golang.go

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Files

Keith Randall 7735dc90ed [release-branch.go1.25] cmd/compile: don't rely on loop info when there are irreducible loops

Loop information is sketchy when there are irreducible loops.
Sometimes blocks inside 2 loops can be recorded as only being part of
the outer loop. That causes tighten to move values that want to move
into such a block to move out of the loop altogether, breaking the
invariant that operations have to be scheduled after their args.

Fixes #75595

Change-Id: Idd80e6d2268094b8ae6387563081fdc1e211856a
Reviewed-on: https://go-review.googlesource.com/c/go/+/706355
Reviewed-by: David Chase <drchase@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@google.com>
(cherry picked from commit f15cd63ec4)
Reviewed-on: https://go-review.googlesource.com/c/go/+/706576

2025-10-01 11:40:47 -07:00

abi

test: migrate remaining files to go:build syntax

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

alias3.dir

…

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/internal/ssa: fix PPC64 merging of (AND (S[RL]Dconst ...)

2025-06-09 20:33:27 -07:00

ddd2.dir

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dwarf

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fixedbugs

[release-branch.go1.25] cmd/compile: don't rely on loop info when there are irreducible loops

2025-10-01 11:40:47 -07:00

import2.dir

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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

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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

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wasmmemsize.dir

test: add a test for wasm memory usage

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

64bit.go

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235.go

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alg.go

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alias1.go

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alias2.go

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

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

alias3.go

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alias.go

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align.go

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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

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args.go

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armimm.go

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asmhdr.go

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

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

assign1.go

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assign.go

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

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

atomicload.go

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bigalg.go

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bigmap.go

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blank1.go

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blank.go

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bom.go

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bombad.go

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bounds.go

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cannotassign.go

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chancap.go

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chanlinear.go

test: migrate remaining files to go:build syntax

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

char_lit1.go

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char_lit.go

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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

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closedchan.go

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closure1.go

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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

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closure5.go

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closure6.go

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closure7.go

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closure.go

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cmp6.go

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cmp.go

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cmplx.go

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cmplxdivide1.go

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cmplxdivide.c

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cmplxdivide.go

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complit1.go

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

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

complit.go

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compos.go

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const1.go

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const2.go

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const3.go

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const4.go

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const5.go

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const6.go

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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

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convert1.go

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convert2.go

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

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

convert3.go

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convert4.go

cmd/compile: implement slice-to-array conversions

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

convert.go

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convinline.go

cmd/compile: handle integer conversions in static init inliner

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

convlit1.go

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convlit.go

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convT2X.go

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copy1.go

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

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

copy.go

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crlf.go

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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

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ddd.go

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decl.go

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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

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defererrcheck.go

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

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

deferfin.go

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defernil.go

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deferprint.go

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deferprint.out

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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

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divmod.go

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embedfunc.go

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embedvers.go

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empty.go

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env.go

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

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

eof1.go

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eof.go

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escape2.go

cmd/compile: allocate backing store for append on the stack

2025-05-19 16:14:53 -07:00

escape2n.go

cmd/compile: allocate backing store for append on the stack

2025-05-19 16:14:53 -07:00

escape3.go

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escape4.go

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

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

escape5.go

cmd/compile/internal/escape: propagate constants to interface conversions to avoid allocs

2025-05-21 12:02:43 -07:00

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: allocate backing store for append on the stack

2025-05-19 16:14:53 -07:00

escape_closure.go

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

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

escape_field.go

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escape_goto.go

[dev.typeparams] test: rename blank functions

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

escape_hash_maphash.go

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escape_iface_data.go

cmd/compile/internal/walk: use global zeroVal in interface conversions for zero values

2025-05-21 12:24:22 -07:00

escape_iface.go

cmd/compile/internal/escape: propagate constants to interface conversions to avoid allocs

2025-05-21 12:02:43 -07:00

escape_indir.go

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escape_level.go

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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: allocate backing store for append on the stack

