go/test at 88da9ccb98ffaf84bb06b98c9a24af5d0a7025d2 - go

qbit/go

mirror of https://github.com/golang/go synced 2024-11-17 23:24:50 -07:00

History

erifan01 159b2de442 cmd/compile: optimize math/bits.Div32 for arm64 Benchmark: name old time/op new time/op delta Div-8 22.0ns ± 0% 22.0ns ± 0% ~ (all equal) Div32-8 6.51ns ± 0% 3.00ns ± 0% -53.90% (p=0.000 n=10+8) Div64-8 22.5ns ± 0% 22.5ns ± 0% ~ (all equal) Code: func div32(hi, lo, y uint32) (q, r uint32) {return bits.Div32(hi, lo, y)} Before: 0x0020 00032 (test.go:24) MOVWU "".y+8(FP), R0 0x0024 00036 ($GOROOT/src/math/bits/bits.go:472) CBZW R0, 132 0x0028 00040 ($GOROOT/src/math/bits/bits.go:472) MOVWU "".hi(FP), R1 0x002c 00044 ($GOROOT/src/math/bits/bits.go:472) CMPW R1, R0 0x0030 00048 ($GOROOT/src/math/bits/bits.go:472) BLS 96 0x0034 00052 ($GOROOT/src/math/bits/bits.go:475) MOVWU "".lo+4(FP), R2 0x0038 00056 ($GOROOT/src/math/bits/bits.go:475) ORR R1<<32, R2, R1 0x003c 00060 ($GOROOT/src/math/bits/bits.go:476) CBZ R0, 140 0x0040 00064 ($GOROOT/src/math/bits/bits.go:476) UDIV R0, R1, R2 0x0044 00068 (test.go:24) MOVW R2, "".q+16(FP) 0x0048 00072 ($GOROOT/src/math/bits/bits.go:476) UREM R0, R1, R0 0x0050 00080 (test.go:24) MOVW R0, "".r+20(FP) 0x0054 00084 (test.go:24) MOVD -8(RSP), R29 0x0058 00088 (test.go:24) MOVD.P 32(RSP), R30 0x005c 00092 (test.go:24) RET (R30) After: 0x001c 00028 (test.go:24) MOVWU "".y+8(FP), R0 0x0020 00032 (test.go:24) CBZW R0, 92 0x0024 00036 (test.go:24) MOVWU "".hi(FP), R1 0x0028 00040 (test.go:24) CMPW R0, R1 0x002c 00044 (test.go:24) BHS 84 0x0030 00048 (test.go:24) MOVWU "".lo+4(FP), R2 0x0034 00052 (test.go:24) ORR R1<<32, R2, R4 0x0038 00056 (test.go:24) UDIV R0, R4, R3 0x003c 00060 (test.go:24) MSUB R3, R4, R0, R4 0x0040 00064 (test.go:24) MOVW R3, "".q+16(FP) 0x0044 00068 (test.go:24) MOVW R4, "".r+20(FP) 0x0048 00072 (test.go:24) MOVD -8(RSP), R29 0x004c 00076 (test.go:24) MOVD.P 16(RSP), R30 0x0050 00080 (test.go:24) RET (R30) UREM instruction in the previous assembly code will be converted to UDIV and MSUB instructions on arm64. However the UDIV instruction in UREM is unnecessary, because it's a duplicate of the previous UDIV. This CL adds a rule to have this extra UDIV instruction removed by CSE. Change-Id: Ie2508784320020b2de022806d09f75a7871bb3d7 Reviewed-on: https://go-review.googlesource.com/c/159577 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Bryan C. Mills <bcmills@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org>		2019-03-03 20:20:10 +00:00
..
alias3.dir
bench	test/bench/garbage: update Benchmarks Game URL to new page	2018-09-24 17:11:42 +00:00
chan	test/chan: fix broken link to Squinting at Power Series	2019-02-06 20:54:16 +00:00
closure3.dir	cmd/compile: encourage inlining of functions with single-call bodies	2018-11-08 17:29:23 +00:00
codegen	cmd/compile: optimize math/bits.Div32 for arm64	2019-03-03 20:20:10 +00:00
ddd2.dir
dwarf
fixedbugs	cmd/compile: make KeepAlive work on stack object	2019-03-01 15:36:52 +00:00
import2.dir
import4.dir
interface
intrinsic.dir
ken
linkname.dir
method4.dir
retjmp.dir
stress
syntax
uintptrescapes.dir
64bit.go
235.go
alg.go
alias1.go
