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Commit Graph

47093 Commits

Author SHA1 Message Date
Michael Anthony Knyszek
e0d20e52ee runtime/metrics: expand Read documention with caveats
This change modifies the documentation of Read with some caveats about
reusing the slice passed in to Read as well as with what concurrent
situations are safe.

Change-Id: I76fd31acc67ae384546a8442dfbf9d16b7445cff
Reviewed-on: https://go-review.googlesource.com/c/go/+/275853
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2020-12-10 21:08:17 +00:00
Michael Anthony Knyszek
d0f40d2922 runtime/metrics: add ordering line to supported metrics docs
This change adds an additional line explaining the ordering of the
supported metrics list. It's also necessary to ensure "Supported
metrics" is displayed by godoc as a proper header.

This modification does mean the description test, that ensures
descriptions line up with documentation, needs to change slightly
so it it doesn't read this new line as documentation. Make this
new line the line the test uses to decide when to begin.

Change-Id: I654c1c20e97a80ea79c8eb864445153ce91950bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/275852
Run-TryBot: Michael Knyszek <mknyszek@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
2020-12-10 21:08:10 +00:00
Ian Lance Taylor
6d2b3351f6 test: match gofrontend error messages
fixedbugs/bug13343.go:10:12: error: initialization expressions for ‘b’ and ‘c’ depend upon each other
fixedbugs/bug13343.go:11:9: note: ‘c’ defined here
fixedbugs/bug13343.go:11:9: error: initialization expression for ‘c’ depends upon itself
fixedbugs/bug13343.go:11:9: error: initialization expressions for ‘c’ and ‘b’ depend upon each other
fixedbugs/bug13343.go:10:12: note: ‘b’ defined here

fixedbugs/issue10700.dir/test.go:24:10: error: reference to method ‘Do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:25:10: error: reference to method ‘do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:27:10: error: reference to method ‘Dont’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:28:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:31:10: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:33:13: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:34:10: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:35:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:37:10: error: reference to method ‘Do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:38:10: error: reference to method ‘do’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:40:13: error: reference to undefined field or method ‘do’
fixedbugs/issue10700.dir/test.go:41:10: error: reference to method ‘Dont’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:42:13: error: reference to undefined field or method ‘Dont’
fixedbugs/issue10700.dir/test.go:43:10: error: reference to method ‘secret’ in type that is pointer to interface, not interface
fixedbugs/issue10700.dir/test.go:44:13: error: reference to unexported field or method ‘secret’

fixedbugs/issue10975.go:13:9: error: interface contains embedded non-interface

fixedbugs/issue11326.go:26:17: error: floating-point constant overflow
fixedbugs/issue11326.go:27:17: error: floating-point constant overflow
fixedbugs/issue11326.go:28:17: error: floating-point constant overflow

fixedbugs/issue11361.go:9:11: error: import file ‘fmt’ not found
fixedbugs/issue11361.go:11:11: error: reference to undefined name ‘fmt’

fixedbugs/issue11371.go:12:15: error: floating-point constant truncated to integer
fixedbugs/issue11371.go:13:15: error: integer constant overflow
fixedbugs/issue11371.go:17:15: error: floating-point constant truncated to integer

fixedbugs/issue11590.go:9:17: error: integer constant overflow
fixedbugs/issue11590.go:9:17: error: integer constant overflow
fixedbugs/issue11590.go:10:22: error: complex real part overflow
fixedbugs/issue11590.go:10:22: error: complex real part overflow
fixedbugs/issue11590.go:11:23: error: complex real part overflow
fixedbugs/issue11590.go:11:23: error: complex real part overflow
fixedbugs/issue11590.go:9:19: error: integer constant overflow
fixedbugs/issue11590.go:10:24: error: complex real part overflow
fixedbugs/issue11590.go:11:25: error: complex real part overflow

fixedbugs/issue11610.go:11:7: error: import path is empty
fixedbugs/issue11610.go:12:4: error: invalid character 0x3f in input file
fixedbugs/issue11610.go:14:1: error: expected identifier
fixedbugs/issue11610.go:14:1: error: expected type

fixedbugs/issue11614.go:14:9: error: interface contains embedded non-interface

fixedbugs/issue13248.go:13:1: error: expected operand
fixedbugs/issue13248.go:13:1: error: missing ‘)’
fixedbugs/issue13248.go:12:5: error: reference to undefined name ‘foo’

fixedbugs/issue13266.go:10:8: error: package name must be an identifier
fixedbugs/issue13266.go:10:8: error: expected ‘;’ or newline after package clause
fixedbugs/issue13266.go:10:8: error: expected declaration

fixedbugs/issue13273.go:50:18: error: expected ‘chan’
fixedbugs/issue13273.go:53:24: error: expected ‘chan’

fixedbugs/issue13274.go:11:58: error: expected ‘}’

fixedbugs/issue13365.go:14:19: error: index expression is negative
fixedbugs/issue13365.go:15:21: error: index expression is negative
fixedbugs/issue13365.go:16:22: error: index expression is negative
fixedbugs/issue13365.go:19:13: error: some element keys in composite literal are out of range
fixedbugs/issue13365.go:22:19: error: incompatible type for element 1 in composite literal
fixedbugs/issue13365.go:23:21: error: incompatible type for element 1 in composite literal
fixedbugs/issue13365.go:24:22: error: incompatible type for element 1 in composite literal

fixedbugs/issue13415.go:14:5: error: redefinition of ‘x’
fixedbugs/issue13415.go:14:5: note: previous definition of ‘x’ was here
fixedbugs/issue13415.go:14:5: error: ‘x’ declared but not used

