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Commit Graph

52881 Commits

Author SHA1 Message Date
Matthew Dempsky
1973be519a cmd/compile/internal/noder: remove unified IR assumptions on LocalPkg.Path == ""
Replace `pkg.Path == ""` check with `pkg == types.LocalPkg`. This is a
prep refactoring for CL 393715, which will properly initialize
types.LocalPkg.

Updates #51734.

Change-Id: I7a5428ef1f422de396762b6bc6d323992834b27c
Reviewed-on: https://go-review.googlesource.com/c/go/+/406056
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-13 21:12:13 +00:00
Matthew Dempsky
b6c5a5baa7 cmd/compile/internal/gc: parse command-line flags earlier
This CL moves the call to base.ParseFlags() earlier in compiler
startup. This is necessary so CL 393715 can use base.Ctxt.Pkgpath to
construct types.LocalPkg.

Updates #51734.

Change-Id: I9f5f75dc9d5fd1b1d22e98523efc95e6cec64385
Reviewed-on: https://go-review.googlesource.com/c/go/+/406055
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-13 21:12:06 +00:00
Ian Lance Taylor
e97ceb2782 time: clarify that monotonic clock is not returned by t.Unix
Prompted by CL 403996.

Change-Id: I8b480a9d361863d4770c7c9a4437431424f26994
Reviewed-on: https://go-review.googlesource.com/c/go/+/404695
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Rob Pike <r@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2022-05-13 21:01:13 +00:00
Ville Skyttä
92998cde5a mime: skip globs2 entries that are not simple file extensions
The entries in globs2 can be globs beyond simple *.ext ones. We support only simple extension based matching, so skip entries that do not represent them.

Change-Id: Id5d089cb4067e53beb2471a5e67a59c13880a017
GitHub-Last-Rev: f725a91054
GitHub-Pull-Request: golang/go#51156
Reviewed-on: https://go-review.googlesource.com/c/go/+/385256
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-13 21:01:01 +00:00
penglei
e755a5649a cmd/go/internal/mvs: Delete redundant searching for maximum version when building minimal requirement list
mvs.Req performs an unnecessary search for the maximum version when building minimal requirement list. Someone may be confused when reading this piece of code. The comment of the BuildList function also states that the build list contains the maximum version of each module. We just need to create a maximum version cache that maps from path to version, in the beginning of the Req function body.

Change-Id: I4b353e167f2dcc96bc13cc2e1c602bce47c72bc9
GitHub-Last-Rev: fce11d3c72
GitHub-Pull-Request: golang/go#50345
Reviewed-on: https://go-review.googlesource.com/c/go/+/374277
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>
2022-05-13 21:00:31 +00:00
Michael Anthony Knyszek
cfccb5cb7c runtime/metrics: add the last GC cycle that had the limiter enabled
This metric exports the the last GC cycle index that the GC limiter was
enabled. This metric is useful for debugging and identifying the root
cause of OOMs, especially when SetMemoryLimit is in use.

For #48409.

Change-Id: Ic6383b19e88058366a74f6ede1683b8ffb30a69c
Reviewed-on: https://go-review.googlesource.com/c/go/+/403614
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2022-05-13 20:45:19 +00:00
Michael Anthony Knyszek
9bd6e2776f runtime/metrics: add the number of Go-to-C calls
For #47216.

Change-Id: I1c2cd518e6ff510cc3ac8d8f72fd52eadcabc16c
Reviewed-on: https://go-review.googlesource.com/c/go/+/404306
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2022-05-13 20:45:09 +00:00
David Chase
364ced6255 runtime: tweak js and plan9 to avoid/disable write barrier & gc problems
runtime code for js contains possible write barriers that fail
the nowritebarrierrec check when internal local package naming
conventions are changed.  The problem was there all already; this
allows the code to compile, and it seems to work anyway in the
(single-threaded) js/wasm environment.  The offending operations
are noted with TODO, which is an improvement.

runtime code for plan9 contained an apparent allocation that was
not really an allocation; rewrite to remove the potential allocation
to avoid nowritebarrierrec problems.

This CL is a prerequisite for a pending code cleanup,
https://go-review.googlesource.com/c/go/+/393715

Updates #51734.

