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  1. 07 Nov, 2011 1 commit
  3. 02 Nov, 2011 3 commits
  5. 31 Oct, 2011 1 commit
    • Luuk van Dijk's avatar
      gc: clean up printing. · 50110c9f
      Luuk van Dijk authored 
      Got rid of all the magic mystery globals. Now
for %N, %T, and %S, the flags +,- and # set a sticky
debug, sym and export mode, only visible in the new fmt.c.
Default is error mode. Handle h and l flags consistently with
the least side effects, so we can now change
things without worrying about unrelated things
breaking.

fixes #2361

R=rsc
CC=golang-dev
https://golang.org/cl/5316043
      50110c9f
  7. 26 Oct, 2011 1 commit
  9. 18 Oct, 2011 2 commits
  11. 17 Oct, 2011 1 commit
  13. 13 Oct, 2011 1 commit
  15. 08 Oct, 2011 1 commit
  17. 07 Sep, 2011 1 commit
    • Russ Cox's avatar
      gc: add -p flag to catch import cycles earlier · 1e480cd1
      Russ Cox authored 
      The linker would catch them if gc succeeded,
but too often the cycle manifests as making the
current package and the imported copy of itself
appear as different packages, which result in
type signature mismatches that confuse users.

As a crutch, add the -p flag to say 'if you see an
import of this package, give up early'.  Results in
messages like (during gotest in sort):

export_test.go:7: import "sort" while compiling that package (import cycle)
export_test.go:7: import "container/heap": package depends on "sort" (import cycle)

Fixes #2042.

R=ken
CC=bradfitz, dsymonds, golang-dev
https://golang.org/cl/4972057
      1e480cd1
  19. 06 Sep, 2011 1 commit
    • Russ Cox's avatar
      gc: unify stack frame layout · 5ddf6255
      Russ Cox authored 
      allocparams + tempname + compactframe
all knew about how to place stack variables.

Now only compactframe, renamed to allocauto,
does the work.  Until the last minute, each PAUTO
variable is in its own space and has xoffset == 0.

This might break 5g.  I get failures in concurrent
code running under qemu and I can't tell whether
it's 5g's fault or qemu's.  We'll see what the real
ARM builders say.

R=ken2
CC=golang-dev
https://golang.org/cl/4973057
      5ddf6255
  21. 02 Sep, 2011 1 commit
  23. 01 Sep, 2011 1 commit
    • Russ Cox's avatar
      gc: fix label recursion bugs · 60d47101
      Russ Cox authored 
      Was keeping a pointer to the labeled statement in n->right,
which meant that generic traversals of the tree visited it twice.
That combined with aggressive flattening of the block
structure when possible during parsing meant that
the kinds of label: code label: code label: code sequences
generated by yacc were giving the recursion 2ⁿ paths
through the program.

Fixes #2212.

R=lvd
CC=golang-dev
https://golang.org/cl/4960050
      60d47101
  25. 31 Aug, 2011 1 commit
    • Russ Cox's avatar
      gc: make static initialization more static · 335da67e
      Russ Cox authored 
      Does as much as possible in data layout instead
of during the init function.

Handles var x = y; var y = z as a special case too,
because it is so prevalent in package unicode
(var Greek = _Greek; var _Greek = []...).

Introduces InitPlan description of initialized data
so that it can be traversed multiple times (for example,
in the copy handler).

Cuts package unicode's init function size by 8x.
All that remains there is map initialization, which
is on the chopping block too.

Fixes sinit.go test case.

Aggregate DATA instructions at end of object file.

Checkpoint.  More to come.

R=ken2
CC=golang-dev
https://golang.org/cl/4969051
      335da67e
  27. 30 Aug, 2011 1 commit
  29. 29 Aug, 2011 1 commit
    • Lucio De Re's avatar
      gc: fix build on Plan 9 · b3cc4897
      Lucio De Re authored 
      gc/bits.c
. improved format with associated cast;
gc/closure.c
gc/dcl.c
gc/range.c
gc/reflect.c
gc/sinit.c
. dropped unnecessary assignments;
gc/gen.c
. dropped unnecessary assignment;
. added static qualifier to local function definition;
gc/go.h
. added varargck pragmas;
gc/lex.c
. used {} instead of ; in if statement to suppress warning;
. replaced exit(0) with exits(0);
. added compilation conditions for SIGBUS/SIGSEGV;
. dropped unnecessary assignment;
gc/mparith2.c
. dropped four unnecessary assignments/initialisations;
gc/obj.c
. added type cast to local pointer;
gc/pgen.c
. added cast and related print format;
gc/subr.c
. replaced exit(1) with exits("error");
. replaced unlink() with remove();
. renamed local cistrmp() as ucistrmp() to remove conflict with
  Plan 9 function by the same name;
gc/swt.c
. added braces instead of ; as empty statment;
gc/typecheck.c
. added static qualifier to local function definition;
. dropped unnecessary assignments;
gc/walk.c
. dropped unne...
      b3cc4897
  31. 28 Aug, 2011 1 commit
    • Russ Cox's avatar
      gc: tweak and enable escape analysis · db5f9da4
      Russ Cox authored 
      -s now means *disable* escape analysis.

