Russ Cox 4224d81fae cmd/internal/gc: inline x := y.(*T) and x, ok := y.(*T) ...

These can be implemented with just a compare and a move instruction.
Do so, avoiding the overhead of a call into the runtime.

These assertions are a significant cost in Go code that uses interface{}
as a safe alternative to C's void* (or unsafe.Pointer), such as the
current version of the Go compiler.

*T here includes pointer to T but also any Go type represented as
a single pointer (chan, func, map). It does not include [1]*T or struct{*int}.
That requires more work in other parts of the compiler; there is a TODO.

Change-Id: I7ff681c20d2c3eb6ad11dd7b3a37b1f3dda23965
Reviewed-on: https://go-review.googlesource.com/7862
Reviewed-by: Rob Pike <r@golang.org>

2015-03-20 20:05:37 +00:00

..

bench

build: adjustments for move from src/pkg to src

2014-09-08 00:06:45 -04:00

bugs

test: migrate remaining tests to run.go

2014-12-22 22:41:34 +00:00

chan

cmd/gc: implement 'for range x {'

2014-07-16 19:27:10 -04:00

ddd2.dir

test: convert tests to run.go whenever possible.

2012-10-10 22:35:27 +02:00

dwarf

test: make rundir match compiledir/errorcheckdir.

2013-01-11 22:00:48 +01:00

fixedbugs

test: add test that gccgo failed to compile

2015-03-13 22:05:23 +00:00

import2.dir

test: convert more tests to rundir/compiledir conventions

2012-10-07 23:22:01 +02:00

import4.dir

test: match gccgo import error messages

2013-12-12 19:02:11 -08:00

interface

cmd/internal/gc: inline x := y.(*T) and x, ok := y.(*T)

2015-03-20 20:05:37 +00:00

ken

go/test/chan1.go: fix typo

2012-02-25 08:47:04 +11:00

method4.dir

cmd/gc: do not omit wrapper for expression (interface{...}).F

2014-01-07 13:26:48 +01:00

safe

test: adapt old-style tests to new flag parsing.

2013-01-11 22:05:46 +01:00

stress

build: adjustments for move from src/pkg to src

2014-09-08 00:06:45 -04:00

syntax

test: match gccgo error messages

2013-12-12 17:18:12 -08:00

64bit.go

cmd/gc: Error out on division by constant zero.

2013-01-30 20:21:08 +01:00

235.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

alias1.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

alias.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

append.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

args.go

test: run some more tests by default

2012-11-08 09:04:27 -08:00

assign1.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

assign.go

cmd/gc: prohibit short variable declarations containing duplicate symbols

2014-10-06 17:16:39 -04:00

bigalg.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

bigmap.go

runtime: handle and test large map values

2012-05-24 22:41:07 -04:00

blank1.go

test: match gccgo error messages for blank1.go

2013-09-28 15:19:05 -07:00

blank.go

test: revert changes made for Go SSA interpreter test.

2013-10-08 14:36:20 -04:00

bom.go

gc: initial BOM is legal.

2012-09-10 13:03:07 -07:00

bombad.go

gc: initial BOM is legal.

2012-09-10 13:03:07 -07:00

bounds.go

test: prepare for 64-bit ints

2012-09-24 00:06:41 -04:00

chancap.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

chanlinear.go

runtime: test for linear enqueue/dequeue behavior

2014-12-08 22:18:17 +00:00

char_lit1.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

char_lit.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

clearfat.go

[dev.power64] 9g: fix under-zeroing in clearfat

2014-10-31 11:08:27 -04:00

closedchan.go

test: use testlib (first 100)

2012-02-16 23:48:57 -05:00

closure1.go

cmd/gc: capture variables by value

2015-01-29 13:07:30 +00:00

closure2.go

cmd/gc: fix capturing by value for range statements

2015-02-03 15:48:48 +00:00

closure.go

test: enforce 1 proc in the test

2012-07-01 21:59:50 +04:00

cmp6.go

cmd/gc: do not consider length zero arrays as comparable.

2014-01-31 00:30:56 +01:00

cmp.go

cmd/gc: do not nop-convert equivalent but different interface types.

2014-02-27 08:07:50 +01:00

cmplx.go

cmd/gc: reject complex calls with mismatched argument types.

