The double suffix doesn't seem to serve any purpose, and we can keep
the old spelling as a backwards compatible alias in cmd/asm.
Change-Id: I3f01fc7249fb093ac1b25bd75c1cb9f39b8f62a9
Reviewed-on: https://go-review.googlesource.com/c/go/+/354700
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
Empirically, it may take more than 3 seconds for minimization to begin.
If that is the case, the "elapsed:" message may start at 4s or higher.
Fixes#48870
Change-Id: I6bb4367b61377454b0af664d80232fdb46e7c245
Reviewed-on: https://go-review.googlesource.com/c/go/+/354794
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
The illumos builder is using a Go 1.18 prerelease toolchain for
bootstrapping, which doesn't have ast.IndexListExpr. But we can
instead check for the "compiler_bootstrap" build tag that's already
used for distinguishing binaries built for toolchain1.
Fixes#48863.
Change-Id: I87b672322eee22a60ab8d0bb3be5f76cffc97545
Reviewed-on: https://go-review.googlesource.com/c/go/+/354695
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
A stack object record may refer to the object's type's GC mask or
GC program (for very large types). For the latter, currently the GC
program symbol is named "type..gcprog.XXX" which is then laid out
along with type symbols at link time. When relro is used, the type
symbols end up in a different section.
As we now use relative addressing for stack object records to refer
to GC masks or GC programs, it is important that it is laid out in
the rodata section (not rodata.rel.ro). Move GC program symbols to
be along with GC masks, as they are similar and accessed the same
way. They don't have relocations so they don't need to be laid to a
relro section.
This fixes flaky failures like
https://build.golang.org/log/3bdbaaf786ec831b4393a64a959d2130edb5e050
Change-Id: I97aeac1234869da5b0f3a73a3010513d6a3156c6
Reviewed-on: https://go-review.googlesource.com/c/go/+/354793
Trust: Cherry Mui <cherryyz@google.com>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
The fix for #48807 in CL 354429 forgot that we also need to fix
the softfloat implementation.
Update #48807
Change-Id: I596fb4e14e78145d1ad43c130b2cc5122b73655c
Reviewed-on: https://go-review.googlesource.com/c/go/+/354613
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
See also CL 354693.
Change-Id: Id7579c5f7d486652a5b53b29663a6573a493121f
Reviewed-on: https://go-review.googlesource.com/c/go/+/354694
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is a port of CL 354643 from go/types to types2 with adjustments:
- use of syntax rather than go/ast package as needed
- adjustments due to the different code for type parameter declarations
- rename of Checker.rparamMap to Checker.recvTParamMap, which seems clearer
Change-Id: I5311a0c05a13c6b87ea1422b250b90c3d05c5dce
Reviewed-on: https://go-review.googlesource.com/c/go/+/354693
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
For this unusual case, where a constraint specifies exactly one type, we
can have a COMPLIT expression with a type that is/has typeparams.
Therefore, we add code to delay transformCompLit for generic functions.
We also need to break out transformAddr (which corresponds to tcAddr),
and added code for delaying it as well. Also, we now need to export
generic functions containing untransformed OCOMPLIT and OKEY nodes, so
added support for that in iexport.go/iimport.go. Untransformed OKEY
nodes include an ir.Ident/ONONAME which we can now export.
Had to adjust some code/asserts in transformCompLit(), since we may now
be transforming an OCOMPLIT from an imported generic function (i.e. from
a non-local package).
Fixes#48537
Change-Id: I09e1b3bd08b4e013c0b098b8a25d082efa1fef51
Reviewed-on: https://go-review.googlesource.com/c/go/+/354354
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
We've decided to leave TParams on FuncType, and type list syntax is
no longer part of the proposal.
