Commit Graph

3612 Commits

Author SHA1 Message Date
Rémy Oudompheng 022b361ae2 cmd/5g, cmd/6g, cmd/8g: remove width check for componentgen.
The move to 64-bit ints in 6g made componentgen ineffective.
In componentgen, the code already selects which values it can handle.

On amd64:
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    9477970000   9582314000   +1.10%
BenchmarkFannkuch11      5928750000   5255080000  -11.36%
BenchmarkGobDecode         37103040     31451120  -15.23%
BenchmarkGobEncode         16042490     16844730   +5.00%
BenchmarkGzip             811337400    741373600   -8.62%
BenchmarkGunzip           197928700    192844500   -2.57%
BenchmarkJSONEncode       224164100    140064200  -37.52%
BenchmarkJSONDecode       258346800    231829000  -10.26%
BenchmarkMandelbrot200      7561780      7601615   +0.53%
BenchmarkParse             12970340     11624360  -10.38%
BenchmarkRevcomp         1969917000   1699137000  -13.75%
BenchmarkTemplate         296182000    263117400  -11.16%

R=nigeltao, dave, daniel.morsing
CC=golang-dev
https://golang.org/cl/6821052
2012-11-01 14:36:08 +01:00
Robert Griesemer 0cbca268d8 gofmt: simplify slices of the form s[a : len(s)] to s[a:]
Fixes #4314.

R=r, rsc
CC=golang-dev
https://golang.org/cl/6822059
2012-10-31 11:48:55 -07:00
Robert Griesemer 465b9c35e5 gofmt: apply gofmt -w src misc
Remove trailing whitespace in comments.
No other changes.

R=r
CC=golang-dev
https://golang.org/cl/6815053
2012-10-30 13:38:01 -07:00
Robert Griesemer db2b6ed854 go/printer, gofmt: trim trailing whitespace in comments
Also: updated go fix testcases to pass tests.

Fixes #4310.

R=r
CC=golang-dev
https://golang.org/cl/6810055
2012-10-30 13:09:47 -07:00
Shenghou Ma 78a6f75241 cmd/ld: handle weak symbols
compiler_rt introduces a weak and hidden symbol compilerrt_abort_impl
into our pre-linked _all.o object, we have to handle it.

Fixes #4273.

R=iant, rsc, r
CC=golang-dev
https://golang.org/cl/6783050
2012-10-30 23:58:43 +08:00
Brad Fitzpatrick 71d9e956a0 cmd/api: handle contexts re-converging
Fixes #4303

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6816058
2012-10-30 13:12:59 +01:00
Brad Fitzpatrick e53a2c40b1 cmd/api: add more tests
Feature extraction was tested before, but not the final diffs.

This CL breaks function main into a smaller main + testable
compareAPI.

No functional changes.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6820057
2012-10-30 11:23:44 +01:00
Luuk van Dijk 530147e870 cmd/gc: inlining functions with local variables
- make sure dclcontext == PAUTO only in function bodies
- introduce PDISCARD to discard declarations in bodies of repeated imports
- skip printing initializing OAS'es in export mode, assuming they only occur after ODCL's
- remove ODCL and the initializing OAS from inl.c:ishairy
- fix confused use of ->typecheck in typecheckinl: it's about the ->inl, not about the fn.
- debuging aids: print ntype on ONAMEs too and -Emm instead of -Ell.

fixes #2812

R=rsc
CC=golang-dev
https://golang.org/cl/6800043
2012-10-29 13:55:27 +01:00
Luuk van Dijk 507fcf37d2 cmd/gc: escape analysis to track flow of in to out parameters.
includes step 0: synthesize outparams, from 6600044
includes step 1,2: give outparams loopdepth 0 and verify unchanged results
         generate esc:$mask tags, but still tie to sink if a param has mask != 0
from 6610054

adds final steps:
- have esccall generate n->escretval, a list of nodes the function results flow to
- use these in esccall and ORETURN/OAS2FUNC/and f(g())
- only tie parameters to sink if tag is absent, otherwise according to mask, tie them to escretval

R=rsc, bradfitz
CC=dave, gobot, golang-dev, iant, rsc
https://golang.org/cl/6741044
2012-10-29 13:38:21 +01:00
Rémy Oudompheng ee3e2ac1a6 cmd/5g: introduce componentgen for better registerization.
It is essentially identical to the version in 6g.

