amd64 go tool cgo -godefs types_freebsd.go | GOOS=freebsd GOARCH=amd64 go run mkpost.go >ztypes_freebsd_amd64.go
GOOS=freebsd GOARCH=386 ./mksyscall.pl -l32 -tags freebsd,386 syscall_bsd.go syscall_freebsd.go syscall_freebsd_386.go |gofmt >zsyscall_freebsd_386.go
GOOS=freebsd GOARCH=386 go tool cgo -godefs types_freebsd.go | GOOS=freebsd GOARCH=386 go run mkpost.go >ztypes_freebsd_386.go
GOOS=freebsd GOARCH=arm ./mksyscall.pl -l32 -arm -tags freebsd,arm syscall_bsd.go syscall_freebsd.go syscall_freebsd_arm.go |gofmt >zsyscall_freebsd_arm.go
GOOS=freebsd GOARCH=arm go tool cgo -godefs -- -fsigned-char types_freebsd.go | GOOS=freebsd GOARCH=arm go run mkpost.go >ztypes_freebsd_arm.go
The Kevent struct was changed to use the FREEBSD_COMPAT11 version always (requiring the COMPAT_FREEBSD11 kernel option FreeBSD-12, this is the default).
The definitions of ifData were not updated, their functionality in has have been replaced by vendored golang.org/x/net/route.
freebsdVersion initialization was dropped from init() in favor of a sync.Once based wrapper - supportsABI().
Updates #22448.
Change-Id: I359b756e2849c036d7ed7f75dbd6ec836e0b90b4
Reviewed-on: https://go-review.googlesource.com/c/138595
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
runtime.armArch is unused on linux/arm since CL 93637. The new code in
runtime/internal/atomic (added by CL 111315) only checks runtime.goarm.
Change-Id: Ic097ee6750e39abb20f45770a1c7c2d925f02408
Reviewed-on: https://go-review.googlesource.com/c/140077
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1) Scopes do have a comment field for documentation (debugging output).
No need to do anything extra.
2) The testcase in expr3.src has ok error messages. Enabled.
Change-Id: Ic1a03bfec0a6a70d876aa6cfb936973abe58fe6c
Reviewed-on: https://go-review.googlesource.com/c/139902
Reviewed-by: Alan Donovan <adonovan@google.com>
This work-around is not needed anymore now that method
signatures are type-checked separately from their receiver
base types: no artificial cycles are introduced anymore
and so there is no need to artificially cut them.
Fixes#26854.
Change-Id: I2ef15ceeaa0b486f65f6cdc466d0cf06246c74d7
Reviewed-on: https://go-review.googlesource.com/c/139900
Reviewed-by: Alan Donovan <adonovan@google.com>
This work-around is not needed anymore now that method
signatures are type-checked separately from their receiver
base types: no artificial cycles are introduced anymore
and so there is no need to artificially cut them.
Updates #26124.
Change-Id: I9d50171f12dd8977116a5d3f63ac39a06b1cd492
Reviewed-on: https://go-review.googlesource.com/c/139899
Reviewed-by: Alan Donovan <adonovan@google.com>
As a side-effect we also get slightly clearer errors for some
pathological cyclic method declarations.
Fixes#23203.
Updates #26854.
Change-Id: I30bd6634ac6be26d3f4ef8c7b32e5c1bf76987dd
Reviewed-on: https://go-review.googlesource.com/c/139897
Reviewed-by: Alan Donovan <adonovan@google.com>
Remove assumption that methods associated to concrete (non-interface)
types have a fully set up signature. Such methods are found through
LookupFieldOrMethod or lookupMethod, or indexed method access from
a Named type. Make sure that the method's signature is type-checked
before use in those cases.
(MethodSets also hold methods but the type checker is not using
them but for internal verification. API clients will be using it
after all methods have been type-checked.)