2013-03-11 22:55:14 +01:00

cmplxdivide1.go

test: use testlib in a few more cases

2012-03-22 02:14:44 +08:00

cmplxdivide.c

test: comment the behavior and use of cmplxdivide*

2015-01-15 00:00:06 +00:00

cmplxdivide.go

test: comment the behavior and use of cmplxdivide*

2015-01-15 00:00:06 +00:00

complit1.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

complit.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

compos.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

const1.go

test: match gccgo error messages

2013-12-12 17:18:12 -08:00

const2.go

test: match gccgo error messages

2012-09-28 08:30:30 -07:00

const3.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

const4.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

const5.go

cmd/gc: reject builtin function calls in len(fixed array) constants

2014-04-03 19:04:33 -04:00

const6.go

test: match gccgo error strings.

2013-06-26 18:05:02 +02:00

const.go

exp/ssa/interp: (#6 of 5): test interpretation of SSA form of $GOROOT/test/*.go.

2013-02-21 12:48:38 -05:00

convert1.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

convert3.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

convert.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

convlit1.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

convlit.go

test: [a-c]: add introductory comments to tests

2012-02-19 13:19:43 +11:00

convT2X.go

cmd/gc: cache itab lookup in convT2I.

2012-07-03 09:09:05 +10:00

copy.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

crlf.go

test: use testlib in a few more cases (part 2)

2012-04-20 23:45:43 +08:00

ddd1.go

test: match gccgo error messages

2012-09-28 08:30:30 -07:00

ddd2.go

test: convert tests to run.go whenever possible.

2012-10-10 22:35:27 +02:00

ddd.go

test: enable method expression tests in ddd.go

2012-03-07 11:17:26 -08:00

decl.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

declbad.go

test: correct type in declbad.go

2012-10-07 21:52:57 +02:00

defer.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

deferfin.go

runtime: combine small NoScan allocations

2014-01-24 22:35:11 +04:00

deferprint.go

test: add cmpout to testlib

2012-02-24 13:17:26 +11:00

deferprint.out

test: split golden.out into expected output per test

2012-01-18 16:12:24 -08:00

divide.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

divmod.go

all: fix a few spelling errors in source comments

2013-12-27 08:59:02 -08:00

empty.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

env.go

os: remove Getenverror

2012-02-18 21:18:13 -08:00

eof1.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

eof.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

errchk

test/errchk: use "#!/usr/bin/env perl" shebang line

2013-05-23 04:41:22 +08:00

escape2.go

cmd/internal/gc: omit non-explicit capacity in errors with map/chan make

2015-02-25 20:04:22 +00:00

escape2n.go

cmd/internal/gc: omit non-explicit capacity in errors with map/chan make

2015-02-25 20:04:22 +00:00

escape3.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

escape4.go

cmd/internal/gc: transitive inlining

2015-02-26 17:36:00 +00:00

escape5.go

cmd/gc: distinguish unnamed vs blank-named return variables better

2014-02-13 20:59:39 -05:00

escape.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

fibo.go

Fix whitespace (use blanks consistently).