R=dave, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6710043
2012-10-28 20:11:21 +01:00
Dave Cheney 542dd8b9fb cmd/5g: peep.c: reactivate some optimisations
Thanks to Minux and Remy for their advice.

The EOR optimisation is applied to a few places in the stdlib.

// hash/crc32/crc32.go
func update(crc uint32, tab *Table, p []byte) uint32 {
	crc = ^crc
	for _, v := range p {
        	crc = tab[byte(crc)^v] ^ (crc >> 8)
	}
	return ^crc
}

before:

--- prog list "update" ---
0164 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:101) TEXT        update+0(SB),$12-24
0165 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:101) MOVW        tab+4(FP),R8
0166 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:102) MOVW        crc+0(FP),R0
0167 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:102) EOR         $-1,R0,R5
0168 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:103) MOVW        p+8(FP),R0
0169 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:103) MOVW        R0,autotmp_0019+-12(SP)

after:

--- prog list "update" ---
0164 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:101) TEXT        update+0(SB),$12-24
0165 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:101) MOVW        tab+4(FP),R8
0166 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:102) MOVW        crc+0(FP),R0
0167 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:102) MVN         R0,R5
0168 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:103) MOVW        p+8(FP),R0
0169 (/home/dfc/go/src/pkg/hash/crc32/crc32.go:103) MOVW        R0,autotmp_0019+-12(SP)

After 5l has done its work,

        crc = ^crc
   3d710:       e59d0014        ldr     r0, [sp, #20]
   3d714:       e3e0b000        mvn     fp, #0
   3d718:       e020500b        eor     r5, r0, fp

becomes

        crc = ^crc
   3d710:       e59d0014        ldr     r0, [sp, #20]
   3d714:       e1e05000        mvn     r5, r0

The MOVB optimisation has a small impact on the stdlib, in strconv
and gzip.

// GZIP (RFC 1952) is little-endian, unlike ZLIB (RFC 1950).
func put2(p []byte, v uint16) {
        p[0] = uint8(v >> 0)
        p[1] = uint8(v >> 8)
}

before:

--- prog list "put2" ---
1369 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:76) TEXT       put2+0(SB),$0-16
1370 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:76) MOVHU      v+12(FP),R4
1371 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVHU      R4,R0
1372 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVHU      R0,R0
1373 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVBU      R0,R1
1374 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVBU      R1,R3
1375 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVW       $p+0(FP),R1

after:

--- prog list "put2" ---
1369 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:76) TEXT       put2+0(SB),$0-16
1370 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:76) MOVHU      v+12(FP),R4
1371 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVHU      R4,R0
1372 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVBU      R0,R1
1373 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVBU      R1,R3
1374 (/home/dfc/go/src/pkg/compress/gzip/gzip.go:77) MOVW       $p+0(FP),R1

R=remyoudompheng, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6674048
2012-10-26 18:19:10 +11:00
Rémy Oudompheng 335eef85c3 cmd/6g: fix crash in cgen_bmul.
Used to print:
../test/torture.go:116: internal compiler error: bad width: 0463 (../test/torture.go:116) MOVB    ,BX (0, 8)

R=nigeltao, rsc
CC=golang-dev
https://golang.org/cl/6736068
2012-10-26 00:29:44 +02:00
Russ Cox 80dbe74360 cmd/gc, cmd/ld: use go.weak instead of weak as the weak symbol prefix
Also defend our symbol prefixes (now just "go" and "type")
from use as import paths.