Some functions such as MissingMethod may now have to type-check a
method and for that they need a *Checker. Add helper functions as
necessary to provide the additional (receiver) parameter but permit
it to be nil if the respective functions are invoked through the API
(at which point we know that all methods have a proper signature and
thus we don't need the delayed type-check).
Since all package-level objects eventually are type-checked through
the top-level loop in Checker.packageObjects we are guaranteed that
all methods will be type-checked as well.
Updates #23203.
Updates #26854.
Change-Id: I6e48f0016cefd498aa70b776e84a48215a9042c5
Reviewed-on: https://go-review.googlesource.com/c/139425
Reviewed-by: Alan Donovan <adonovan@google.com>
The prior CL prepared go/types for the situation where methods might
not have a type-checked signature when being looked up. The respective
adjustments to recvPtr were not correct (but because so far method
signatures are type-checked in time, the bug didn't manifest itself).
Updates #23203.
Updates #26854.
Change-Id: I796691d11e6aac84396bdef802ad30715755fcc6
Reviewed-on: https://go-review.googlesource.com/c/139721
Reviewed-by: Alan Donovan <adonovan@google.com>
The origin tagKey is just dirname if no tags input which will cause
pkgCache missmatch if other imported pkg explicit on GOARCH or GOOS
This CL will add GOOS and GOARCH to tagKey
Fixes#8425Fixes#21181
Change-Id: Ifc189cf6746d753ad7c7e5bb60621297fc0a4e35
Reviewed-on: https://go-review.googlesource.com/c/138315
Reviewed-by: Robert Griesemer <gri@golang.org>
The alloc_m documentation refers to concepts that don't exist (and
maybe never did?). alloc_m is also not the API entry point to span
allocation.
Hence, rewrite the documentation for alloc and alloc_m. While we're
here, document why alloc_m must run on the system stack and replace
alloc_m's hand-implemented system stack check with a go:systemstack
annotation.
Change-Id: I30e263d8e53c2774a6614e1b44df5464838cef09
Reviewed-on: https://go-review.googlesource.com/c/139459
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
.rel symbol type is sym.SELFROSECT, and that makes .rel written
into .rdata section. But .rel stores code - jump table used for
external C functions. So we have to mark whole .rdata section
as executable (IMAGE_SCN_MEM_EXECUTE), because of .rel presence
in it.
Move .rel into .text section, and make .rdata section non executable.
I also had to move code that adjusted the size of .rel symbol
before calling textaddress, otherwise textaddress would not
calculate size of .text section correctly.
Fixes#25926
Change-Id: I4962f5de7b367410154c8709adfcd8472de9ac1a
Reviewed-on: https://go-review.googlesource.com/c/125455
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
On wasm, pcln tables are indexed by "resumption point ID" instead of
by pc offset. When finding a deferreturn call, we must find the
associated resumption point ID for the deferreturn call.
Update #27518
Fixes wasm bug introduced in CL 134637.
Change-Id: I3d178a3f5203a06c0180a1aa2309bfb7f3014f0f
Reviewed-on: https://go-review.googlesource.com/c/139898
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This change disables the export-subst and export-ignore attributes when
creating zip files for modules. This is done to prevent the ziphash for
a given repo/revision from differing based on variables such as git
version or size of repo. The full rational for this change is detailed
here:
https://github.com/golang/go/issues/27153#issuecomment-420763082Fixes#27153
Change-Id: Ib33f525d91d2581fa0b5d26e70d29620c7e685e9
Reviewed-on: https://go-review.googlesource.com/c/135175
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
The TestLldbPython test is known to fail with very old lldb releases
(3.8 and older). Skip the test when the lldb found on the system is
too old.