alias2.go
alias3.go
alias.go
align.go
append1.go
append.go
args.go
armimm.go
assign1.go
assign.go
atomicload.go
bigalg.go
bigmap.go
blank1.go
blank.go
bom.go
bombad.go
bounds.go
chancap.go	runtime: handle 64bits addresses for AIX	2018-11-26 14:06:28 +00:00
chanlinear.go
char_lit1.go
char_lit.go
checkbce.go	test: restore binary.BigEndian use in checkbce	2018-09-24 21:20:51 +00:00
clearfat.go
closedchan.go
closure1.go
closure2.go
closure3.go	all: fix a bunch of misspellings	2018-10-06 15:40:03 +00:00
closure4.go
closure.go
cmp6.go
cmp.go
cmplx.go	Revert "cmd/compile: rewrite f(g()) for multi-value g() during typecheck"	2019-03-01 05:58:51 +00:00
cmplxdivide1.go
cmplxdivide.c
cmplxdivide.go
complit1.go
complit.go
compos.go
const1.go
const2.go
const3.go
const4.go
const5.go
const6.go
const.go
convert1.go
convert2.go
convert3.go
convert.go
convlit1.go
convlit.go
convT2X.go
copy1.go	Revert "cmd/compile: rewrite f(g()) for multi-value g() during typecheck"	2019-03-01 05:58:51 +00:00
copy.go
crlf.go
ddd1.go
ddd2.go
ddd.go
decl.go
declbad.go
defer.go
deferfin.go
deferprint.go
deferprint.out
devirt.go
divide.go
divmod.go
empty.go
env.go
eof1.go
eof.go
escape2.go	cmd/compile/internal/gc: unify self-assignment checks in esc.go	2018-09-20 09:46:11 +00:00
escape2n.go	cmd/compile/internal/gc: unify self-assignment checks in esc.go	2018-09-20 09:46:11 +00:00
escape3.go
escape4.go
escape5.go	cmd/compile: fix unnamed parameter handling in escape analysis	2018-12-04 23:01:00 +00:00
escape_array.go
escape_because.go	cmd/compile: flow interface data to heap if CONVIFACE of a non-direct interface escapes	2019-02-21 15:14:45 +00:00
escape_calls.go
escape_closure.go
escape_field.go
escape_iface.go
escape_indir.go
escape_level.go
escape_map.go
escape_param.go	cmd/compile: flow interface data to heap if CONVIFACE of a non-direct interface escapes	2019-02-21 15:14:45 +00:00
escape_slice.go
escape_struct_param1.go
escape_struct_param2.go
escape_struct_return.go
escape.go
fibo.go
finprofiled.go
float_lit2.go
float_lit3.go
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
gc1.go
gc2.go
gc.go
gcgort.go
gcstring.go
goprint.go
goprint.out
goto.go
heapsampling.go
helloworld.go
helloworld.out
if.go
import1.go
import2.go
import4.go
import5.go
import6.go
import.go
index0.go
index1.go
index2.go
index.go
indirect1.go
indirect.go
init1.go
init.go
initcomma.go
initialize.go
initializerr.go
initloop.go
inline_big.go
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_literal.go
inline_math_bits_rotate.go
inline_variadic.go
inline.go	cmd/compile: encourage inlining of functions with single-call bodies	2018-11-08 17:29:23 +00:00
int_lit.go
intcvt.go
intrinsic_atomic.go
intrinsic.go
iota.go
label1.go
label.go
linkmain_run.go
linkmain.go
linkname.go
linkobj.go
linkx_run.go
linkx.go
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,runtime: remove ambiguously live logic	2018-10-03 19:54:16 +00:00
live_syscall.go	cmd/compile: encourage inlining of functions with single-call bodies	2018-11-08 17:29:23 +00:00
live.go	cmd/compile: provide types for all order-allocated temporaries	2018-10-15 16:07:52 +00:00
locklinear.go