fixedbugs/issue13471.go:12:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:13:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:14:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:15:24: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:16:23: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:18:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:19:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:20:26: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:21:25: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:22:24: error: floating-point constant truncated to integer
fixedbugs/issue13471.go:24:24: error: floating-point constant truncated to integer

fixedbugs/issue13821b.go:18:12: error: incompatible types in binary expression
fixedbugs/issue13821b.go:19:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:20:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:21:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:22:13: error: incompatible types in binary expression
fixedbugs/issue13821b.go:24:12: error: incompatible types in binary expression

fixedbugs/issue14006.go:24:18: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:30:18: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:37:22: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:43:22: error: expected ‘;’ or ‘}’ or newline
fixedbugs/issue14006.go:59:17: note: previous definition of ‘labelname’ was here
fixedbugs/issue14006.go:64:17: error: label ‘labelname’ already defined
fixedbugs/issue14006.go:24:17: error: value computed is not used
fixedbugs/issue14006.go:30:17: error: value computed is not used
fixedbugs/issue14006.go:37:20: error: value computed is not used
fixedbugs/issue14006.go:43:20: error: value computed is not used
fixedbugs/issue14006.go:59:17: error: label ‘labelname’ defined and not used

fixedbugs/issue14010.go:13:14: error: invalid left hand side of assignment
fixedbugs/issue14010.go:14:14: error: invalid left hand side of assignment
fixedbugs/issue14010.go:14:9: error: invalid use of type

fixedbugs/issue14321.go:30:10: error: method ‘F’ is ambiguous in type ‘C’
fixedbugs/issue14321.go:31:10: error: ‘G’ is ambiguous via ‘A’ and ‘B’
fixedbugs/issue14321.go:33:10: error: type ‘C’ has no method ‘I’

fixedbugs/issue8183.go:12:14: error: integer constant overflow

fixedbugs/issue9036.go:21:12: error: invalid prefix for floating constant
fixedbugs/issue9036.go:22:12: error: invalid prefix for floating constant

fixedbugs/issue9076.go:14:5: error: incompatible type in initialization (cannot use type uintptr as type int32)
fixedbugs/issue9076.go:15:5: error: incompatible type in initialization (cannot use type uintptr as type int32)

For issue9083.go avoid an error about a variable that is set but not used.

fixedbugs/issue9370.go:105:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:106:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:107:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:108:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:109:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:110:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:112:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:113:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:114:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:115:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:116:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:117:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:119:13: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:119:18: error: cannot use ‘_’ as value
fixedbugs/issue9370.go:36:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:39:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:43:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:46:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:50:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:53:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:56:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:57:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:58:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:59:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:60:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:61:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:65:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:68:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:70:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:71:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:72:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:73:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:74:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:75:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:77:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:78:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:79:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:80:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:81:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:82:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:84:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:85:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:86:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:87:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:88:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:89:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:91:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:92:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:93:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:94:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:95:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:96:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:98:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:99:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go💯15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:101:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:102:15: error: invalid operation (func can only be compared to nil)
fixedbugs/issue9370.go:103:15: error: invalid comparison of non-ordered type
fixedbugs/issue9370.go:121:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:122:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:123:15: error: incompatible types in binary expression
fixedbugs/issue9370.go:124:15: error: incompatible types in binary expression

Change-Id: I4089de4919112b08f5f2bbec20f84fcc7dbe3955
Reviewed-on: https://go-review.googlesource.com/c/go/+/276832
Trust: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-10 18:34:40 +00:00
Dmitri Shuralyov
e5522c882d std: update golang.org/x/net to 20201209123823-ac852fbbde11
Done with:

	go get -d golang.org/x/net@latest
	go mod tidy
	go mod vendor
	go generate -run bundle std

The cmd module was updated as well, but go mod tidy undoes the change
because the x/net module doesn't contribute any packages to cmd module.
cmd/internal/moddeps.TestDependencyVersionsConsistent is happy with it:

	// It's ok if there are undetected differences in modules that do not
	// provide imported packages: we will not have to pull in any backports of
	// fixes to those modules anyway.

Fixes #31192.
Updates #42498.

Change-Id: If303c9a7aa2ce8c2553fcb1ced7fccc9e6652ad6
Reviewed-on: https://go-review.googlesource.com/c/go/+/277012
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
2020-12-10 18:27:38 +00:00
Hein Khant Zaw
422dc83baa database/sql: fix typo in comment
Fixes #43116

Change-Id: Ib04fab6ae03f322aa1508ec00523f628d891247a
GitHub-Last-Rev: 0a86e665b2
GitHub-Pull-Request: golang/go#43122
Reviewed-on: https://go-review.googlesource.com/c/go/+/276992
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
2020-12-10 18:23:15 +00:00
Robert Griesemer
ddf44904f1 [dev.typeparams] test: exclude 32bit-specific test that fails on 32bit platforms (fix build)
Change-Id: I4f1d5d34dd9b26cea8e837a8ff7e833e02c913e1
Reviewed-on: https://go-review.googlesource.com/c/go/+/276815
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
2020-12-10 16:47:54 +00:00
Than McIntosh
56b783ad94 cmd/go, cmd/asm: pass -linkshared to assembler for shared linkage builds
When the -linkshared build mode is in effect, the Go command passes
the "-linkshared" command line option to the compiler so as to insure
special handling for things like builtin functions (which may appear
in a shared library and not the main executable). This patch extends
this behavior to the assembler, since the assembler may also wind up
referencing builtins when emitting a stack-split prolog.

Fixes #43107.