Change-Id: I93f31831ff9b92632137dd7b0055eaa721c81556
Reviewed-on: https://go-review.googlesource.com/c/go/+/405901
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-13 19:51:37 +00:00
Cherry Mui
540f8c2b50 cmd/compile: use jump table on ARM64
Following CL 357330, use jump tables on ARM64.

name                         old time/op  new time/op  delta
Switch8Predictable-4         3.41ns ± 0%  3.21ns ± 0%     ~     (p=0.079 n=4+5)
Switch8Unpredictable-4       12.0ns ± 0%   9.5ns ± 0%  -21.17%  (p=0.000 n=5+4)
Switch32Predictable-4        3.06ns ± 0%  2.82ns ± 0%   -7.78%  (p=0.008 n=5+5)
Switch32Unpredictable-4      13.3ns ± 0%   9.5ns ± 0%  -28.87%  (p=0.016 n=4+5)
SwitchStringPredictable-4    3.71ns ± 0%  3.21ns ± 0%  -13.43%  (p=0.000 n=5+4)
SwitchStringUnpredictable-4  14.8ns ± 0%  15.1ns ± 0%   +2.37%  (p=0.008 n=5+5)

Change-Id: Ia0b85df7ca9273cf70c05eb957225c6e61822fa6
Reviewed-on: https://go-review.googlesource.com/c/go/+/403979
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: David Chase <drchase@google.com>
2022-05-13 19:51:03 +00:00
Rhys Hiltner
ba8310cf29 runtime/pprof: fix allFrames cache
The compiler may choose to inline multiple layers of function call, such
that A calling B calling C may end up with all of the instructions for B
and C written as part of A's function body.

Within that function body, some PCs will represent code from function A.
Some will represent code from function B, and for each of those the
runtime will have an instruction attributable to A that it can report as
its caller. Others will represent code from function C, and for each of
those the runtime will have an instruction attributable to B and an
instruction attributable to A that it can report as callers.

When a profiling signal arrives at an instruction in B (as inlined in A)
that the runtime also uses to describe calls to C, the profileBuilder
ends up with an incorrect cache of allFrames results. That PC should
lead to a location record in the profile that represents the frames
B<-A, but the allFrames cache's view should expand the PC only to the B
frame.

Otherwise, when a profiling signal arrives at an instruction in C (as
inlined in B in A), the PC stack C,B,A can get expanded to the frames
C,B<-A,A as follows: The inlining deck starts empty. The first tryAdd
call proposes PC C and frames C, which the deck accepts. The second
tryAdd call proposes PC B and, due to the incorrect caching, frames B,A.
(A fresh call to allFrames with PC B would return the frame list B.) The
deck accepts that PC and frames. The third tryAdd call proposes PC A and
frames A. The deck rejects those because a call from A to A cannot
possibly have been inlined. This results in a new location record in the
profile representing the frames C<-B<-A (good), as called by A (bad).

The bug is the cached expansion of PC B to frames B<-A. That mapping is
only appropriate for the resulting protobuf-format profile. The cache
needs to reflect the results of a call to allFrames, which expands the
PC B to the single frame B.

For #50996
For #52693
Fixes #52764

Change-Id: I36d080f3c8a05650cdc13ced262189c33b0083b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/404995
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Rhys Hiltner <rhys@justin.tv>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-05-13 19:45:43 +00:00
David Chase
81d567146e runtime: add go:yeswritebarrierrec to panic functions
Panic avoids any write barriers in the runtime by checking first
and throwing if called inappropriately, so it is "okay".  Adding
this annotation repairs recursive write barrier checking, which
becomes more thorough when the local package naming convention
is changed from "" to the actual package name.

This CL is a prerequisite for a pending code cleanup,
https://go-review.googlesource.com/c/go/+/393715

Updates #51734.

Change-Id: If831a3598c6c8cd37a8e9ba269f822cd81464a13
Reviewed-on: https://go-review.googlesource.com/c/go/+/405900
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: David Chase <drchase@google.com>
2022-05-13 19:29:44 +00:00
David Chase
9a68dcd7de buildcfg: disable regabiwrappers along with regabiargs
This (1) "just makes sense"
and (2) avoids a weird bug in some name-dependent calling conventions
in wasm code generation, when the local pkg has a real name instead of "".
The calling conventions are triggered for a "wrapper" function, and somehow
an abiwrapper was taken to be a "wrapper" function, resulting in the use of
an invalid register.  But abiwrapping has no business being in js/wasm code
generation, so just turn that off.

Updates #51734.

