1
0
mirror of https://github.com/golang/go synced 2024-11-14 14:10:29 -07:00
Commit Graph

47432 Commits

Author SHA1 Message Date
Cherry Zhang
f5efa5a313 cmd/compile: load results into registers on open defer return path
When a function panics then recovers, it needs to return to the
caller with named results having the correct values. For
in-register results, we need to load them into registers at the
defer return path.

For non-open-coded defers, we already generate correct code, as
the defer return path is part of the SSA CFG and contains the
instructions that are the same as an ordinary return statement,
including putting the results to the right places.

For open-coded defers, we have a special code generation that
emits a disconnected block that currently contains only the
deferreturn call and a RET instruction. It leaves the result
registers unset. This CL adds instructions that load the result
registers on that path.

Updates #40724.

Change-Id: I1f60514da644fd5fb4b4871a1153c62f42927282
Reviewed-on: https://go-review.googlesource.com/c/go/+/307231
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-06 20:22:15 +00:00
Austin Clements
bcc4422ee1 runtime: deflake TestGCTestIsReachable
This is a simple workaround for a bug where runtime.GC() can return
before finishing a full sweep, causing gcTestIsReachable to throw. The
right thing is to fix runtime.GC(), but this should get this test
passing reliably in the meantime.

Updates #45315.

Change-Id: Iae141e6dbb26a9c2649497c1feedd4aaeaf540c7
Reviewed-on: https://go-review.googlesource.com/c/go/+/307809
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-06 19:55:44 +00:00
Ahmet Aktürk
1271e9a9cc time: properly quote strings containing quotes and backslashes
Fixes #45391

Change-Id: I43ea597f6a9596a621ae7b63eb05440d5b9e2d8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/307192
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-06 19:18:47 +00:00
Bryan C. Mills
2e6f39beb0 cmd/go/internal/modload: factor out a method to update loader requirements
For #36460

Change-Id: Idb0b333a28d2470bc9482fe1829ccb6ddf8abd34
Reviewed-on: https://go-review.googlesource.com/c/go/+/304909
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-06 19:13:44 +00:00
Robert Griesemer
d6a90d06d2 cmd/compile/internal/types2: simplify Checker.Call
Now that we use square brackets for instantiations, we
can tell type arguments from ordinary arguments without
"guessing" which permits a simpler implementation.

Specifically, replace use of Checker.exprOrTypeList with
Checker.exprList, and delete Checker.exprOrTypeList and
Checker.multiExprOrType.

Disable a test for an (esoteric) failure due to an
unrelated problem with error matching when running
the test.

Change-Id: I17f18fffc32f03fa90d93a68ebf56e5f2fcc9dab
Reviewed-on: https://go-review.googlesource.com/c/go/+/306171
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-06 19:00:26 +00:00
Robert Griesemer
3a30381b21 cmd/compile/internal/types2: simplify Checker.funcInst
Now that we use square brackets for instantiations, we
can tell type arguments from ordinary arguments without
"guessing" which permits a simpler implementation.

While at it, also fix a minor position error for type
instantiations (now matching the code for function
instantiations).

Change-Id: I20eca51c5b06259703767b5906e89197d6cd595a
Reviewed-on: https://go-review.googlesource.com/c/go/+/306169
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-06 18:59:08 +00:00
Robert Griesemer
93466cc1b6 cmd/compile/internal/types2: review of pos.go and move into syntax package
This moves the two helper functions startPos and endPos into
the syntax package where they belong. Export the functions and
adjust dependent code.

Change-Id: I8170faeadd7cfa8f53009f81fcffd50ec0fc6a98
Reviewed-on: https://go-review.googlesource.com/c/go/+/305578
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2021-04-06 18:57:04 +00:00
Robert Griesemer
d57189e92b test/syntax: remove interface.go
The exact same test case covered by this file is also in
fixedbugs/bug121.go. No need for duplication.

