- 19 Sep, 2019 4 commits
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Tobias Klauser authored
TestAmbientCapsUserns also needs to be skipped, e.g. in case the test is run inside a chroot. Updates #34015 Change-Id: I53913432fe9408217edfe64619adbfd911a51a7a Reviewed-on: https://go-review.googlesource.com/c/go/+/196500 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> Reviewed-by:
Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Jason A. Donenfeld authored
Windows type PBOOL is a pointer to a 4 byte value, where 0 means false and not-0 means true. That means we should use uint32 here, not bool, since Go bools can be 1 byte. Since a *bool is never a "real" valid Windows type, converting on both in and out is probably sufficient, since *bool shouldn't ever be used as something with significance for its particular address. Updates: #34364 Change-Id: I4c1b91cd9a39d91e23dae6f894b9a49f7fba2c0a Reviewed-on: https://go-review.googlesource.com/c/go/+/196122 Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Alex Brainman <alex.brainman@gmail.com>
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Gert Cuykens authored
Currently there is no way for go doc to output a clean one-line symbol representation of types, functions, vars and consts without documentation lines or other text lines added. For example `go doc fmt` has a huge introduction so if you pass that to grep or fzf to search a symbol let say scan `go doc fmt | grep scan` you get way to many false positives. Added a `-short` flag to be able to do `go doc -short fmt | grep scan` instead which will result in just the symbols you are looking for. func Fscan(r io.Reader, a ...interface{}) (n int, err error) func Fscanf(r io.Reader, format string, a ...interface{}) (n int, err error) func Fscanln(r io.Reader, a ...interface{}) (n int, err error) func Sscan(str string, a ...interface{}) (n int, err error) func Sscanf(str string, format string, a ...interface{}) (n int, err error) func Sscanln(str string, a ...interface{}) (n int, err error) Fixes #32597 Change-Id: I77a73838adc512c8d1490f5a82075de6b0462a31 Reviewed-on: https://go-review.googlesource.com/c/go/+/184017 Run-TryBot: Andrew Bonventre <andybons@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Andrew Bonventre <andybons@golang.org>
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Andrew authored
This was in response to a post-merge review comment in golang.org/cl/185537 Change-Id: I866b3882c8e83bf1fef60115cff5d1c6a9863f09 Reviewed-on: https://go-review.googlesource.com/c/go/+/186319Reviewed-by:
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- 18 Sep, 2019 24 commits
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Bryan C. Mills authored
When walking filesystem paths to locate packages, we normally prune out subdirectories with names beginning with ".", "_", or equal to "testdata". However, we should not prune out such a directory if it is at or above the module root, since its name is not part of the package path. Fixes #28481 Updates #27852 Change-Id: Ice82b1f908afaab50f5592f6c38ca6a0fe911edf Reviewed-on: https://go-review.googlesource.com/c/go/+/196297 Run-TryBot: Bryan C. Mills <bcmills@google.com> Reviewed-by:
Daniel Martí <mvdan@mvdan.cc> Reviewed-by:
Jay Conrod <jayconrod@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Ariel Mashraki authored
Change-Id: I1ab0b5f713581b5f497878f222fa4ba3998a0ccd Reviewed-on: https://go-review.googlesource.com/c/go/+/196179Reviewed-by:
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fanzha02 authored
The current msanwrite() segfaults during libpreinit when built with -msan on arm64. The cause is msancall() in runtime/msan_arm64.s called by msanwrite() assumes that it is always called with a valid g, leading to a segfult. This CL adds a check for nil g in msancall(). Fixes #34338 Change-Id: If4ad7e37556cd1d99346c1a7b4852651d1e4e4aa Reviewed-on: https://go-review.googlesource.com/c/go/+/196157Reviewed-by:
Cherry Zhang <cherryyz@google.com> Reviewed-by:
Ian Lance Taylor <iant@golang.org> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Ian Lance Taylor authored
Fixes #34358 Change-Id: I3022ac88e1ad595dc72c0063852b8d4a1ec3f0ba Reviewed-on: https://go-review.googlesource.com/c/go/+/196120 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Bryan C. Mills <bcmills@google.com>
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Liz Rice authored