For posterity, that crash is:

GOSSAFUNC=wasmTruncU GOMAXPROCS=1 \
GOOS=js GOARCH=wasm GOEXPERIMENT=regabi,regabiargs
/Users/drchase/work/go-quick/bin/go build \
-gcflags=all=-d=abiwrap -o a.exe \
GOROOT/test/abi/bad_select_crash.go

<autogenerated>:1: internal compiler error: panic: bad Get: invalid register

goroutine 1 [running]:
runtime/debug.Stack()
	runtime/debug/stack.go:24 +0x65
cmd/compile/internal/base.FatalfAt({0xc80?, 0x0?}, {0x195c85e, 0x9}, {0xc005ef72c8, 0x1, 0x1})
	/Users/drchase/work/go-quick/src/cmd/compile/internal/base/print.go:227 +0x1d7
cmd/compile/internal/base.Fatalf(...)
	/Users/drchase/work/go-quick/src/cmd/compile/internal/base/print.go:196
cmd/compile/internal/gc.handlePanic()
	/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/main.go:48 +0x85
panic({0x18bf3c0, 0x1ad0430})
	runtime/panic.go:854 +0x26d
cmd/internal/obj/wasm.assemble(0xc0000f8200, 0xc001c74880, 0x0?)
	/Users/drchase/work/go-quick/src/cmd/internal/obj/wasm/wasmobj.go:920 +0x1958
cmd/internal/obj.Flushplist(0xc0000f8200, 0xc005ef79a8, 0xc0022264c0, {0x7ff7bfefdd17, 0x7})
	/Users/drchase/work/go-quick/src/cmd/internal/obj/plist.go:151 +0x784
cmd/compile/internal/objw.(*Progs).Flush(...)
	/Users/drchase/work/go-quick/src/cmd/compile/internal/objw/prog.go:124
cmd/compile/internal/ssagen.Compile(0xc000707e00, 0xc001b4d620?)
	/Users/drchase/work/go-quick/src/cmd/compile/internal/ssagen/pgen.go:208 +0x495
cmd/compile/internal/gc.compileFunctions.func4.1(0xc005ef7a01?)
	/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:153 +0x3a
cmd/compile/internal/gc.compileFunctions.func2(0x0?)
	/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:125 +0x1e
cmd/compile/internal/gc.compileFunctions.func4({0xc004685000, 0x79f, 0xa00?})
	/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:152 +0x53
cmd/compile/internal/gc.compileFunctions()
	/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/compile.go:163 +0x162
cmd/compile/internal/gc.Main(0x198d3d8)
	/Users/drchase/work/go-quick/src/cmd/compile/internal/gc/main.go:297 +0x108a
main.main()
	/Users/drchase/work/go-quick/src/cmd/compile/main.go:55 +0xdd

Change-Id: I79f039e2494f78efba60e52ab1110d62656fb7ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/405899
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-13 18:21:52 +00:00
Xiaodong Liu
0653cb4cf7 cmd/asm/internal: configure assembler for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I4b0247a331256162b47fbd94589f46ba062d4d44
Reviewed-on: https://go-review.googlesource.com/c/go/+/387234
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-13 18:18:14 +00:00
Xiaodong Liu
fd17a4dc09 cmd/compile: register Init function for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Ia3cb07af626e3422e43e3834baf15b7c8fad2326
Reviewed-on: https://go-review.googlesource.com/c/go/+/349511
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: David Chase <drchase@google.com>
2022-05-13 18:14:52 +00:00
David Chase
5b4fafd5db cmd/compile: sort named types before unnamed in reflect
When the local package has an explicit name instead of "",
this is necessary to get past a cgo plugin test that fails
because of a package signature mismatch.  There's something
questionable going on in the package hash generation, and
in particular it went wrong here.  Updating the sort order
helps.

This CL is a prerequisite for a pending code cleanup,
https://go-review.googlesource.com/c/go/+/393715

Updates #51734.

