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History

Keith Randall 12110c3f7e cmd/compile: improve multiplication strength reduction

Use an automatic algorithm to generate strength reduction code.
You give it all the linear combination (a*x+b*y) instructions in your
architecture, it figures out the rest.

Just amd64 and arm64 for now.

Fixes #67575

Change-Id: I35c69382bebb1d2abf4bb4e7c43fd8548c6c59a1
Reviewed-on: https://go-review.googlesource.com/c/go/+/626998
Reviewed-by: Jakub Ciolek <jakub@ciolek.dev>
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

2025-05-01 09:33:31 -07:00

abi

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

alias3.dir

[dev.typealias] cmd/compile: export/import test cases for type aliases

2017-01-20 05:55:53 +00:00

arenas

reflect: fix ArenaNew to match documentation

2023-06-16 17:08:43 +00:00

asmhdr.dir

cmd/compile: use exact constant in go_asm.h

2022-01-10 21:27:19 +00:00

chan

[dev.typeparams] cmd/compile/internal/types2: implement close(ch) where ch is of type parameter type

2021-07-14 23:33:46 +00:00

closure3.dir

cmd/compile: use very high budget for once-called closures

2024-11-22 02:04:41 +00:00

closure5.dir

test: use dot-relative imports where appropriate

2022-03-24 02:14:15 +00:00

codegen

cmd/compile: improve multiplication strength reduction

2025-05-01 09:33:31 -07:00

ddd2.dir

…

dwarf

…

fixedbugs

cmd/compile: put constant value on node inside parentheses

2025-04-24 12:17:27 -07:00

import2.dir

…

import4.dir

go/types, types2: use "and not used" instead of "but not used" in error messages

2022-09-27 21:10:19 +00:00

interface

go/types, types2: more systematic use of Checker.use und useLHS

2023-03-28 14:28:33 +00:00

internal/runtime/sys

runtime: move getcallersp to internal/runtime/sys

2024-09-17 17:01:20 +00:00

intrinsic.dir

runtime,internal: move runtime/internal/sys to internal/runtime/sys

2024-07-23 19:05:35 +00:00

ken

test/ken/slicearray.go: correct type width in comment

2021-12-05 12:50:44 +00:00

linkname.dir

test: compile source files as if from "test" module

2022-03-24 17:50:47 +00:00

linknameasm.dir

cmd/compile: generate args_stackmap for ABI0 assembly func regardless of linkname

2024-06-07 15:22:22 +00:00

method4.dir

…

retjmp.dir

cmd/internal/obj: fix tail call in non-zero frame leaf function on MIPS and S390X

2021-12-13 22:42:08 +00:00

stress

test/stress: fix typo in comment

2024-03-25 19:21:35 +00:00

syntax

cmd/compile: better error message when offending/missing token is a keyword

2024-11-14 02:14:13 +00:00

typeparam

cmd/compile: export/import materialized aliases

2024-04-05 16:29:58 +00:00

uintptrescapes.dir

…

wasmmemsize.dir

test: add a test for wasm memory usage

2024-10-28 13:27:58 +00:00

64bit.go

…

235.go

…

alg.go

…

alias1.go

…

alias2.go

go/types, types2: qualify named types in error messages with type kind

2024-10-23 04:43:01 +00:00

alias3.go

…

alias.go

…

align.go

…

append1.go

cmd/compile: use "cannot use %s as %s value in %s: %s" error message

2022-09-28 22:28:39 +00:00

append.go

…

args.go

…

armimm.go

…

asmhdr.go

cmd/compile: emit sensible go_asm.h consts for big ints

2021-10-30 18:30:05 +00:00

assign1.go

…

assign.go

sync: add explicit noCopy fields to Map, Mutex, and Once

2024-11-18 18:52:54 +00:00

atomicload.go

…

bigalg.go

…

bigmap.go

…

blank1.go

[dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams'

