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Lynn Boger 815509ae31 cmd/compile: improve lowered moves and zeros for ppc64le 
This change includes the following:
- Generate LXV/STXV sequences instead of LXVD2X/STXVD2X on power9.
These instructions do not require an index register, which
allows more loads and stores within a loop without initializing
multiple index registers. The LoweredQuadXXX generate LXV/STXV.
- Create LoweredMoveXXXShort and LoweredZeroXXXShort for short
moves that don't generate loops, and therefore don't clobber the
address registers or flags.
- Use registers other than R3 and R4 to avoid conflicting with
registers that have already been allocated to avoid unnecessary
register moves.
- Eliminate the use of R14 as scratch register and use R31
instead.
- Add PCALIGN when the LoweredMoveXXX or LoweredZeroXXX generates a
loop with more than 3 iterations.

This performance opportunity was noticed in github.com/golang/snappy
benchmarks. Results on power9:

WordsDecode1e1    54.1ns ± 0%    53.8ns ± 0%   -0.51%  (p=0.029 n=4+4)
WordsDecode1e2     287ns ± 0%     282ns ± 1%   -1.83%  (p=0.029 n=4+4)
WordsDecode1e3    3.98µs ± 0%    3.64µs ± 0%   -8.52%  (p=0.029 n=4+4)
WordsDecode1e4    66.9µs ± 0%    67.0µs ± 0%   +0.20%  (p=0.029 n=4+4)
WordsDecode1e5     723µs ± 0%     723µs ± 0%   -0.01%  (p=0.200 n=4+4)
WordsDecode1e6    7.21ms ± 0%    7.21ms ± 0%   -0.02%  (p=1.000 n=4+4)
WordsEncode1e1    29.9ns ± 0%    29.4ns ± 0%   -1.51%  (p=0.029 n=4+4)
WordsEncode1e2    2.12µs ± 0%    1.75µs ± 0%  -17.70%  (p=0.029 n=4+4)
WordsEncode1e3    11.7µs ± 0%    11.2µs ± 0%   -4.61%  (p=0.029 n=4+4)
WordsEncode1e4     119µs ± 0%     120µs ± 0%   +0.36%  (p=0.029 n=4+4)
WordsEncode1e5    1.21ms ± 0%    1.22ms ± 0%   +0.41%  (p=0.029 n=4+4)
WordsEncode1e6    12.0ms ± 0%    12.0ms ± 0%   +0.57%  (p=0.029 n=4+4)
RandomEncode       286µs ± 0%     203µs ± 0%  -28.82%  (p=0.029 n=4+4)
ExtendMatch       47.4µs ± 0%    47.0µs ± 0%   -0.85%  (p=0.029 n=4+4)

Change-Id: Iecad3a39ae55280286e42760a5c9d5c1168f5858
Reviewed-on: https://go-review.googlesource.com/c/go/+/226539
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
2020-04-06 12:09:39 +00:00
..
alias3.dir
[dev.typealias] cmd/compile: export/import test cases for type aliases
2017-01-20 05:55:53 +00:00
bench
test/bench/go1: add go.mod file
2019-03-06 18:53:12 +00:00
chan
test/chan: fix trivial typos
2020-03-25 22:22:20 +00:00
closure3.dir
cmd/compile: skip escape analysis diagnostics for OADDR
2019-04-02 16:34:03 +00:00
codegen
cmd/compile: improve lowered moves and zeros for ppc64le
2020-04-06 12:09:39 +00:00
ddd2.dir
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
dwarf
test: make rundir match compiledir/errorcheckdir.
2013-01-11 22:00:48 +01:00
fixedbugs
cmd/compile: don't inline reflect.Value.UnsafeAddr/Pointer if enable checkptr
2020-04-01 06:12:05 +00:00
import2.dir
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
import4.dir
test: adjust gccgo expected import errors
2015-10-07 14:37:44 +00:00
interface
test: add tests for runtime.itab.init
2019-11-06 09:09:59 +00:00
intrinsic.dir
cmd/compile: intrinsics for math/bits.TrailingZerosX
2017-03-16 02:44:16 +00:00
ken
all: fix typos
2019-09-08 17:28:20 +00:00
linkname.dir
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
method4.dir
cmd/gc: do not omit wrapper for expression (interface{...}).F
2014-01-07 13:26:48 +01:00
oldescape_linkname.dir
cmd/compile: update escape analysis tests for newescape
2019-04-16 16:20:39 +00:00
retjmp.dir
cmd/asm: fix assembling return jump
2018-03-01 21:11:16 +00:00
runtime
test: remove -newescape from regress tests
2019-08-28 19:27:20 +00:00
stress
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
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
cmd/compile, syscall: add //go:uintptrescapes comment, and use it
2016-07-06 20:48:41 +00:00
64bit.go
cmd/gc: Error out on division by constant zero.