Since I first started on this CL, most of the methods have had examples added by other folks, so this is now one new example, and additions to two existing examples for extra clarity. The issue has a comment about not necessarily having examples for all methods, but I recall finding this package pretty confusing when I first used it, and having concrete examples would have really helped me navigate all the different options. There are more String methods with examples now, but I think seeing how the byte-slice methods work could also be helpful to explain the differences. Updates #21450 Change-Id: I27b4eeb634fb8ab59f791c0961cce79a67889826 Reviewed-on: https://go-review.googlesource.com/c/go/+/120145Reviewed-by:
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Jean de Klerk authored
Currently, if you call various reflect methods you might get a panic with a message like, "reflect: Field of non-struct type". Sometimes it's easy to grok what's going on, but other times you need to laboriously go perform reflect.ValueOf(myType).Kind(). This CL just adds that detail to the error message, saving debuggers the extra step and making the error message more clear. Change-Id: I7e0c211a3001e6b217b828cbcf50518080b5cb1e Reviewed-on: https://go-review.googlesource.com/c/go/+/183097Reviewed-by:
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Daniel Martí authored
'go tool trace' pointed at an obvious inefficiency; roughly the first fifth of the program's life was CPU-heavy and making use of only one CPU core at a time. This was due to genOp being run before genLower. We did make genLower use goroutines to parallelize the work between architectures, but we didn't make genOp run in parallel too. Do that. To avoid having two layers of goroutines, simply fire off all goroutines from the main function, and inline genLower, since it now becomes just two lines of code. Overall, this shaves another ~300ms from 'go run *.go' on my laptop. name old time/op new time/op delta Rulegen 2.04s ± 2% 1.76s ± 2% -13.93% (p=0.008 n=5+5) name old user-time/op new user-time/op delta Rulegen 9.04s ± 1% 9.25s ± 1% +2.37% (p=0.008 n=5+5) name old sys-time/op new sys-time/op delta Rulegen 235ms ±14% 245ms ±16% ~ (p=0.690 n=5+5) name old peak-RSS-bytes new peak-RSS-bytes delta Rulegen 179MB ± 1% 190MB ± 2% +6.21% (p=0.008 n=5+5) Change-Id: I057e074c592afe06c831b03ca447fba12005e6f6 Reviewed-on: https://go-review.googlesource.com/c/go/+/196177 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Egon Elbre authored
Fixes #33185 Change-Id: I0adcffa5d1c9e55ae52309c59f961b0710166098 Reviewed-on: https://go-review.googlesource.com/c/go/+/187921Reviewed-by:
Sameer Ajmani <sameer@golang.org> Run-TryBot: Sameer Ajmani <sameer@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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Austin Clements authored
Currently, the line table reader keeps the file name table internal. However, there are various attributes like AttrDeclFile and AttrCallFile whose value is an index into this table. Hence, in order to interpret these attributes, we need access to the file name table. This CL adds a method to LineReader that exposes the file table of the current compilation unit in order to allow consumers to interpret attributes that index into this table. Change-Id: I6b64b815f23b3b0695036ddabe1a67c3954867dd Reviewed-on: https://go-review.googlesource.com/c/go/+/192699 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Than McIntosh <thanm@google.com> Reviewed-by:
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Austin Clements authored
Currently, dwarf.Reader exposes the current compilation unit's address size, but doesn't expose its byte order. Both are important for decoding many attributes. For example, location descriptions include addresses that are encoded in native form for the CU. This CL exposes the byte order of the compilation unit in the same way we already expose its address size, which makes it possible to decode attributes containing native addresses. Change-Id: I92f156818fe92b049d1dfc1613816bb1689cfadf Reviewed-on: https://go-review.googlesource.com/c/go/+/192698 Run-TryBot: Austin Clements <austin@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Tom Thorogood authored
CL 140357 caused HTTP/2 connections to be put in the idle pool, but failed to properly guard the trace.GotConn call in getConn. dialConn returns a minimal persistConn with conn == nil for HTTP/2 connections. This persistConn was then returned from queueForIdleConn and caused the httptrace.GotConnInfo passed into GotConn to have a nil Conn field. HTTP/2 connections call GotConn themselves so leave it for HTTP/2 to call GotConn as is done directly below. Fixes #34282 Change-Id: If54bfaf6edb14f5391463f908efbef5bb8a5d78e GitHub-Last-Rev: 2b7d66a1ce66b4424c4d0fca2b8e8b547d874136 GitHub-Pull-Request: golang/go#34283 Reviewed-on: https://go-review.googlesource.com/c/go/+/195237Reviewed-by:
Michael Fraenkel <michael.fraenkel@gmail.com> Reviewed-by:
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Than McIntosh authored
Fix bug in previous CL 171768 -- with Go 1.13 the proper entry point to call is runtime.setmodinfo, not runtime..z2fdebug.setmodinfo (this changed when we moved from 1.12). [ Unclear why trybots and runs of all.bash didn't catch this, but hand testing made it apparent. ] Updates #30344. Change-Id: I91f47bd0c279ad2d84875051be582818b13735b6 Reviewed-on: https://go-review.googlesource.com/c/go/+/196237 Run-TryBot: Than McIntosh <thanm@google.com> Reviewed-by:
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Daniel Martí authored
I noticed lots of trailing whitespace in one of cmd/trace's HTML files. While at it, remove a few others from still-maintained files. Leave old documents alone, such as doc/devel/weekly.html. Change-Id: I7de7bbb6dd3fe6403bbb1f1178a8d3640c1e537b Reviewed-on: https://go-review.googlesource.com/c/go/+/196178 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Jeremy Faller authored
RELNOTE=This change adds an underscore to all Go symbols in darwin, and the behavior might be confusing to users of tools like "nm", etc. Fixes #33808 Change-Id: I1849e6618c81215cb9bfa62b678f6f389cd009d5 Reviewed-on: https://go-review.googlesource.com/c/go/+/196217 Run-TryBot: Jeremy Faller <jeremy@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Than McIntosh authored
Use a different recipe for capturing debug modinfo if we're compiling with the gccgo toolchain, to avoid applying a go:linkname directive to a variable (not supported by gccgo). Fixes #30344. Change-Id: I9ce3d42c3bbb809fd68b140f56f9bbe3406c351b Reviewed-on: https://go-review.googlesource.com/c/go/+/171768Reviewed-by:
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Lynn Boger authored
This cleans up the isel code generation in ssa for ppc64x. Current there is no isel op and the isel code is only generated from pseudo ops in ppc64/ssa.go, and only using operands with values 0 or 1. When the isel is generated, there is always a load of 1 into the temp register before it. This change implements the isel op so it can be used in PPC64.rules, and can recognize operand values other than 0 or 1. This also eliminates the forced load of 1, so it will be loaded only if needed. This will make the isel code generation consistent with other ops, and allow future rule changes that can take advantage of having a more general purpose isel rule. Change-Id: I363e1dbd3f7f5dfecb53187ad51cce409a8d1f8d Reviewed-on: https://go-review.googlesource.com/c/go/+/195057 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Carlos Eduardo Seo <cseo@linux.vnet.ibm.com>
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Bryan C. Mills authored
Fixes #32162 Change-Id: I164665108fa8ae299229054bded82cb3b027bccb Reviewed-on: https://go-review.googlesource.com/c/go/+/196023 Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Tobias Klauser authored
Fixes #34015 Change-Id: I29798fb9c72b6f4bee8aecea96ab13b4cba2e80d Reviewed-on: https://go-review.googlesource.com/c/go/+/195738 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Matthew Dempsky authored
When compiling expression switches, we try to optimize runs of constants into binary searches. The ordering used isn't visible to the application, so it's unimportant as long as we're consistent between sorting and searching. For strings, it's much cheaper to compare string lengths than strings themselves, so instead of ordering strings by "si <= sj", we currently order them by "len(si) < len(sj) || len(si) == len(sj) && si <= sj" (i.e., the lexicographical ordering on the 2-tuple (len(s), s)). However, it's also somewhat cheaper to compare strings for equality (i.e., ==) than for ordering (i.e., <=). And if there were two or three string constants of the same length in a switch statement, we might unnecessarily emit ordering comparisons. For example, given: switch s { case "", "1", "2", "3": // ordered by length then content goto L } we currently compile this as: if len(s) < 1 || len(s) == 1 && s <= "1" { if s == "" { goto L } else if s == "1" { goto L } } else { if s == "2" { goto L } else if s == "3" { goto L } } This CL switches to using a 2-level binary search---first on len(s), then on s itself---so that string ordering comparisons are only needed when there are 4 or more strings of the same length. (4 being the cut-off for when using binary search is actually worthwhile.) So the above switch instead now compiles to: if len(s) == 0 { if s == "" { goto L } } else if len(s) == 1 { if s == "1" { goto L } else if s == "2" { goto L } else if s == "3" { goto L } } which is better optimized by walk and SSA. (Notably, because there are only two distinct lengths and no more than three strings of any particular length, this example ends up falling back to simply using linear search.) Test case by khr@ from CL 195138. Fixes #33934. Change-Id: I8eeebcaf7e26343223be5f443d6a97a0daf84f07 Reviewed-on: https://go-review.googlesource.com/c/go/+/195340 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:Keith Randall <khr@golang.org>