2020-12-14 12:13:36 -08:00

blank.go

…

bom.go

…

bombad.go

…

bounds.go

cmd/compile: defer lowering OANDNOT until SSA

2020-10-27 03:11:45 +00:00

cannotassign.go

[dev.typeparams] test: add scaffolding to run.go to check compiler with -G flag

2020-12-01 21:49:31 +00:00

chancap.go

[dev.regabi] cmd/compile: remove toolstash scaffolding

2021-01-05 21:44:30 +00:00

chanlinear.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

char_lit1.go

cmd/compile: do not report error for invalid constant

2021-03-05 18:46:43 +00:00

char_lit.go

…

checkbce.go

cmd/compile: rewrite the constant parts of the prove pass

2024-08-07 16:07:33 +00:00

clear.go

cmd/compile: add clear(x) builtin

2023-01-31 19:43:07 +00:00

clearfat.go

…

closedchan.go

…

closure1.go

…

closure2.go

cmd/compile: experimental loop iterator capture semantics change

2023-03-06 18:34:24 +00:00

closure3.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

closure4.go

…

closure5.go

[dev.regabi] cmd/compile: exporting, importing, and inlining functions with OCLOSURE

2021-01-20 22:53:32 +00:00

closure6.go

[dev.regabi] cmd/compile: fix escape analysis problem with closures

2021-01-23 02:15:24 +00:00

closure7.go

[dev.regabi] test: add a test for inlining closures

2021-02-01 18:28:05 +00:00

closure.go

…

cmp6.go

[dev.typeparams] test: add scaffolding to run.go to check compiler with -G flag

2020-12-01 21:49:31 +00:00

cmp.go

…

cmplx.go

cmd/compile: rewrite f(g()) for multi-value g() during typecheck

2019-03-14 21:00:20 +00:00

cmplxdivide1.go

…

cmplxdivide.c

…

cmplxdivide.go

…

complit1.go

go/types, types2: report better error messages for slice expressions

2025-03-11 05:44:15 -07:00

complit.go

…

compos.go

…

const1.go

[dev.typeparams] test: add scaffolding to run.go to check compiler with -G flag

2020-12-01 21:49:31 +00:00

const2.go

[dev.typeparams] test: add scaffolding to run.go to check compiler with -G flag

2020-12-01 21:49:31 +00:00

const3.go

…

const4.go

…

const5.go

…

const6.go

…

const7.go

all: add wasip1 support

2023-04-11 20:56:32 +00:00

const8.go

test: add more tests for const decls with ommitted RHS expressions

2022-06-28 18:11:31 +00:00

const.go

cmd/compile: apply constant folding to ORUNESTR

2019-09-26 23:54:29 +00:00

convert1.go

…

convert2.go

go/types, types2: implement slice-to-array conversions

2022-09-08 15:55:44 +00:00

convert3.go

…

convert4.go

cmd/compile: implement slice-to-array conversions

2022-09-19 18:58:26 +00:00

convert.go

…

convinline.go

cmd/compile: handle integer conversions in static init inliner

2022-11-17 13:46:05 +00:00

convlit1.go

…

convlit.go

cmd/compile/internal/types2: refactor untyped conversions

2021-03-23 05:11:09 +00:00

convT2X.go

…

copy1.go

go/types, types2: better error messages for copy built-in

2025-03-10 21:30:51 -07:00

copy.go

…

crlf.go

…

ddd1.go

cmd/compile: use "cannot use %s as %s value in %s: %s" error message

2022-09-28 22:28:39 +00:00

ddd2.go

…

ddd.go

…

decl.go

…

declbad.go

cmd/compile: rewrite a, b = f() to use temporaries when type not identical

2021-06-14 07:12:37 +00:00

defer.go

…

defererrcheck.go

test: add open-coded defer tests for too many exits path

2024-07-29 14:30:07 +00:00

deferfin.go

[dev.regabi] test: enable finalizer tests on !amd64

2021-01-05 21:11:31 +00:00

defernil.go

cmd/compile: on Wasm and AIX, let deferred nil function panic at invocation

2019-10-16 00:05:37 +00:00

deferprint.go

…

deferprint.out

…

devirt.go

[dev.typeparams] cmd/compile: simplify interface conversions

2021-08-09 16:10:20 +00:00

directive2.go

cmd/compile: restrict //go:notinheap to runtime/internal/sys

2022-09-02 06:22:23 +00:00

directive.go

cmd/compile: restrict //go:notinheap to runtime/internal/sys

2022-09-02 06:22:23 +00:00

divide.go

…

divmod.go

…

embedfunc.go

cmd/compile: require 'go 1.16' go.mod line for //go:embed

2021-01-19 20:07:52 +00:00

embedvers.go

cmd/compile: require 'go 1.16' go.mod line for //go:embed

2021-01-19 20:07:52 +00:00

empty.go

…

env.go

test,internal/testdir: don't set GOOS/GOARCH

2023-05-12 12:34:59 +00:00

eof1.go

…

eof.go

…

escape2.go

all: remove newline characters after return statements

2023-12-14 17:22:18 +00:00

escape2n.go

all: remove newline characters after return statements

2023-12-14 17:22:18 +00:00

escape3.go

…

escape4.go

cmd/compile: retire "IsHiddenClosure" and "IsDeadcodeClosure"

2024-07-22 21:27:37 +00:00

escape5.go

cmd/compile/internal/noder: stop preserving original const strings

2023-09-08 18:50:24 +00:00

escape6.go

cmd/compile: allow pointer-containing elements in stack allocations

2025-04-04 15:04:34 -07:00

escape_array.go

cmd/compile: determine static values of len and cap in make() calls

2025-02-19 13:38:58 -08:00

escape_calls.go

cmd/compile: fix escape analysis of string min/max

2023-12-05 22:06:07 +00:00

escape_closure.go

cmd/compile: retire "IsHiddenClosure" and "IsDeadcodeClosure"

