This took me a while to figure out. Save the next person some trouble.
Change-Id: Ifab2d426f67c21b08ef225c79125805a9008e578
Reviewed-on: https://go-review.googlesource.com/c/go/+/309336
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Fixes#45534
Change-Id: I9855607e845951f26ab85cb179ec6dea40d92156
Reviewed-on: https://go-review.googlesource.com/c/go/+/309574
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Both OpArgXXXReg and LoweredGetClosurePtr must come very early,
because they carry registers that are technically live on entry.
But no need to impose ordering requirement between them.
Change-Id: Iee1db6239a75e5b381e0ad25ba5503169333217b
Reviewed-on: https://go-review.googlesource.com/c/go/+/309629
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
When using the GCC thread sanitizer, it links in additional
code which uses TLS, which causes us to exceed the range of
the 16 bit TLS relocation used by statically compiled go
code.
Rewrite objabi.R_POWER_TLS_LE to handle 32b offsets when
linking internally or externally into an ELF binary. The
elf relocation translation is changed to generate a pair
of R_PPC64_TPREL16_HA/LO relocations instead of a single
R_PPC64_TPREL16.
Likewise, updating the above exposed some behavioral differences
in gnu ld which can rewrite TLS sequences. It expects the
sequence to generate a valid TLS address, not offset. This was
exposed when compiling PIC code. The proper fix is to generate
the full TLS address in the destination register of the
"MOVD tlsaddr, $Rx" pseudo-op. This removes the need to insert
special objabi.R_POWER_TLS relocations elsewhere.
Unfortunately, XCOFF (used by aix) doesn't appear to support 32
bit offsets, so we rewrite this back into a 16b relocation when
externally linking a static binary.
Fixes#45040
Change-Id: I1ee9afd0b427cd79888032aa1f60d3e265073e1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/302209
Run-TryBot: Paul Murphy <murp@ibm.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
The object representing a module directive may have a "Deprecated"
field but not a "Version" field. Other objects representing module
versions have "Path" and "Version" fields but not "Deprecated".
For #40357
Change-Id: Iad8063dfa6f7ceea22981a8a8f99e65fa3b7ffa0
Reviewed-on: https://go-review.googlesource.com/c/go/+/309337
Trust: Jay Conrod <jayconrod@google.com>
Run-TryBot: Jay Conrod <jayconrod@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Before register ABI, we always pass argument in memory, and the
compiler chooses interface conversion functions solely based on
the memory layout. As long as the two types have identical memory
layout, it is fine to mix and match, e.g. convT64 takes a uint64
argument, but it can be used for things like float64 or
struct { x [4]struct{}; y int64 }.
With register ABI, those types may be passed differently, e.g.
uint64 is passed in an integer register, float64 is passed in a
floating point register, the struct above is passed in memory.
I made a few attempts in the previous CLs to try to choose the
right function based on the argument type, but none of them is
really correct.
Instead, this CL changes it to always pass the argument in the
same type the runtime expects, and do conversion before the call
in the compiler. The conversion can be no-op (e.g. a named type
to its underlying type), direct (e.g. int64 to uint64), or
through memory (e.g. *(*uint64)(unsafe.Pointer(&arg))). This way,
the front end does not need to know the ABI. (It only needs to
know how to convert types, and it already does.)
TODO: do something similar for map functions.
Change-Id: I33fc780a47c3f332b765e09b5e527f52ea1d6b5c
Reviewed-on: https://go-review.googlesource.com/c/go/+/309029
Trust: Cherry Zhang <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
The existing implementation calls os.Chdir expecting the call not to
succeed. This change restores the original working directory in the
case that the call does succeed.
Fixes#45407
Change-Id: I61c57f6858b9a9058226e45e24276c7af8913048
Reviewed-on: https://go-review.googlesource.com/c/go/+/308849
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>
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>
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>
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#44971Fixes#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>
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>
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>
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>
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>
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>
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>
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>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Andy Pan <panjf2000@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
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>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
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>
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>
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>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: David Chase <drchase@google.com>
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>
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Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
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>
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>
Run-TryBot: Julie Qiu <julie@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
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.
Fixesgolang/go#43380
Change-Id: Ibbc947eb3ae08a7ba81f13f03af67c8745b5c69f
Reviewed-on: https://go-review.googlesource.com/c/go/+/279440
Run-TryBot: Hajime Hoshi <hajimehoshi@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Hajime Hoshi <hajimehoshi@gmail.com>
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Reviewed-by: Bryan C. Mills <bcmills@google.com>
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>
Run-TryBot: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
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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Reviewed-by: Ian Lance Taylor <iant@golang.org>
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>
Run-TryBot: Keith Randall <khr@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
TryBot-Result: Go Bot <gobot@golang.org>
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
Trust: Austin Clements <austin@google.com>
Run-TryBot: Austin Clements <austin@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
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
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
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>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
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>
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
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
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
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
For #42076Fixes#45451
Change-Id: I69646226d3480d5403205412ddd13c0cfc2c8a53
Reviewed-on: https://go-review.googlesource.com/c/go/+/308970
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