2013-01-30 20:21:08 +01:00
235.go
…
alg.go
test: add test that required algs get generated
2016-04-24 21:36:52 +00:00
alias1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
alias2.go
cmd/compile: cleanup method symbol creation
2018-04-05 22:01:17 +00:00
alias3.go
[dev.typealias] cmd/compile: export/import test cases for type aliases
2017-01-20 05:55:53 +00:00
alias.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
align.go
test: check that unaligned load-add opcodes work.
2018-04-09 18:57:37 +00:00
append1.go
cmd/compile: optimize append(x, make([]T, y)...) slice extension
2018-05-06 04:28:23 +00:00
append.go
cmd/compile: optimize append(x, make([]T, y)...) slice extension
2018-05-06 04:28:23 +00:00
args.go
…
armimm.go
cmd/internal/obj: continue to optimize ARM's constant pool
2017-05-11 13:53:54 +00:00
assign1.go
…
assign.go
cmd/gc: prohibit short variable declarations containing duplicate symbols
2014-10-06 17:16:39 -04:00
atomicload.go
cmd/compile: keep value use counts in SSA
2016-03-17 04:20:02 +00:00
bigalg.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
bigmap.go
…
blank1.go
test, test/fixedbugs, crypto/x509, go/internal/gccgoimporter: fix typos
2020-03-29 17:12:56 +00:00
blank.go
test: revert changes made for Go SSA interpreter test.
2013-10-08 14:36:20 -04:00
bom.go
…
bombad.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
bounds.go
test: gofmt bounds.go
2018-05-29 02:39:16 +00:00
chancap.go
runtime: handle 64bits addresses for AIX
2018-11-26 14:06:28 +00:00
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
cmd/compile: fix ordering for short-circuiting ops
2019-03-06 20:04:07 +00:00
clearfat.go
[dev.power64] 9g: fix under-zeroing in clearfat
2014-10-31 11:08:27 -04:00
closedchan.go
…
closure1.go
cmd/gc: capture variables by value
2015-01-29 13:07:30 +00:00
closure2.go
all: fix typos
2019-09-08 17:28:20 +00:00
closure3.go
all: fix a bunch of misspellings
2018-10-06 15:40:03 +00:00
closure4.go
cmd/compile/internal/gc: add nil check for closure call on wasm
2018-08-14 09:19:38 +00:00
closure.go
…
cmp6.go
cmd/gc: do not consider length zero arrays as comparable.
2014-01-31 00:30:56 +01:00
cmp.go
Fix several out of date references to 4g/5g/6g/8g/9g.
2015-06-26 03:38:21 +00:00
cmplx.go
cmd/compile: rewrite f(g()) for multi-value g() during typecheck
2019-03-14 21:00:20 +00:00
cmplxdivide1.go
runtime: make complex division c99 compatible
2017-03-15 22:45:17 +00:00
cmplxdivide.c
runtime: make complex division c99 compatible
2017-03-15 22:45:17 +00:00
cmplxdivide.go
runtime: make complex division c99 compatible
2017-03-15 22:45:17 +00:00
complit1.go
cmd/compile: simplify OPTRLIT handling
2019-09-26 18:45:53 +00:00
complit.go
…
compos.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
const1.go
cmd/compile: fix ICE from invalid operations on float/complex constants
2019-03-28 17:46:55 +00:00
const2.go
…
const3.go
…
const4.go
all: link to https instead of http
2015-07-11 14:36:33 +00:00
const5.go
all: link to https instead of http
2015-07-11 14:36:33 +00:00
const6.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
const.go
cmd/compile: apply constant folding to ORUNESTR
2019-09-26 23:54:29 +00:00
convert1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
convert2.go
cmd/compile: ignore struct tags when converting structs
2016-10-04 17:10:47 +00:00
convert3.go
…
convert.go
…
convlit1.go
…
convlit.go
cmd/compile: rewrite untyped constant conversion logic
2019-09-06 23:15:48 +00:00
convT2X.go
…
copy1.go
cmd/compile: rewrite f(g()) for multi-value g() during typecheck
2019-03-14 21:00:20 +00:00
copy.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
crlf.go
…
ddd1.go
cmd/compile: rewrite untyped constant conversion logic
2019-09-06 23:15:48 +00:00
ddd2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
ddd.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
decl.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
declbad.go
…
defer.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
defererrcheck.go
test: re-enable open-coded defer test on riscv64
2020-02-26 16:54:17 +00:00
deferfin.go
runtime: combine small NoScan allocations
2014-01-24 22:35:11 +04:00
defernil.go
cmd/compile: on Wasm and AIX, let deferred nil function panic at invocation
2019-10-16 00:05:37 +00:00
deferprint.go
test: remove rundircmpout and cmpout actions
2018-05-31 17:36:45 +00:00
deferprint.out
…
devirt.go
cmd/compile: de-virtualize interface calls
2017-03-14 18:49:23 +00:00
divide.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
divmod.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