Change-Id: Id34f6495a358d76994df331384a4b93487275c4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/354751
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
ParseDuration should handle minimum int64 (-1<<63) nanosecond
since type Duration is alias of int64
name old time/op new time/op delta
ParseDuration 91.4ns ± 0% 86.4ns ± 1% -5.49% (p=0.000 n=9+8)
Fixes: #48629
Change-Id: I81b7035b25cefb4c1e5b7801c20f2d335e29358a
Reviewed-on: https://go-review.googlesource.com/c/go/+/352269
Trust: Meng Zhuo <mzh@golangcn.org>
Run-TryBot: Meng Zhuo <mzh@golangcn.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Receiver type parameters are the only type expressions allowed to be
blank. Previously this was handled by substitution of synthetic
non-blank names in the receiver type expression, but that introduced
problems related to AST mangling: the scope had extra elements,
Object.Name() was inaccurate, and synthetic nodes were recorded in
types.Info.
Fix this instead by recording a map of *ast.Ident->*TypeParam on the
Checker, which is read in Checker.ident to resolve blank identifiers
denoting receiver type parameters.
Change-Id: I6a7a86b823409f54778c0f141e8bd269a2cc85d9
Reviewed-on: https://go-review.googlesource.com/c/go/+/354643
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
PNG images can be paletted, where each pixel value (a uint8) indexes a
slice of colors. In terms of wire format, the PLTE chunk explicitly
contains the palette length. However, in practice, some arguably
malformed images contain pixel values greater than or equal to the
explicit PLTE length.
Go's image/png decoder accomodates such images by lengthening the
decoded image's palette if the implicit maximum is larger than the
explicit maximum. This was already done, prior to this commit, by the
"if len(paletted.Palette) <= int(idx)" lines in decoder.readImagePass.
Separately, PNG images can also be interlaced, where the final image is
the result of merging multiple partial images, also called passes. Prior
to this commit, we applied the palette lengthening to the pass images
but not the final image. This commit fixes that.
Fixes#48612
Change-Id: I77606538cc9a504fbd726071756ebcd10c9da73f
Reviewed-on: https://go-review.googlesource.com/c/go/+/354709
Trust: Nigel Tao <nigeltao@golang.org>
Reviewed-by: Andrew Gerrand <adg@golang.org>
This is a port of CL 354690 from types2 to go/types.
Change-Id: I50e7297a67e37d261335260e285b9cb1c0d2a62d
Reviewed-on: https://go-review.googlesource.com/c/go/+/354691
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
The "fix" (CL 352832) for #48619 was incorrect and broke
the unification algorithm in some cases (e.g., #48695).
This CL reverts the changes made by CL 352832 to unify.go,
and comments out code in corresponding tests.
As a result, #48695 will be fixed, and we will re-open #48619.
Fixes#48695.
For #48619.
For #48656.
Change-Id: I91bc492062dbcc8dae7626f6b33f6dfabf48bcb8
Reviewed-on: https://go-review.googlesource.com/c/go/+/354690
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
When we have multiple text sections, we need to mark holes between
the sections in the functab. A hole is marked with an entry with
the end PC of the previous section. As we now use offsets instead
of (relocated) PCs, the end offset of a section may be the same of
the start of the next one. Distinguish it by using the end address
-1.
For #48837.
Change-Id: I121aac53b32a869378632cf151cb1b6f98ad3089
Reviewed-on: https://go-review.googlesource.com/c/go/+/354636
Trust: Cherry Mui <cherryyz@google.com>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
As the func table contains the end marker of the text section, we
sometimes need to get that address from an offset. Currently
textAddr doesn't handle that address, as it is not within any
text section. Instead of letting the callers not call textAddr
with the end offset, just handle it more elegantly in textAddr.
For #48837.
Change-Id: I6e97e455f6cb66e9680a7aac6152ba6f4cda2e12
Reviewed-on: https://go-review.googlesource.com/c/go/+/354635
Trust: Cherry Mui <cherryyz@google.com>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Like with -benchtime=1ns, if we find that the "discovery" round (run1)
has already crossed the -benchtime threshold, we skip running more
iterations.