Also, the actual syntax error tested (multiple method names
with a single signature) is an unlikely syntax error, and
only here for historical reasons (in the very beginning, this
was actually possible to write). Now, virtually nobody is making
this mistake.

Change-Id: I9d68e0aee2a63025f44e6338647f8250ecc3077a
Reviewed-on: https://go-review.googlesource.com/c/go/+/307789
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-04-06 18:55:39 +00:00
Cherry Zhang
55bac87bd6 runtime/pprof: deflake TestMorestack
In TestMorestack, on macOS, for some reason it got most of the
samples in synchronization (e.g. pthread_cond_signal and
pthread_cond_wait) and sometimes in other "syscalls" (usleep,
nanotime1), and very few samples in stack copying, sometimes 0,
which causes the test to fail. Maybe synchronization is slower on
macOS? (It doesn't seem so to me.) Or it is the OS's accounting
problem, where it is more likely to trigger a profiling signal
at a syscall (or certain kinds of syscalls)?

As the test is really about whether it can connect stack copying
with the function that grows the stack, this CL makes it spend
more time in copying stack than synchronization. Now it's getting
~100 samples for stack copying on a 5 second interval on my
machine, and the test passes reliably.

Fixes #44418.

Change-Id: I3a462c8c39766f2d67d697598f8641bbe64f16ad
Reviewed-on: https://go-review.googlesource.com/c/go/+/307730
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
2021-04-06 18:01:39 +00:00
Cherry Zhang
b345a306a0 cmd/compile: when GOSSAFUNC is set, dump the current pass on crash
When an SSA pass ICEs, it calls f.Fatalf, which terminates the
compiler. When GOSSAFUNC is set, the current pass is not written
to ssa.html. This CL makes it write ssa.html when it calls Fatalf,
for the ease of debugging.

Change-Id: I5d55e4258f0693d89c48c0a84984f2f893b0811d
Reviewed-on: https://go-review.googlesource.com/c/go/+/307509
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
2021-04-06 14:15:29 +00:00
Paul E. Murphy
939b561a6e cmd/internal/obj: reorg ppc64 MOV* optab entries and remove unused classes
C_LECON and C_SECON classifications are not generated on ppc64, however
there are many optab entries which match against them. Remove them to
resolve their related TODOs.

Likewise, reorder the optab entries for better readability.

Change-Id: I894a209a148014e5aa438b7303e7fbdda4727c4e
Reviewed-on: https://go-review.googlesource.com/c/go/+/307429
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Trust: Carlos Eduardo Seo <carlos.seo@linaro.org>
2021-04-06 13:13:28 +00:00
Dan Scales
5cd8a34495 cmd/compile: fix gcSizes.Sizeof for a zero-sized struct
(*gcSizes).Sizeof was requiring the last field of a zero-sized struct to
be at least one byte. But that rule (fix for #9401, see logic in
calcStructOffset) only applies to a struct that has some non-zero sized
fields. Fix (*gcSizes).Sizeof to have the logic like calcStructOffset.

Fixes running the gotests with -G=3 enabled.

Fixes #45390

Change-Id: I011f40e3de3a327392bbbb791b9422be75336313
Reviewed-on: https://go-review.googlesource.com/c/go/+/307549
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-04-06 13:01:37 +00:00
cui
84162b8832 cmd/compile/internal/typecheck: call tcConv directly
Change-Id: I9f71acfa93c47cff620b006918872ecd90bbebe9
GitHub-Last-Rev: 2fed2e2305
GitHub-Pull-Request: golang/go#45366
Reviewed-on: https://go-review.googlesource.com/c/go/+/307109
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
2021-04-06 09:22:20 +00:00
Charlie Moog
a25c584629 os: implement fs.StatFS for os.DirFS
Change-Id: I1d7382bf522aeda7148431b348f6ab9a162be097
Reviewed-on: https://go-review.googlesource.com/c/go/+/304531
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Robert Griesemer <gri@golang.org>
2021-04-06 04:48:09 +00:00
Michael Anthony Knyszek
d8306ee1f9 runtime: make reflectcall ABI0 on amd64
reflectcall expects the ABI0 calling convention, but it's marked as
ABIInternal. When it gets called this way, naturally it doesn't work
very well.

