languages/go
languages/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-09-06 00:19:45 +00:00
Code Issues Packages Projects Releases Wiki Activity
go/test
History
Lynn Boger 4481042c43 cmd/compile: update rules to generate more prefixed instructions 
This modifies some existing rules to allow more prefixed instructions
to be generated when using GOPPC64=power10. Some rules also check
if PCRel is available, which is currently supported for linux/ppc64le
and linux/ppc64 (internal linking only).

Prior to p10, DS-offset loads and stores had a 16 bit size limit for
the offset field. If the offset of the data for load or store was
beyond this range then an indexed load or store would be selected by
the rules.

In p10 the assembler can generate prefixed instructions in this case,
but does not if an indexed instruction was selected during the lowering
pass.

This allows many more cases to use prefixed loads or stores, reducing
function sizes and improving performance in some cases where the code
change happens in key loops.

For example in strconv BenchmarkAppendQuoteRune before:

  12c5e4:       15 00 10 06     pla     r10,1425660
  12c5e8:       fc c0 40 39
  12c5ec:       00 00 6a e8     ld      r3,0(r10)
  12c5f0:       10 00 aa e8     ld      r5,16(r10)

After this change:

  12a828:       15 00 10 04     pld     r3,1433272
  12a82c:       b8 de 60 e4
  12a830:       15 00 10 04     pld     r5,1433280
  12a834:       c0 de a0 e4

Performs better in the second case.

A testcase was added to verify that the rules correctly select a load or
store based on the offset and whether power10 or earlier.