Fixes#32051
Change-Id: I76aaef2ba521ba8ad6bbde2b14977e191aada5e4
Reviewed-on: https://go-review.googlesource.com/c/go/+/331089
Trust: Caleb Spare <cespare@gmail.com>
Run-TryBot: Caleb Spare <cespare@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Change to using types.(*Type).LinkString() for printing names of types
in function/method instantiations. (e.g. f[int] or Value[p.Myint].Set())
LinkString already generates a unique string description for t, using
package paths, except that it uses "" for the local package path. The ""
will be expanded in the linker, so the names in the executable will have
full package paths everywhere and de-duplication of function/method
instantiations will work properly. We do need to add an explicit
substitution of "" in ReadImports() for function/method names. We
previously were using NameString(), which doesn't use full package
paths, so is not fully unique.
We had also discussed that we would prefer to minimize spaces in
function/method instantiation names. So, I changed LinkString() to
eliminate all unneeded spaces. In the one case where we need a
separator, which is between field names and types, we use a "#" instead
of a space.
This change has the advantage of eliminating spaces in some existing
non-generic function name - mainly .type.eq functions for anonymous
types (e.g. "type..eq.struct { runtime.gList; runtime.n int32 }") shows
up in a hello-world executable (as Cherry pointed out).
We do not need an analogous function for types2 right now, since we
create all instantiations using types1 types. In the one case where we
need to create an instantiation during types2-to-types1 translation, we
convert the types to types1 first (see (*irgen).instTypeName2).
Change-Id: Iac4748fa0d0d6f89af59bd51076266986daee945
Reviewed-on: https://go-review.googlesource.com/c/go/+/353609
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Previously, when fuzzing for a period of time, the
command line output would look something like this:
fuzz: minimizing 34995-byte crash input...
fuzz: elapsed: 3s, execs: 13821 (4604/sec), new interesting: 0 (total: 1)
fuzz: elapsed: 6s, execs: 13821 (2303/sec), new interesting: 0 (total: 1)
fuzz: elapsed: 9s, execs: 13821 (1535/sec), new interesting: 0 (total: 1)
--- FAIL: FuzzFoo (9.05s)
This is the same output it has while fuzzing, so if
minimization runs for a long time (default allows 1
minute), then it looks like minimization is hanging.
It's also confusing that the execs/sec would continually
decrease.
Now, when minimization is running, the command line
output will look something like this:
fuzz: minimizing 34995-byte crash input...
fuzz: elapsed: 3s, minimizing
fuzz: elapsed: 6s, minimizing
fuzz: elapsed: 9s, minimizing
fuzz: elapsed: 9s, minimizing
--- FAIL: FuzzFoo (9.05s)
The final "fuzz: elapsed: 6s, minimizing" could be
printed twice because we always print one final log
to the command line before we exit.
Updates #48820
Change-Id: Ie5b9fde48b8d4e36e13a81ae50a6d69bf4d0dbe3
Reviewed-on: https://go-review.googlesource.com/c/go/+/354371
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
CL 315281 changed the os package use wait6 on netbsd. This seems to be
causing frequent test failures as reported in #48789. Revert that change
using wait6 on netbsd for now.
Updates #13987
Updates #16028
For #48789
Change-Id: Ieddffc65611c7f449971eaa8ed6f4299a5f742c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/354249
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Trust: Bryan C. Mills <bcmills@google.com>
Trust: Benny Siegert <bsiegert@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The existing implementation lacks consideration of running test on a
machine which has ipv6 address but no ipv4 address. Use net.IP.IsLoopback
and net.IP.IsUnspecified instead of hardcoded addresses.
Fixes: #48575
This PR will be imported into Gerrit with the title and first
comment (this text) used to generate the subject and body of
the Gerrit change.