For #40724.

Change-Id: Ic76237420cd8c72f5df1c1ac7972ad6f989f8402
Reviewed-on: https://go-review.googlesource.com/c/go/+/306931
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-06 03:31:38 +00:00
Michael Anthony Knyszek
298975c634 runtime: use funcID to identify abort in isAbortPC
This change eliminates the use of funcPC to determine if an PC is in
abort. Using funcPC for this purpose is problematic when using plugins
because symbols no longer have unique PCs. funcPC also grabs the wrapper
for runtime.abort which isn't what we want for the new register ABI, so
rather than mark runtime.abort as ABIInternal, use funcID.

For #40724.

Change-Id: I2730e99fe6f326d22d64a10384828b94f04d101a
Reviewed-on: https://go-review.googlesource.com/c/go/+/307391
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-06 03:31:26 +00:00
Than McIntosh
b2389ad3ce cmd/compile: fix for zerorange on plan9-amd64
In CL 305829 a problematic change was made to the compiler's
amd64-specific "zerorange" function. In zerorange the compiler uses
different sets of strategies depending on the size of the stack frame
it needs to zero; turns out that only on plan9-amd64 was it hitting
the final fallback strategy, which is a REPSTOSQ instruction. REPSTOSQ
takes RAX as an input, hence the changes made in CL 305829 (switching
to R13) were incorrect.

This patch restores the zerorange REPSTOSQ sequence (back to use RAX).
This is going to be an interim solution, since long term we need to
avoid touching RAX in the function prolog (since if the new register
ABI is in effect, it will hold a live value).

Fixes #45372.

Change-Id: Ic89a6a2a76d6e03b9fbda99275101e96b70fdf5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/307469
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David du Colombier <0intro@gmail.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 23:21:16 +00:00
Cherry Zhang
d446cb7cff reflect: call ABI0 callReflect/callMethod
Currently the assembly code marshals arguments in ABI0 layout.
Call the ABI0 functions. We may want to move to ABIInternal at
some point (maybe when register args is always enabled).

Updates #40724.

Change-Id: I23bb3073f3f6420a8d0c119b65ae3e577578aadb
Reviewed-on: https://go-review.googlesource.com/c/go/+/307237
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 22:43:42 +00:00
Cherry Zhang
0723f062ff cmd/compile: enable panic+recover adjustment for some ABI wrappers
For most ABI wrappers we don't need it because we're never going
to defer an ABI wrapper for a function that then recovers, so
that's would just be unnecessary code in the ABI wrapper.

However, for functions that could be on the path of invoking a
deferred function that can recover (runtime.reflectcall,
reflect.callReflect, and reflect.callMethod), we do want the
panic+recover adjustment. Set the Wrapper flag for them.

Currently, those functions are defined as ABIInternal to avoid
the ABI wrappers. But the assembly code still follows ABI0
calling convention, which would not work with the register-based
calling convention. In particlar, it is not possible to make
runtime.reflectcall ABIInternal, because it tail calls
runtime.callNN functions, which are splittable. Later CLs will
make them ABI0 and use the wrappers.

Updates #40724.

Change-Id: Ic7a45bbc6f726d29b5cb4932951a9d71578dcaf6
Reviewed-on: https://go-review.googlesource.com/c/go/+/307236
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 22:38:48 +00:00
Filippo Valsorda
79b2e14b1a crypto/ed25519: add comprehensive edge-case test vectors
This will allow us to make changes to the internals confidently, without
risking causing issues in consensus applications. It will also prevent
architecture-specific divergence, like #40475.