Fixes#22299
Change-Id: I8f78d6c0d995118f806dae87f3f04a9726473116
Reviewed-on: https://go-review.googlesource.com/c/139397
Reviewed-by: Ian Lance Taylor <iant@golang.org>
goos: linux
goarch: amd64
pkg: math
name old time/op new time/op delta
Mod 64.7ns ± 2% 63.7ns ± 2% -1.52% (p=0.003 n=8+10)
Change-Id: I851bec0fd6c223dab73e4a680b7393d49e81a0e8
Reviewed-on: https://go-review.googlesource.com/c/85095
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Currently the table of arena sizes mixes the number of entries in the
L1 with the size of the L2. While the size of the L2 is important,
this makes it hard to see what's actually going on because there's an
implicit factor of sys.PtrSize.
This changes the L2 column to say both the number of entries and the
size that results in. This should hopefully make the relations between
the columns of the table clearer, since they can now be plugged
directly into the given formula.
Change-Id: Ie677adaef763b893a2f620bd4fc3b8db314b3a1e
Reviewed-on: https://go-review.googlesource.com/c/139697
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
LookupFieldOrMethod needs to know if a method receiver is a pointer
type. Until now this was computed from the the method signature's
receiver, which required the method signature to be type-checked.
Furthermore, it required the receiver to be set before the method
signature was fully type-checked in some cases (see issue #6638).
This CL remembers this property during object resolution, when we
know it from the source.
With this CL, method signatures don't need to be type-checked before
they can be looked up; this is a first step towards separating
type checking of types and type-checking of associated methods.
Updates #23203.
Updates #26854.
Change-Id: Ie3eb7976e8fe8176ea1b284fa7471a4b7000f80b
Reviewed-on: https://go-review.googlesource.com/c/139422
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
In preparation for followup CL merging TPTR32 and TPTR64, move TPTR32
from the small-types fast path to the generic 64-bit fallback code so
that it's in the same case clause as TPTR64.
This should be safe, but theoretically it could change semantics
because TPTR32 used to always be assumed to be "small", whereas now it
will only be considered small for values less than 1<<31.
This change is done in a separate CL so that it's more easily
identified by git bisection in case it does introduce regressions.
Change-Id: I6c7bb253d4e4d95c530a6e05a1147905674b55ca
Reviewed-on: https://go-review.googlesource.com/c/139517
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
As pointed out in https://github.com/golang/go/issues/26463,
HOME (or equivalent) environment variable (rather than the
value obtained by parsing /etc/passwd or the like) should be
used to obtain user's home directory.
Since commit fa1a49aa55 there's a method to obtain
user's home directory -- use it here.
Change-Id: I852fbb24249bcfe08f3874fae6e7b9d01d869190
Reviewed-on: https://go-review.googlesource.com/c/139426
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Fixes#13491
Change-Id: Ic0525d8ee90f47d0d23c1485919aee13d2400494
Reviewed-on: https://go-review.googlesource.com/c/139537
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit makes syscall on js/wasm use the asynchronous variants
of functions in Node.js' fs module. This enables concurrency
and allows the API of the fs module to be implemented with an
alternative backend that only supports asynchronous operations.
Updates #26051.
Change-Id: Ibe1dcc988469fc11c3b8d8d49de439c12ddaafce
Reviewed-on: https://go-review.googlesource.com/c/137236
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
When an invalid UTF-8 byte sequence is decoded in a range loop over a string
a utf8.RuneError rune is returned. This is not distinguishable from decoding
the valid '\uFFFD' sequence representing utf8.RuneError from a string without
further checks within the range loop.
The previous Map code did not do any extra checks and would thereby not map
invalid UTF-8 byte sequences correctly when those were mapping to utf8.RuneError.
Fix this by adding the extra checks necessary to distinguish the decoding
of invalid utf8 byte sequences from decoding the sequence for utf8.RuneError
when the mapping of a rune is utf8.RuneError.