2024-07-22 21:27:37 +00:00

escape_field.go

cmd/compile: use clearer error message for stuct literal

2020-09-12 08:31:49 +00:00

escape_goto.go

[dev.typeparams] test: rename blank functions

2021-07-28 21:41:07 +00:00

escape_hash_maphash.go

hash/maphash: mark call into runtime hash function as not escaping

2019-11-16 20:31:45 +00:00

escape_iface.go

test: remove *_unified.go variants

2023-05-23 17:16:35 +00:00

escape_indir.go

cmd/compile: use clearer error message for stuct literal

2020-09-12 08:31:49 +00:00

escape_level.go

cmd/compile: silence esc diagnostics about directiface OCONVIFACEs

2019-09-03 17:52:06 +00:00

escape_make_non_const.go

cmd/compile: stack allocate variable-sized makeslice

2025-04-04 10:36:58 -07:00

escape_map.go

cmd/compile: use clearer error message for stuct literal

2020-09-12 08:31:49 +00:00

escape_mutations.go

cmd/compile: restore zero-copy string->[]byte optimization

2023-08-18 11:58:37 +00:00

escape_param.go

[dev.typeparams] cmd/compile: simplify ~r/~b naming

2021-05-26 23:50:32 +00:00

escape_reflect.go

reflect: remove calling mapiterkey, mapiterelem

2024-09-18 20:57:20 +00:00

escape_runtime_atomic.go

runtime: migrate internal/atomic to internal/runtime

2024-03-25 19:53:03 +00:00

escape_selfassign.go

test: add regress test cases for self-assignment

2019-04-17 16:36:56 +00:00

escape_slice.go

cmd/compile/internal/noder: stop preserving original const strings

2023-09-08 18:50:24 +00:00

escape_struct_param1.go

cmd/compile: use clearer error message for stuct literal

2020-09-12 08:31:49 +00:00

escape_struct_param2.go

cmd/compile: use clearer error message for stuct literal

2020-09-12 08:31:49 +00:00

escape_struct_return.go

[dev.typeparams] cmd/compile: simplify ~r/~b naming

2021-05-26 23:50:32 +00:00

escape_sync_atomic.go

runtime/internal/atomic: remove bad go:noescape annotations on Loadp

2019-04-17 19:09:15 +00:00

escape_unsafe.go

test: fix typo in escape_unsafe.go

2022-09-07 17:25:59 +00:00

escape.go

cmd/compile: experimental loop iterator capture semantics change

2023-03-06 18:34:24 +00:00

fibo.go

…

finprofiled.go

test: ignore MemProfileRecords with no live objects in finprofiled.go

2023-11-16 05:48:00 +00:00

float_lit2.go

…

float_lit3.go

test: re-enable a bunch of tests with types2

2021-12-03 16:24:32 +00:00

float_lit.go

…

floatcmp.go

…

for.go

test: add test cases for index value with range array clear

2023-07-10 16:36:41 +00:00

func1.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

func2.go

…

func3.go

go/parser, syntax: better error message for parameter missing type

2024-09-30 22:04:40 +00:00

func4.go

…

func5.go

…

func6.go

…

func7.go

…

func8.go

…

func.go

…

funcdup2.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

funcdup.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

fuse.go