Fixes #40478

Change-Id: I8c2b31406ca88add6941f14d8df8cecb96379cde
Reviewed-on: https://go-review.googlesource.com/c/go/+/304349
Run-TryBot: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Roland Shoemaker <roland@golang.org>
Reviewed-by: Katie Hockman <katie@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Filippo Valsorda <filippo@golang.org>
Trust: Katie Hockman <katie@golang.org>
2021-04-05 20:53:42 +00:00
James Fennell
27015152ec flag: use strings.Builder instead of concatenating strings
There is a single function in the flag package whose implementation
uses string concatenation instead of the recommended strings.Builder.
The function was last touched before strings.Builder was introduced
in Go 1.10, which explains the old style code. This PR updates
the implementation.

Fixes #45392

Change-Id: Id2d8f1788765a0c4faaeb1e6870914f72b3c8442
GitHub-Last-Rev: 0e12fe3045
GitHub-Pull-Request: golang/go#45393
Reviewed-on: https://go-review.googlesource.com/c/go/+/307329
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
2021-04-05 20:39:06 +00:00
David Chase
ee40bb666b cmd/compile: add "surprised by IData of Arg" case for register args
This fixes a compile crash for
GOEXPERIMENT=regabi,regabiargs go test -c  go/constant

Updates #40724.

Change-Id: I238cef436e045647815326fc8fdb025c30ba1f5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/307309
Trust: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 20:11:08 +00:00
Jay Conrod
254fb85c12 cmd/go: print deprecation notice for 'go get cmd'
The notice is shown when 'go get' is invoked with the -d flag, and
the arguments match at least one main package.

This reverts CL 274552.

For #43684

Change-Id: I42e6731455f22988bf72dde1d5a76d197e9e3954
Reviewed-on: https://go-review.googlesource.com/c/go/+/305670
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-05 20:05:34 +00:00
wolf1996
d5b9dc1317 cmd/cgo: pass end position info for C function arguments.
Pass information about original end position for c function arguments
processed in pointer checking generated code.

Fixes #42580

Change-Id: Ic8a578168362f0ca6055064dbbea092ad37477a6
Reviewed-on: https://go-review.googlesource.com/c/go/+/269760
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2021-04-05 19:29:17 +00:00
Ian Lance Taylor
e985245cd5 net: make ErrClosed and ParseError implement net.Error
Fixes #45357

Change-Id: Iafd41fff232a89be4c88d4b1d66bc3c04d888bcc
Reviewed-on: https://go-review.googlesource.com/c/go/+/307030
Trust: Ian Lance Taylor <iant@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
2021-04-05 19:15:53 +00:00
Paul E. Murphy
a1a45afd4a cmd/internal/obj: remove duplicate ppc64 spr MOV* optab entries
The matching rules will match C_SPR for the commonly used SPR
entries (xer, lr, ctr).

Change-Id: I93759c1ce2891f6825661b99c5cbb89250b64ab7
Reviewed-on: https://go-review.googlesource.com/c/go/+/304429
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.org>
Trust: Carlos Eduardo Seo <carlos.seo@linaro.org>
2021-04-05 18:59:09 +00:00
Martin Sucha
a11244e95e time: use offset and isDST when caching zone from extend string
If the current time is computed from extend string
and the zone file contains multiple zones with the
same name, the lookup by name might find incorrect
zone.

This happens for example with the slim Europe/Dublin
time zone file in the embedded zip. This zone file
has last transition in 1996 and rest is covered by
extend string.
tzset returns IST as the zone name to use, but there
are two records with IST name. Lookup by name finds
the wrong one. We need to check offset and isDST too.

In case we can't find an existing zone, we allocate
a new zone so that we use correct offset and isDST.

I have renamed zone variable to zones as it shadowed
the zone type that we need to allocate the cached zone.

Fixes #45370

Change-Id: I79102e4873b6de20d8a65f8a3057519ff5fae608
Reviewed-on: https://go-review.googlesource.com/c/go/+/307190
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-05 18:52:42 +00:00
Cherry Zhang
cf148f3d46 cmd/compile, runtime: use ABI-aware function converting float to interface
Currently, when converting a float (say float64), we use convT64
function. In the runtime convT64 expects a uint64 argument. In
the compiler, convT64 is defined as taking an "any" argument (so
it works with also uint64-like types such as [1]uint64). The "any"
type is instantiated with the concrete type in walk. So the
backend will see instances such as convT64([1]uint64).

