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Paul E. Murphy c3c6fbf314 cmd/compile: combine more 32 bit shift and mask operations on ppc64 
Combine (AND m (SRWconst x)) or (SRWconst (AND m x)) when mask m is
and the shift value produce constant which can be encoded into an
RLWINM instruction.

Combine (CLRLSLDI (SRWconst x)) if the combining of the underling rotate
masks produces a constant which can be encoded into RLWINM.

Likewise for (SLDconst (SRWconst x)) and (CLRLSDI (RLWINM x)).

Combine rotate word + and operations which can be encoded as a single
RLWINM/RLWNM instruction.

The most notable performance improvements arise from the crypto
benchmarks below (GOARCH=power8 on a ppc64le/linux):

pkg:golang.org/x/crypto/blowfish goos:linux goarch:ppc64le
ExpandKeyWithSalt                               52.2µs ± 0%    47.5µs ± 0%  -8.88%
ExpandKey                                       44.4µs ± 0%    40.3µs ± 0%  -9.15%

pkg:golang.org/x/crypto/ssh/internal/bcrypt_pbkdf goos:linux goarch:ppc64le
Key                                             57.6ms ± 0%    52.3ms ± 0%  -9.13%

pkg:golang.org/x/crypto/bcrypt goos:linux goarch:ppc64le
Equal                                           90.9ms ± 0%    82.6ms ± 0%  -9.13%
DefaultCost                                     91.0ms ± 0%    82.7ms ± 0%  -9.12%