Change-Id: I9c3c26d2ba13c7a24065751b59a1e002098ed654
GitHub-Last-Rev: fc45adbf7b
GitHub-Pull-Request: golang/go#48850
Reviewed-on: https://go-review.googlesource.com/c/go/+/354609
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Jay Conrod <jayconrod@google.com>
This test is currently failing in the longtest builders.
I do not know how or why the builders are adding the -G=0 parameter.
Updates #48784
Change-Id: I62248d3fbc47567a8c73b4868a2d4aeb0bc47bc3
Reviewed-on: https://go-review.googlesource.com/c/go/+/354631
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
On Wasm, wasm_exec.js puts command line arguments at the beginning
of the linear memory (following the "zero page"). Currently there
is no limit for this, and a very long command line can overwrite
the program's data section. Prevent this by limiting the command
line to 4096 bytes, and in the linker ensuring the data section
starts at a high enough address (8192).
(Arguably our address assignment on Wasm is a bit confusing. This
is the minimum fix I can come up with.)
Thanks to Ben Lubar for reporting this issue.
Fixes#48797
Fixes CVE-2021-38297
Change-Id: I0f50fbb2a5b6d0d047e3c134a88988d9133e4ab3
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/1205933
Reviewed-by: Roland Shoemaker <bracewell@google.com>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-on: https://go-review.googlesource.com/c/go/+/354571
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Trust: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
The old way of implementing it, float32(float64(x)), involves 2 roundings
which can cause accuracy errors in some strange cases. Implement a runtime
version of [u]int64tofloat32 which only does one rounding.
Fixes#48807
Change-Id: Ie580be480bee4f3a479e58ef8dce23032f231704
Reviewed-on: https://go-review.googlesource.com/c/go/+/354429
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Allows cgo to work with generics.
Updates #47781.
Change-Id: Id1a5d1a0a8193c5b157e3e671b1490d687d10384
Reviewed-on: https://go-review.googlesource.com/c/go/+/353882
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The CL 349613 causes this problem.
In fact, we want to use the outer i to find m.List[i],
but the newly created index variable i in the nearest
for range shadow the outer i.
Fixes#48838.
Change-Id: I10f0bd985340f9443eefaadda6fc56e4e7e9a10c
Reviewed-on: https://go-review.googlesource.com/c/go/+/354549
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
This is port of CL 354049 for types2 to go/type.
The change is identical, but for some tweaks to the error message/position
in tests, since when go/types reports the exact operation "cannot convert"
instead of the general "invalid operation" like types2.
Updates #48784
Change-Id: I3e99f2721501d23187fd0a8970eb1de28e0c41d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/354050
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
In case of an invalid untyped nil conversion, the compiler's original
type checker leaves it to the caller to report a suitable error message.
But types2 does not, it always reports the invalid conversion.
CL 328053 made types2 report a better error message, and match the
original compiler behavior. But it ignored the case of untyped nil.
This CL adds that missing case, by checking whether the two operands can
be mixed when untyped nil is present.
Fixes#48784
Change-Id: Idc7d86eb0245aa18ca428e278f4416d6b3679058
Reviewed-on: https://go-review.googlesource.com/c/go/+/354049
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
This is a port of CL 354432 from types2 to go/types
with minor adjustments:
- an error message has a different position
- the constraint literals are wrapped in interfaces
because the interface-free notation has not been
ported yet
Change-Id: I167094b57b39027566f2b7ce3aa97a071bae4da5
Reviewed-on: https://go-review.googlesource.com/c/go/+/354489
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
For now, the underlying types of the the argument types' constraints
must be a single type that is a slice (the source operand may also
be a string).
Change-Id: I9e705e3349c9242f126b9c3e0af65e9ffb25fe6e
Reviewed-on: https://go-review.googlesource.com/c/go/+/354432
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The (*http.Cookie).String method used by SetCookie will silently discard
or sanitize any fields it deems invalid, making it difficult to tell
whether a cookie will be sent as expected.