cmd/compile: handle boolean and pointer relations

2024-08-07 16:07:55 +00:00

gc1.go

…

gc2.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

gc.go

…

gcgort.go

…

gcstring.go

…

goprint.go

test: adjust a test to work with js/wasm's background goroutine

2019-10-10 19:38:06 +00:00

goprint.out

…

goto.go

…

heapsampling.go

test/heapsampling.go: slow down allocation rate and reduce iterations

2022-05-27 21:36:06 +00:00

helloworld.go

…

helloworld.out

…

if.go

…

import1.go

go/types, types2: use "and not used" instead of "but not used" in error messages

2022-09-27 21:10:19 +00:00

import2.go

…

import4.go

…

import5.go

…

import6.go

test: re-enable most go/tests that were disabled because of types2 differences

2022-01-11 02:26:58 +00:00

import.go

…

index0.go

…

index1.go

…

index2.go

…

index.go

all: fix typos

2019-09-08 17:28:20 +00:00

indirect1.go

…

indirect.go

…

init1.go

…

init.go

[dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams'

2020-12-14 12:13:36 -08:00

initcomma.go

…

initexp.go

cmd/compile: use "init... cycle" instead of "init... loop" in error messages

2022-09-23 20:27:09 +00:00

initialize.go

cmd/compile: handle simple inlined calls in staticinit

2022-11-16 04:04:52 +00:00

initializerr.go

test: re-enable most go/tests that were disabled because of types2 differences

2022-01-11 02:26:58 +00:00

initloop.go

go/types: improve recursive type error message

2024-10-22 22:20:29 +00:00

inline_big.go

cmd/compile: restore zero-copy string->[]byte optimization

2023-08-18 11:58:37 +00:00

inline_caller.go

runtime: make FuncForPC return the innermost inlined frame

2019-01-08 21:54:04 +00:00

inline_callers.go

runtime: make FuncForPC return the innermost inlined frame

2019-01-08 21:54:04 +00:00

inline_endian.go

cmd/compile: make encoding/binary appends cheaper to inline

2022-09-15 21:05:02 +00:00

inline_literal.go

…

inline_math_bits_rotate.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

inline_sync.go

sync: use atomic.Bool for Once.done

2025-04-22 08:28:13 -07:00

inline_testingbloop.go

testing: detect a stopped timer in B.Loop

2025-03-24 11:41:09 -07:00

inline_variadic.go

[dev.typeparams] cmd/compile: simplify inlining variadic calls

2021-05-26 23:50:45 +00:00

inline.go

cmd/compile: remove no-longer-necessary recursive inlining checks

2025-03-06 10:07:17 -08:00

int_lit.go

…

intcvt.go

…

intrinsic_atomic.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

intrinsic.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

iota.go

…

label1.go

test: match gofrontend error messages

2020-11-28 02:31:54 +00:00

label.go

test: match gofrontend error messages

2020-11-28 02:31:54 +00:00

linkmain_run.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkmain.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkname3.go

