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eric fang 0a52d80666 cmd/compile/internal/ssa: optimize memory moving on arm64 
This CL optimizes memory moving with LDP and STP on arm64.

Benchmarks:
name              old time/op  new time/op  delta
ClearFat7-160     1.08ns ± 0%  0.95ns ± 0%  -11.41%  (p=0.008 n=5+5)
ClearFat8-160     0.84ns ± 0%  0.84ns ± 0%   -0.95%  (p=0.008 n=5+5)
ClearFat11-160    1.08ns ± 0%  0.95ns ± 0%  -11.46%  (p=0.008 n=5+5)
ClearFat12-160    0.95ns ± 0%  0.95ns ± 0%     ~     (p=0.063 n=4+5)
ClearFat13-160    1.08ns ± 0%  0.95ns ± 0%  -11.45%  (p=0.008 n=5+5)
ClearFat14-160    1.08ns ± 0%  0.95ns ± 0%  -11.47%  (p=0.008 n=5+5)
ClearFat15-160    1.24ns ± 0%  0.95ns ± 0%  -22.98%  (p=0.029 n=4+4)
ClearFat16-160    0.84ns ± 0%  0.83ns ± 0%   -0.11%  (p=0.008 n=5+5)
ClearFat24-160    2.15ns ± 0%  2.15ns ± 0%     ~     (all equal)
ClearFat32-160    2.86ns ± 0%  2.86ns ± 0%     ~     (p=0.333 n=5+4)
ClearFat40-160    2.15ns ± 0%  2.15ns ± 0%     ~     (all equal)
ClearFat48-160    3.32ns ± 1%  3.31ns ± 1%     ~     (p=0.690 n=5+5)
ClearFat56-160    2.15ns ± 0%  2.15ns ± 0%     ~     (all equal)
ClearFat64-160    3.25ns ± 1%  3.26ns ± 1%     ~     (p=0.841 n=5+5)
ClearFat72-160    2.22ns ± 0%  2.22ns ± 0%     ~     (p=0.444 n=5+5)
ClearFat128-160   4.03ns ± 0%  4.04ns ± 0%   +0.32%  (p=0.008 n=5+5)
ClearFat256-160   6.44ns ± 0%  6.44ns ± 0%   +0.08%  (p=0.016 n=4+5)
ClearFat512-160   12.2ns ± 0%  12.2ns ± 0%   +0.13%  (p=0.008 n=5+5)
ClearFat1024-160  24.3ns ± 0%  24.3ns ± 0%     ~     (p=0.167 n=5+5)
ClearFat1032-160  24.5ns ± 0%  24.5ns ± 0%     ~     (p=0.238 n=4+5)
ClearFat1040-160  29.2ns ± 0%  29.3ns ± 0%   +0.34%  (p=0.008 n=5+5)
CopyFat7-160      1.43ns ± 0%  1.07ns ± 0%  -24.97%  (p=0.008 n=5+5)
CopyFat8-160      0.89ns ± 0%  0.89ns ± 0%     ~     (p=0.238 n=5+5)
CopyFat11-160     1.43ns ± 0%  1.07ns ± 0%  -24.97%  (p=0.008 n=5+5)
CopyFat12-160     1.07ns ± 0%  1.07ns ± 0%     ~     (p=0.238 n=5+4)
CopyFat13-160     1.43ns ± 0%  1.07ns ± 0%     ~     (p=0.079 n=4+5)
CopyFat14-160     1.43ns ± 0%  1.07ns ± 0%  -24.95%  (p=0.008 n=5+5)
CopyFat15-160     1.79ns ± 0%  1.07ns ± 0%     ~     (p=0.079 n=4+5)
CopyFat16-160     1.07ns ± 0%  1.07ns ± 0%     ~     (p=0.444 n=5+5)
CopyFat24-160     1.84ns ± 2%  1.67ns ± 0%   -9.28%  (p=0.008 n=5+5)
CopyFat32-160     3.22ns ± 0%  2.92ns ± 0%   -9.40%  (p=0.008 n=5+5)
CopyFat64-160     3.64ns ± 0%  3.57ns ± 0%   -1.96%  (p=0.008 n=5+5)
CopyFat72-160     3.56ns ± 0%  3.11ns ± 0%  -12.89%  (p=0.008 n=5+5)
CopyFat128-160    5.06ns ± 0%  5.06ns ± 0%   +0.04%  (p=0.048 n=5+5)
CopyFat256-160    9.13ns ± 0%  9.13ns ± 0%     ~     (p=0.659 n=5+5)
CopyFat512-160    17.4ns ± 0%  17.4ns ± 0%     ~     (p=0.167 n=5+5)
CopyFat520-160    17.2ns ± 0%  17.3ns ± 0%   +0.37%  (p=0.008 n=5+5)
CopyFat1024-160   34.1ns ± 0%  34.0ns ± 0%     ~     (p=0.127 n=5+5)
CopyFat1032-160   80.9ns ± 0%  34.2ns ± 0%  -57.74%  (p=0.008 n=5+5)
CopyFat1040-160   94.4ns ± 0%  41.7ns ± 0%  -55.78%  (p=0.016 n=5+4)

Change-Id: I14186f9f82b0ecf8b6c02191dc5da566b9a21e6c
Reviewed-on: https://go-review.googlesource.com/c/go/+/421654
Reviewed-by: Cherry Mui <cherryyz@google.com>
Run-TryBot: Eric Fang <eric.fang@arm.com>
Reviewed-by: Keith Randall <khr@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-08-23 03:09:07 +00:00
..
abi cmd/compile: restore tail call for method wrappers 2021-09-17 22:59:44 +00:00