This change introduces a new (*http.Cookie).Valid method which may be
used to check if any cookie fields will be discarded or sanitized prior
to calling (*http.Cookie).String.
Fixes#46370
Change-Id: I2db80078de190d267a9c675a9717c8be8acc8704
Reviewed-on: https://go-review.googlesource.com/c/go/+/338590
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
Trust: Damien Neil <dneil@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
I've noticed for a while that there is some duplicated and some useful
information being put out in -W=3 mode after the comment marker (besides
the position).
dumpNodeHeader puts out a comment marker '#' before putting out the
position of a node (which is for almost all nodes). Therefore, we shouldn't
print out anything on the same line after calling dumpNodeHeader().
But we happen to be putting out a duplicate type of the node in some
cases. Also, we put out the Sym() associate with the node after
dumpNodeHeader(). So, I got rid of the duplicate type print-out, and moved
the print-out of n.Sym() to be inside dumpNodeHeader() before the
position information. Also, moved the tc flag to be right after the type
information, which seems like it makes more sense.
Change-Id: I05210fbf9f3b2d8e3b73fc0ceab26a7bce5dc104
Reviewed-on: https://go-review.googlesource.com/c/go/+/354355
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>
TestTicker is sensitive to overloaded or slow systems, where a 20ms
ticker running for 10 ticks has a total run time out of the range
[110ms, 290ms]. To counter this flakiness, it tries five times to
get a successful result. This is insufficient--an overloaded test
machine can introduce more than 100ms of delay across the test.
Reduce the five attempts to two, but use a 1s ticker for 8 ticks
in the second attempt.
Updates #46474.
Updates #35692.
Change-Id: Ibd5187b00ccceeb981b652f2af9a1c3766357b78
Reviewed-on: https://go-review.googlesource.com/c/go/+/339892
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Use typecheck.Conv; it does the same thing.
Change-Id: I6bf27b8e929f8016ffc8350931c8320e36584a3d
Reviewed-on: https://go-review.googlesource.com/c/go/+/354350
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
The tree has package main files scattered around
in it for the purposes of running go generate.
They're all marked "// +build ignore",
which gets special handling in TestDependencies.
It would be nice to be able to use other build tags,
such as "generate", as suggested by the go generate
design doc. Plus the build tag syntax is changing.
This change skips all "package main" files.
By definition these aren't importable,
so they can't contribute to the dependency tree.
We can't quite eliminate the "// +build ignore"
check, as it is used by packages runtime and syscall.
But it's still a step in the right direction.
Change-Id: Ib9449acfdba75f570b87a4200afe944910d76222
Reviewed-on: https://go-review.googlesource.com/c/go/+/339592
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Accept a uint32 instead of a uintptr to make call sites simpler.
Do less work in the common case in which len(textsectmap) == 1.
Change-Id: Idd6cdc3fdad7a9356864c83790463b5d3000171b
Reviewed-on: https://go-review.googlesource.com/c/go/+/354132
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Somehow CL 353390 managed to update the vendored code to d2e5035098b3,
but not the go.mod and other version references. Fix.
Change-Id: Ic265c10f7bd7ec982671b46c5d9ae50636a13309
Reviewed-on: https://go-review.googlesource.com/c/go/+/354391
Trust: Damien Neil <dneil@google.com>
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
The encoding/binary little- and big-endian load and store routines are
frequently used in performance sensitive code. They look fairly complex
to the inliner. Though the routines themselves can be inlined,
code using them typically cannot be.
Yet they typically compile down to an instruction or two
on architectures that support merging such loads.
This change teaches the inliner to treat calls to these methods as cheap,
so that code using them will be more inlineable.
It'd be better to teach the inliner that this pattern of code is cheap,
rather than these particular methods. However, that is difficult to do
robustly when working with the IR representation. And the broader project
of which that would be a part, namely to model the rest of the compiler
in the inliner, is probably a non-starter. By way of contrast, imperfect
though it is, this change is an easy, cheap, and useful heuristic.