cmd/compile: disallow linkname referring to instantiations

2024-05-15 19:27:25 +00:00

linkname.go

test: remove -newescape from regress tests

2019-08-28 19:27:20 +00:00

linknameasm.go

cmd/compile: generate args_stackmap for ABI0 assembly func regardless of linkname

2024-06-07 15:22:22 +00:00

linkobj.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkx_run.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

linkx.go

[dev.link] all: clean up some TODOs

2019-11-01 20:13:05 +00:00

literal2.go

cmd/compile: accept 'i' suffix orthogonally on all numbers

2019-02-19 22:45:09 +00:00

literal.go

…

live1.go

…

live2.go

cmd/compile,internal/runtime/maps: add extendible hashing

2024-10-21 14:16:20 +00:00

live_regabi.go

runtime: rename mapiterinit and mapiternext

2025-01-28 10:54:43 -08:00

live_uintptrkeepalive.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

live.go

runtime: rename mapiterinit and mapiternext

2025-01-28 10:54:43 -08:00

loopbce.go

cmd/compile: remove no-longer-necessary recursive inlining checks

2025-03-06 10:07:17 -08:00

mainsig.go

[dev.regabi] cmd/compile: cleanup for concrete types - noder

2020-12-17 04:43:46 +00:00

makechan.go

all: fix some comments

2024-04-04 14:29:45 +00:00

makemap.go

cmd/compile/internal/types2: add unsafe.Add and unsafe.Slice

2021-04-23 00:41:01 +00:00

makenew.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

makeslice.go

cmd/compile: optimize make+copy pattern to avoid memclr

2020-05-07 17:50:24 +00:00

mallocfin.go

…

map1.go

[dev.typeparams] merge: merge branch 'dev.regabi' into 'dev.typeparams'

2020-12-14 12:13:36 -08:00

map.go

…

mapclear.go

…

maplinear.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

maymorestack.go

cmd/{asm,compile,internal/obj}: add "maymorestack" support

2021-11-05 00:52:06 +00:00

mergemul.go

…

method1.go

cmd/compile: use "method T.m already declared" for method redeclaration errors

2022-09-27 21:59:19 +00:00

method2.go

go/types, types2: better error message when using *interface instead of interface

2022-01-10 22:48:40 +00:00

method3.go

…

method4.go

…

method5.go

…

method6.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

method7.go

[dev.typeparams] cmd/compile: fix MethodExpr handling with embedded fields

2021-01-26 17:05:06 +00:00

method.go

…

named1.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

named.go

…

newinline.go

cmd/compile: remove no-longer-necessary recursive inlining checks

2025-03-06 10:07:17 -08:00

nil.go

…

nilcheck.go

[dev.unified] test: tweak nilcheck test

2022-06-30 18:41:59 +00:00

nilptr2.go

test: use a real use function in nilptr2.go

2019-05-11 03:02:33 +00:00

nilptr3.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr4.go

…

nilptr5_aix.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr5_wasm.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr5.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr_aix.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

nilptr.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

noinit.go

cmd/compile: reenable inline static init

2023-04-14 17:57:36 +00:00

nosplit.go

cmd/internal/objabi, internal/runtime: increase nosplit limit on OpenBSD

2024-12-06 00:35:41 +00:00

nowritebarrier.go

cmd/compile: redo IsRuntimePkg/IsReflectPkg predicate

2023-08-22 19:18:21 +00:00

nul1.go

…

opt_branchlikely.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

parentype.go

…

peano.go

…

phiopt.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

print.go

…

print.out

…

printbig.go

…

printbig.out

…

prove_constant_folding.go

cmd/compile: rewrite the constant parts of the prove pass

2024-08-07 16:07:33 +00:00

prove_invert_loop_with_unused_iterators.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

