This CL simplifies and removes some old noding code, which isn't
necessary any more.
Most notably, we no longer need separate posMaps for each noder,
because noders are only used for parsing now. Before we started using
types2, noders were also responsible for constructed (untyped) IR, so
posMaps were necessary to translate syntax.Pos into src.XPos.
Change-Id: Ic761abcd727f5ecefc71b611635a0f5b088c941f
Reviewed-on: https://go-review.googlesource.com/c/go/+/463738
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To simplify backend analysis, we normalize variadic and method calls:
variadic calls are rewritten with an explicit slice argument, and
method calls are turned into function calls that pass the receiver
argument as the first parameter.
But because we've been supporting multiple frontends, this
normalization was scattered in various later passes. Now that we're
back to just one frontend, we can move the normalization forward into
typecheck (where most other IR normalization already happens).
Change-Id: Idd05ae231fc180ae3dd1664452414f6b6d578962
Reviewed-on: https://go-review.googlesource.com/c/go/+/463737
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All the Lookup* methods that resolve hostnames eventually call lookupIP
or lookupHost method. When the order is selected to be hostLookupCGO
then lookupHost calls cgoLookupHost which internally calls cgoLookupIP
(the lookupIP directly calls cgoLookupIP).
When we provide a context that is cancelled after cgo call, then the
cgoLookupIP returns completed == false, which caues the
lookupIP/lookupHost to fallback to the go resolver.
This fallback is unnecessary because our context is already cancelled.
The same thing can happen to LookupAddr.
Change-Id: Ifff7716c461f05d954ef43b5205865103558b410
GitHub-Last-Rev: 2ef2023e8c
GitHub-Pull-Request: golang/go#57042
Reviewed-on: https://go-review.googlesource.com/c/go/+/454696
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The user is likely to run other commands that need these libraries
immediately after they are built.
For #57734.
Updates #56889.
Change-Id: I2a1a234e6031d85f017ee692ea1ace8c6e0e7355
Reviewed-on: https://go-review.googlesource.com/c/go/+/452679
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This should help to prevent bugs from unintended use of system tools,
especially the system or bootstrap "go" command.
(Suggested by Austin on CL 452678.)
Updates #31567.
Change-Id: I71809ee30d06eda4b5ff8f90656d4f1a462d35dd
Reviewed-on: https://go-review.googlesource.com/c/go/+/452776
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Unified IR generates uniform IR for "a, b = f()" to be able to insert
implicit conversion expressions, but the result is somewhat more
verbose and trips up the inliner's naive cost metrics.
The hairyVisitor.doNode method was already adjusted to account for
this, but isBigFunc needs the same adjustment.
Fixes#57563.
Change-Id: Ia8d86a6e314ec60190c78f40ace4fb30dadc4413
Reviewed-on: https://go-review.googlesource.com/c/go/+/460395
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Also remove existing special cases that transform "go" into
gorootBinGo, because they make debugging and code-reviews more
difficult: log messages that don't include the full path can mask bugs
like #31567, and the reader of the code has to trace through the
various call chains to verify that the correct "go" is being used.
Instead, we can make the use of the correct "go" command plainly
obvious in the code by using one consistent name for it.
(Prior to this CL, we had three different names for it:
gorootBinGo, "go", and cmdGo. Now we have only one.
Updates #31567.
Change-Id: Ia9ff27e5e800c79af5a4e9f2803c9ea5ccafbf35
Reviewed-on: https://go-review.googlesource.com/c/go/+/452678
Reviewed-by: Michael Matloob <matloob@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
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Sym.Def used to be used for symbol resolution during the
old (pre-types2) typechecker. But since moving to types2-based IR
construction, we haven't really had a need for Sym.Def to ever refer
to anything but the package-scope definition, because types2 handles
symbol resolution for us.
This CL finally removes the Markdcl/Pushdcl/Popdcl functions that have
been a recurring source of issues in the past.
Change-Id: I2b012a0f17203efdd724ebd1e9314bd128cc2d61
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This CL removes a handful of features that were only needed for the
pre-unified frontends.