2014-12-08 22:22:58 +00:00

float_lit2.go

test: fix two typos in float_lit2.go

2014-05-21 17:19:12 -04:00

float_lit3.go

test/float_lit2.go: rewrite to test values near boundaries

2014-05-21 17:12:06 -04:00

float_lit.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

floatcmp.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

for.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

func1.go

cmd/gc: ensure unique parameter and result names in function types

2013-03-15 15:24:13 -04:00

func2.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

func3.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

func4.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

func5.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

func6.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

func7.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

func8.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

func.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

funcdup2.go

test: match gccgo error messages

2013-12-12 17:18:12 -08:00

funcdup.go

test: match gccgo error messages

2013-12-12 17:18:12 -08:00

gc1.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

gc2.go

test: check for build constraints only upto the first blank line

2015-02-06 05:36:26 +00:00

gc.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

gcstring.go

runtime: fix empty string handling in garbage collector

2014-03-11 23:58:39 -04:00

goprint.go

test: make goprint.go wait longer for go its routine to execute

2013-04-12 16:04:19 -07:00

goprint.out

test: split golden.out into expected output per test

2012-01-18 16:12:24 -08:00

goto.go

test: explanatory comments [c-g]*

2012-02-19 14:28:53 +11:00

helloworld.go

test: add cmpout to testlib

2012-02-24 13:17:26 +11:00

helloworld.out

test: split golden.out into expected output per test

2012-01-18 16:12:24 -08:00

if.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

import1.go

test: match gccgo import error messages

2013-12-12 19:02:11 -08:00

import2.go

test: convert more tests to rundir/compiledir conventions

2012-10-07 23:22:01 +02:00

import4.go

test: convert more tests to rundir/compiledir conventions

2012-10-07 23:22:01 +02:00

import5.go

gc: disallow absolute import paths

2012-02-29 15:28:36 -05:00

import.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

index0.go

test: run index test by default

2012-11-07 12:33:54 -08:00

index1.go

test: run index test by default

2012-11-07 12:33:54 -08:00

index2.go

test: run index test by default

2012-11-07 12:33:54 -08:00

index.go

test: recognize gccgo error message in index.go

2013-09-27 20:38:52 -07:00

indirect1.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

indirect.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

init1.go

test: deflake init1.go test, tighten its bounds

2015-02-13 22:13:56 +00:00

init.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

initcomma.go

test/initcomma.go: restore what it's supposed to be testing

2012-02-20 07:44:24 +11:00

initialize.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

initializerr.go

test: add "duplicate" struct map key test

2012-12-17 11:05:58 -05:00

inline.go

cmd/internal/gc: transitive inlining

2015-02-26 17:36:00 +00:00

int_lit.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

intcvt.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

iota.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

label1.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

label.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

linkx_run.go

cmd/go: put user ldflags at the end of the linker invocation

2015-01-02 18:36:44 +00:00

linkx.go

test: move linkx and sinit to run.go

2014-11-06 15:14:08 -05:00

literal.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

live1.go

cmd/gc: correct liveness for fat variables

2014-02-15 10:58:55 -05:00

live2.go

cmd/gc: allocate non-escaping maps on stack

2015-02-12 09:53:52 +00:00

live.go

cmd/gc: evaluate concrete == interface without allocating

2015-02-12 22:23:38 +00:00

mallocfin.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

map1.go

cmd/gc: fix type checking loop

2012-06-07 03:06:40 -04:00

map.go

test/mapnan.go: add regression test for non-empty interfaces.

2014-08-06 17:02:55 -04:00

maplinear.go

test: make maplinear more robust

2014-10-27 18:59:02 -04:00

method1.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

method2.go

cmd/gc: fix method values whose receiver is an unnamed interface.

2013-08-29 10:00:58 +02:00

method3.go

test: commentary for [h-m]*.go

2012-02-23 18:47:26 +11:00

method4.go

test: convert more tests to rundir/compiledir conventions

2012-10-07 23:22:01 +02:00

method5.go

cmd/gc: implement method values

2013-03-20 17:11:09 -04:00

method.go

test: a number of fixes.

2013-02-11 18:20:52 -05:00

named1.go

cmd/gc: comma-ok assignments produce untyped bool as 2nd result

2014-08-11 16:11:55 -07:00

named.go

gc: return of ideal bool

2012-02-21 22:54:07 -05:00

nil.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

nilcheck.go

cmd/gc: optimize existence-only map lookups

2015-01-07 22:36:06 +00:00

nilptr2.go

test: revert changes made for Go SSA interpreter test.

2013-10-08 14:36:20 -04:00

nilptr3.go

test: fix nosplit test, and disable nilptr3 test on arm64

2015-03-16 18:46:35 +00:00

nilptr4.go

cmd/gc: fix bad checknil with ints on 32 bit compilers

2014-02-26 12:25:13 -08:00

nilptr.go

test/nilptr: add more tests

2013-09-05 23:06:34 -04:00

nosplit.go

test: fix nosplit test, and disable nilptr3 test on arm64

2015-03-16 18:46:35 +00:00

nul1.go

test: run some more tests by default

2012-11-08 09:04:27 -08:00

parentype.go

test/[n-r]*.go: add documentation

2012-02-24 10:30:39 +11:00

peano.go

test/[n-r]*.go: add documentation

2012-02-24 10:30:39 +11:00

print.go

runtime: move built-in print routines to go.

2014-07-31 13:48:48 -07:00

print.out

runtime: move built-in print routines to go.