alias3.dir
asmhdr.dir cmd/compile: use exact constant in go_asm.h 2022-01-10 21:27:19 +00:00
bench test/bench/go1: fix size for RegexpMatchMedium_32 2021-07-18 21:03:43 +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/internal/inline: revise closure inl position fix 2021-11-24 15:55:56 +00:00
closure5.dir test: use dot-relative imports where appropriate 2022-03-24 02:14:15 +00:00
codegen cmd/compile/internal/ssa: optimize memory moving on arm64 2022-08-23 03:09:07 +00:00
ddd2.dir
dwarf
fixedbugs test: add test that caused gccgo crash 2022-08-19 03:32:27 +00:00
import2.dir
import4.dir
interface cmd/compile: require -p flag 2022-03-09 21:31:58 +00:00
intrinsic.dir
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
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
runtime
stress all: update references to symbols moved from io/ioutil to io 2021-04-05 17:51:15 +00:00
syntax cmd/compile/internal/syntax: better errors for syntax errors in lists 2022-03-31 00:26:58 +00:00
typeparam cmd/compile: enable more inlining for unified IR 2022-08-18 17:26:40 +00:00
uintptrescapes.dir
64bit.go
235.go
alg.go
alias1.go
alias2.go cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +00:00
alias3.go
alias.go
align.go
append1.go cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +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
atomicload.go
bigalg.go
bigmap.go
blank1.go
blank.go
bom.go
bombad.go
bounds.go
cannotassign.go
chancap.go
chanlinear.go
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
clearfat.go
closedchan.go
closure1.go
closure2.go
closure3.go cmd/compile: disable inlining functions with closures for now 2021-02-24 21:34:21 +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
cmp.go
cmplx.go
cmplxdivide1.go
cmplxdivide.c
cmplxdivide.go
complit1.go test: fix error check messages for 2 types2 tests 2021-06-02 05:14:45 +00:00
complit.go
compos.go
const1.go
const2.go
const3.go
const4.go
const5.go
const6.go
const7.go go/types, types2: check integer constant literal overflow 2022-08-16 01:11:29 +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
convert1.go
convert2.go cmd/compile: allow conversion from slice to array ptr 2021-04-21 00:53:48 +00:00
convert3.go
convert4.go cmd/compile: allow conversion from slice to array ptr 2021-04-21 00:53:48 +00:00
convert.go
convlit1.go
convlit.go cmd/compile/internal/types2: refactor untyped conversions 2021-03-23 05:11:09 +00:00
convT2X.go
copy1.go
copy.go
crlf.go
ddd1.go cmd/compile: match Go 1.17 compiler error messages more closely 2021-11-12 23:07:01 +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
deferfin.go
defernil.go
deferprint.go
deferprint.out
devirt.go [dev.typeparams] cmd/compile: simplify interface conversions 2021-08-09 16:10:20 +00:00
directive2.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
directive.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +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
eof1.go
eof.go
escape2.go [dev.typeparams] cmd/compile: move call logic from order.go to escape 2021-06-23 16:48:12 +00:00
escape2n.go [dev.typeparams] cmd/compile: move call logic from order.go to escape 2021-06-23 16:48:12 +00:00
escape3.go
escape4.go [dev.regabi] cmd/compile: convert OPANIC argument to interface{} during typecheck 2021-01-18 05:55:08 +00:00