This fix does not result in a measureable performance regression:
name old time/op new time/op delta
ByteByteMap 1.05µs ± 3% 1.03µs ± 3% ~ (p=0.118 n=10+10)
Map/identity/ASCII 169ns ± 2% 170ns ± 1% ~ (p=0.501 n=9+10)
Map/identity/Greek 298ns ± 1% 303ns ± 4% ~ (p=0.338 n=10+10)
Map/change/ASCII 323ns ± 3% 325ns ± 4% ~ (p=0.679 n=8+10)
Map/change/Greek 628ns ± 5% 635ns ± 1% ~ (p=0.460 n=10+9)
MapNoChanges 120ns ± 4% 119ns ± 1% ~ (p=0.496 n=10+9)
Fixes#26305
Change-Id: I70e99fa244983c5040756fa4549ac1e8cb6022c3
Reviewed-on: https://go-review.googlesource.com/c/131495
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit adds AIX operating system to internal/poll package for ppc64
architecture.
Updates: #25893
Change-Id: I9b1da9255012de58f16547c1b18f8840485da170
Reviewed-on: https://go-review.googlesource.com/c/138717
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit adds AIX operating system to runtime package for ppc64
architecture.
Only new files and minor changes are in this commit. Others
modifications in files like asm_ppc64.s will be in separate commits.
Updates: #25893
Change-Id: I9c5e073f5f3debb43b004ad1167694a5afd31cfd
Reviewed-on: https://go-review.googlesource.com/c/138716
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Currently, the Windows profile loop isn't robust against racing with
unminit. For example,
T1 is running profileloop1, T2 is another thread
T1: thread := atomic.Loaduintptr(&T2.thread)
T2: calls unminit, which does CloseHandle(T2.thread)
T1: attempts to suspends T2
In this case the SuspendThread will fail, but currently we ignore this
failure and forge ahead, which will cause further failures and
probably bad profile data.
Handle this race by defending against SuspendThread failing. If
SuspendThread succeeds, then we know the thread is no longer going
anywhere.
Change-Id: I4726553239b17f05ca07a0cf7df49631e0cb550d
Reviewed-on: https://go-review.googlesource.com/c/129685
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
The debug call injection tests will freeze when run under a debugger
because they depend on catching SIGTRAP, which is usually swallowed by
a debugger.
Change-Id: If6b86ca279b0489182990dd513444ca3062973f1
Reviewed-on: https://go-review.googlesource.com/c/139437
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
And start using it elsewhere in the standard library, removing the
copies in the process.
While at it, rewrite the io.WriteString godoc to be more clear, since it
can now make reference to the defined interface.
Fixes#27946.
Change-Id: Id5ba223c09c19e5fb49815bd3b1bd3254fc786f3
Reviewed-on: https://go-review.googlesource.com/c/139457
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Allocate a long linked list on the stack. This tests both
lots of live stack objects, and lots of intra-stack pointers
to those objects.
Change-Id: I169e067416455737774851633b1e5367e10e1cf2
Reviewed-on: https://go-review.googlesource.com/c/135296
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
When a function triggers a signal (like a segfault which translates to
a nil pointer exception) during execution, a sigpanic handler is just
below it on the stack. The function itself did not stop at a
safepoint, so we have to figure out what safepoint we should use to
scan its stack frame.
Previously we used the site of the most recent defer to get the live
variables at the signal site. That answer is not quite correct, as
explained in #27518. Instead, use the site of a deferreturn call.
It has all the right variables marked as live (no args, all the return
values, except those that escape to the heap, in which case the
corresponding PAUTOHEAP variables will be live instead).
This CL requires stack objects, so that all the local variables
and args referenced by the deferred closures keep the right variables alive.
Fixes#27518
Change-Id: Id45d8a8666759986c203181090b962e2981e48ca
Reviewed-on: https://go-review.googlesource.com/c/134637
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The previous CL introduced stack objects. This CL removes the old
ambiguously live liveness analysis. After this CL we're relying
on stack objects exclusively.
Update a bunch of liveness tests to reflect the new world.
Fixes#22350
Change-Id: I739b26e015882231011ce6bc1a7f426049e59f31
Reviewed-on: https://go-review.googlesource.com/c/134156
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