In particular, Type.Pkg was a hack for iexport so that
go/types.Var.Pkg could be precisely populated for struct fields and
signature parameters by gcimporter, but it's no longer necessary with
the unified export data format because we now write export data
directly from types2-supplied type descriptors.
Several other features (e.g., OrigType, implicit interfaces, type
parameters on signatures) are no longer relevant to the unified
frontend, because it only uses types1 to represent instantiated
generic types.
Updates #57410.
Change-Id: I84fd1da5e0b65d2ab91d244a7bb593821ee916e7
Reviewed-on: https://go-review.googlesource.com/c/go/+/458622
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These were used by the nounified frontend for representing
uninstantiated generic types; however, the unified frontend only needs
types1 to represent instantiated types.
Updates #57410.
Change-Id: Iac417fbf2b86f4e08bd7fdd26ae8ed17395ce833
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This CL removes most of the code specific to the nounified
frontend. To simplify review, it's a strict remove-only CL.
Updates #57410.
Change-Id: Ic3196570aa4286618c1d5e7fd0d0e6601a18195b
Reviewed-on: https://go-review.googlesource.com/c/go/+/458620
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In the types1 universe under the unified frontend, we never need to
worry about type parameter constraints, so we only see pure
interfaces. However, we might still see interfaces that contain union
types, because of interfaces like "interface{ any | int }" (equivalent
to just "any").
We can handle these without needing to actually represent type unions
within types1 by simply mapping any union to "any".
Updates #57410.
Change-Id: I5e4efcf0339edbb01f4035c54fb6fb1f9ddc0c65
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Before this CL, the comment used the case of a recursive generic
function call as an example for uni-directional unification.
However, such cases are now more generally (and correctly) addressed
through renaming of the type parameters.
Change-Id: I69e94f53418e1fb4ca9431aeb27c639c40d19b09
Reviewed-on: https://go-review.googlesource.com/c/go/+/463735
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Doing this allows updates to swig so it can access slices
and strings in a somewhat less-unsafe way.
Change-Id: If2af8f8cf58d2287569dcd7c7ce09728e20b5ff0
Reviewed-on: https://go-review.googlesource.com/c/go/+/463396
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The getrandom syscall was added to NetBSD in version 10.0, see
https://man.netbsd.org/NetBSD-10.0-STABLE/getrandom.2
Change-Id: I2714c1040791f7f4728be8d869058a38cbd93d4d
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This CL marks some darwin assembly functions as NOFRAME to avoid relying
on the implicit amd64 NOFRAME heuristic, where NOSPLIT functions
without stack were also marked as NOFRAME.
Change-Id: I797f3909bcf7f7aad304e4ede820c884231e54f6
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Preserve sensitive headers on a redirect to a different port of the same host.
Fixes#35104
Change-Id: I5ab57c414ce92a70e688ee684b9ff02fb062b3c6
GitHub-Last-Rev: 8d53e71e22
GitHub-Pull-Request: golang/go#54539
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Now that GOEXPERIMENT=nounified is removed, we can assume InlineCall
and HaveInlineBody will always be overridden with the unified
frontend's implementations. Similarly, we can assume expandDecl will
never be called.
This CL changes the code paths into Fatalfs, so subsequent CLs can
remove all the unreachable code.
Updates #57410.
Change-Id: I2a0c3edb32916c30dd63c4dce4f1bd6f18e07468
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This flag forced the compiler to eagerly type check all available
inline function bodies, which presumably was useful in the early days
of implementing inlining support. However, it shouldn't have any
significance with the unified frontend, since the same code paths are
used for constructing normal function bodies as for inlining.
Updates #57410.
Change-Id: I6842cf86bcd0fbf22ac336f2fc0b7b8fe14bccca
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The use of typecheck.Resolve was previously necessary to interoperate
with the non-unified frontend, because it hooked into iimport. It's no
longer necessary with unified IR, where we can just lookup the
".inittask" symbol and access Def directly.
Updates #57410.