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Robert Griesemer authored
Fixes #34343. Change-Id: I74240c8f431f6596338633a86a7a5ee1fce70a65 Reviewed-on: https://go-review.googlesource.com/c/go/+/196057 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Robert Griesemer authored
Remove redundant code and improve documentation in the process. Fixes #34211. Change-Id: I9a6d1467f1a2c98a163f41f9df147fc6500c6fad Reviewed-on: https://go-review.googlesource.com/c/go/+/196077Reviewed-by:
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Matthew Dempsky authored
Change-Id: Ic33dfccf06681470bec19f66653fda67d9901095 Reviewed-on: https://go-review.googlesource.com/c/go/+/196118Reviewed-by:
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Matthew Dempsky authored
We used to use OXCASE to represent general, possibly multi-valued cases, and then desugar these during walk into single-value cases represented by OCASE. In CL 194660, we switched to eliminated the desugaring step and instead handle the multi-valued cases directly, which eliminates the need for an OCASE Op. Instead, we can simply remove OCASE, and rename OXCASE to just OCASE. Passes toolstash-check. Change-Id: I3cc184340f9081d37453927cca1c059267fdbc12 Reviewed-on: https://go-review.googlesource.com/c/go/+/196117Reviewed-by:
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Matthew Dempsky authored
When emitting base cases, previously we would emit: if c1 { s1 } if c2 { s2 } if c3 { s3 } With this CL, we instead emit: if c1 { s1 } else if c2 { s2 } else if c3 { s3 } Most of the time, this doesn't make a difference, because s1/s2/s3 are typically "goto" statements. But for type switches, we currently emit: if hash == 271 { if _, ok := iface.(T1); ok { goto t1case } } if hash == 314 { if _, ok := iface.(T2); ok { goto t2case } } That is, the if bodies can fallthrough, even though it's impossible for them to match any of the subsequent cases. Change-Id: I453d424d0b5e40060a703738bbb374523f1c403c Reviewed-on: https://go-review.googlesource.com/c/go/+/195339 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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- 17 Sep, 2019 12 commits
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Robert Griesemer authored
Complete interfaces before comparing them with Checker.identical. This requires passing through a *Checker to various functions that didn't need this before. Verified that none of the exported API entry points for interfaces that rely on completed interfaces are used internally except for Interface.Empty. Verified that interfaces are complete before calling Empty on them, and added a dynamic check in the exported functions. Unfortunately, this fix exposed another problem with an esoteric test case (#33656) which we need to reopen. Fixes #34151. Updates #33656. Change-Id: I4e14bae3df74a2c21b565c24fdd07135f22e11c0 Reviewed-on: https://go-review.googlesource.com/c/go/+/195837 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
Matthew Dempsky <mdempsky@google.com>
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Javier authored
Change-Id: I95921a8a55b243600aaec24ddca74b7040107dca Reviewed-on: https://go-review.googlesource.com/c/go/+/195203Reviewed-by:
Robert Griesemer <gri@golang.org>
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Jeremy Faller authored
This reverts commit 06e5529e. Reason for revert: darwin_386 is unhappy. (Almost as unhappy as I am.) https://build.golang.org/log/292c90a4ef1c93597b865ab8513b66a95d93d022 Change-Id: I690566ce1d8212317fc3dc349ad0d4d5a2bb58eb Reviewed-on: https://go-review.googlesource.com/c/go/+/196033Reviewed-by:
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Pantelis Sampaziotis authored
This change adds testable examples for the new Microseconds and Milliseconds methods that were introduced in Go 1.13. Fixes #34354 Change-Id: Ibdbfd770ca2192f9086f756918325f7327ce0482 GitHub-Last-Rev: 4575f48f5feb8e49742304d17776e28302647931 GitHub-Pull-Request: golang/go#34355 Reviewed-on: https://go-review.googlesource.com/c/go/+/195979Reviewed-by:
Alexander Rakoczy <alex@golang.org> Reviewed-by:
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Jeremy Faller authored