Currently, float64 is treated as uint64-like. So the backend will
see convT64(float64). With a memory-based calling convention this
is fine. With a register-based calling convention, however, it
will pass the argument in a floating point register, whereas the
runtime expects the argument in an integer register (as it is
declared as uint64).

To fix this, this CL introduces runtime functions convT32F and
convT64F. They behave the same as convT32/convT64, but with a
float argument. In the compiler, use convT32F/convT64F to convert
float-like type to interface.

With this, "GOEXPERIMENT=regabi,regabiargs go test math fmt"
works.

Updates #40724.

Change-Id: I8b2e232096a95e4a7c4ab81795d77ef224ffaab3
Reviewed-on: https://go-review.googlesource.com/c/go/+/307232
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-05 18:22:47 +00:00
KimMachineGun
a040ebeb98 all: update references to symbols moved from io/ioutil to io
Update references missed in CL 263142.

For #41190

Change-Id: I778760a6a69bd0440fec0848bdef539c9ccb4ee1
GitHub-Last-Rev: dda42b09ff
GitHub-Pull-Request: golang/go#42874
Reviewed-on: https://go-review.googlesource.com/c/go/+/273946
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Cherry Zhang <cherryyz@google.com>
2021-04-05 17:51:15 +00:00
cui
9abedf4827 cmd/compile/internal/ssagen: conditon not need
n.Op() == ir.OFOR so n.Op() != ir.OFORUNTIL is always true

Change-Id: I97191783c1fb31ef76e0601f626b45af1e8d316e
GitHub-Last-Rev: f68f9fecfb
GitHub-Pull-Request: golang/go#45389
Reviewed-on: https://go-review.googlesource.com/c/go/+/307251
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
2021-04-05 17:42:13 +00:00
Cherry Zhang
5cc5576a9c cmd/compile: untangle Wrapper and ABIWrapper flags
Currently, there are Wrapper and ABIWrapper attributes. Wrapper
is set when compiler generates an wrapper function (e.g. method
wrapper). ABIWrapper is set when compiler generates an ABI
wrapper. It also sets Wrapper flag for ABI wrappers.

Currently, they have the following meanings:
- Wrapper flag hides the frame from (normal) traceback.
- Wrapper flag enables special panic+recover adjustment, so it
  can correctly recover when a wrapper function is deferred.
- ABIWrapper flag disables the panic+recover adjustment, because
  we never defer an ABI wrapper that can recover.

This CL changes them to:
- Both Wrapper and ABIWrapper flags hide the frame from (normal)
  traceback. (Setting one is enough.)
- Wrapper flag enables special panic+recover adjustment.
  ABIWrapper flag no longer has effect on this.

This makes it clearer if we do want an ABI wrapper that also does
the panic+recover adjustment. In the old mechanism we'd have to
unset ABIWrapper flag, even if the function is actually an ABI
wrapper. In the new mechanism we just need to set both ABIWrapper
and Wrapper flags.

Updates #40724.

Change-Id: I7fbc83f85d23676dc94db51dfda63dcacdf1fc19
Reviewed-on: https://go-review.googlesource.com/c/go/+/307235
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 17:27:18 +00:00
Cherry Zhang
45e87cd3ec cmd/compile: disable tail call for method wrappers when RegabiArgs is enabled
Currently, the IR of tailcall does not connect the arguments with
the OTAILCALL node, so the arguments are not marshaled correctly.
Disable tail call for now.

Updates #40724.

Change-Id: I39de3ea8e19a23eb63768ab7282d2f870e9c266e
Reviewed-on: https://go-review.googlesource.com/c/go/+/307234
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 17:25:15 +00:00
Cherry Zhang
411860251e cmd/compile: reference ABIInternal memequal_varlen
memequal_varlen is put into a closure and is called in internal
ABI in the runtime. Emit an ABIInternal reference.