prove_popcount.go

cmd/compile: compute bits.OnesCount's limits from argument's limits

2025-03-11 20:17:36 -07:00

prove.go

cmd/compile: use min & max builtins to assert constant bounds in prove's tests

2025-03-11 19:51:59 -07:00

range2.go

all: rename GOEXPERIMENT=range to rangefunc

2023-11-08 15:32:14 +00:00

range3.go

cmd/compile: fix typecheck range over rune literal

2023-12-01 17:20:08 +00:00

range4.go

cmd/compile: handle defined iter func type correctly

2024-01-08 16:00:53 +00:00

range.go

…

rangegen.go

test: skip rangegen.go on 32-bit platforms

2023-12-18 23:35:19 +00:00

README.md

internal/testdir: move to cmd/internal/testdir

2023-05-12 17:18:08 +00:00

recover1.go

…

recover2.go

cmd/compile,runtime: generate hash functions only for types which are map keys

2019-09-03 20:41:29 +00:00

recover3.go

…

recover4.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

recover5.go

…

recover.go

…

reflectmethod1.go

…

reflectmethod2.go

…

reflectmethod3.go

…

reflectmethod4.go

…

reflectmethod5.go

cmd/compile: when marking REFLECTMETHOD, check for reflect package itself

2020-04-19 03:12:32 +00:00

reflectmethod6.go

cmd/compile: when marking REFLECTMETHOD, check for reflect package itself

2020-04-19 03:12:32 +00:00

reflectmethod7.go

all: use reflect.{Pointer,PointerTo}

2021-10-26 14:24:17 +00:00

reflectmethod8.go

[dev.typeparams] cmd/compile: fix missing condition in usemethod

2021-07-22 17:48:41 +00:00

rename1.go

cmd/compile/internal/types2: only mark variables as used if they are

2023-04-19 14:07:00 +00:00

rename.go

…

reorder2.go

…

reorder.go

[dev.regabi] cmd/compile: cleanup OAS2FUNC ordering

2021-01-16 23:19:26 +00:00

retjmp.go

…

return.go

…

rotate0.go

…

rotate1.go

…

rotate2.go

…

rotate3.go

…

rotate.go

…

rune.go

…

runtime.go

[dev.typeparams] cmd/compile/internal/types2: adjusted qualified identifier error message for compiler

2020-12-09 23:56:19 +00:00

shift1.go

test: re-enable a bunch of tests with types2

2021-12-03 16:24:32 +00:00

shift2.go

…

shift3.go

cmd/compile: adjust types2 shift check to match go/types (cleanup)

2022-04-07 17:19:55 +00:00

sieve.go

…

sigchld.go

test: migrate remaining files to go:build syntax

2023-10-19 23:33:25 +00:00

sigchld.out

…

simassign.go

…

sizeof.go

…

slice3.go

…

slice3err.go

[dev.typeparams] test: finish triaging all outstanding failing tests

2020-12-14 21:28:48 +00:00

slicecap.go

…

sliceopt.go

…

solitaire.go

…

stack.go

…

stackobj2.go

…

stackobj3.go

…

stackobj.go

…

strcopy.go

…

strength.go

all: fix typos

2019-09-08 17:28:20 +00:00

string_lit.go

…

stringrange.go

…

struct0.go

…

switch2.go

cmd/compile: better error message when offending/missing token is a keyword

2024-11-14 02:14:13 +00:00

switch3.go

[dev.typeparams] cmd/compile/internal/types2: report error for invalid (but empty) expr switch