Change-Id: I56eaded79789b083f3c3d800fb140353dee33ba9
Reviewed-on: https://go-review.googlesource.com/c/go/+/276932
Trust: Than McIntosh <thanm@google.com>
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Jay Conrod <jayconrod@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-10 16:38:15 +00:00
Cherry Zhang
b110733327 cmd/link: reject too-large relocation addend on darwin/arm64
Mach-O relocation addend is signed 24-bit. If the addend
overflows, it is better to fail the build than emitting an
incorrect binary. (I'm still working on a fix.)

Updates #42738.

Change-Id: I647f0cd4f6b84d9ac75ef3bf36673bea01dfc211
Reviewed-on: https://go-review.googlesource.com/c/go/+/276694
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-10 15:37:33 +00:00
Cherry Zhang
0aba8f24cb cmd/link: truncate file after code signature
When external linking, in case that the external linker generates
a code signature with a different size (e.g. as it uses a
different identifier), truncate the file after rewriting the code
signature, to make sure that no bytes after the signature (which
will invalidate the signature).

Fixes #43105.

Change-Id: I732f949fedd6de42d9f3cf6d017f7ba3f4e59e7a
Reviewed-on: https://go-review.googlesource.com/c/go/+/276693
Trust: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
2020-12-10 15:37:19 +00:00
Keith Randall
6c64b6db68 cmd/compile: don't constant fold divide by zero
It just makes the compiler crash. Oops.

Fixes #43099

Change-Id: Id996c14799c1a5d0063ecae3b8770568161c2440
Reviewed-on: https://go-review.googlesource.com/c/go/+/276652
Trust: Keith Randall <khr@golang.org>
Run-TryBot: Keith Randall <khr@golang.org>
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Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-10 03:18:00 +00:00
Robert Griesemer
dbce27d29c [dev.typeparams] cmd/compile/internal/types2: report correct line number for missing key
Use the Key position of a syntax.KeyValueExpr (not the position of the
":") when reporting an error for a missing key.

(In go/types, the KeyValueExpr position is the start of the expression
not the ":", so there this works as expected.)

Change-Id: I74147d245927847274cf4e53b4f03dbb5110c324
Reviewed-on: https://go-review.googlesource.com/c/go/+/276813
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
2020-12-10 00:09:51 +00:00
Robert Griesemer
edf80c4209 [dev.typeparams] cmd/compile/internal/types2: adjusted more error messages for compiler
Triaged and adjusted more test/fixedbugs/* tests.

Change-Id: I80b9ead2445bb8d126b7d79db4bea9ddcb225a84
Reviewed-on: https://go-review.googlesource.com/c/go/+/276812
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
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2020-12-09 23:59:57 +00:00
Robert Griesemer
43c7b214db [dev.typeparams] cmd/compile/internal/types2: adjusted qualified identifier error message for compiler
Also: Triaged/adjusted some more test/fixedbugs tests.
Change-Id: I050847b6dfccc7f301f8100bfdbe84e0487e33fc
Reviewed-on: https://go-review.googlesource.com/c/go/+/276512
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@golang.org>
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2020-12-09 23:56:19 +00:00
Robert Griesemer
6812eae2e2 [dev.typeparams] cmd/compile/internal/types2: adjust init cycle error message for compiler
Enabled some more test/fixedbugs tests.

Change-Id: I02102b698eedfbee582b3234850fb01418ebbf7c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276453
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
2020-12-09 23:55:41 +00:00
Robert Griesemer
810957b155 [dev.typeparams] cmd/compile/internal/types2: adjusted array error message for compiler
Also: Triaged/adjusted some more test/fixedbugs tests.
Change-Id: Idaba1875273d6da6ef82dd8de8edd8daa885d32c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276472
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
2020-12-09 23:54:59 +00:00
Rob Findley
89f465c2b5 go/types: avoid endless recursion in the Comparable predicate
This is a port of CL 276374 from the dev.typeparams branch. Avoid an
endless recursion in Comparable by tracking types that have already been
considered.

Fixes #43088

Change-Id: I927b29ac544df9bfb5c8c04699d57fafe6cfff73
Reviewed-on: https://go-review.googlesource.com/c/go/+/276552
Run-TryBot: Robert Findley <rfindley@google.com>
Trust: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2020-12-09 21:05:24 +00:00
Russ Cox
f1980efb92 all: update to use os.ReadDir where appropriate
os.ReadDir is a replacement for ioutil.ReadDir that returns
a slice of fs.DirEntry instead of fs.FileInfo, meaning it is the
more efficient form.

This CL updates call sites throughout the Go source tree
wherever possible. As usual, code built using the Go 1.4
bootstrap toolchain is not included. There is also a use in
go/build that appears in the public API and can't be changed,
at least not without additional changes.

Fixes #42026.

Change-Id: Icfc9dd52c6045020f6830e22c72128499462d561
Reviewed-on: https://go-review.googlesource.com/c/go/+/266366
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-09 19:12:27 +00:00
Russ Cox
4f1b0a44cb all: update to use os.ReadFile, os.WriteFile, os.CreateTemp, os.MkdirTemp
As part of #42026, these helpers from io/ioutil were moved to os.
(ioutil.TempFile and TempDir became os.CreateTemp and MkdirTemp.)

Update the Go tree to use the preferred names.

As usual, code compiled with the Go 1.4 bootstrap toolchain
and code vendored from other sources is excluded.

ReadDir changes are in a separate CL, because they are not a
simple search and replace.

For #42026.

Change-Id: If318df0216d57e95ea0c4093b89f65e5b0ababb3
Reviewed-on: https://go-review.googlesource.com/c/go/+/266365
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2020-12-09 19:12:23 +00:00
Matthew Dempsky
63bc23b545 [dev.regabi] cmd/compile: first start towards using Ident
This CL adds Ident, which will eventually replace *Name and *PkgName
within the AST for representing uses of declared names. (Originally, I
intended to call it "IdentExpr", but neither go/ast nor
cmd/compile/internal/syntax include the "Expr" suffix for their
respective types.)