Updates #40724.

Change-Id: I914555f8188561882625e008b595389e50a3a167
Reviewed-on: https://go-review.googlesource.com/c/go/+/307233
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 17:22:53 +00:00
Cherry Zhang
e617b2b0dd cmd/compile: add a debug flag to enable/disable open-coded defers
For debugging.

Change-Id: I831947376569cd2285b713ad304329951adf60ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/307230
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 17:22:26 +00:00
Cherry Zhang
dcf85b30ba cmd/link: mangle function name with ABI on Mach-O
This is not strictly necessary. But as we already do this on
ELF and PE, do it here as well.

Updates #40724.

Change-Id: Ie6e5211aba116634bc9ed82eb8d22a7fed3b7776
Reviewed-on: https://go-review.googlesource.com/c/go/+/307229
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2021-04-05 16:37:20 +00:00
Austin Clements
9e3328e740 cmd/internal/objabi: remove StackPreempt
None of the stack check prologues depend on this constant at this
point (and, indeed, they shouldn't).

Change-Id: Iaa40d9c47285b26952f02a7bdde574e8385ffe95
Reviewed-on: https://go-review.googlesource.com/c/go/+/307152
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:19 +00:00
Austin Clements
191167c2b2 cmd/internal/obj/s390x: simplify huge frame prologue
CL 307010 for s390x.

Change-Id: I43e1f93dd01c814417f8ef7480aa82c05b2b6b66
Reviewed-on: https://go-review.googlesource.com/c/go/+/307151
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:18 +00:00
Austin Clements
042f4cbb6f cmd/internal/obj/riscv: simplify huge frame prologue
CL 307010 for riscv64.

Some of the comments on the other prologue paths were wrong, so this
CL also fixes them up.

Change-Id: Icdca1ade3a47ae6e2467af832690d40689dbe1b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/307150
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:17 +00:00
Austin Clements
a06b08e7d1 cmd/internal/obj/ppc64: simplify huge frame prologue
CL 307010 for ppc64.

I spent a long time trying to figure out how to use the carry bit from
ADDCCC to further simplify this (like what we do on arm64), but gave
up after I couldn't figure out how to access the carry bit without
just adding more instructions.

Change-Id: I6cad51b93616865b203cb16554f16121375aabbc
Reviewed-on: https://go-review.googlesource.com/c/go/+/307149
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:16 +00:00
Austin Clements
2b63404ddb cmd/internal/obj/mips: simplify huge frame prologue
CL 307010 for mips.

Change-Id: Ie9addea728548315fdbb8e46f75da4010a9796bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/307051
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:14 +00:00
Austin Clements
4702dd67a7 cmd/internal/obj/arm64: simplify huge frame prologue
CL 307010 for arm64.

Change-Id: I6c6e1bd6065df059e50c3632a9eb669b64fce899
Reviewed-on: https://go-review.googlesource.com/c/go/+/307050
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:13 +00:00
Austin Clements
24dd8cfe23 cmd/internal/obj/arm: simplify huge frame prologue
CL 307010 for arm.

Change-Id: I14d939eb8aa6f594927054a2595f8c270a0b607f
Reviewed-on: https://go-review.googlesource.com/c/go/+/307049
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2021-04-05 16:22:12 +00:00
Austin Clements
ef3122e909 cmd/internal/obj/x86: simplify huge frame prologue
For stack frames larger than StackBig, the stack split prologue needs
to guard against potential wraparound. Currently, it carefully
arranges to avoid underflow, but this is complicated and requires a
special check for StackPreempt. StackPreempt is no longer the only
stack poison value, so this check will incorrectly succeed if the
stack bound is poisoned with any other value.

This CL simplifies the logic of the check, reduces its length, and
accounts for any possible poison value by directly checking for
underflow.

