delta/go-git.git/src/cmd/internal/obj/data.go, branch dev.inline

cmd/compile, cmd/link: weak relocation for ptrTo

2016-11-22T03:10:14+00:00

Introduce R_WEAKADDROFF, a "weak" variation of the R_ADDROFF relocation
that will only reference the type described if it is in some other way
reachable.

Use this for the ptrToThis field in reflect type information where it
is safe to do so (that is, types that don't need to be included for
interface satisfaction, and types that won't cause the compiler to
recursively generate an endless series of ptr-to-ptr-to-ptr-to...
types).

Also fix a small bug in reflect, where StructOf was not clearing the
ptrToThis field of new types.

Fixes #17931

Change-Id: I4d3b53cb9c916c97b3b16e367794eee142247281
Reviewed-on: https://go-review.googlesource.com/33427
Run-TryBot: David Crawshaw 
TryBot-Result: Gobot Gobot 
Reviewed-by: Ian Lance Taylor

all: fix obsolete inferno-os links

2016-08-29T04:54:42+00:00

Fixes #16911.

Fix obsolete inferno-os links, since code.google.com shutdown.
This CL points to the right files by replacing
http://code.google.com/p/inferno-os/source/browse
with
https://bitbucket.org/inferno-os/inferno-os/src/default

To implement the change I wrote and ran this script in the root:
$ grep -Rn 'http://code.google.com/p/inferno-os/source/browse' * \
| cut -d":" -f1 | while read F;do perl -pi -e \
's/http:\/\/code.google.com\/p\/inferno-os\/source\/browse/https:\/\/bitbucket.org\/inferno-os\/inferno-os\/src\/default/g'
$F;done

I excluded any cmd/vendor changes from the commit.

Change-Id: Iaaf828ac8f6fc949019fd01832989d00b29b6749
Reviewed-on: https://go-review.googlesource.com/27994
Reviewed-by: Ian Lance Taylor 
Run-TryBot: Ian Lance Taylor 
TryBot-Result: Gobot Gobot

all: make copyright headers consistent with one space after period

2016-05-02T13:43:18+00:00

Follows suit with https://go-review.googlesource.com/#/c/20111.

Generated by running
$ grep -R 'Go Authors.  All' * | cut -d":" -f1 | while read F;do perl -pi -e 's/Go
Authors.  All/Go Authors. All/g' $F;done

The code in cmd/internal/unvendor wasn't changed.

Fixes #15213

Change-Id: I4f235cee0a62ec435f9e8540a1ec08ae03b1a75f
Reviewed-on: https://go-review.googlesource.com/21819
Reviewed-by: Ian Lance Taylor 
Run-TryBot: Ian Lance Taylor 
TryBot-Result: Gobot Gobot

cmd: remove unnecessary type conversions

2016-04-15T02:32:10+00:00

CL generated mechanically with github.com/mdempsky/unconvert.

Change-Id: Ic590315cbc7026163a1b3f8ea306ba35f1a53256
Reviewed-on: https://go-review.googlesource.com/22103
Run-TryBot: Matthew Dempsky 
TryBot-Result: Gobot Gobot 
Reviewed-by: Michael Hudson-Doyle

cmd/compile, etc: use name for type pkgPath

2016-04-13T20:48:26+00:00

By replacing the *string used to represent pkgPath with a
reflect.name everywhere, the embedded *string for package paths
inside the reflect.name can be replaced by an offset, nameOff.
This reduces the number of pointers in the type information.

This also moves all reflect.name types into the same section, making
it possible to use nameOff more widely in later CLs.

No significant binary size change for normal binaries, but:

linux/amd64 PIE:
	cmd/go: -440KB (3.7%)
	jujud:  -2.6MB (3.2%)

For #6853.

Change-Id: I3890b132a784a1090b1b72b32febfe0bea77eaee
Reviewed-on: https://go-review.googlesource.com/21395
Run-TryBot: David Crawshaw 
TryBot-Result: Gobot Gobot 
Reviewed-by: Ian Lance Taylor

cmd/link, etc: store typelinks as offsets

2016-04-12T20:32:41+00:00

This is the first in a series of CLs to replace the use of pointers
in binary read-only data with offsets.