To start, this CL converts two uses of *Name to *Ident: the tag
identifier in a TypeSwitchGuard (which doesn't actually declare a
variable by itself), and the not-yet-known placeholder ONONAME
returned by oldname to stand-in for identifiers that might be declared
later in the package.

The TypeSwitchGuard's Name's Used flag was previously used for
detecting whether none of the per-clause variables were used. To avoid
bloating all Idents for this rare use, a "Used" bool is added to
TypeSwitchGuard instead. Eventually it could maybe be packed into
miniNode.bits, but for now this is good enough.

Passes buildall w/ toolstash -cmp.

Change-Id: I393284d86757cbbebd26e1320c7354e2bdcb30b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/276113
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-09 17:17:53 +00:00
Matthew Dempsky
eae8fd519b [dev.regabi] cmd/compile: iexport debug crumbs for toolstash
Prints offsets for declarations, inline bodies, and strings when -v is
used. Still not much, but hopefully useful for narrowing down the
cause of export data differences.

Change-Id: I9b2e4a3d55b92823fa45a39923e8c4b25303693c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276112
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-09 17:17:31 +00:00
Russ Cox
837b35cc55 [dev.regabi] cmd/compile: adjust IR representations
Based on actually using the IR when prototyping adding
type assertions, a few changes to improve it:

- Merge DeferStmt and GoStmt, since they are variants of one thing.
- Introduce LogicalExpr for && and ||, since they (alone) need an init list before Y.
- Add an explicit op to various constructors to make them easier to use.
- Add separate StructKeyExpr - it stores Value in a different abstract location (Left) than KeyExpr (Right).
- Export all fields for use by rewrites (and later reflection).

Passes buildall w/ toolstash -cmp.

Change-Id: Iefbff2386d2bb9ef511ce53b7f92ff6c709dc991
Reviewed-on: https://go-review.googlesource.com/c/go/+/275883
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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2020-12-09 17:05:32 +00:00
Russ Cox
0c49440664 [dev.regabi] cmd/compile: arrange for walkstmt, walkexpr, to return from switch cases
Ending them in a returning switch makes it safe for each case
to do an appropriate type assertion.

Passes buildall w/ toolstash -cmp.

Change-Id: I55d8f0a555006104164d84d27822aa8c5ad68515
Reviewed-on: https://go-review.googlesource.com/c/go/+/275882
Trust: Russ Cox <rsc@golang.org>
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2020-12-09 17:05:19 +00:00
Russ Cox
4090af83c5 [dev.regabi] cmd/compile: use reflection in ir.Dump
ir.Dump is the final (I think!) piece of the compiler that was walking
nodes using Left, Right etc without knowing what they meant.
This CL uses reflection to walk nodes without knowing what they mean instead.
One benefit is that we can print actual meanings (field names).

While we are here, I could not resist fixing a long-standing mental TODO:
make the line number more clearly a line number. I've forgotten where the
line number is in the dumps far too many times in the last decade.

As a small example, here is a fragment of go tool compile -W test/235.go:

.   FOR l(28) tc(1)
.   .   LT-init
.   .   .   AS l(28) tc(1)
.   .   .   .   NAME-main..autotmp_4 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   .   .   LEN l(28) tc(1) int
.   .   .   .   .   NAME-main.xs g(2) l(26) x(0) class(PPARAM) esc(no) tc(1) used SLICE-[]uint64
.   .   LT l(28) tc(1) hascall bool
.   .   .   NAME-main.i g(4) l(28) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   NAME-main..autotmp_4 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   BLOCK l(28)
.   .   BLOCK-list
.   .   .   ASOP-ADD l(28) tc(1) implicit(true) int
.   .   .   .   NAME-main.i g(4) l(28) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   LITERAL-1 l(28) tc(1) int
.   FOR-body
.   .   VARKILL l(28) tc(1)
.   .   .   NAME-main..autotmp_4 l(28) x(0) class(PAUTO) esc(N) tc(1) assigned used int
.   .   IF l(29) tc(1)
.   .   .   LT l(29) tc(1) bool
.   .   .   .   INDEX l(29) tc(1) uint64
.   .   .   .   .   NAME-main.xs g(2) l(26) x(0) class(PPARAM) esc(no) tc(1) used SLICE-[]uint64
.   .   .   .   .   NAME-main.i g(4) l(28) x(0) class(PAUTO) esc(no) tc(1) assigned used int
.   .   .   .   NAME-main.m g(3) l(27) x(0) class(PAUTO) esc(no) tc(1) assigned used uint64
.   .   IF-body
.   .   .   AS l(30) tc(1)
.   .   .   .   NAME-main.m g(3) l(27) x(0) class(PAUTO) esc(no) tc(1) assigned used uint64
.   .   .   .   INDEX l(30) tc(1) uint64
.   .   .   .   .   NAME-main.xs g(2) l(26) x(0) class(PPARAM) esc(no) tc(1) used SLICE-[]uint64
.   .   .   .   .   NAME-main.i g(4) l(28) x(0) class(PAUTO) esc(no) tc(1) assigned used int

and here it is after this CL:

.   FOR tc(1) # 235.go:28
.   FOR-Cond
.   .   LT-init
.   .   .   AS tc(1) # 235.go:28
.   .   .   .   NAME-main..autotmp_4 x(0) class(PAUTO) esc(N) tc(1) assigned used int # 235.go:28
.   .   .   .   LEN tc(1) int # 235.go:28 int
.   .   .   .   .   NAME-main.xs g(2) x(0) class(PPARAM) esc(no) tc(1) used SLICE-[]uint64 # 235.go:26
.   .   LT tc(1) hascall bool # 235.go:28 bool
.   .   .   NAME-main.i g(4) x(0) class(PAUTO) esc(no) tc(1) assigned used int # 235.go:28
.   .   .   NAME-main..autotmp_4 x(0) class(PAUTO) esc(N) tc(1) assigned used int # 235.go:28
.   FOR-Post
.   .   BLOCK # 235.go:28
.   .   BLOCK-List
.   .   .   ASOP-ADD tc(1) implicit(true) int # 235.go:28 int
.   .   .   .   NAME-main.i g(4) x(0) class(PAUTO) esc(no) tc(1) assigned used int # 235.go:28
.   .   .   .   LITERAL-1 tc(1) int # 235.go:28
.   FOR-Body
.   .   VARKILL tc(1) # 235.go:28
.   .   .   NAME-main..autotmp_4 x(0) class(PAUTO) esc(N) tc(1) assigned used int # 235.go:28
.   .   IF tc(1) # 235.go:29
.   .   IF-Cond
.   .   .   LT tc(1) bool # 235.go:29 bool
.   .   .   .   INDEX tc(1) uint64 # 235.go:29 uint64
.   .   .   .   .   NAME-main.xs g(2) x(0) class(PPARAM) esc(no) tc(1) used SLICE-[]uint64 # 235.go:26
.   .   .   .   .   NAME-main.i g(4) x(0) class(PAUTO) esc(no) tc(1) assigned used int # 235.go:28
.   .   .   .   NAME-main.m g(3) x(0) class(PAUTO) esc(no) tc(1) assigned used uint64 # 235.go:27
.   .   IF-Body
.   .   .   AS tc(1) # 235.go:30
.   .   .   .   NAME-main.m g(3) x(0) class(PAUTO) esc(no) tc(1) assigned used uint64 # 235.go:27
.   .   .   .   INDEX tc(1) uint64 # 235.go:30 uint64
.   .   .   .   .   NAME-main.xs g(2) x(0) class(PPARAM) esc(no) tc(1) used SLICE-[]uint64 # 235.go:26
.   .   .   .   .   NAME-main.i g(4) x(0) class(PAUTO) esc(no) tc(1) assigned used int # 235.go:28

Note in particular the clear marking of FOR-Cond, FOR-Post, FOR-Body compared to the original.

The only changes to a few test files are the improved field name lines, and of course the line numbers.

Passes buildall w/ toolstash -cmp.

Change-Id: I5b654d9d8ee898976d4c387742ea688a082bac78
Reviewed-on: https://go-review.googlesource.com/c/go/+/275785
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
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2020-12-09 17:05:13 +00:00
Russ Cox
e2d278bfeb [dev.regabi] cmd/compile: two small fixes
Addressing comments from CL 275434 and CL 275444.
I forgot to run "git rw" to rebase the fixup CLs down before
running "git submit".

Change-Id: Ideaa2340a81511491c096555c6834cd9bdb267d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/275881
Trust: Russ Cox <rsc@golang.org>
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2020-12-09 17:04:54 +00:00
Dmitri Shuralyov
5627a4dc30 runtime/metrics: simplify test to support more environments
go test sets the working directory to that of the package being tested,
so opening one of the package source files can be done in a simpler way.
This also allows the test to run in more environments, for example when
GOROOT_FINAL¹ is set.

Also remove the testenv.HasSrc-like check for Go source. The doc.go
file is a part of the package being built and tested, so it's expected
to be available. If it's important for this test to handle when a test
binary is built with go test -c and executed elsewhere without package
source files, something more than testenv.HasSrc would be needed.

¹ https://golang.org/cmd/go/#hdr-Environment_variables

Fixes #43085.

Change-Id: Ie6ade395a8fc7beebdadbad6f4873800138dfc26
Reviewed-on: https://go-review.googlesource.com/c/go/+/276452
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Trust: Dmitri Shuralyov <dmitshur@golang.org>
2020-12-09 16:57:37 +00:00
Robert Griesemer
c32566c336 [dev.typeparams] cmd/compile/internal/types2: avoid endless recursion in Comparable predicate
Use a map to detect recursive types.
With this we can now typecheck fixedbugs/issue8501.go.

Updates #43088.

Change-Id: I7fad6ccf6c94268473ff72b09a3158e13a7f4cc3
Reviewed-on: https://go-review.googlesource.com/c/go/+/276374
Trust: Robert Griesemer <gri@golang.org>
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2020-12-09 16:56:16 +00:00
Ikko Ashimine
db6032dd0c cmd/compile: fix message typo
occurences -> occurrences

Change-Id: Ia81671f5de8a24ddd303a77b4580e8c726f29122
GitHub-Last-Rev: 11f9ab9f8c
GitHub-Pull-Request: golang/go#43097
Reviewed-on: https://go-review.googlesource.com/c/go/+/276612
Reviewed-by: Robert Griesemer <gri@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2020-12-09 16:38:26 +00:00
Michael Fraenkel
854a2f8e01 net/http: add connections back that haven't been canceled
Issue #41600 fixed the issue when a second request canceled a connection
while the first request was still in roundTrip.
This uncovered a second issue where a request was being canceled (in
roundtrip) but the connection was put back into the idle pool for a
subsequent request.
The fix is the similar except its now in readLoop instead of roundTrip.
A persistent connection is only added back if it successfully removed
the cancel function; otherwise we know the roundTrip has started
cancelRequest.

