delta/go-git.git/src/cmd/go/internal/help, branch dev.link

all: implement GO386=softfloat

2020-10-06T22:49:38+00:00

Backstop support for non-sse2 chips now that 387 is gone.

RELNOTE=yes

Change-Id: Ib10e69c4a3654c15a03568f93393437e1939e013
Reviewed-on: https://go-review.googlesource.com/c/go/+/260017
Trust: Keith Randall 
Run-TryBot: Keith Randall 
TryBot-Result: Go Bot 
Reviewed-by: Ian Lance Taylor

all: drop 387 support

2020-10-02T00:00:51+00:00

My last 387 CL. So sad ... ... ... ... not!

Fixes #40255

Change-Id: I8d4ddb744b234b8adc735db2f7c3c7b6d8bbdfa4
Reviewed-on: https://go-review.googlesource.com/c/go/+/258957
Trust: Keith Randall 
Run-TryBot: Keith Randall 
TryBot-Result: Go Bot 
Reviewed-by: Cherry Zhang

all: add GOOS=ios

2020-09-23T18:12:59+00:00

Introduce GOOS=ios for iOS systems. GOOS=ios matches "darwin"
build tag, like GOOS=android matches "linux" and GOOS=illumos
matches "solaris". Only ios/arm64 is supported (ios/amd64 is
not).

GOOS=ios and GOOS=darwin remain essentially the same at this
point. They will diverge at later time, to differentiate macOS
and iOS.

Uses of GOOS=="darwin" are changed to (GOOS=="darwin" || GOOS=="ios"),
except if it clearly means macOS (e.g. GOOS=="darwin" && GOARCH=="amd64"),
it remains GOOS=="darwin".

Updates #38485.

Change-Id: I4faacdc1008f42434599efb3c3ad90763a83b67c
Reviewed-on: https://go-review.googlesource.com/c/go/+/254740
Trust: Cherry Zhang 
Run-TryBot: Cherry Zhang 
TryBot-Result: Go Bot 
Reviewed-by: Austin Clements

cmd/go: include GOMODCACHE in 'go help environment'

2020-07-13T17:48:55+00:00

Updates #34527
Fixes #40089

Change-Id: Ie9c8573536e5c31e874d755f4d888ffc805b796f
Reviewed-on: https://go-review.googlesource.com/c/go/+/241275
Run-TryBot: Jay Conrod 
TryBot-Result: Gobot Gobot 
Reviewed-by: Michael Matloob

go/build: move build constraint docs to 'go help buildconstraint'

2020-05-29T20:56:20+00:00

CL 228017 added a new help page 'go help buildconstraint' which
summarized the information on build constraints in the go/build
documentation. The summary was almost as long as the go/build
documentation, since there's very little that can be left out.

This CL moves the original go/build documentation to
'go help buildconstraint' to eliminate redundnancy. The text
describing enabled tags is slightly different (targeting command-line
users more than go/build users), but the rest of the documentation is
unchanged.

Fixes #37018

Change-Id: Ic0ed4c6fdae2395dd58852e1600c701247c9c4cc
Reviewed-on: https://go-review.googlesource.com/c/go/+/232981
Run-TryBot: Jay Conrod 
TryBot-Result: Gobot Gobot 
Reviewed-by: Bryan C. Mills

cmd/go: remove GOAMD64 environment variable

2020-05-20T19:21:43+00:00

This removes the GOAMD64 environment variable and its documentation.
The value is instead supplied by a compiled-in constant.

Note that function alignment is also dependent on the value of
the (removed) flag; it is 32 for aligned jumps, 16 if not.
When the flag-dependent logic is removed, it will be 32.

Updates #35881.

Change-Id: Ic41c0b9833d2e8a31fa3ce8067d92aa2f165bf72
Reviewed-on: https://go-review.googlesource.com/c/go/+/231600
Reviewed-by: Austin Clements

cmd/internal/obj/x86: prevent jumps crossing 32 byte boundaries

2020-05-01T19:55:48+00:00

This commit adds a new option to the x86 assembler.  If the
GOAMD64 environment variable is set to alignedjumps (the
default) and we're doing a 64 bit build, the assembler will
make sure that neither stand alone nor macro-fused jumps will
end on or cross 32 byte boundaries.  To achieve this, functions
are aligned on 32 byte boundaries, rather than 16 bytes, and
jump instructions are padded to ensure that they do not
cross or end on 32 byte boundaries.  Jumps are padded
by adding a NOP instruction of the appropriate length before
the jump.

The commit is likely to result in larger binary sizes when
GOAMD64=alignedjumps.  On the binaries tested so far, an
increase of between 1.4% and 1.5% has been observed.

Updates #35881

Co-authored-by: David Chase 

Change-Id: Ief0722300bc3f987098e4fd92b22b14ad6281d91
Reviewed-on: https://go-review.googlesource.com/c/go/+/219357
Reviewed-by: Cherry Zhang 
Run-TryBot: Cherry Zhang 
TryBot-Result: Gobot Gobot

cmd/go: add 'go help buildconstraint'

2020-05-01T15:02:30+00:00

Fixes #37018

Change-Id: I1d32c1cb432bc2d7a4d8d6b5c3a54fee558141ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/228017
Run-TryBot: Bryan C. Mills 
TryBot-Result: Gobot Gobot 
Reviewed-by: Jay Conrod

cmd/go/internal/modget: improve GOINSECURE docs

2020-04-23T13:46:00+00:00

Recommend use of GOINSECURE over -insecure flang and clarify that GOINSECURE
environment variable does not also imply GONOSUMDB.

Updates #37519 by adding documentation as discussed.

Change-Id: Ia8ab6b3ed1aa559343b72e4ca76c372ee6bf1941
GitHub-Last-Rev: 8d86991f0c1a759f45568c1cc6ef6dc41225f2ba
GitHub-Pull-Request: golang/go#38572
Reviewed-on: https://go-review.googlesource.com/c/go/+/229223
Reviewed-by: Bryan C. Mills 
Reviewed-by: Jay Conrod 
Run-TryBot: Bryan C. Mills 
TryBot-Result: Gobot Gobot

cmd/go: document 'go env GOMOD' outside modules

2019-12-09T21:50:59+00:00

In documentation for 'go env GOMOD', note that the path will be
os.DevNull in module-aware mode when no go.mod file is present.

Fixes #36052

Change-Id: I30ced1df02ccefe1970bd856190e79d6f0384375
Reviewed-on: https://go-review.googlesource.com/c/go/+/210577
Run-TryBot: Jay Conrod 
Reviewed-by: Bryan C. Mills