Fixes #4257.

R=ken2
CC=golang-dev
https://golang.org/cl/6744072
2012-10-23 11:16:08 -04:00
Daniel Morsing 48af64b295 cmd/gc: Mark use of builtin functions as calls.
Fixes #4097.

R=rsc
CC=golang-dev, gri
https://golang.org/cl/6749059
2012-10-22 19:14:30 +02:00
Shenghou Ma 3dbbb6eb4c cmd/5l, cmd/6l, cmd/8l: put floating point numbers in .rodata section
R=golang-dev, rsc
CC=0xe2.0x9a.0x9b, golang-dev
https://golang.org/cl/6742063
2012-10-23 00:59:53 +08:00
Luuk van Dijk 75692424d2 cmd/gc: escape analysis to track flow of in to out parameters.
includes step 0: synthesize outparams, from 6600044
step 1: give outparams loopdepth 0 and verify unchanged results
step 2: generate esc:$mask tags, but still tie to sink if a param has mask != 0
next step: use in esccall (and ORETURN with implicit OAS2FUNC) to avoid tying to sink

R=rsc
CC=golang-dev
https://golang.org/cl/6610054
2012-10-22 10:18:17 +02:00
Luuk van Dijk 976ca1a47d cmd/gc: track parameter flow, step 0: synthesize name nodes for anonymous PPARAMOUTs without breaking anything.
further work on parameter flow tracking for escape analysis depends on this.

R=rsc
CC=golang-dev
https://golang.org/cl/6600044
2012-10-22 10:09:52 +02:00
Luuk van Dijk e7f89fcb1c cmd/gc: fix strict tree property for AST for OAS2RECV nodes.
in typecheck and walk, conversion from OAS2RECV to OAS2
and to OSELRECV2 duplicated the ->rlist->n to ->right
thereby destroying the strict tree-ness of the AST (up to
ONAMES) of course.  Several recursions in esc.c and inl.c
and probably elsewhere assume nodes of the tree aren't duplicated.
rather than defensively code around this, i'd rather assert
these cases away and fix their cause.

(this was tripped in 6741044)

R=rsc
CC=golang-dev
https://golang.org/cl/6750043
2012-10-22 10:01:14 +02:00
Roger Peppe 9714691a3f cmd/go: add join template function.
It's common to use the go list command in shell scripts, but
currently it's awkward to print a string slice from the Package
type in a way that's easily parseable by the shell.  For example:

        go list -f '{{range .Deps}}{{.}}
        {{end}}'

(and even that prints an unwanted new line at the end|).

To make this easier, this CL adds a "join" function to the
format template.

        go list -f '{{join .Deps "\n"}}'

R=rsc, dsymonds, minux.ma, remyoudompheng, r
CC=golang-dev
https://golang.org/cl/6680044
2012-10-22 08:58:27 +01:00
Rémy Oudompheng 319131f295 cmd/gc: fix inlining bug for composite literals in if statements.
Fixes #4230.

R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/6640056
2012-10-22 08:38:23 +02:00
Shenghou Ma 77e42e2108 lib9, cmd/dist, cmd/5l: embed GOARM into cmd/5l and auto detect GOARM
R=rsc, dave
CC=golang-dev
https://golang.org/cl/6638043
2012-10-22 14:26:36 +08:00
Russ Cox 922c0b4755 cmd/gc: rebuild builtin.c
Was not in sync with runtime.go, but the diffs
didn't really matter, so nothing broke.

R=ken2
CC=golang-dev
https://golang.org/cl/6733057
2012-10-21 17:15:56 -04:00
Daniel Morsing d7a3407e3d cmd/gc: fix confusing error when using variable as type.
Fixes #3783.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6737053
2012-10-21 20:50:31 +02:00
Daniel Morsing a7a3fe7238 cmd/gc: Friendlier errors on oversized arrays.
Someone new to the language may not know the connection between ints and arrays, which was the only thing that the previous error told you anything about.