2020-12-15 19:43:32 +00:00

switch4.go

…

switch5.go

[dev.typeparams] test: finish triaging all outstanding failing tests

2020-12-14 21:28:48 +00:00

switch6.go

cmd/compile: use "missing method m" instead of "missing m method"

2022-09-24 17:04:15 +00:00

switch7.go

[dev.typeparams] test: finish triaging all outstanding failing tests

2020-12-14 21:28:48 +00:00

switch.go

[dev.unified] test: add switch test case for tricky nil handling

2022-07-19 23:30:49 +00:00

tailcall.go

cmd/compile: Enable inlining of tail calls

2025-03-11 14:18:43 -07:00

tighten.go

cmd/compile: pair loads and stores on arm64

2025-02-13 14:07:47 -08:00

tinyfin.go

…

torture.go

…

turing.go

…

typecheck.go

test: re-enable most go/tests that were disabled because of types2 differences

2022-01-11 02:26:58 +00:00

typecheckloop.go

cmd/compile: use "init... cycle" instead of "init... loop" in error messages

2022-09-23 20:27:09 +00:00

typeswitch1.go

…

typeswitch2.go

cmd/compile: move duplicate type-case checking into typecheck

2019-09-11 23:33:11 +00:00

typeswitch2b.go

go/types, types2: use "and not used" instead of "but not used" in error messages

2022-09-27 21:10:19 +00:00

typeswitch3.go

cmd/compile/internal/types2: better error for type assertion/switch on type parameter value

2021-11-12 22:20:51 +00:00

typeswitch.go

…

uintptrescapes2.go

[dev.typeparams] cmd/compile: skip escape analysis diagnostics for wrappers

2021-06-24 18:24:24 +00:00

uintptrescapes3.go

cmd/compile: fix //go:uintptrescapes for basic method calls

2019-11-05 00:26:30 +00:00

uintptrescapes.go

…

uintptrkeepalive.go

cmd/compile: add //go:uintptrkeepalive

2022-04-21 18:06:38 +00:00

undef.go

…

unsafe_slice_data.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

unsafe_string_data.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

unsafe_string.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

unsafebuiltins.go

cmd/compile: add support for unsafe.{String,StringData,SliceData}

2022-08-31 17:15:15 +00:00

used.go

[dev.typeparams] all: merge dev.regabi (07569da) into dev.typeparams

2020-12-28 00:39:17 -08:00

utf.go

…

varerr.go

[dev.typeparams] test: enable some more errorcheck tests

2020-12-04 21:22:23 +00:00

varinit.go

…

wasmexport2.go

cmd/compile: allow more types for wasmimport/wasmexport parameters and results

2024-11-11 17:11:50 +00:00

wasmexport.go

cmd/compile: add basic wasmexport support

2024-08-09 20:07:54 +00:00

wasmmemsize.go

test: add a test for wasm memory usage

2024-10-28 13:27:58 +00:00

weak.go

weak: prevent unsafe conversions using weak pointers

2025-02-06 13:16:59 -08:00

winbatch.go

all: update to use filepath.WalkDir instead of filepath.Walk

2020-12-02 16:33:57 +00:00

writebarrier.go

cmd/compile: don't emit write barriers for offsets of global addresses

2021-08-23 19:46:36 +00:00

zerodivide.go

all: use bytes.Cut, strings.Cut

2021-10-06 15:53:04 +00:00

zerosize.go

cmd/link: put zero-sized data symbols at same address as runtime.zerobase

2023-04-28 18:35:43 +00:00

README.md

The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.

To run just these tests, execute:

../bin/go test cmd/internal/testdir

To run just tests from specified files in this directory, execute:

../bin/go test cmd/internal/testdir -run='Test/(file1.go|file2.go|...)'

Standard library tests should be written as regular Go tests in the appropriate package.

The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:

it is most naturally expressed using the test runner; or
it is also applicable to gccgo and other Go tool chains.