The failure:

GOROOT/misc/cgo/testplugin$ go test .
mkdir -p $TMPDIR/src/testplugin
rsync -a testdata/ $TMPDIR/src/testplugin
echo 'module testplugin' > $TMPDIR/src/testplugin/go.mod
mkdir -p $TMPDIR/alt/src/testplugin
rsync -a altpath/testdata/ $TMPDIR/alt/src/testplugin
echo 'module testplugin' > $TMPDIR/alt/src/testplugin/go.mod
cd $TMPDIR/alt/src/testplugin
( PWD=$TMPDIR/alt/src/testplugin GOPATH=$TMPDIR/alt go build -gcflags '' -buildmode=plugin -o $TMPDIR/src/testplugin/plugin-mismatch.so ./plugin-mismatch )
cd $TMPDIR/src/testplugin
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go build -gcflags '' -buildmode=plugin ./plugin1 )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go build -gcflags '' -buildmode=plugin ./plugin2 )
cp plugin2.so plugin2-dup.so
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go build -gcflags '' -buildmode=plugin -o=sub/plugin1.so ./sub/plugin1 )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go build -gcflags '' -buildmode=plugin -o=unnamed1.so ./unnamed1/main.go )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go build -gcflags '' -buildmode=plugin -o=unnamed2.so ./unnamed2/main.go )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go build -gcflags '' -o host.exe ./host )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go run -gcflags '' ./checkdwarf/main.go plugin2.so plugin2.UnexportedNameReuse )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin go run -gcflags '' ./checkdwarf/main.go ./host.exe main.main )
( PWD=$TMPDIR/src/testplugin GOPATH=$TMPDIR LD_LIBRARY_PATH=$TMPDIR/src/testplugin ./host.exe )
--- FAIL: TestRunHost (0.02s)
    plugin_test.go:187: ./host.exe: exit status 1
        2022/05/13 11:26:37 plugin.Open failed: plugin.Open("plugin1"): plugin was built with a different version of package runtime

and many more after that.

Change-Id: I0780decc5bedeea640ed0b3710867aeda5b3f725
Reviewed-on: https://go-review.googlesource.com/c/go/+/405995
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-13 18:08:06 +00:00
Roland Shoemaker
7e33e9e7a3 cmd/go: don't assume decimal in test_fuzz_mutate_crash
In the float test in test_fuzz_mutate_crash, don't assume the mutator
will generate a decimal during mutation. The probability it will is
quite high, but it is not guaranteed, which can cause a flake. Since we
are not really testing that the mutator will do this kind of mutation,
just that a mutation happens, just check that the input is not the zero
value like the rest of the targets.

Fixes #52852

Change-Id: I4640be640204ced01b4dc749c74b46da968ea7df
Reviewed-on: https://go-review.googlesource.com/c/go/+/405855
Run-TryBot: Bryan Mills <bcmills@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Roland Shoemaker <roland@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-13 16:22:05 +00:00
Michael Anthony Knyszek
ece6ac4d4d runtime/metrics: add gomaxprocs metric
For #47216.

Change-Id: Ib2d48c4583570a2dae9510a52d4c6ffc20161b31
Reviewed-on: https://go-review.googlesource.com/c/go/+/404305
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2022-05-13 16:02:59 +00:00
Michael Anthony Knyszek
0f715f1ac9 runtime/internal/atomic: align 64-bit types to 8 bytes everywhere
This change extends https://go.dev/cl/381317 to the
runtime/internal/atomic package in terms of aligning 64-bit types to 8
bytes, even on 32-bit platforms.

Change-Id: Id8c45577d07b256e3144d88b31f201264295cfcd
Reviewed-on: https://go-review.googlesource.com/c/go/+/404096
Reviewed-by: David Chase <drchase@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2022-05-13 16:02:27 +00:00
Michael Anthony Knyszek
2eb8b6eec6 runtime: make CPU limiter assist time much less error-prone
At the expense of performance (having to update another atomic counter)
this change makes CPU limiter assist time much less error-prone to
manage. There are currently a number of issues with respect to how
scavenge assist time is treated, and this change resolves those by just
having the limiter maintain its own internal pool that's drained on each
update.

While we're here, clear the measured assist time each cycle, which was
the impetus for the change.

Change-Id: I84c513a9f012b4007362a33cddb742c5779782b7
Reviewed-on: https://go-review.googlesource.com/c/go/+/404304
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Michael Knyszek <mknyszek@google.com>
2022-05-13 16:02:20 +00:00
Roland Shoemaker
5a4ba6d905 cmd/go: make TestScript/test_fuzz_minimize_dirty_cov use less memory
The test doesn't need to be as aggressive, it _should_ still tickle
the right paths with high enough probability. This should
significantly reduce the memory it consumes, which is at a premium
when testing fuzzing things.

