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Julian Zhu dfebef1c04 cmd/compile: fold negation into addition/subtraction on arm64 
Fold negation into addition/subtraction and avoid double negation.

platform: linux/arm64

file      before    after     Δ       %
addr2line 3628108   3628116   +8      +0.000%
asm       6208353   6207857   -496    -0.008%
buildid   3460682   3460418   -264    -0.008%
cgo       5572988   5572492   -496    -0.009%
compile   26042159  26041039  -1120   -0.004%
cover     6304328   6303472   -856    -0.014%
dist      4139330   4139098   -232    -0.006%
doc       9429305   9428065   -1240   -0.013%
fix       3997189   3996733   -456    -0.011%
link      8212128   8210280   -1848   -0.023%
nm        3620056   3619696   -360    -0.010%
objdump   5920289   5919233   -1056   -0.018%
pack      2892250   2891778   -472    -0.016%
pprof     17094569  17092745  -1824   -0.011%
test2json 3335825   3335529   -296    -0.009%
trace     15842080  15841456  -624    -0.004%
vet       9472194   9471106   -1088   -0.011%
go        19081541  19081509  -32     -0.000%
total     154253374 154240622 -12752  -0.008%

platform: darwin/arm64

file    before    after     Δ       %
compile 27152002  27135490  -16512  -0.061%
link    8372914   8356402   -16512  -0.197%
go      19154802  19154778  -24     -0.000%
total   157734180 157701132 -33048  -0.021%

Change-Id: I15a349bfbaf7333ec3e4a62ae4d06f3f371dfb1d
Reviewed-on: https://go-review.googlesource.com/c/go/+/673715
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: David Chase <drchase@google.com>
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
 		2025-05-20 11:08:28 -07:00
..
abi
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alias3.dir
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arenas
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asmhdr.dir
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chan
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closure3.dir cmd/compile: use very high budget for once-called closures 2024-11-22 02:04:41 +00:00
closure5.dir
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codegen cmd/compile: fold negation into addition/subtraction on arm64 2025-05-20 11:08:28 -07:00
ddd2.dir
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dwarf
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fixedbugs cmd/compile: allocate backing store for append on the stack 2025-05-19 16:14:53 -07:00
import2.dir
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import4.dir
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interface
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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
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linkname.dir
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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
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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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README.md
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alg.go
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alias.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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align.go
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append.go
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append1.go
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args.go
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armimm.go
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asmhdr.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
assign1.go
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atomicload.go
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bigalg.go
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bigmap.go
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blank.go
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blank1.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
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char_lit.go
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char_lit1.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
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clearfat.go
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closedchan.go
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closure.go
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closure1.go
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closure2.go
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closure3.go
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closure4.go
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closure5.go
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closure6.go
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closure7.go
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cmp.go
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cmp6.go
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cmplx.go
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cmplxdivide.c
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cmplxdivide.go
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cmplxdivide1.go
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complit.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
compos.go
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const.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
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const8.go
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convT2X.go
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convert.go
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convert1.go
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convert2.go
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convert3.go
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convert4.go
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convinline.go
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convlit.go
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convlit1.go
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copy.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
crlf.go
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ddd.go
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ddd1.go
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ddd2.go
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decl.go
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declbad.go
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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
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directive.go
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directive2.go
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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
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eof.go
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eof1.go
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escape.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
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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
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escape_hash_maphash.go
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escape_iface.go
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escape_iface_data.go cmd/compile/internal/escape: additional constant and zero value tests and logging 2025-05-20 09:19:42 -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
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escape_param.go
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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
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escape_sync_atomic.go
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escape_unsafe.go
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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_lit.go
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float_lit2.go
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float_lit3.go
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floatcmp.go
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for.go
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func.go
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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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funcdup.go
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funcdup2.go
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fuse.go cmd/compile: handle boolean and pointer relations 2024-08-07 16:07:55 +00:00
gc.go
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gc1.go
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gc2.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
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helloworld.go
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helloworld.out
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if.go
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import.go
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import1.go
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import2.go
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import4.go
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import5.go
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import6.go
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index.go
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index0.go
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index1.go
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index2.go
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indirect.go
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indirect1.go
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init.go
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init1.go
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initcomma.go
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initexp.go
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initialize.go
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initializerr.go
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initloop.go go/types: improve recursive type error message 2024-10-22 22:20:29 +00:00
inline.go cmd/compile: remove no-longer-necessary recursive inlining checks 2025-03-06 10:07:17 -08:00
inline_big.go
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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
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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
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int_lit.go
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intcvt.go
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intrinsic.go
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intrinsic_atomic.go
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iota.go
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label.go
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label1.go
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linkmain.go
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linkmain_run.go
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linkname.go
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linkname3.go cmd/compile: disallow linkname referring to instantiations 2024-05-15 19:27:25 +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
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linkx.go
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linkx_run.go
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literal.go
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literal2.go
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live.go runtime: rename mapiterinit and mapiternext 2025-01-28 10:54:43 -08:00
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 runtime: rename mapiterinit and mapiternext 2025-01-28 10:54:43 -08:00
live_uintptrkeepalive.go
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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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map.go
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map1.go
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mapclear.go
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maplinear.go
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maymorestack.go
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mergemul.go
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method.go
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method1.go
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method2.go
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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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named.go
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named1.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
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nilptr.go cmd/link: use >4GB base address for 64-bit PE binaries 2025-05-12 11:05:28 -07:00
nilptr2.go
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nilptr3.go
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nilptr4.go
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nilptr5.go
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nilptr5_aix.go
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nilptr5_wasm.go
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nilptr_aix.go
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noinit.go
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nosplit.go cmd/internal/objabi, internal/runtime: increase nosplit limit on OpenBSD 2024-12-06 00:35:41 +00:00
nowritebarrier.go
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nul1.go
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opt_branchlikely.go
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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.go cmd/compile: use min & max builtins to assert constant bounds in prove's tests 2025-03-11 19:51:59 -07:00
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
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prove_popcount.go cmd/compile: compute bits.OnesCount's limits from argument's limits 2025-03-11 20:17:36 -07:00
range.go
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range2.go
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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
rangegen.go test: skip rangegen.go on 32-bit platforms 2023-12-18 23:35:19 +00:00
recover.go
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recover1.go
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recover2.go
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recover3.go
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recover4.go
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recover5.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
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reflectmethod8.go
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rename.go
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rename1.go
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reorder.go
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reorder2.go
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retjmp.go
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return.go
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rotate.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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rune.go
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runtime.go
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shift1.go
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shift2.go
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shift3.go
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sieve.go
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sigchld.go
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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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stackobj.go
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stackobj2.go
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stackobj3.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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switch.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
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switch7.go
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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
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torture.go
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turing.go
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typecheck.go
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typecheckloop.go
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typeswitch.go
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typeswitch1.go
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typeswitch2.go
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typeswitch2b.go
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typeswitch3.go
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uintptrescapes.go
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uintptrescapes2.go
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uintptrescapes3.go
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uintptrkeepalive.go
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undef.go
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unsafe_slice_data.go
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unsafe_string.go
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unsafe_string_data.go
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unsafebuiltins.go
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used.go
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utf.go
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varerr.go
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varinit.go
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wasmexport.go cmd/compile: add basic wasmexport support 2024-08-09 20:07:54 +00:00
wasmexport2.go cmd/compile: allow more types for wasmimport/wasmexport parameters and results 2024-11-11 17:11:50 +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
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writebarrier.go
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zerodivide.go
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zerosize.go
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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.