Fixes #42942

Change-Id: Ia56add20880ccd0c1ab812d380d8628e45f6f44c
Reviewed-on: https://go-review.googlesource.com/c/go/+/274973
Trust: Dmitri Shuralyov <dmitshur@golang.org>
Trust: Damien Neil <dneil@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
2020-12-09 03:06:41 +00:00
Haoran Luo
6fa06d960b runtime: prevent stack growth after fork in runtime.sigfillset
This fixes the unexpected growth of stack in child process, which
is caused by stack checking code in runtime.sigfillset called from
runtime.sigset while clearing the signal handlers in child process.

The redundant stack checking code is generated due to missing
'//go:nosplit' directive that should be annotated for
runtime.sigfillset.

Fixes #43066
Updates #21314

Change-Id: I9483a962a4b0747074313991841e2440ee32198c
Reviewed-on: https://go-review.googlesource.com/c/go/+/276173
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Michael Pratt <mpratt@google.com>
Reviewed-by: Austin Clements <austin@google.com>
2020-12-09 03:01:58 +00:00
Keith Randall
ae9b442df2 doc: add description of new framepointer vet check
Update #43014

Change-Id: I5fbfaa16e6acb8859fd0b1188f532f5a225f6349
Reviewed-on: https://go-review.googlesource.com/c/go/+/276373
Trust: Keith Randall <khr@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-12-09 01:34:53 +00:00
Keith Randall
31496cfde5 cmd/vet: vendor in x/tools, enable framepointer vet check
Vendor in latest x/tools.
Add framepointer vet check to vet.

Fixes #43014

Change-Id: Ife72f85b1261aa60c0028041c58040d60a40918a
Reviewed-on: https://go-review.googlesource.com/c/go/+/276372
Trust: Keith Randall <khr@golang.org>
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Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-08 22:58:14 +00:00
Rob Findley
6015c4e543 [dev.typeparams] go/*: add TODOs from CLs importing dev.go2go changes
With the plurality of CLs importing dev.go2go changes it's getting hard
to track all of the code review comments that were deferred for later
consideration. Add some TODOs to capture these comments in the source,
so that they may be more easily located.

Change-Id: I5caf085fec11ca8992b7affe6feb0a7aa202f21f
Reviewed-on: https://go-review.googlesource.com/c/go/+/276254
Trust: Robert Findley <rfindley@google.com>
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2020-12-08 22:00:26 +00:00
Rob Findley
01b76d5fbc go/types: correct error position for inherited const init expressions
This is a port of CL 275517 from the dev.typeparams branch, to fix the
positioning of error messages for invalid const init expressions that
are inherited.

Differences from CL 275517:
 + The inherited flag is added to the constDecl intermediate
   representation.
 + The errpos override is made a positioner, the internal interface
   used by go/types to capture error position and span. For const decls
   errpos is just set to a singular point, but using positioner is
   correct and causes span start and end positions to also be
   overridden.
 + Test cases are updated to assert on just 'overflows', as the go/types
   error message is, for example, "cannot use 255 + iota (untyped int
   constant 256) as byte value in constant declaration (overflows)".
   This is more verbose than the compiler's "constant 256 overflows
   byte", but changing that is out of scope.

Fixes #42991

Change-Id: I0a71d2290f7fff5513f2a6e49b83e6f0f4da30e5
Reviewed-on: https://go-review.googlesource.com/c/go/+/276172
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2020-12-08 19:45:23 +00:00
Rob Findley
b6e678573d [dev.typeparams] go/types: import universe changes from dev.go2go
This is unmodified from the dev.go2go branch, except to remove the aType
embedding.

Change-Id: Id14d97a56d27ea609c43b453e8f9f1cf1a451406
Reviewed-on: https://go-review.googlesource.com/c/go/+/276252
Trust: Robert Findley <rfindley@google.com>
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2020-12-08 17:21:49 +00:00
Austin Clements
48d6275952 doc/go1.16: improve channel race detector changes description
Based on text from Daniel Fava.

For #40700.

Change-Id: I0bc3a4340b8a777ff96d3cf226a7d51d3f65db2c
Reviewed-on: https://go-review.googlesource.com/c/go/+/275786
Trust: Austin Clements <austin@google.com>
Reviewed-by: Daniel Fava <danielsfava@gmail.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
2020-12-08 15:58:23 +00:00
Rob Findley
14dc2d2345 [dev.typeparams] go/types: import the Type API from dev.go2go
Import the Type changes from the dev.go2go branch, as well as a minimal
set of related changes to the Checker code so that tests pass. This
involved making some decisions about which functionality to import, with
some parts of the Type API (for example instance.expand) carved out as
they pulled in too many additional changes.

Minimal changes were made from the dev.go2go version. Notably:
 + The aType helper struct is removed. It could have been removed in CL
   274852 but was missed.
 + writeTParamList was cleaned up for the bracketed parameter style.
 + Some interface iteration functions were simplified.

One observation along the way is that, especially with converter methods
removed from the Type interface, we should probably avoid storing the
Checker on Type instances for lazy evaluation. If a function is only
valid during a checking pass, we should make it a method on Checker
instead of a method on the Type instance. Rather than do this now, which
would make later changes harder to import, I left a couple TODOs to
address this later.

Change-Id: Ie669224614269874474d87e46c68216cb06b6d0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275441
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
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2020-12-08 15:21:40 +00:00
Matthew Dempsky
dbf2fc8cff [dev.regabi] cmd/compile: replace many uses of ir.Node with *ir.Name
This commit adds exactly two "n := n.(*ir.Name)" statements, that are
each immediately preceded by a "case ir.ONAME:" clause in an n.Op()
switch. The rest of the changes are simply replacing "ir.Node" to
"*ir.Name" and removing now unnecessary "n.(*ir.Name)" type
assertions, exposing the latent typing details.