Fixes #52744

Change-Id: I4d8dd5b29e65fb429962850b3f4477982452c856
Reviewed-on: https://go-review.googlesource.com/c/go/+/404634
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
2022-05-13 15:23:38 +00:00
Paul E. Murphy
d4dd7acd2e crypto/aes: simplify key load+store on PPC64
There is no requirement for how the expanded keys are stored
in memory. They are only accessed by asm routines. If keys
are stored directly with stxvd2x, they can be loaded directly
with lxvd2x.

This speeds up ppc64le key expansion and crypting a bit too.

POWER9 aes benchmark delta:

name     old time/op    new time/op    delta
Encrypt    15.0ns ± 0%    13.0ns ± 0%  -13.17%
Decrypt    14.6ns ± 0%    13.0ns ± 0%  -11.02%
Expand     49.1ns ± 0%    45.1ns ± 0%   -8.01%

name             old time/op    new time/op    delta
AESCBCEncrypt1K    1.08µs ± 0%    1.08µs ± 0%   -0.46%
AESCBCDecrypt1K     744ns ± 0%     562ns ± 0%  -24.46%

Change-Id: I91f3cdc770a178aee849301e4e6aa5a4a517ad10
Reviewed-on: https://go-review.googlesource.com/c/go/+/405135
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
2022-05-13 14:14:49 +00:00
Paul E. Murphy
b553f51fcd crypto/aes: enable aes-cbc asm for ppc64
This reworks how we load/store vector registers using the new
bi-endian P9 instruction emulation macros. This also removes
quite a bit of asm used to align and reorder vector registers.

This is also a slight improvement on P9 ppc64le/linux:

    name             old speed      new speed      delta
    AESCBCEncrypt1K   936MB/s ± 0%   943MB/s ± 0%  +0.80%
    AESCBCDecrypt1K  1.28GB/s ± 0%  1.37GB/s ± 0%  +6.76%

Updates #18499

Change-Id: Ic5ff71d217d7302b6ae4e8d877c25004bfda5ecd
Reviewed-on: https://go-review.googlesource.com/c/go/+/405134
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-13 14:14:26 +00:00
Keith Randall
016d755213 runtime: measure stack usage; start stacks larger if needed
Measure the average stack size used by goroutines at every GC. When
starting a new goroutine, allocate an initial goroutine stack of that
average size. Intuition is that we'll waste at most 2x in stack space
because only half the goroutines can be below average. In turn, we
avoid some of the early stack growth / copying needed in the average
case.

More details in the design doc at: https://docs.google.com/document/d/1YDlGIdVTPnmUiTAavlZxBI1d9pwGQgZT7IKFKlIXohQ/edit?usp=sharing

name        old time/op  new time/op  delta
Issue18138  95.3µs ± 0%  67.3µs ±13%  -29.35%  (p=0.000 n=9+10)

Fixes #18138

Change-Id: Iba34d22ed04279da7e718bbd569bbf2734922eaa
Reviewed-on: https://go-review.googlesource.com/c/go/+/345889
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
2022-05-12 22:32:42 +00:00
Robert Griesemer
da0a6f4b57 spec: fix prose about promoted methods of embedded fields
The types of embedded fields must be named, but they don't
need to be defined types (e.g. if the type name is an alias).

Fixes #41687.

Change-Id: Ib9de65dfab0e23c27d8303875fa45c217aa03331
Reviewed-on: https://go-review.googlesource.com/c/go/+/406054
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2022-05-12 22:29:02 +00:00
Ian Lance Taylor
6365efb7dc test: add test case that caused a gofrontend crash
For #52841

Change-Id: If4723a70fba0dbedb5d1e70dab58f0b4612bf8b9
Reviewed-on: https://go-review.googlesource.com/c/go/+/405759
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
2022-05-12 21:45:28 +00:00
Xiaodong Liu
2136e15510 cmd/compile/internal/loong64: implement Init function for loong64
Register functions and parameters that are used in gc backend and
are architecture related for loong64.

Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Iab3f13b70a41f31f412b59801def3106f5eb7c11
Reviewed-on: https://go-review.googlesource.com/c/go/+/367036
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
2022-05-12 21:40:53 +00:00
Roland Shoemaker
267013e6e9 crypto/x509: attempt to prime windows root pool before hybrid test
In TestHybridPool attempt to prime to the windows root pool before
the real test actually happens. This is a bit of a band-aid, with
a better long term solution discussed in #52108.