RELNOTE=This change adds an underscore to all Go symbols in darwin, and the behavior might be confusing to users of tools like "nm", etc. Fixes #33808 Change-Id: I19ad626026ccae1e87b3bb97b6bb9fd55e95e121 Reviewed-on: https://go-review.googlesource.com/c/go/+/195619 Run-TryBot: Jeremy Faller <jeremy@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Than McIntosh authored
The elf reader's method for reading in DWARF section data has support for applying selected relocations when the debug/dwarf readers are being used on relocatable objects. This patch extends the set of relocations applied slightly. In particlar, prior to this for some architectures we were only applying relocations whose target symbol was a section symbol; now we also include some relocations that target other symbols. This is needed to get meaningful values for compilation unit DIE low_pc attributes, which typically target a specific function symbol in text. Fixes #31363. Change-Id: I34b02e7904cd7f2dea74197f73fa648141d15212 Reviewed-on: https://go-review.googlesource.com/c/go/+/195679Reviewed-by:
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Daniel Martí authored
As correctly pointed out by Giovanni Bajo, doing a single regexp pass should be much faster than doing hundreds per architecture. We can then use a map to keep track of what ops are handled in each file. And the amount of saved work is evident: name old time/op new time/op delta Rulegen 2.48s ± 1% 2.02s ± 1% -18.44% (p=0.008 n=5+5) name old user-time/op new user-time/op delta Rulegen 10.9s ± 1% 8.9s ± 0% -18.27% (p=0.008 n=5+5) name old sys-time/op new sys-time/op delta Rulegen 209ms ±28% 236ms ±18% ~ (p=0.310 n=5+5) name old peak-RSS-bytes new peak-RSS-bytes delta Rulegen 178MB ± 3% 176MB ± 3% ~ (p=0.548 n=5+5) The speed-up is so large that we don't need to parallelize it anymore; the numbers above are with the removed goroutines. Adding them back in doesn't improve performance noticeably at all: name old time/op new time/op delta Rulegen 2.02s ± 1% 2.01s ± 1% ~ (p=0.421 n=5+5) name old user-time/op new user-time/op delta Rulegen 8.90s ± 0% 8.96s ± 1% ~ (p=0.095 n=5+5) While at it, remove an unused method. Change-Id: I328b56e63b64a9ab48147e67e7d5a385c795ec54 Reviewed-on: https://go-review.googlesource.com/c/go/+/195739 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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LE Manh Cuong authored
golang.org/cl/109517 optimized the compiler to avoid the allocation for make in append(x, make([]T, y)...). This was only implemented for the case that y has type int. This change extends the optimization to trigger for all integer types where the value is known at compile time to fit into an int. name old time/op new time/op delta ExtendInt-12 106ns ± 4% 106ns ± 0% ~ (p=0.351 n=10+6) ExtendUint64-12 1.03µs ± 5% 0.10µs ± 4% -90.01% (p=0.000 n=9+10) name old alloc/op new alloc/op delta ExtendInt-12 0.00B 0.00B ~ (all equal) ExtendUint64-12 13.6kB ± 0% 0.0kB -100.00% (p=0.000 n=10+10) name old allocs/op new allocs/op delta ExtendInt-12 0.00 0.00 ~ (all equal) ExtendUint64-12 1.00 ± 0% 0.00 -100.00% (p=0.000 n=10+10) Updates #29785 Change-Id: Ief7760097c285abd591712da98c5b02bc3961fcd Reviewed-on: https://go-review.googlesource.com/c/go/+/182559 Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Keith Randall authored
Now that mid-stack inlining reports backtraces correctly, we no longer need to protect against inlining in a few critical areas. Update #19348 Update #28640 Update #34276 Change-Id: Ie68487e6482c3a9509ecf7ecbbd40fe43cee8381 Reviewed-on: https://go-review.googlesource.com/c/go/+/195818Reviewed-by:
David Chase <drchase@google.com>
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Tamir Duberstein authored
This slightly simplified the code. I stumbled upon this when support was being added to Fuchsia (and this pattern was initially cargo-culted). Change-Id: Ica090a118a0056c5c1b51697691bc7308f0d424a Reviewed-on: https://go-review.googlesource.com/c/go/+/177878Reviewed-by:
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Joel Sing authored
Add support for assembling integer computational instructions. Based on the riscv-go port. Updates #27532 Change-Id: Ibf02649eebd65ce96002a9ca0624266d96def2cd Reviewed-on: https://go-review.googlesource.com/c/go/+/195079 Run-TryBot: Joel Sing <joel@sing.id.au> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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Robert Griesemer authored
This eliminates an old TODO. Change-Id: I36d666905f43252f5d338b11ef9c1ed8b5f22b1f Reviewed-on: https://go-review.googlesource.com/c/go/+/195817 Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by:
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