Change-Id: I73bdfd53f65988ececd2b777743cd8b591a6db48
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When we're compiling a resultInArg0 op, we need to clobber the
register containing the input value. So we first make a register copy
of the input value. We can then clobber either of the two registers
the value is in and still have the original input value in a register
for future uses.
Before this CL, we always clobbered the original, not the copy.
But that's not always the right decision - if the original is already
in a specific register that it needs to be in later (typically, a
return value register), clobber the copy instead.
This optimization can remove a mov instruction. It saves 1376 bytes
of instructions in cmd/go.
Redo of CL 460656, reverted at CL 463475, with a fix for s390x.
The new code just ensures that the copied value is in a register
which is a valid input register for the instruction.
Change-Id: Id570b8a60a6d2da9090de80a90b6bb0266e9e38a
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runtime·cbctxts has been unused since CL 258938, but it was left over.
Change-Id: I374ad26e668a36994e41f5d17593b33090bdc644
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This CL removes the GOEXPERIMENT=nounified knob, and any conditional
statements that depend on that knob. Further CLs to remove unreachable
code follow this one.
Updates #57410.
Change-Id: I39c147e1a83601c73f8316a001705778fee64a91
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ExampleWithDeadline and ExampleWithTimeout used an arbitrary 1-second
timeout for a “blocked” select case, which could fail if the test
goroutine happens to be descheduled for over a second, or perhaps if
an NTP synchronization happens to jump by a second at just the right
time.
Either case is plausible, especially on a heavily-loaded or slow
machine (as is often the case for builders for unusual ports).
Instead of an arbitrary timeout, use a “ready” channel that is never
actually ready.
Fixes#57594.
Change-Id: I9ff68f50b041a3382e7b267c28c5259e886a9d23
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The 1-second timeout on execution of this test is empirically too
short on some platforms. Rather than trying to tune the timeout, allow
the test to time out on its own (and dump goroutines) if it deadlocks.
Fixes#57993.
Fixes#57994.
Change-Id: I69ee86c75034469e4b4cd391b8dc5616b93468b8
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Since this may add a large number of --export-dynamic-symbol options,
use a response file if the command line gets large.
Fixes#53579
Change-Id: Ic226bf372bf1e177a3dae886d1c48f4ce3569c0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/414654
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This reverts CL 460656
Reason for revert: This breaks s390x.
Change-Id: I8fada14fabc90593b8033ed11188c04963d2da75
Reviewed-on: https://go-review.googlesource.com/c/go/+/463475
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When we're compiling a resultInArg0 op, we need to clobber the
register containing the input value. So we first make a register copy
of the input value. We can then clobber either of the two registers
the value is in and still have the original input value in a register
for future uses.
Before this CL, we always clobbered the original, not the copy.
But that's not always the right decision - if the original is already
in a specific register that it needs to be in later (typically, a
return value register), clobber the copy instead.
This optimization can remove a mov instruction. It saves 1376 bytes
of instructions in cmd/go.
Change-Id: I162870c84b9a180da6715bb24c296a902974fed3
Reviewed-on: https://go-review.googlesource.com/c/go/+/460656
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When calling a c library function, you discover that an error has
occurred, typically by looking at the return value of the function. Only
after that can you use errno to figure out the cause of the error.
Nothing about cgo changes that story -- you still have to look at the
result before checking the error that represents errno. If not you can
get false errors if the function happens to leak a non-zero errno.
Fix testpty to check errors correctly.
Change-Id: Idb95f8dd6a8ed63f653190c2e722e742cf50542b
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This code path is unreachable anyway, and it adds new uses of
Type.Pkg, which shouldn't be used anymore.
Mark Type.Pkg as deprecated while here.
Updates #57410.
Change-Id: I1eec1c8ed99207d58d0ba0c44822bbad29dc64f3
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This also makes path/filepath.Walk more consistent between
Windows and POSIX platforms.
According to
https://pubs.opengroup.org/onlinepubs/9699919799.2013edition/basedefs/V1_chap04.html#tag_04_12
symlinks in a path that includes a trailing slash must be resolved
before a function acts on that path.
POSIX defines an lstat function, whereas the Win32 API does not, so
Go's os.Lstat should follow the (defined) POSIX semantics instead of
doing something arbitrarily different.