Updates #51599

Change-Id: I406add8d9cd9e3fae37bfc20b97f5479c10a52c2
Reviewed-on: https://go-review.googlesource.com/c/go/+/405914
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Roland Shoemaker <roland@golang.org>
2022-05-12 20:58:12 +00:00
Michael Matloob
27ace7ab9e cmd/go: make modifications to copies of go/build files for index
This change makes the modifications to the copies of the files of
go/build used by the modindex package needed for them to be used by
modindex. It also removes the parts of the files not needed by the
modindex package.

Change-Id: I72607868bd7e1ca5fc7c5a496cc836e7922e3786
Reviewed-on: https://go-review.googlesource.com/c/go/+/403974
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Michael Matloob <matloob@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
2022-05-12 20:19:10 +00:00
Michael Matloob
1e5fcefcd1 cmd/go: copy files from go/build into new modindex package
These files are all copied as is from the go/build package, to files
with the same name in modindex (with the exception of build_read, which
was copied from go/build/read.go).

This is being done so that the next CL can show exactly the changes that
were made against the go/build versions.

Unfortunately, git doesn't recognize these as copies, which is annoying.

Change-Id: I27b05b23dc5ccefe5252956bf75025bd57b36c66
Reviewed-on: https://go-review.googlesource.com/c/go/+/403777
Reviewed-by: Michael Matloob <matloob@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Michael Matloob <matloob@golang.org>
Reviewed-by: Bryan Mills <bcmills@google.com>
2022-05-12 20:17:26 +00:00
Cherry Mui
d6e6140c98 cmd/compile: fix boolean comparison on RISCV64
Following CL 405114, for RISCV64.

May fix RISCV64 builds.

Updates #52788.

Change-Id: Ifc34658703d1e8b97665e7b862060152e3005d71
Reviewed-on: https://go-review.googlesource.com/c/go/+/405553
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2022-05-12 19:11:22 +00:00
Robert Griesemer
f269d90bf2 spec: use original terminology in metasyntax (cleanup)
The metasyntax used in the spec is exactly the Wirth Syntax
Notation (WSN), which eventually influenced EBNF. Add a link
but keep mentioning EBNF which is likely more commonly known.

Use the original terms in the productions. Specifically, use
the words "Term" and "Factor" rather than "Alternative" and
"Term".

The terminology cleanup also resolves an inconsistency in the
subsequent prose which is referring to the correct "terms" now.

While at it, add a production for the entire Syntax itself,
matching the original WSN definition.

Also, replace the two uses of "grammar" with "syntax" for
consistency ("syntax" is the prevalent term used throughout
the spec).

Fixes #50074.

Change-Id: If770d5f32f56f509f85893782c1dafbb0eb29b2e
Reviewed-on: https://go-review.googlesource.com/c/go/+/405814
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2022-05-12 19:04:52 +00:00
Robert Griesemer
1dfe994fe9 spec: use Unicode terminology consistently
- refer to character "categories" rather than "classes" per the
  definitions in the Unicode standard
- use "uppercase", "lowercase" (one word) instead of "upper case"
  or "upper-case", matching the spelling in the Unicode standard
- clarify that that the blank character "_" is considered a lowercase
  letter for Go's purposes (export of identifiers)

Fixes #44715.

Change-Id: I54ef177d26c6c56624662fcdd6d1da60b9bb8d02
Reviewed-on: https://go-review.googlesource.com/c/go/+/405758
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2022-05-12 19:04:46 +00:00
Cherry Mui
e3f7816f0e cmd/link: remove name expansion logic
Now both the compiler and the assembler require the -p flag and
emit full package path in symbol names, we no longer need to do
the name expansion in the linker. Delete it.

Change-Id: I771d4d97987a0a17414881b52806d600ef4cc351
Reviewed-on: https://go-review.googlesource.com/c/go/+/404300
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
2022-05-12 18:45:57 +00:00
Yasuhiro Matsumoto
c4c9c80e4f all.bat,clean.bat,race.bat,run.bat: call some.bat with .\some.bat
When set NoDefaultCurrentDirectoryInExePath=1, call some.bat does not work.

Change-Id: Ifeab27ecf0d7ba1d504b755a22f73a0f13abbbb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/405874
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2022-05-12 16:59:17 +00:00
Yasuhiro Matsumoto
917f201f95 make.bat: call env.bat with .\env.bat
When set NoDefaultCurrentDirectoryInExePath=1, call env.bat does not work.