Change-Id: I4335fed0bd9b8aba8a4f84d69b89f819cc464846
Reviewed-on: https://go-review.googlesource.com/c/go/+/477398
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Archana Ravindar <aravind5@in.ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Paul Murphy <murp@ibm.com>
2023-05-15 18:20:54 +00:00
..
abi
alias3.dir
asmhdr.dir
chan
closure3.dir cmd/compile: allow more inlining of functions that construct closures 2023-05-05 21:04:48 +00:00
closure5.dir
codegen cmd/compile: update rules to generate more prefixed instructions 2023-05-15 18:20:54 +00:00
ddd2.dir
dwarf
fixedbugs cmd/compile: un-hide closure func if parent expr moved to staticinit 2023-05-05 21:04:38 +00:00
import2.dir
import4.dir
interface go/types, types2: more systematic use of Checker.use und useLHS 2023-03-28 14:28:33 +00:00
intrinsic.dir
ken
linkname.dir
method4.dir
retjmp.dir
runtime
stress
syntax
typeparam test: test for issue 53087 2023-03-08 16:23:09 +00:00
uintptrescapes.dir
64bit.go
235.go
alg.go
alias.go
alias1.go
alias2.go
alias3.go
align.go
append.go
append1.go
args.go
armimm.go
asmhdr.go
assign.go
assign1.go
atomicload.go
bigalg.go
bigmap.go
blank.go
blank1.go
bom.go
bombad.go
bounds.go
cannotassign.go
chancap.go
chanlinear.go
char_lit.go
char_lit1.go
checkbce.go
clear.go cmd/compile: add clear(x) builtin 2023-01-31 19:43:07 +00:00
clearfat.go
closedchan.go
closure.go
closure1.go
closure2.go cmd/compile: experimental loop iterator capture semantics change 2023-03-06 18:34:24 +00:00
closure3.go
closure4.go
closure5.go
closure6.go
closure7.go
cmp.go
cmp6.go
cmplx.go
cmplxdivide.c
cmplxdivide.go
cmplxdivide1.go
complit.go
complit1.go
compos.go
const.go
const1.go
const2.go
const3.go
const4.go
const5.go
const6.go
const7.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
const8.go
convert.go
convert1.go
convert2.go
convert3.go
convert4.go
convinline.go cmd/compile: handle integer conversions in static init inliner 2022-11-17 13:46:05 +00:00
convlit.go
convlit1.go
convT2X.go
copy.go
copy1.go
crlf.go
ddd.go
ddd1.go
ddd2.go
decl.go
declbad.go
defer.go
defererrcheck.go
deferfin.go
defernil.go
deferprint.go
deferprint.out
devirt.go
directive.go
directive2.go
divide.go
divmod.go
embedfunc.go
embedvers.go
empty.go
env.go test,internal/testdir: don't set GOOS/GOARCH 2023-05-12 12:34:59 +00:00
eof.go
eof1.go
escape.go cmd/compile: experimental loop iterator capture semantics change 2023-03-06 18:34:24 +00:00
escape2.go
escape2n.go
escape3.go
escape4.go test: enable inlining tests for functions with local type 2023-01-31 20:36:55 +00:00
escape5.go
escape_array.go
escape_calls.go
escape_closure.go
escape_field.go
escape_goto.go
escape_hash_maphash.go
escape_iface.go
escape_iface_unified.go cmd: remove GOEXPERIMENT=nounified knob 2023-01-25 21:16:32 +00:00
escape_indir.go
escape_level.go
escape_map.go
escape_param.go
escape_reflect.go test: add escape test for reflect.Value operations 2023-05-12 23:13:19 +00:00
escape_runtime_atomic.go
escape_selfassign.go
escape_slice.go
escape_struct_param1.go
escape_struct_param2.go
escape_struct_return.go
escape_sync_atomic.go
escape_unsafe.go
fibo.go
finprofiled.go
float_lit.go
float_lit2.go
float_lit3.go
floatcmp.go
for.go
func.go
func1.go
func2.go
func3.go
func4.go
func5.go
func6.go
func7.go
func8.go
funcdup.go
funcdup2.go
fuse.go
gc.go
gc1.go
gc2.go
gcgort.go
gcstring.go
goprint.go
goprint.out
goto.go
heapsampling.go
helloworld.go
helloworld.out
if.go
import.go
import1.go
import2.go
import4.go
import5.go
import6.go
index.go
index0.go
index1.go
index2.go
indirect.go
indirect1.go
init.go
init1.go
initcomma.go
initexp.go
initialize.go cmd/compile: handle simple inlined calls in staticinit 2022-11-16 04:04:52 +00:00
initializerr.go
initloop.go
inline.go cmd/compile: better code generation for constant-fold switch 2023-04-14 17:58:01 +00:00
inline_big.go cmd/compile: flag 'large' functions when -m=2+ in effect 2023-01-24 13:28:54 +00:00
inline_caller.go
inline_callers.go
inline_endian.go
inline_literal.go
inline_math_bits_rotate.go
inline_sync.go reflect: do not escape Value.Type 2023-05-12 21:11:51 +00:00
inline_unified.go cmd: remove GOEXPERIMENT=nounified knob 2023-01-25 21:16:32 +00:00
inline_variadic.go
int_lit.go
intcvt.go
intrinsic.go
intrinsic_atomic.go
iota.go
label.go
label1.go
linkmain.go
linkmain_run.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
linkname.go
linkname3.go
linkobj.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
linkx.go
linkx_run.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
literal.go
literal2.go
live.go cmd/compile: sort liveness variable reports 2023-01-21 21:08:00 +00:00
live1.go
live2.go
live_regabi.go test: test that we schedule OpArgIntReg early 2023-01-21 21:08:30 +00:00
live_uintptrkeepalive.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
loopbce.go cmd/compile: make loopbce handle 8, 16 and 32 bit induction variables 2023-01-23 18:10:40 +00:00
mainsig.go
makechan.go
makemap.go
makenew.go
makeslice.go
mallocfin.go
map.go
map1.go
mapclear.go
maplinear.go
maymorestack.go
mergemul.go
method.go
method1.go
method2.go
method3.go
method4.go
method5.go
method6.go
method7.go
named.go
named1.go
nil.go
nilcheck.go
nilptr.go
nilptr2.go
nilptr3.go cmd/compile: casts from slices to array pointers are known to be non-nil 2023-03-29 21:55:11 +00:00
nilptr4.go
nilptr5.go
nilptr5_aix.go
nilptr5_wasm.go
nilptr_aix.go
noinit.go cmd/compile: reenable inline static init 2023-04-14 17:57:36 +00:00
nosplit.go runtime, cmd: rationalize StackLimit and StackGuard 2023-04-21 19:28:56 +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: teach prove about bitwise OR operation 2023-04-10 17:13:41 +00:00
prove_constant_folding.go
range.go
README.md internal/testdir: move to cmd/internal/testdir 2023-05-12 17:18:08 +00:00
recover.go
recover1.go
recover2.go
recover3.go
recover4.go
recover5.go
reflectmethod1.go
reflectmethod2.go
reflectmethod3.go
reflectmethod4.go
reflectmethod5.go
reflectmethod6.go
reflectmethod7.go
reflectmethod8.go
rename.go
rename1.go cmd/compile/internal/types2: only mark variables as used if they are 2023-04-19 14:07:00 +00:00
reorder.go
reorder2.go
retjmp.go
return.go
rotate.go
rotate0.go
rotate1.go
rotate2.go
rotate3.go
rune.go
runtime.go
shift1.go
shift2.go
shift3.go
sieve.go
sigchld.go all: add wasip1 support 2023-04-11 20:56:32 +00:00
sigchld.out
simassign.go
sizeof.go
slice3.go
slice3err.go
slicecap.go
sliceopt.go
solitaire.go
stack.go
stackobj.go
stackobj2.go
stackobj3.go
strcopy.go
strength.go
string_lit.go
stringrange.go
struct0.go
switch.go
switch2.go
switch3.go
switch4.go
switch5.go
switch6.go
switch7.go
tinyfin.go
torture.go
turing.go
typecheck.go
typecheckloop.go
typeswitch.go
typeswitch1.go
typeswitch2.go
typeswitch2b.go
typeswitch3.go
uintptrescapes.go
uintptrescapes2.go
uintptrescapes3.go
uintptrkeepalive.go
undef.go
unsafe_slice_data.go
unsafe_string.go
unsafe_string_data.go
unsafebuiltins.go
used.go
utf.go
varerr.go
varinit.go
winbatch.go
writebarrier.go
zerodivide.go
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.