2014-07-31 13:48:48 -07:00

printbig.go

test: add cmpout to testlib

2012-02-24 13:17:26 +11:00

printbig.out

test: split golden.out into expected output per test

2012-01-18 16:12:24 -08:00

range.go

cmd/gc: implement 'for range x {'

2014-07-16 19:27:10 -04:00

recover1.go

test: use testlib (final 61)

2012-02-16 23:51:04 -05:00

recover2.go

test: use testlib (final 61)

2012-02-16 23:51:04 -05:00

recover3.go

tests: remove two misuses of nil pointers

2013-08-15 11:51:04 -04:00

recover4.go

test: fix recover4 test on 64kb systems

2015-03-17 05:25:01 +00:00

recover.go

test: add more cases to recover.go

2014-10-22 08:06:15 -07:00

rename1.go

test: fix the fix of the rename tests.

2012-02-24 15:06:32 +11:00

rename.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00

reorder2.go

cmd/gc: shorten temporary lifetimes when possible

2014-04-01 13:31:38 -04:00

reorder.go

test: a number of fixes.

2013-02-11 18:20:52 -05:00

return.go

test: add cases to return.go that gccgo got wrong

2013-08-07 11:31:01 -07:00

rotate0.go

[dev.cc] test: disable rotate tests

2015-02-19 20:14:21 +00:00

rotate1.go

[dev.cc] test: disable rotate tests

2015-02-19 20:14:21 +00:00

rotate2.go

[dev.cc] test: disable rotate tests

2015-02-19 20:14:21 +00:00

rotate3.go

[dev.cc] test: disable rotate tests

2015-02-19 20:14:21 +00:00

rotate.go

test: add rotate.go and fixedbugs/bug313

2013-01-11 22:42:55 +01:00

run.go

[dev.cc] test: disable syntax error tests

2015-02-23 19:56:11 +00:00

rune.go

test/[n-r]*.go: add documentation

2012-02-24 10:30:39 +11:00

runtime.go

test/[n-r]*.go: add documentation

2012-02-24 10:30:39 +11:00

shift1.go

test: avoid "declared but not used" errors in shift1.go

2014-07-20 12:25:24 -07:00

shift2.go

test: add shift expression incorrectly rejected by gccgo.

2013-06-25 08:06:34 +02:00

sieve.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

sigchld.go

test: skip SIGCHLD test on Plan 9

2014-01-29 09:28:23 +01:00

sigchld.out

test: split golden.out into expected output per test

2012-01-18 16:12:24 -08:00

simassign.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

sinit_run.go

test: fix nacl build

2014-11-09 21:10:49 -05:00

sinit.go

test: move linkx and sinit to run.go

2014-11-06 15:14:08 -05:00

sizeof.go

test: correct sizeof.go.

2013-06-02 19:10:11 +02:00

slice3.go

cmd/gc, runtime: treat slices and strings like pointers in garbage collection

2014-08-25 14:38:19 -04:00

slice3err.go

test: match gccgo error messages

2013-12-12 17:18:12 -08:00

slicecap.go

cmd/gc, runtime: treat slices and strings like pointers in garbage collection

2014-08-25 14:38:19 -04:00

solitaire.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

stack.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

string_lit.go

test: add []rune case to string_lit.go

2013-12-12 17:17:02 -08:00

stringrange.go

all: make Unicode surrogate halves illegal as UTF-8

2012-08-08 14:01:23 -07:00

struct0.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

switch3.go

cmd/gc: accept switches on comparable arrays.

2012-08-03 21:47:26 +02:00

switch4.go

cmd/gc: disallow fallthrough in final case of switch

2013-03-15 00:35:09 -04:00

switch.go

cmd/gc: disallow fallthrough in final case of switch

2013-03-15 00:35:09 -04:00

tinyfin.go

runtime: combine small NoScan allocations

2014-01-24 22:35:11 +04:00

torture.go

cmd/8g: don't allocate a register early for cap(CHAN).

2014-07-01 09:20:51 +02:00

turing.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

typecheck.go

cmd/gc: silence assignment errors to undefined symbols

2014-01-03 21:03:20 +01:00

typeswitch1.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

typeswitch2.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

typeswitch3.go

test: match gccgo error messages

2012-09-28 08:30:30 -07:00

typeswitch.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

undef.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

utf.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

varerr.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

varinit.go

test/[n-z]*.go: add documentation

2012-02-24 11:48:19 +11:00

zerodivide.go

test: ensure all failing tests exit nonzero.

2013-02-12 13:17:49 -05:00