CL 134195 added a test for the correct POSIX behavior when os.Lstat is
called on a symlink. However, the test turned out to be broken on Windows,
and when it was fixed (in CL 143578) it was fixed with different Lstat
behavior on Windows than on all other platforms that support symlinks.
In #50807 we are attempting to provide consistent symlink behavior for
cmd/go. This unnecessary platform difference, if left uncorrected,
will make that fix much more difficult.
CL 460595 reworked the implementation of Stat and Lstat on Windows,
and with the new implementation this fix is straightforward.
For #50807.
Updates #27225.
Change-Id: Ia28821aa4aab6cefa021da2d9b803506cdb2621b
Reviewed-on: https://go-review.googlesource.com/c/go/+/463177
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This CL adds the NOFRAME flag to runtime·rt0_go, which should
had been added in CL 459395 but didn't and broke fix windows-amd64-2008.
Change-Id: I4583f2034bf114e1f7aaddef9ba505f53536c3eb
Reviewed-on: https://go-review.googlesource.com/c/go/+/463120
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Update race_windows_amd64.syso to latest tsan (V3) runtime.
This version of the runtime depends on libsynchronization.a, so to
use this syso, you need to also be using a sufficiently up to date
version of GCC (notably GCC 5.1, installed on the Go windows builders
right now, does not include this library).
Updates #48231.
Updates #35006.
Fixes#49761.
Change-Id: Ia1e2b1d8fe7e2c99728150734935a2c522006caa
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The various forkAndExecInChild implementations have comments
explaining that they pre-declare variables to force allocations
to occur before forking, but then later use ":=" declarations
for additional variables.
To make it clearer that those ":=" declarations do not allocate,
we move their declarations up to the predeclared blocks.
For #57208.
Change-Id: Ie8cb577fa7180b51b64d6dc398169053fdf8ea97
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This brings the exported field names on these GOARCHes
in line with the other supported linux platforms.
Fixes#57313.
Change-Id: I2107a7116ba60dc0c0a27f776318e3eb69e51682
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This helps simplify the noise when adding ppc codegen tests. ppc64x
is used in other places to indicate something which runs on either
endian.
This helps cleanup existing codegen tests which are mostly
identical between endian variants.
condmove tests are converted as an example.
Change-Id: I2b2d98a9a1859015f62db38d62d9d5d7593435b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/462895
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Paul Murphy <murp@ibm.com>
Replace deprecated // +build lines by their respective //go:build line
counterpart. Also remove build constraints implied by file name or type.
Change-Id: I8d18cd40071ca28d7654da8f0d22841f43729ca6
Reviewed-on: https://go-review.googlesource.com/c/go/+/460538
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
https://go.dev/cl/460543 stopped using the "expect" parameter in
bootstrapType, but we forgot to actually remove it.
While here, staticcheck correctly points out that we can use the copy
builtin to fill builtinIdToTypeSlice, now that it and idToType are an
array and slice respectively.
Change-Id: I48078415ab9bdd5633cf41f33ab4dc78eb30b48a
Reviewed-on: https://go-review.googlesource.com/c/go/+/462301
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Rob Pike <r@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This has been investigated and explained on the issue tracker.
Fixes#54402.
Change-Id: I4d8b971faa810591983ad028b7db16411f3b3b4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/461456
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
This CL marks non-leaf nosplit assembly functions as NOFRAME to avoid
relying on the implicit amd64 NOFRAME heuristic, where NOSPLIT functions
without stack were also marked as NOFRAME.
Updates #57302
Updates #40044
Change-Id: Ia4d26f8420dcf2b54528969ffbf40a73f1315d61
Reviewed-on: https://go-review.googlesource.com/c/go/+/459395
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This will be generated by go code built for dynamic linking when
built with GOPPC64=power10 in a future change.
Change-Id: I9bd7ca6b2a65c360465e35ef12b10d3fa6d75745
Reviewed-on: https://go-review.googlesource.com/c/go/+/463015
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Archana Ravindar <aravind5@in.ibm.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