2025-05-19 16:14:53 -07:00

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

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escape_slice.go

cmd/compile: allocate backing store for append on the stack

2025-05-19 16:14:53 -07:00

escape_struct_param1.go

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escape_struct_param2.go

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escape_struct_return.go

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

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

escape_sync_atomic.go

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escape_unique.go

cmd/compile, unique: model data flow of non-string pointers

2025-05-21 20:07:36 -07:00

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

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finprofiled.go

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

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

float_lit2.go

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float_lit3.go

test: re-enable a bunch of tests with types2

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

float_lit.go

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floatcmp.go

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for.go

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

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

func1.go

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func2.go

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func3.go

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

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

func4.go

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func5.go

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func6.go

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func7.go

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func8.go

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func.go

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funcdup2.go

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funcdup.go

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fuse.go

cmd/compile: handle boolean and pointer relations

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

gc1.go

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gc2.go

test: migrate remaining files to go:build syntax

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

gc.go

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gcgort.go

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gcstring.go

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goprint.go

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goprint.out

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goto.go

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heapsampling.go

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

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

helloworld.go

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helloworld.out

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if.go

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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

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import4.go

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import5.go

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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

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index0.go

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index1.go

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index2.go

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index.go

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indirect1.go

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indirect.go

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init1.go

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init.go

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initcomma.go

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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

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inline_callers.go

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inline_endian.go

cmd/compile: allocate backing store for append on the stack

2025-05-19 16:14:53 -07:00

inline_literal.go

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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

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intcvt.go

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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

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label1.go

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label.go

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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

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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

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literal2.go

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literal.go

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live1.go

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live2.go

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

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

live_regabi.go

cmd/compile/internal/walk: convert composite literals to interfaces without allocating

2025-05-21 12:23:26 -07:00

live_uintptrkeepalive.go

test: migrate remaining files to go:build syntax

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

live.go

cmd/compile/internal/walk: convert composite literals to interfaces without allocating

2025-05-21 12:23:26 -07:00

loopbce.go

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

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

mainsig.go

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makechan.go

all: fix some comments

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

makemap.go

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makenew.go

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makeslice.go

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mallocfin.go

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map1.go

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map.go

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mapclear.go

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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

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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

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method4.go

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method5.go

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method6.go

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method7.go

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method.go

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named1.go

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named.go

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newinline.go

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

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

nil.go

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nilcheck.go

[dev.unified] test: tweak nilcheck test

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

nilptr2.go

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nilptr3.go

test: migrate remaining files to go:build syntax

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

nilptr4.go

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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

cmd/link: use >4GB base address for 64-bit PE binaries

2025-05-12 11:05:28 -07:00

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

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opt_branchlikely.go

test: migrate remaining files to go:build syntax

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

parentype.go

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peano.go

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phiopt.go

cmd/compile: add 2 phiopt cases

2025-05-08 10:18:37 -07:00

print.go

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print.out

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printbig.go

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printbig.out

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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

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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

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recover2.go

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recover3.go

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recover4.go

test: migrate remaining files to go:build syntax

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

recover5.go

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recover.go

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reflectmethod1.go

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reflectmethod2.go

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reflectmethod3.go

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reflectmethod4.go

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reflectmethod5.go

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reflectmethod6.go

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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

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reorder2.go

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reorder.go

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retjmp.go

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return.go

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rotate0.go

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rotate1.go

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rotate2.go

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rotate3.go

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rotate.go

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rune.go

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runtime.go

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shift1.go

test: re-enable a bunch of tests with types2

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

shift2.go

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shift3.go

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

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

sieve.go

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sigchld.go

test: migrate remaining files to go:build syntax

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

sigchld.out

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simassign.go

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sizeof.go

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slice3.go

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slice3err.go

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slicecap.go

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sliceopt.go

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solitaire.go

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stack.go

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stackobj2.go

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stackobj3.go

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stackobj.go

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strcopy.go

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strength.go

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string_lit.go

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stringrange.go

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struct0.go

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switch2.go

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

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

switch3.go

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switch4.go

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switch5.go

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switch6.go

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

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

switch7.go

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switch.go

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

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

tailcall.go

Revert "cmd/compile: Enable inlining of tail calls"

2025-06-04 08:27:44 -07:00

tighten.go

cmd/compile: pair loads and stores on arm64

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

tinyfin.go

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torture.go

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turing.go

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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

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typeswitch2.go

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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

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uintptrescapes.go

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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

…

utf.go

…

varerr.go

…

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

…

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.