In standard Go binaries these CLs have a small effect, shrinking
8-byte pointers to 4-bytes. In position-independent code, it also
saves the dynamic relocation for the pointer. This has a significant
effect on the binary size when building as PIE, c-archive, or
c-shared.

darwin/amd64:
	cmd/go: -12KB (0.1%)
	jujud:  -82KB (0.1%)

linux/amd64 PIE:
	cmd/go:  -86KB (0.7%)
	jujud:  -569KB (0.7%)

For #6853.

Change-Id: Iad5625bbeba58dabfd4d334dbee3fcbfe04b2dcf
Reviewed-on: https://go-review.googlesource.com/21284
Reviewed-by: Ian Lance Taylor 
Run-TryBot: David Crawshaw 
TryBot-Result: Gobot Gobot

cmd: add new common architecture representation

2016-04-07T01:23:25+00:00

Information about CPU architectures (e.g., name, family, byte
ordering, pointer and register size) is currently redundantly
scattered around the source tree. Instead consolidate the basic
information into a single new package cmd/internal/sys.

Also, introduce new sys.I386, sys.AMD64, etc. names for the constants
'8', '6', etc. and replace most uses of the latter. The notable
exceptions are a couple of error messages that still refer to the old
char-based toolchain names and function reltype in cmd/link.

Passes toolstash/buildall.

Change-Id: I8a6f0cbd49577ec1672a98addebc45f767e36461
Reviewed-on: https://go-review.googlesource.com/21623
Reviewed-by: Michael Hudson-Doyle 
Reviewed-by: Brad Fitzpatrick 
Run-TryBot: Matthew Dempsky 
TryBot-Result: Gobot Gobot

cmd/internal/obj/x86: estimate text size

2016-03-16T23:27:19+00:00

We can’t perfectly predict how large the function
will be, but we can make a safe overestimate.
No significant CPU time changes.

name       old alloc/op    new alloc/op    delta
Template      67.7MB ± 0%     67.5MB ± 0%   -0.24%          (p=0.029 n=4+4)
Unicode       43.9MB ± 0%     43.8MB ± 0%   -0.13%          (p=0.029 n=4+4)
GoTypes        244MB ± 0%      244MB ± 0%   -0.28%          (p=0.029 n=4+4)
Compiler      1.05GB ± 0%     1.05GB ± 0%   -0.38%          (p=0.029 n=4+4)

name       old allocs/op   new allocs/op   delta
Template        795k ± 0%       794k ± 0%   -0.14%          (p=0.029 n=4+4)
Unicode         569k ± 0%       569k ± 0%     ~             (p=0.114 n=4+4)
GoTypes        2.59M ± 0%      2.58M ± 0%   -0.11%          (p=0.029 n=4+4)
Compiler       11.0M ± 0%      11.0M ± 0%   -0.09%          (p=0.029 n=4+4)

Passes toolstash -cmp.

Change-Id: I0a92ab04cba7520540ec58fe7189666d0e771454
Reviewed-on: https://go-review.googlesource.com/20771
Reviewed-by: Brad Fitzpatrick 
Run-TryBot: Josh Bleecher Snyder

cmd/internal/obj: convert Symgrow to a method

2016-03-16T23:25:33+00:00

Passes toolstash -cmp.

Change-Id: I77a415a4e5d8de7eb902fb0866aaf8783259485a
Reviewed-on: https://go-review.googlesource.com/20770
Reviewed-by: Brad Fitzpatrick 
Run-TryBot: Josh Bleecher Snyder 
TryBot-Result: Gobot Gobot

cmd/compile: convert data siz to int

2016-03-14T20:22:21+00:00

Follow-up to CL 20645.

Passes toolstash -cmp.

Change-Id: Idc63c41b2be2d52e3a6ac59b3a12eb41aa2efbed
Reviewed-on: https://go-review.googlesource.com/20670
Reviewed-by: Ian Lance Taylor