Change-Id: I917a313102d6a21895ef7c4b0f304fb84b292c81
Reviewed-on: https://go-review.googlesource.com/c/go/+/307010
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
2021-04-05 16:22:10 +00:00
Ruslan Andreev
af1789a61c runtime: extend internal atomics to comply with sync/atomic
The CV add changes according to TODO in Go source-code.
Internal atomic set does not comply with sync/atomic library and has shortage
operations for signed integers.
This patch extend internal atomic set by Int32 and Int64 operations. It's
implemented new aliases and asm versions of operations. As a result Cas64 was
replaced by Casint64 in findRunnableGCWorker without type casting.
Another purpose is unified structure of internal atomics' source code. Before,
assembly impementations for different archs were in different files. For
example, filename for AMD64 was asm_amd64.s, but filename for RISC-V was
atomic_riscv64.s. Some arches have both files without any meaning. So, assembly
files were merged and renamed to atomic_{$ARCH}.s filenames.

Change-Id: I29a05a7cbf5f4a9cc146e8315536c038af545677
Reviewed-on: https://go-review.googlesource.com/c/go/+/289152
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2021-04-05 15:56:14 +00:00
Dan Scales
a4b8241d97 cmd/compile: get rid of Fields in types.Interface, use allMethods in types.Type instead
Confusingly, the set of all methods of an interface is currently set in
Fields field of types.Interface. This is true, even though there is
already an allMethods field (and AllMethods method) of types.Type.
Change so the set of all methods of an interface are stored in
Type.allMethods, and Interface.Fields is removed. Update the comments
for Methods and AllMethods.

Change-Id: Ibc32bafae86831cba62606b079a855690612c759
Reviewed-on: https://go-review.googlesource.com/c/go/+/307209
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2021-04-05 15:30:15 +00:00
Jay Conrod
6ed045b365 cmd/go: refactor modload.CheckRetractions
Extract queryLatestVersionIgnoringRetractions, which returns the
version we should load retractions and deprecations from. This will be
shared with CheckDeprecations.

Rename ShortRetractionRationale to ShortMessage. This will be used to
shorten deprecation warnings as well.

For #40357

Change-Id: Ic1e0c670396bdb3bd87c7a97cf2b14ca58ea1d80
Reviewed-on: https://go-review.googlesource.com/c/go/+/306332
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-05 15:29:16 +00:00
Jay Conrod
ee51e3d895 cmd/go: refactor modload.ListModules to accept bit flags
Instead of accepting bool flags, ListModules now accepts ListMode, a
set of bit flags.

Four flags are defined. listRetracted is split into ListRetracted and
ListRetractedVersion to avoid ambiguity with -u, -retracted, and
-versions.

For #40357

Change-Id: Ibbbe44dc1e285ed17f27a6581f3392679f2124fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/306331
Trust: Jay Conrod <jayconrod@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
2021-04-05 15:29:05 +00:00
Tobias Klauser
4230a6ebdd os: don't use T.Cleanup in TestRemoveAllLongPath
Revert CL 306290 changes to TestRemoveAllLongPath. This breaks the test
on aix, illumos and solaris. We need to chdir out of startPath before
attempting to remove it.

Updates #45182

Change-Id: Ic14fa1962d6f2cc83238f6fc2c6932fd9a6e52a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/307189
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
2021-04-04 20:04:37 +00:00
Clément Chigot
7bfd681c2f runtime/pprof: skip tests for AIX
Most of the time, the pprof tests are passing, except
for the builder. The reason is still unknown but I'd rather release
the builder to avoid missing other more important bugs.

Updates #45170

Change-Id: I667543ee1ae309b7319c5b3676a0901b4d0ecf2e
Reviewed-on: https://go-review.googlesource.com/c/go/+/306489
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
2021-04-04 12:04:33 +00:00
ianwoolf
776d8d387c os, path/filepath: use T.Cleanup to restore the original working directory
Updates #45182

Change-Id: Iaf3bdcc345c72fa9669fdc99908ada4e89904edd
Reviewed-on: https://go-review.googlesource.com/c/go/+/306290
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2021-04-04 00:01:03 +00:00