Change-Id: If63b02e236079681bdadadbdebc0b39abce01219
Reviewed-on: https://go-review.googlesource.com/c/go/+/405774
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Bryan Mills <bcmills@google.com>
Run-TryBot: Bryan Mills <bcmills@google.com>
2022-05-12 13:50:51 +00:00
Tobias Klauser
0d8345df66 net/netip: skip some TestAddrStringAllocs tests on noopt builders
CL 403914 introduced TestAddrStringAllocs which checks that there is
only 1 alloc in Addr.String for v4-in-v6 addresses. This requires
optimizations to be enabled, otherwise there are 2 allocs. Skip the
ipv4-in-ipv6 sub-tests on noopt builders to fix failing
TestAddrStringAllocs on the noopt builders.

Change-Id: I0285264260b264b53cf822dc7cec4829e9854531
Reviewed-on: https://go-review.googlesource.com/c/go/+/405834
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
2022-05-12 13:42:39 +00:00
Robert Griesemer
2bea43b0e7 spec: state that variable names must be unique in short var decls
Fixes #45652.

Change-Id: I5e1434480c12815369a6ce204f3729eb63139125
Reviewed-on: https://go-review.googlesource.com/c/go/+/405757
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-12 04:47:29 +00:00
Robert Griesemer
c01feba15d spec: clarify "continue" statement
Taking into account the discussion and relevant feedback on a
change proposed in 2013 (see e-mail thread mentioned in issue).

Fixes #48864.

Change-Id: I811d518b7cbdf6b815695174f1da3d4251f491c3
Reviewed-on: https://go-review.googlesource.com/c/go/+/405756
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-12 04:47:23 +00:00
Robert Griesemer
7e11ff3816 spec: correct assignment rules with respect to type parameters
Fixes #52628.

Change-Id: If4261abc25868d62f7689253d40f872692c23a4d
Reviewed-on: https://go-review.googlesource.com/c/go/+/405755
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
2022-05-12 04:47:18 +00:00
Robert Griesemer
5d0400c72d spec: adjust scope of function/method type parameters
Change scope rules per the accepted proposal #52038.
Match prose for type parameters of type declarations.
Fixing the implementation is tracked by #51503.

Fixes #52038.
For #51503.

Change-Id: Iebd88a82c896b7b2e8520cd514ef6a2cc903e807
Reviewed-on: https://go-review.googlesource.com/c/go/+/405754
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-12 04:47:13 +00:00
Xiaodong Liu
900ae5b35a cmd/compile/internal/ssagen: enable intrinsic operation on loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: If28fe03297e1de62f348373f2779dce07f54611c
Reviewed-on: https://go-review.googlesource.com/c/go/+/367042
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
2022-05-12 04:08:07 +00:00
Xiaodong Liu
756fcd8fc2 cmd/compile/internal/ssa: config functions used in lower pass for loong64
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I50d20eb22f2108d245513de8ac95ebe0b7e1a1dc
Reviewed-on: https://go-review.googlesource.com/c/go/+/367037
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-12 01:08:28 +00:00
Xiaodong Liu
a2d12076b9 cmd/compile/internal/ssa: add support on loong64 for schedule phase
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Id533912c62d8c4e2aa3c124561772b543d685d7d
Reviewed-on: https://go-review.googlesource.com/c/go/+/367041
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-12 00:24:40 +00:00
Xiaodong Liu
a6c95e75d9 cmd/compile/internal/ssa: inline memmove with known size
Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I1534b66b527efaf2bbaa8e6e6ac0618aac0b5930
Reviewed-on: https://go-review.googlesource.com/c/go/+/367040
Run-TryBot: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-11 23:58:56 +00:00
Alexander Yastrebov
c14ed5b37c Revert "net/http: close accepted connection"
This reverts CL 353714.

The change closes accepted connection also in graceful shutdown which
breaks the fix for #33313 (and apparent duplicate #36819).

The proper fix should close accepted connection only if server is closed
but not in graceful shutdown.

Updates #48642

Change-Id: I2f7005f3f3037e6563745731bb2693923b654004
GitHub-Last-Rev: f6d885aa37
GitHub-Pull-Request: golang/go#52823
Reviewed-on: https://go-review.googlesource.com/c/go/+/405454
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
2022-05-11 23:44:16 +00:00
Xiaodong Liu
ec5bdefd0a cmd/compile/internal/ssa{,/gen}: define rules and operation on loong64
The rules and operation definition is used to generate rewrite functions
and OpKind type constant.

Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: Ia362ed7ba5d84046697aadbc8d6d4cbe495f6076
Reviewed-on: https://go-review.googlesource.com/c/go/+/367039
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
2022-05-11 23:39:27 +00:00
Tobias Klauser
f2cd6d60ae net/netip: reduce allocations in Addr.String for v4-in-v6 addresses
ip.Unmap will always return an Addr with ip.z == z4 in case of an
v4-in-v6 address. Thus, Addr.string4 can be called directly without the
additional indirection.

name                      old time/op    new time/op    delta
IPString/v6_v4-4             108ns ± 3%      74ns ± 4%  -31.23%  (p=0.000 n=9+10)
IPStringExpanded/v6_v4-4    89.6ns ± 6%    77.2ns ± 3%  -13.91%  (p=0.000 n=10+10)
AddrPortString/v6_v4-4       253ns ± 8%     197ns ± 3%  -22.13%  (p=0.000 n=10+10)

name                      old alloc/op   new alloc/op   delta
IPString/v6_v4-4             40.0B ± 0%     24.0B ± 0%  -40.00%  (p=0.000 n=10+10)
IPStringExpanded/v6_v4-4     48.0B ± 0%     48.0B ± 0%     ~     (all equal)
AddrPortString/v6_v4-4       77.0B ± 0%     61.0B ± 0%  -20.78%  (p=0.000 n=10+10)

name                      old allocs/op  new allocs/op  delta
IPString/v6_v4-4              2.00 ± 0%      1.00 ± 0%  -50.00%  (p=0.000 n=10+10)
IPStringExpanded/v6_v4-4      1.00 ± 0%      1.00 ± 0%     ~     (all equal)
AddrPortString/v6_v4-4        4.00 ± 0%      3.00 ± 0%  -25.00%  (p=0.000 n=10+10)

Change-Id: Id4affaf7a493aa11579c48721294f2e5889a8bef
Reviewed-on: https://go-review.googlesource.com/c/go/+/403914
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
2022-05-11 23:26:11 +00:00
Xiaodong Liu
83ee6c1d16 cmd/compile/internal/ssa: increase the bit width of BlockKind type
After the BlockKind of loong64 is introduced, it exceeds the maximum
range that int8 can represent.

Contributors to the loong64 port are:
  Weining Lu <luweining@loongson.cn>
  Lei Wang <wanglei@loongson.cn>
  Lingqin Gong <gonglingqin@loongson.cn>
  Xiaolin Zhao <zhaoxiaolin@loongson.cn>
  Meidan Li <limeidan@loongson.cn>
  Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
  Qiyuan Pu <puqiyuan@loongson.cn>
  Guoqi Chen <chenguoqi@loongson.cn>

This port has been updated to Go 1.15.6:
  https://github.com/loongson/go

Updates #46229

Change-Id: I246d9c22334d0ea9e1440d29df05c9ec2d472b30
Reviewed-on: https://go-review.googlesource.com/c/go/+/367038
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-05-11 23:20:01 +00:00
Cherry Mui
6e03de7b83 cmd/asm: require -p flag
CL 391014 requires the compiler to be invoked with the -p flag, to
specify the package path. Later, CL 394217 makes the compiler to
produce an unlinkable object file, so "go tool compile x.go" can
still be used on the command line. This CL does the same for the
assembler, requiring -p, otherwise generating an unlinkable object.

No special case for the main package, as the main package cannot
be only assembly code, and there is no way to tell if it is the
main package from an assembly file.

Now we guarantee that we always have an expanded package path in
the object file. A later CL will delete the name expansion code
in the linker.

Change-Id: I8c10661aaea2ff794614924ead958d80e7e2487d
Reviewed-on: https://go-review.googlesource.com/c/go/+/404298
Run-TryBot: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-11 22:59:46 +00:00
Cherry Mui
b89a194889 cmd/internal/obj: add a flag to not write referenced symbol names in object file
The Go object file references (some of) symbols from other
packages by indices, not by names. The linker doesn't need the
symbol names to do the linking. The names are included in the
object file so it is self-contained and tools (objdump, nm) can
read the referenced symbol names. Including the names increases
object file size. Add a flag to disable it on demand (off by
default).

Change-Id: I143a0eb656997497c750b8eb1541341b2aee8f30
Reviewed-on: https://go-review.googlesource.com/c/go/+/404297
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cherry Mui <cherryyz@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2022-05-11 21:01:09 +00:00