Passes buildall w/ toolstash -cmp.

Updates #42982.

Change-Id: I8ea3bbb7ddf0c7192245cafa49a19c0e7a556a39
Reviewed-on: https://go-review.googlesource.com/c/go/+/275791
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Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-08 01:47:13 +00:00
Matthew Dempsky
bb31c75343 [dev.regabi] cmd/compile: ir.Node is no longer an ssa.Aux
After the previous rewrite, we can now remove CanBeAnSSASym and
CanBeAnSSAAux from the generic Node interface, and declare them just
on *ir.Name.

Updates #42982.

Change-Id: I865771fd30c95c009740410844f20ade08648343
Reviewed-on: https://go-review.googlesource.com/c/go/+/275790
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
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Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-08 01:47:04 +00:00
Matthew Dempsky
6db970e20a [dev.regabi] cmd/compile: rewrite Aux uses of ir.Node to *ir.Name [generated]
Now that the only remaining ir.Node implementation that is stored
(directly) into ssa.Aux, we can rewrite all of the conversions between
ir.Node and ssa.Aux to use *ir.Name instead.

rf doesn't have a way to rewrite the type switch case clauses, so we
just use sed instead. There's only a handful, and they're the only
times that "case ir.Node" appears anyway.

The next CL will move the tag method declarations so that ir.Node no
longer implements ssa.Aux.

Passes buildall w/ toolstash -cmp.

Updates #42982.

[git-generate]
cd src/cmd/compile/internal
sed -i -e 's/case ir.Node/case *ir.Name/' gc/plive.go */ssa.go

cd ssa
rf '
ex . ../gc {
  import "cmd/compile/internal/ir"

  var v *Value
  v.Aux.(ir.Node) -> v.Aux.(*ir.Name)

  var n ir.Node
  var asAux func(Aux)
  strict n        # only match ir.Node-typed expressions; not *ir.Name
  implicit asAux  # match implicit assignments to ssa.Aux
  asAux(n)        -> n.(*ir.Name)
}
'

Change-Id: I3206ef5f12a7cfa37c5fecc67a1ca02ea4d52b32
Reviewed-on: https://go-review.googlesource.com/c/go/+/275789
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2020-12-08 01:46:57 +00:00
Matthew Dempsky
1c8943a6ad [dev.regabi] cmd/compile: introduce FwdRefAux for wrapping ir.Node as ssa.Aux
OpFwdRef is the only SSA value that needs the ability to store an
arbitrary ir.Node in its Aux field. Every other SSA value always uses
an *ir.Name.

This CL introduces FwdRefAux, which wraps an ir.Node and implements
the ssa.Aux tag interface, so that a subsequent refactoring can change
ir.Node to not implement ssa.Aux.

Passes buildall w/ toolstash -cmp.

Updates #42982.

Change-Id: Id1475b28847579573cd376e82f28761d84cd1c23
Reviewed-on: https://go-review.googlesource.com/c/go/+/275788
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2020-12-08 01:46:48 +00:00
Joel Sing
9c91cab0da runtime: correct sigfwd on openbsd/mips64
Position independent code expects that R25 (aka $t9) contains the address of the
called function. As such, use R25 when calling from sigfwd.

Change-Id: I66b2b9bfa1f1bb983c7385eb2eaa19d9cd87d9fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/275893
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-08 01:46:45 +00:00
Matthew Dempsky
dcec658f6c [dev.regabi] cmd/compile: change LocalSlot.N to *ir.Name
This was already documented as always being an ONAME, so it just
needed a few type assertion changes.

Passes buildall w/ toolstash -cmp.

Updates #42982.

Change-Id: I61f4b6ebd57c43b41977f4b37b81fe94fb11a723
Reviewed-on: https://go-review.googlesource.com/c/go/+/275757
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Russ Cox <rsc@golang.org>
Trust: Matthew Dempsky <mdempsky@google.com>
2020-12-08 01:46:40 +00:00
Matthew Dempsky
1a98ab0e2d [dev.regabi] cmd/compile: add ssa.Aux tag interface for Value.Aux
It's currently hard to automate refactorings around the Value.Aux
field, because we don't have any static typing information for it.
Adding a tag interface will make subsequent CLs easier and safer.

Passes buildall w/ toolstash -cmp.

Updates #42982.

Change-Id: I41ae8e411a66bda3195a0957b60c2fe8a8002893
Reviewed-on: https://go-review.googlesource.com/c/go/+/275756
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>
2020-12-08 01:46:31 +00:00
Austin Clements
6362d01c15 doc/go1.16: update linker stats
benchstat v2 comparison vs HEAD:

                    1.15.6                    1.16
                    sec/op       sec/op           vs base
LinkIstio-48        4.44 ± 1%   3.43 ± 1%  -22.79% (p=0.000 n=20)
LinkKubelet-48     10.89 ± 1%   8.42 ± 1%  -22.63% (p=0.000 n=20)
LinkDiscovery-48    1.43 ± 1%   1.06 ± 1%  -25.68% (p=0.000 n=20)
LinkIstio-4         4.50 ± 1%   3.52 ± 1%  -21.84% (p=0.000 n=20)
LinkKubelet-4      10.84 ± 2%   8.55 ± 1%  -21.09% (p=0.000 n=20)
LinkDiscovery-4     1.45 ± 2%   1.11 ± 2%  -23.81% (p=0.000 n=20)