loopbce.go	cmd/compile: check for negative upper bound to IsSliceInBounds	2018-12-07 23:04:58 +00:00
makechan.go
makemap.go
makenew.go
mallocfin.go
map1.go
map.go
mapclear.go
maplinear.go
mergemul.go
method1.go
method2.go
method3.go
method4.go
method5.go
method6.go
method7.go
method.go
named1.go
named.go
nil.go
nilcheck.go
nilptr2.go
nilptr3.go	cmd/compile: fix nilcheck for AIX	2018-11-26 14:13:53 +00:00
nilptr4.go
nilptr5_aix.go	test: fix nilptr5 for AIX	2018-11-27 15:36:08 +00:00
nilptr5_wasm.go	cmd/compile: fix nilcheck for AIX	2018-11-26 14:13:53 +00:00
nilptr5.go	cmd/compile: fix nilcheck for AIX	2018-11-26 14:13:53 +00:00
nilptr_aix.go	cmd/compile: fix nilcheck for AIX	2018-11-26 14:13:53 +00:00
nilptr.go	cmd/compile: fix nilcheck for AIX	2018-11-26 14:13:53 +00:00
nosplit.go	test: add a go.mod file in the working directory of nosplit.go	2019-02-26 02:44:45 +00:00
notinheap2.go
notinheap3.go	cmd/compile: omit write barriers for slice clears of go:notinheap pointers	2018-12-05 21:54:54 +00:00
notinheap.go	cmd/compile: disallow converting string to notinheap slice	2018-11-02 19:53:59 +00:00
nowritebarrier.go
nul1.go
opt_branchlikely.go
parentype.go
peano.go
phiopt.go
print.go
print.out
printbig.go
printbig.out
prove.go	cmd/compile: fix deriving from x+d >= w on overflow in prove pass	2019-01-02 19:28:06 +00:00
range.go
README.md
recover1.go
recover2.go
recover3.go
recover4.go
recover5.go
recover.go
reflectmethod1.go
reflectmethod2.go
reflectmethod3.go
reflectmethod4.go
rename1.go
rename.go
reorder2.go
reorder.go
retjmp.go
return.go
rotate0.go
rotate1.go
rotate2.go
rotate3.go
rotate.go
run.go	cmd/compile: use innermost line number for -S	2018-12-11 20:24:45 +00:00
rune.go
runtime.go
shift1.go
shift2.go
sieve.go
sigchld.go
sigchld.out
simassign.go
sinit_run.go
sinit.go	cmd/compile: fix static initializer	2018-12-03 16:48:21 +00:00
sizeof.go
slice3.go
slice3err.go
slicecap.go
sliceopt.go
solitaire.go
stack.go
stackobj2.go	test: stress test for stack objects	2018-10-03 19:54:29 +00:00
stackobj3.go	cmd/compile,runtime: remove ambiguously live logic	2018-10-03 19:54:16 +00:00
stackobj.go	cmd/compile,runtime: remove ambiguously live logic	2018-10-03 19:54:16 +00:00
strcopy.go
strength.go
string_lit.go
stringrange.go
struct0.go
switch2.go
switch3.go
switch4.go
switch5.go	Revert "fmt: fix incorrect format of whole-number floats when using %#v"	2018-10-16 21:54:35 +00:00
switch6.go
switch7.go
switch.go
tinyfin.go
torture.go
turing.go
typecheck.go
typecheckloop.go
typeswitch1.go
typeswitch2.go	test: fix spelling of `caught be the compiler` to `caught by the compiler`	2018-10-04 00:49:49 +00:00
typeswitch3.go	test: fix spelling of `caught be the compiler` to `caught by the compiler`	2018-10-04 00:49:49 +00:00
typeswitch.go
uintptrescapes2.go	cmd/compile: reuse temporaries in order pass	2018-10-14 05:21:00 +00:00
uintptrescapes.go
undef.go
utf.go
varerr.go
varinit.go
writebarrier.go	cmd/compile: eliminate write barriers when writing non-heap ptrs	2018-11-29 22:23:02 +00:00
zerodivide.go

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

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.