Fixes #4256.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6739048
2012-10-21 19:22:51 +02:00
Shenghou Ma 6a3ad481cd cmd/go: make package list order predicable
also add a cleanup phase to cmd/go/test.bash.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6741050
2012-10-20 17:25:13 +08:00
Rémy Oudompheng a4682348c2 cmd/gc: don't squash complex literals when inlining.
Since this patch changes the way complex literals are written
in export data, there are a few other glitches.

Fixes #4159.

R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/6674047
2012-10-17 20:33:44 +02:00
Daniel Morsing a2659aa6a1 cmd/go: Dedup package arguments before building.
Fixes #4104.

R=golang-dev, dave, minux.ma
CC=golang-dev
https://golang.org/cl/6639051
2012-10-17 17:23:47 +02:00
Rémy Oudompheng 7e144bcab0 cmd/5g, cmd/6g, cmd/8g: fix out of registers.
This patch is enough to fix compilation of
exp/types tests but only passes a stripped down
version of the appripriate torture test.

Update #4207.

R=dave, nigeltao, rsc, golang-dev
CC=golang-dev
https://golang.org/cl/6621061
2012-10-16 07:22:33 +02:00
Shenghou Ma 1e9f308545 cmd/5l: reorder some struct fields to reduce memory consumption
Valgrind Massif result when linking godoc:
On amd64:
                    old          new         -/+
mem_heap_B       185844612    175358047    -5.7%
mem_heap_extra_B    773404       773137    -0.0%

On 386/ARM:
                    old          new         -/+
mem_heap_B       141775701    131289941    -7.4%
mem_heap_extra_B    737011       736955    -0.0%

R=golang-dev, r, dave
CC=golang-dev
https://golang.org/cl/6655045
2012-10-12 13:39:12 +08:00
Shenghou Ma 19dc7bb18f cmd/dist: fix superfluous and confusing "binaries ... to be copied or moved" message
Also, to aid debugging cmd/dist, make make.bat support --dist-tool flag.

Fixes #3100.

R=alex.brainman
CC=golang-dev
https://golang.org/cl/6637061
2012-10-12 13:35:05 +08:00
Shenghou Ma bf7d229eb8 cmd/go: don't ignore error when 'go clean'
Fixes #4208.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6635064
2012-10-11 01:34:26 +08:00
Dmitriy Vyukov 21b2ce724a cmd/gc: fix compiler crash during race instrumentation
The compiler is crashing on the following code:

type TypeID int
func (t *TypeID) encodeType(x int) (tt TypeID, err error) {
        switch x {
        case 0:
                return t.encodeType(x * x)
        }
        return 0, nil
}
The pass marks "return struct" {tt TypeID, err error} as used,
and this causes internal check failure.
I've added the test to:
https://golang.org/cl/6525052/diff/7020/src/pkg/runtime/race/regression_test.go

R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6611049
2012-10-10 18:09:23 +04:00
Andrew Gerrand 8438641629 godoc: add dropdown playground to nav bar
R=gri, dsymonds, skybrian
CC=golang-dev
https://golang.org/cl/6631057
2012-10-10 11:17:47 +11:00
Robert Griesemer af79568fde gofmt: apply gofmt -w -s src misc
Preparation for forthcoming CL 6624051: Will make it
easier to see if/what changes are incurred by it.

The alignment changes in this CL are due to CL 6610051
(fix to alignment heuristic) where it appears that an
old version of gofmt was run (and thus the correct
alignment updates were not done).