If/when we base inlining decisions on more accurate information obtained
later in the compilation process, or on PGO/FGO, we can remove this
and other such heuristics.
Newly inlineable functions in the standard library:
crypto/cipher.gcmInc32
crypto/sha512.appendUint64
crypto/md5.appendUint64
crypto/sha1.appendUint64
crypto/sha256.appendUint64
vendor/golang.org/x/crypto/poly1305.initialize
encoding/gob.(*encoderState).encodeUint
vendor/golang.org/x/text/unicode/norm.buildRecompMap
net/http.(*http2SettingsFrame).Setting
net/http.http2parseGoAwayFrame
net/http.http2parseWindowUpdateFrame
Benchmark impact for encoding/gob (the only package I measured):
name old time/op new time/op delta
EndToEndPipe-8 2.25µs ± 1% 2.21µs ± 3% -1.79% (p=0.000 n=28+27)
EndToEndByteBuffer-8 93.3ns ± 5% 94.2ns ± 5% ~ (p=0.174 n=30+30)
EndToEndSliceByteBuffer-8 10.5µs ± 1% 10.6µs ± 1% +0.87% (p=0.000 n=30+30)
EncodeComplex128Slice-8 1.81µs ± 0% 1.75µs ± 1% -3.23% (p=0.000 n=28+30)
EncodeFloat64Slice-8 900ns ± 1% 847ns ± 0% -5.91% (p=0.000 n=29+28)
EncodeInt32Slice-8 1.02µs ± 0% 0.90µs ± 0% -11.82% (p=0.000 n=28+26)
EncodeStringSlice-8 1.16µs ± 1% 1.04µs ± 1% -10.20% (p=0.000 n=29+26)
EncodeInterfaceSlice-8 28.7µs ± 3% 29.2µs ± 6% ~ (p=0.067 n=29+30)
DecodeComplex128Slice-8 7.98µs ± 1% 7.96µs ± 1% -0.27% (p=0.017 n=30+30)
DecodeFloat64Slice-8 4.33µs ± 1% 4.34µs ± 1% +0.24% (p=0.022 n=30+29)
DecodeInt32Slice-8 4.18µs ± 1% 4.18µs ± 0% ~ (p=0.074 n=30+28)
DecodeStringSlice-8 13.2µs ± 1% 13.1µs ± 1% -0.64% (p=0.000 n=28+28)
DecodeStringsSlice-8 31.9µs ± 1% 31.8µs ± 1% -0.34% (p=0.001 n=30+30)
DecodeBytesSlice-8 8.88µs ± 1% 8.84µs ± 1% -0.48% (p=0.000 n=30+30)
DecodeInterfaceSlice-8 64.1µs ± 1% 64.2µs ± 1% ~ (p=0.173 n=30+28)
DecodeMap-8 74.3µs ± 0% 74.2µs ± 0% ~ (p=0.131 n=29+30)
Fixes#42958
Change-Id: Ie048b8976fb403d8bcc72ac6bde4b33e133e2a47
Reviewed-on: https://go-review.googlesource.com/c/go/+/349931
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
They're only used in a single place.
Instead of calculating the end every time,
calculate it in the linker.
It'd be nice to recalculate baseaddr-vaddr,
but that generates relocations that are too large.
While we're here, remove some pointless uintptr -> uintptr conversions.
Change-Id: I91758f9bff11b365bc3a63fee172dbdc3d90b966
Reviewed-on: https://go-review.googlesource.com/c/go/+/354089
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Tests that require instrumentation must be in
a test script which only runs for architectures
where coverage is supported.
Change-Id: Ia56b1cef1071f848c9dce8c87597207937fdb6c9
Reviewed-on: https://go-review.googlesource.com/c/go/+/354372
Trust: Katie Hockman <katie@golang.org>
Run-TryBot: Katie Hockman <katie@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