                     1.15.6                      1.16
                  max-RSS-bytes  max-RSS-bytes         vs base
LinkIstio-48       1085Mi ± 1%    1006Mi ± 0%    -7.32% (p=0.000 n=20)
LinkKubelet-48     1.60Gi ± 5%    1.46Gi ± 1%    -8.57% (p=0.000 n=20)
LinkDiscovery-48    392Mi ± 1%     362Mi ± 2%    -7.71% (p=0.000 n=20)
LinkIstio-4        1022Mi ± 6%     958Mi ± 1%    -6.26% (p=0.000 n=20)
LinkKubelet-4      1.63Gi ± 2%    1.44Gi ± 0%   -11.44% (p=0.000 n=20)
LinkDiscovery-4     400Mi ± 0%     353Mi ± 1%   -11.83% (p=0.000 n=20)

                     1.15.6                    1.16
                   exe-bytes     exe-bytes           vs base
LinkIstio-48       97.7Mi ± 0%   93.4Mi ± 0%  -4.38% (p=0.000 n=20)
LinkKubelet-48      129Mi ± 0%    127Mi ± 0%  -1.17% (p=0.000 n=20)
LinkDiscovery-48   31.9Mi ± 0%   29.1Mi ± 0%  -8.67% (p=0.000 n=20)
LinkIstio-4        97.7Mi ± 0%   93.4Mi ± 0%  -4.38% (p=0.000 n=20)
LinkKubelet-4       129Mi ± 0%    127Mi ± 0%  -1.17% (p=0.000 n=20)
LinkDiscovery-4    31.9Mi ± 0%   29.1Mi ± 0%  -8.67% (p=0.000 n=20)

https://perf.golang.org/search?q=upload:20201207.6

For #40700.

Change-Id: I3f7b3e08db4fb7980d2472f15e5fc04503e95ea0
Reviewed-on: https://go-review.googlesource.com/c/go/+/275912
Trust: Austin Clements <austin@google.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-12-07 23:44:44 +00:00
Ian Lance Taylor
9b8c272558 reflect: document multiple keys in struct tags
For #40281
Fixes #42959

Change-Id: Ibc4769fda1592a1373ec720ea30baf319c0a0136
Reviewed-on: https://go-review.googlesource.com/c/go/+/274448
Trust: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
2020-12-07 22:16:21 +00:00
Keith Randall
63722da46b [dev.regabi] cmd/compile: fix comment
Russ, is this what you meant?

Change-Id: I27d2847811c6eabd94358e435eb3eb4bc8cfaa9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275712
Trust: Keith Randall <khr@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
2020-12-07 21:43:46 +00:00
Russ Cox
7ad6596c47 io/fs: fix Sub method error text
Noticed in (and alternative to) CL 275520.

Change-Id: If6c107ee9928dd1910facd4dc66da7234cb91c39
Reviewed-on: https://go-review.googlesource.com/c/go/+/275879
Trust: Russ Cox <rsc@golang.org>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
2020-12-07 21:01:46 +00:00
Russ Cox
6d783e7440 [dev.regabi] cmd/compile: export all Node fields [generated]
The plan was always to export them once we remove the getters
and setters, but do it a bit early, with _ suffixes as needed, so that
the reflection-based ir.Dump can access the fields.

Passes buildall w/ toolstash -cmp.

[git-generate]
cd src/cmd/compile/internal/ir
rf '
	mv AddStringExpr.list AddStringExpr.List_
	mv BlockStmt.list BlockStmt.List_
	mv CallExpr.body CallExpr.Body_
	mv CaseStmt.list CaseStmt.List_
	mv CaseStmt.body CaseStmt.Body_
	mv ClosureExpr.fn ClosureExpr.Func_
	mv CompLitExpr.list CompLitExpr.List_
	mv ForStmt.body ForStmt.Body_
	mv Func.body Func.Body_
	mv IfStmt.body IfStmt.Body_
	mv InlinedCallExpr.body InlinedCallExpr.Body_
	mv RangeStmt.body RangeStmt.Body_
	mv SliceExpr.list SliceExpr.List_
	mv SliceHeaderExpr.lenCap SliceHeaderExpr.LenCap_
	mv TypeSwitchGuard.name TypeSwitchGuard.Name_
'
go generate

Change-Id: I06e65920cecbcc51bea2254f52fcd7d5c5d0dc90
Reviewed-on: https://go-review.googlesource.com/c/go/+/275784
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-07 20:41:43 +00:00
Russ Cox
2de0af3b1b [dev.regabi] cmd/compile: prepare mknode for rename of Func.body
The next CL will rename Func.body to Func.Body_.
At some point in the future we will rename it to Func.Body.
Make the generator not get confused.

Passes buildall w/ toolstash -cmp.

Change-Id: Iee3f4915889a8287377bf3304d5b9250a909477e
Reviewed-on: https://go-review.googlesource.com/c/go/+/275783
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-07 20:41:37 +00:00
Russ Cox
724374f859 [dev.regabi] cmd/compile: rewrite stale format strings
On ir.Node, ir.Nodes, and ir.Op, # is ignored, so %#v is %v.
On ir.Node, %S is the same as %v.

On types.Type, # is ignored, so %#L is %L, %#v is %v.
On types.Type, 0 is ignored, so %0S is %S.

Rewrite all these using go test cmd/compile -r, plus a
few multiline formats mentioning %0S on types updated by hand.

Now the formats used in the compiler match the documentation
for the format methods, a minor miracle.

Passes buildall w/ toolstash -cmp.

Change-Id: I3d4a3fae543145a68da13eede91166632c5b1ceb
Reviewed-on: https://go-review.googlesource.com/c/go/+/275782
Trust: Russ Cox <rsc@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2020-12-07 20:41:29 +00:00