escape5.go [dev.typeparams] test: rename blank functions 2021-07-28 21:41:07 +00:00
escape_array.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_calls.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_closure.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_field.go
escape_goto.go [dev.typeparams] test: rename blank functions 2021-07-28 21:41:07 +00:00
escape_hash_maphash.go
escape_iface_nounified.go [dev.unified] test: break escape_iface.go into unified/nounified variants 2022-06-30 18:41:26 +00:00
escape_iface_unified.go [dev.unified] cmd/compile/internal/noder: implicit conversions for multi-valued expressions 2022-06-30 18:42:24 +00:00
escape_iface.go [dev.unified] test: break escape_iface.go into unified/nounified variants 2022-06-30 18:41:26 +00:00
escape_indir.go
escape_level.go
escape_map.go
escape_param.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_runtime_atomic.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_selfassign.go
escape_slice.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_struct_param1.go
escape_struct_param2.go
escape_struct_return.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape_sync_atomic.go
escape_unsafe.go [dev.typeparams] cmd/compile: simplify ~r/~b naming 2021-05-26 23:50:32 +00:00
escape.go
fibo.go
finprofiled.go
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
func1.go
func2.go
func3.go
func4.go
func5.go
func6.go
func7.go
func8.go
func.go
funcdup2.go
funcdup.go
fuse.go test: do not run fuse test in noopt mode 2021-04-28 15:55:10 +00:00
gc1.go
gc2.go
gc.go
gcgort.go
gcstring.go
goprint.go
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 test: re-enable most go/tests that were disabled because of types2 differences 2022-01-11 02:26:58 +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
indirect1.go
indirect.go
init1.go
init.go
initcomma.go
initempty.go
initexp.go cmd/compile: fix exponential-time init-cycle reporting 2021-01-08 17:14:20 +00:00
initialize.go
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
inline_big.go [dev.typeparams] cmd/compile/internal/inline: refactor mkinlcall 2021-05-27 23:40:56 +00:00
inline_caller.go
inline_callers.go
inline_endian.go test: skip endian inlining test on noopt builder 2021-10-07 00:39:17 +00:00
inline_literal.go
inline_math_bits_rotate.go
inline_nounified.go [dev.unified] test: extract different inline test between unified and non-unified 2022-06-15 21:22:56 +00:00
inline_sync.go
inline_unified.go [dev.unified] test: extract different inline test between unified and non-unified 2022-06-15 21:22:56 +00:00
inline_variadic.go [dev.typeparams] cmd/compile: simplify inlining variadic calls 2021-05-26 23:50:45 +00:00
inline.go [dev.unified] test: extract different inline test between unified and non-unified 2022-06-15 21:22:56 +00:00
int_lit.go
intcvt.go
intrinsic_atomic.go misc, test: fix test error for loong64 2022-05-20 16:16:37 +00:00
intrinsic.go
iota.go
label1.go
label.go
linkmain_run.go cmd/compile: require -p flag 2022-03-09 21:31:58 +00:00
linkmain.go
linkname3.go test: re-enable a bunch of tests with types2 2021-12-03 16:24:32 +00:00
linkname.go
linkobj.go cmd/compile: require -p flag 2022-03-09 21:31:58 +00:00
linkx_run.go
linkx.go
literal2.go
literal.go
live1.go
live2.go
live_regabi.go cmd/compile: stop using VARKILL 2022-08-18 17:36:38 +00:00
live_uintptrkeepalive.go all: fix spelling 2022-05-17 19:51:29 +00:00