Fix escape leaks for struct/slice/map literals.
Add ... tracking.
Rewrite new(T) and slice literal into stack allocation when safe.

Add annotations to reflect.
Reflect is too chummy with the compiler,
so changes like these affect it more than they should.

R=lvd, dave, gustavo
CC=golang-dev
https://golang.org/cl/4954043
      db5f9da4
  33. 25 Aug, 2011 1 commit
    • Russ Cox's avatar
      gc: shuffle #includes · 61f84a2c
      Russ Cox authored 
      #include "go.h" (or "gg.h")

becomes

#include <u.h>
#include <libc.h>
#include "go.h"

so that go.y can #include <stdio.h>
after <u.h> but before "go.h".
This is necessary on Plan 9.

R=ken2
CC=golang-dev
https://golang.org/cl/4971041
      61f84a2c
  35. 24 Aug, 2011 1 commit
  37. 08 Aug, 2011 1 commit
    • Dmitriy Vyukov's avatar
      runtime: add more specialized type algorithms · 54e9406f
      Dmitriy Vyukov authored 
      The change adds specialized type algorithms
for slices and types of size 8/16/32/64/128.
It significantly accelerates chan and map operations
for most builtin types as well as user structs.

benchmark                   old,ns/op   new,ns/op
BenchmarkChanUncontended          226          94
(on Intel Xeon E5620, 2.4GHz, Linux 64 bit)

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/4815087
      54e9406f
  39. 27 Jul, 2011 3 commits
  41. 26 Jul, 2011 1 commit
  43. 25 Jul, 2011 1 commit
  45. 21 Jul, 2011 2 commits
    • Russ Cox's avatar
      gc: select functions are no longer special · 22853098
      Russ Cox authored 
      R=ken2
CC=golang-dev
https://golang.org/cl/4794049
      22853098
    • Dmitriy Vyukov's avatar
      runtime: faster select · 6b2ec065
      Dmitriy Vyukov authored 
      Make selectsend() accept pointer to the element,
it makes it possible to make Scase fixed-size
and allocate/free Select, all Scase's and all SudoG at once.
As a consequence SudoG freelist die out.

benchmark                       old,ns/op  new,ns/op
BenchmarkSelectUncontended	     1080        558
BenchmarkSelectUncontended-2	      675        264
BenchmarkSelectUncontended-4	      459        205
BenchmarkSelectContended	     1086        560
BenchmarkSelectContended-2	     1775       1672
BenchmarkSelectContended-4	     2668       2149
(on Intel Q6600, 4 cores, 2.4GHz)

benchmark                       old ns/op    new ns/op    delta
BenchmarkSelectUncontended         517.00       326.00  -36.94%
BenchmarkSelectUncontended-2       281.00       166.00  -40.93%
BenchmarkSelectUncontended-4       250.00        83.10  -66.76%
BenchmarkSelectUncontended-8       107.00        47.40  -55.70%
BenchmarkSelectUncontended-16       67.80        41.30  -39.09%
BenchmarkSelectContended           513.00       325.00  -36.65%
BenchmarkSelectContended-2         699.00       628.00  -10.16%
BenchmarkSelectContended-4        1085.00      1092.00   +0.65%
BenchmarkSelectContended-8        3253.00      2477.00  -23.85%
BenchmarkSelectContended-16       5313.00      5116.00   -3.71%
(on Intel E5620, 8 HT cores, 2.4 GHz)

R=rsc, ken
CC=golang-dev
https://golang.org/cl/4811041
      6b2ec065
  47. 27 Jun, 2011 1 commit
  49. 17 Jun, 2011 1 commit
  51. 16 Jun, 2011 1 commit
  53. 14 Jun, 2011 1 commit
  55. 09 Jun, 2011 1 commit
  57. 03 Jun, 2011 1 commit
  59. 02 Jun, 2011 1 commit
  61. 01 Jun, 2011 1 commit
  63. 31 May, 2011 2 commits
  65. 28 Apr, 2011 1 commit
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