Change-Id: I59a0ca29face38f4ab46e37124c32906f216c4ce
Reviewed-on: https://go-review.googlesource.com/c/go/+/260798
Run-TryBot: Carlos Eduardo Seo <carlos.seo@linaro.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Carlos Eduardo Seo <carlos.seo@linaro.com>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
2020-10-27 18:33:20 +00:00
..
alias3.dir
bench
chan test/chan: fix trivial typos 2020-03-25 22:22:20 +00:00
closure3.dir cmd/compile: allow inlining of "for" loops 2020-10-15 18:26:33 +00:00
codegen cmd/compile: combine more 32 bit shift and mask operations on ppc64 2020-10-27 18:33:20 +00:00
ddd2.dir
dwarf
fixedbugs cmd/internal/obj: reject too large symbols 2020-10-20 18:51:03 +00:00
import2.dir
import4.dir
interface
intrinsic.dir
ken
linkname.dir
method4.dir
oldescape_linkname.dir
retjmp.dir
runtime
stress
syntax cmd/compile/internal/syntax: better error when an assignment is used in value context 2020-02-21 22:57:52 +00:00
uintptrescapes.dir
64bit.go
235.go
alg.go
alias1.go
alias2.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
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 test, test/fixedbugs, crypto/x509, go/internal/gccgoimporter: fix typos 2020-03-29 17:12:56 +00:00
blank.go
bom.go
bombad.go
bounds.go cmd/compile: defer lowering OANDNOT until SSA 2020-10-27 03:11:45 +00:00
cannotassign.go cmd/compile: be more specific in cannot assign errors 2020-09-16 20:04:58 +00:00
chancap.go
chanlinear.go test, test/fixedbugs, crypto/x509, go/internal/gccgoimporter: fix typos 2020-03-29 17:12:56 +00:00
char_lit1.go
char_lit.go
checkbce.go
clearfat.go
closedchan.go
closure1.go
closure2.go
closure3.go
closure4.go
closure.go
cmp6.go
cmp.go
cmplx.go
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
copy.go
crlf.go
ddd1.go cmd/compile: don't report not enough args error if call is undefined 2020-09-12 08:50:45 +00:00
ddd2.go
ddd.go
decl.go
declbad.go
defer.go
defererrcheck.go test: re-enable open-coded defer test on riscv64 2020-02-26 16:54:17 +00:00
deferfin.go
defernil.go
deferprint.go
deferprint.out
devirt.go cmd/compile: debug rewrite 2020-04-13 21:56:15 +00:00
directive.go cmd/compile: reject misplaced go:build comments 2020-10-13 01:16:45 +00:00
divide.go
divmod.go
empty.go
env.go
eof1.go
eof.go
escape2.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape2n.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape3.go
escape4.go
escape5.go cmd/compile: add failing test case for #24305 2020-08-15 03:09:52 +00:00
escape_array.go
escape_calls.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_closure.go cmd/compile: improve escape analysis of known calls 2020-10-15 18:26:06 +00:00
escape_field.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_goto.go
escape_hash_maphash.go
escape_iface.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_indir.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_level.go
escape_map.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_param.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_runtime_atomic.go
escape_selfassign.go
escape_slice.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_struct_param1.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_struct_param2.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
escape_struct_return.go
escape_sync_atomic.go
escape_unsafe.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
initempty.go
initialize.go
initializerr.go
initloop.go
inline_big.go cmd/compile: output cost while inlining function with Debug['m'] > 1 2020-02-26 14:44:24 +00:00
inline_caller.go
inline_callers.go
inline_literal.go
inline_math_bits_rotate.go
inline_sync.go test: re-enable atomic intrinsic related tests on riscv64 2020-03-25 01:11:15 +00:00
inline_variadic.go cmd/compile: use clearer error message for stuct literal 2020-09-12 08:31:49 +00:00
inline.go cmd/compile: allowing inlining of functions with OCALLPART 2020-10-20 00:07:42 +00:00
int_lit.go
intcvt.go
intrinsic_atomic.go test: re-enable atomic intrinsic related tests on riscv64 2020-03-25 01:11:15 +00:00
intrinsic.go
iota.go
label1.go
label.go
linkmain_run.go
linkmain.go
linkname.go
linkobj.go
linkx_run.go
linkx.go
literal2.go
literal.go
live1.go
live2.go
live_syscall.go
live.go cmd/compile,cmd/link: fix and re-enable open-coded defers on riscv64 2020-01-29 16:34:44 +00:00
locklinear.go
loopbce.go
makechan.go test: remove duplicate code from makechan/makemap 2020-04-19 07:51:23 +00:00
makemap.go test: remove duplicate code from makechan/makemap 2020-04-19 07:51:23 +00:00
makenew.go
makeslice.go cmd/compile: optimize make+copy pattern to avoid memclr 2020-05-07 17:50:24 +00:00
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
nilptr4.go
nilptr5_aix.go
nilptr5_wasm.go
nilptr5.go
nilptr_aix.go
nilptr.go cmd/dist: enable more tests on macOS/ARM64 2020-10-06 21:55:49 +00:00
nosplit.go runtime: static lock ranking for the runtime (enabled by GOEXPERIMENT) 2020-04-07 21:51:03 +00:00
notinheap2.go cmd/compile: propagate go:notinheap implicitly 2020-09-17 19:35:53 +00:00
notinheap3.go
notinheap.go cmd/compile: propagate go:notinheap implicitly 2020-09-17 19:35:53 +00:00
nowritebarrier.go cmd/compile: allow mid-stack inlining when there is a cycle of recursion 2020-04-03 21:43:52 +00:00
nul1.go
opt_branchlikely.go
parentype.go
peano.go
phiopt.go
print.go
print.out
printbig.go
printbig.out
prove.go cmd/compile: don't addLocalInductiveFacts if there is no direct edge from if block to phi block 2020-07-30 17:23:11 +00:00
range.go
README.md test: document specifying individual test files as operands 2020-08-28 21:23:32 +00:00
recover1.go
recover2.go
recover3.go
recover4.go
recover5.go
recover.go
reflectmethod1.go
reflectmethod2.go
reflectmethod3.go
reflectmethod4.go
reflectmethod5.go cmd/compile: when marking REFLECTMETHOD, check for reflect package itself 2020-04-19 03:12:32 +00:00
reflectmethod6.go cmd/compile: when marking REFLECTMETHOD, check for reflect package itself 2020-04-19 03:12:32 +00:00
rename1.go
rename.go
reorder2.go
reorder.go
retjmp.go
return.go
rotate0.go
rotate1.go
rotate2.go
rotate3.go
rotate.go
run.go all: implement GO386=softfloat 2020-10-06 22:49:38 +00:00
rune.go
runtime.go cmd/compile: report error for unexported name only once 2020-08-25 16:06:36 +00:00
shift1.go
shift2.go
sieve.go
sigchld.go
sigchld.out
simassign.go
sinit_run.go
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
switch7.go
switch.go
tinyfin.go
torture.go
turing.go
typecheck.go test: add copyright notice to typecheck.go 2020-04-17 13:30:49 +00:00
typecheckloop.go
typeswitch1.go
typeswitch2.go
typeswitch2b.go
typeswitch3.go
typeswitch.go
uintptrescapes2.go
uintptrescapes3.go
uintptrescapes.go
undef.go
utf.go
varerr.go
varinit.go
winbatch.go all: treat all files as binary, but check in .bat with CRLF 2020-06-08 15:31:43 +00:00
writebarrier.go cmd/compile: improve generated code for concrete cases in type switches 2020-04-14 17:34:31 +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

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.