live.go cmd/compile: stop using VARKILL 2022-08-18 17:36:38 +00:00
loopbce.go cmd/compile: rework induction variable detector 2022-07-06 17:00:37 +00:00
mainsig.go
makechan.go cmd/compile/internal/types2: add unsafe.Add and unsafe.Slice 2021-04-23 00:41:01 +00:00
makemap.go cmd/compile/internal/types2: add unsafe.Add and unsafe.Slice 2021-04-23 00:41:01 +00:00
makenew.go
makeslice.go
mallocfin.go
map1.go
map.go
mapclear.go
maplinear.go
maymorestack.go cmd/{asm,compile,internal/obj}: add "maymorestack" support 2021-11-05 00:52:06 +00:00
mergemul.go
method1.go
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
method7.go [dev.typeparams] cmd/compile: fix MethodExpr handling with embedded fields 2021-01-26 17:05:06 +00:00
method.go
named1.go
named.go
nil.go
nilcheck.go [dev.unified] test: tweak nilcheck test 2022-06-30 18:41:59 +00:00
nilptr2.go
nilptr3.go [dev.regabi] cmd/compile: deref PAUTOHEAPs during SSA construction 2021-01-10 08:01:49 +00:00
nilptr4.go
nilptr5_aix.go
nilptr5_wasm.go
nilptr5.go
nilptr_aix.go
nilptr.go test: disable nilptr on windows/arm64 2021-02-19 00:40:22 +00:00
nosplit.go misc, test: fix test error for loong64 2022-05-20 16:16:37 +00:00
notinheap2.go
notinheap3.go
notinheap.go
nowritebarrier.go
nul1.go
opt_branchlikely.go
parentype.go
peano.go
phiopt.go cmd/compile/internal/ssa: strengthen phiopt pass 2021-03-29 05:50:11 +00:00
print.go
print.out
printbig.go
printbig.out
prove_constant_folding.go cmd/compile: fold constants found by prove 2022-05-04 20:30:17 +00:00
prove.go cmd/compile: don't use OFORUNTIL when implementing range loops 2022-08-18 17:32:44 +00:00
range.go
README.md
recover1.go
recover2.go
recover3.go
recover4.go test/recover4.go: use mprotect to create a hole instead of munmap 2021-11-12 16:58:34 +00:00
recover5.go
recover.go
reflectmethod1.go
reflectmethod2.go
reflectmethod3.go
reflectmethod4.go
reflectmethod5.go
reflectmethod6.go
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
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
run.go cmd/compile: enable more inlining for unified IR 2022-08-18 17:26:40 +00:00
rune.go
runtime.go
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
sigchld.out
simassign.go
sinit_run.go cmd/compile: require -p flag 2022-03-09 21:31:58 +00:00
sinit.go
sizeof.go
slice3.go
slice3err.go
slicecap.go
sliceopt.go
solitaire.go
stack.go
stackobj2.go
stackobj3.go
stackobj.go
strcopy.go
strength.go
string_lit.go
stringrange.go
struct0.go
switch2.go
switch3.go
switch4.go
switch5.go
switch6.go cmd/compile, types2: better error message for invalid type assertion 2021-10-19 17:01:35 +00:00
switch7.go
switch.go [dev.unified] test: add switch test case for tricky nil handling 2022-07-19 23:30:49 +00:00
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
typeswitch1.go
typeswitch2.go
typeswitch2b.go
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
uintptrescapes.go
uintptrkeepalive.go cmd/compile: add //go:uintptrkeepalive 2022-04-21 18:06:38 +00:00
undef.go
unsafebuiltins.go unsafe: allow unsafe.Slice up to end of address space 2021-10-13 18:15:16 +00:00
used.go
utf.go
varerr.go
varinit.go
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

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 run run.go

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

../bin/go run run.go -- 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.