R=r
CC=golang-dev
https://golang.org/cl/6639044
2012-10-09 17:01:28 -07:00
Ian Lance Taylor 32316bba5b cmd/ld: add -B option to set build ID
Background on build ID:
http://fedoraproject.org/wiki/RolandMcGrath/BuildID

R=rsc
CC=golang-dev
https://golang.org/cl/6625072
2012-10-09 15:29:43 -07:00
Shenghou Ma d901808869 cmd/5l: generate FreeBSD compatible ELF
1. correctly initialize .plt.got entries (point to the 1st entry)
2. add section .rel.plt (FreeBSD insists PLT relocs to be there)
3. put relocs of .got.plt into .rel.plt
4. set ELFOSABI_FREEBSD in ELF header

R=rsc
CC=golang-dev
https://golang.org/cl/6643050
2012-10-10 01:02:49 +08:00
Shenghou Ma fa563ae82e cmd/ld, cmd/6l, cmd/8l: sort exported dynamic symbols for Darwin
Also corrected cmd/8l's .dynsym handling (differentiate between exported symbols and imported symbols)

        Fixes #4029.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6620075
2012-10-10 00:55:48 +08:00
Russ Cox f76f120324 cmd/ld: use 64-bit alignment for large data and bss objects
Check for specific, important misalignment in garbage collector.
Not a complete fix for issue 599 but an important workaround.

Update #599.

R=golang-dev, iant, dvyukov
CC=golang-dev
https://golang.org/cl/6641049
2012-10-09 12:50:06 -04:00
Dmitriy Vyukov 3aae5a0e7e cmd/fix: disable reflect test under race detector (very slow)
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6642045
2012-10-09 20:21:39 +04:00
Dmitriy Vyukov 6cab8aa4e4 cmd/go: fix handling of build tags for standard commands
Otherwise if I add '+build !race' to e.g. src/cmd/fix/reflect_test.go,
it does not work.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6642044
2012-10-09 19:54:14 +04:00
Andrew Gerrand 4fb89c9d6a godoc: support Playground examples on App Engine
Updates setup-godoc-app.bash to produce a working godoc app
by substituting the go1.0.x go/... packages with those from tip.

R=gri
CC=golang-dev
https://golang.org/cl/6587080
2012-10-09 09:57:51 +11:00
David Symonds f8b5838123 testing: change -test.benchtime to a flag.Duration.
Fixes #3902.

R=golang-dev, minux.ma, rsc, r
CC=golang-dev
https://golang.org/cl/6611059
2012-10-09 08:57:29 +11:00
Dave Cheney 905e8dfa27 cmd/5g: avoid temporaries during gcmp(reg, constant)
Address several instances of unneeded temporaries when using gcmp.

func M(m map[int]bool) int {
        return len(m)
}

--- prog list "M" ---
0000 (/home/dfc/src/map.go:3) TEXT      M+0(SB),$0-8
0001 (/home/dfc/src/map.go:4) MOVW      m+0(FP),R0
0002 (/home/dfc/src/map.go:4) MOVW      $0,R1
0003 (/home/dfc/src/map.go:4) CMP       R1,R0,
0004 (/home/dfc/src/map.go:4) BEQ       ,6(APC)
0005 (/home/dfc/src/map.go:4) MOVW      0(R0),R0
0006 (/home/dfc/src/map.go:4) MOVW      R0,.noname+4(FP)
0007 (/home/dfc/src/map.go:4) RET       ,

after:

--- prog list "M" ---
0000 (/home/dfc/src/map.go:3) TEXT      M+0(SB),$0-8
0001 (/home/dfc/src/map.go:4) MOVW      m+0(FP),R0
0002 (/home/dfc/src/map.go:4) CMP       $0,R0,
0003 (/home/dfc/src/map.go:4) BEQ       ,5(APC)
0004 (/home/dfc/src/map.go:4) MOVW      0(R0),R0
0005 (/home/dfc/src/map.go:4) MOVW      R0,.noname+4(FP)
0006 (/home/dfc/src/map.go:4) RET       ,

func C(c chan int) int {
        return cap(c)
}

--- prog list "C" ---
0000 (/home/dfc/src/map.go:3) TEXT      C+0(SB),$0-8
0001 (/home/dfc/src/map.go:4) MOVW      c+0(FP),R0
0002 (/home/dfc/src/map.go:4) MOVW      $0,R1
0003 (/home/dfc/src/map.go:4) CMP       R1,R0,
0004 (/home/dfc/src/map.go:4) BEQ       ,6(APC)
0005 (/home/dfc/src/map.go:4) MOVW      4(R0),R0
0006 (/home/dfc/src/map.go:4) MOVW      R0,.noname+4(FP)
0007 (/home/dfc/src/map.go:4) RET       ,

after:

--- prog list "C" ---
0000 (/home/dfc/src/map.go:3) TEXT      C+0(SB),$0-8
0001 (/home/dfc/src/map.go:4) MOVW      c+0(FP),R0
0002 (/home/dfc/src/map.go:4) CMP       $0,R0,
0003 (/home/dfc/src/map.go:4) BEQ       ,5(APC)
0004 (/home/dfc/src/map.go:4) MOVW      4(R0),R0
0005 (/home/dfc/src/map.go:4) MOVW      R0,.noname+4(FP)
0006 (/home/dfc/src/map.go:4) RET       ,

R=rsc, minux.ma, remyoudompheng
CC=golang-dev
https://golang.org/cl/6618054
2012-10-08 09:51:04 +11:00
Russ Cox 5da37c0901 cmd/8a: add SSE2 instructions
R=ken
CC=golang-dev
https://golang.org/cl/6614063
2012-10-07 16:36:29 -04:00
Russ Cox c1d06cef12 cmd/8l: add SSE2 instructions
R=ken
CC=golang-dev
https://golang.org/cl/6610065
2012-10-07 16:36:14 -04:00
Russ Cox d749783f70 cmd/gc: skip over reported BOMs
This keeps the BOM runes from causing other errors.

R=golang-dev, remyoudompheng
CC=golang-dev
https://golang.org/cl/6625062
2012-10-07 16:35:45 -04:00
Shenghou Ma 65b782e951 cmd/ld, cmd/5l: support R_ARM_PC24 and R_ARM_JUMP24, fix R_ARM_CALL
1. R_ARM_CALL can also be used to call a PLT entry
2. add support for R_ARM_PC24 and R_ARM_JUMP24
3. refactor, remove D_PLT32 in favor of D_CALL

Fixes #4006.

R=rsc, dave
CC=fullung, golang-dev
https://golang.org/cl/6622057
2012-10-08 04:20:17 +08:00
Rémy Oudompheng caff439820 cmd/gc: more graceful handling of invalid fields in widstruct.
The protection against segfaults does not completely solve
crashes and breaks test/fixedbugs/bug365.go

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6615058
2012-10-07 21:46:10 +02:00
Russ Cox 54191126e4 cmd/gc: avoid crash in %N print
R=ken2
CC=golang-dev
https://golang.org/cl/6609052
2012-10-07 15:35:01 -04:00
Rémy Oudompheng 892fa3ae6c cmd/gc: replace "typechecking loop" by nicer errors in some cases.
For issue 3757:
BEFORE:  test/fixedbugs/bug463.go:12: typechecking loop involving a
             test/fixedbugs/bug463.go:12 a
             test/fixedbugs/bug463.go:12 <node DCLCONST>
AFTER:   test/fixedbugs/bug463.go:12: constant definition loop
             test/fixedbugs/bug463.go:12: a uses a

For issue 3937:
BEFORE: test/fixedbugs/bug464.go:12: typechecking loop involving foo
            test/fixedbugs/bug464.go:12 <T>
            test/fixedbugs/bug464.go:12 foo
            test/fixedbugs/bug464.go:12 <node DCLFUNC>
AFTER:  test/fixedbugs/bug464.go:12: foo is not a type

Fixes #3757.
Fixes #3937.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6614058
2012-10-07 17:35:21 +02:00