empty.go
…
env.go
…
eof1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
eof.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
escape2.go
test: add regress test for #27557
2019-09-25 17:06:15 +00:00
escape2n.go
test: add regress test for #27557
2019-09-25 17:06:15 +00:00
escape3.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
escape4.go
cmd/compile: skip escape analysis diagnostics for OADDR
2019-04-02 16:34:03 +00:00
escape5.go
cmd/compile: silence esc diagnostics about directiface OCONVIFACEs
2019-09-03 17:52:06 +00:00
escape_array.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_calls.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_closure.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_field.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_goto.go
cmd/compile: preserve loop depth when evaluating block
2019-09-06 01:35:46 +00:00
escape_hash_maphash.go
hash/maphash: mark call into runtime hash function as not escaping
2019-11-16 20:31:45 +00:00
escape_iface.go
cmd/compile: use underlying OCOMPLIT's position for OPTRLIT
2019-09-25 17:07:09 +00:00
escape_indir.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_level.go
cmd/compile: silence esc diagnostics about directiface OCONVIFACEs
2019-09-03 17:52:06 +00:00
escape_map.go
cmd/compile: silence esc diagnostics about directiface OCONVIFACEs
2019-09-03 17:52:06 +00:00
escape_param.go
cmd/compile: reimplement parameter leak encoding
2019-10-07 18:50:14 +00:00
escape_runtime_atomic.go
test: fix escape_runtime_atomic.go
2019-04-17 22:55:26 +00:00
escape_selfassign.go
test: add regress test cases for self-assignment
2019-04-17 16:36:56 +00:00
escape_slice.go
cmd/compile: make isSmallMakeSlice checks slice cap only
2020-03-31 21:51:51 +00:00
escape_struct_param1.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_struct_param2.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
escape_struct_return.go
test: remove -newescape from regress tests
2019-08-28 19:27:20 +00:00
escape_sync_atomic.go
runtime/internal/atomic: remove bad go:noescape annotations on Loadp
2019-04-17 19:09:15 +00:00
escape_unsafe.go
cmd/compile: silence esc diagnostics about directiface OCONVIFACEs
2019-09-03 17:52:06 +00:00
escape.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
fibo.go
Fix whitespace (use blanks consistently).
2014-12-08 22:22:58 +00:00
finprofiled.go
all: fix typos
2019-09-08 17:28:20 +00:00
float_lit2.go
test/float_lit2: fix expressions in comment
2016-09-14 16:39:47 +00:00
float_lit3.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
float_lit.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
floatcmp.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
for.go
…
func1.go
cmd/gc: ensure unique parameter and result names in function types
2013-03-15 15:24:13 -04:00
func2.go
…
func3.go
…
func4.go
…
func5.go
…
func6.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
func7.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
func8.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
func.go
…
funcdup2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
funcdup.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
gc1.go
…
gc2.go
all: skip unsupported tests for js/wasm
2018-04-30 19:39:18 +00:00
gc.go
…
gcgort.go
test: fast GC+concurrency+types verification
2018-05-08 21:15:48 +00:00
gcstring.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
goprint.go
test: adjust a test to work with js/wasm's background goroutine
2019-10-10 19:38:06 +00:00
goprint.out
…
goto.go
cmd/compile: report block start for gotos jumping into blocks
2017-04-19 02:27:58 +00:00
heapsampling.go
test: improve test coverage for heap sampling
2019-03-07 21:05:15 +00:00
helloworld.go
test: remove rundircmpout and cmpout actions
2018-05-31 17:36:45 +00:00
helloworld.out
…
if.go
…
import1.go
test: match gccgo import error messages
2013-12-12 19:02:11 -08:00
import2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
import4.go
…
import5.go
cmd/compile: be slightly more tolerant in case of certain syntax errors
2017-03-24 20:07:15 +00:00
import6.go
cmd/compile/internal/syntax: removed gcCompat code needed to pass orig. tests
2017-02-10 01:22:30 +00:00
import.go
…
index0.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
index1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
index2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
index.go
all: fix typos
2019-09-08 17:28:20 +00:00
indirect1.go
…
indirect.go
…
init1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
init.go
cmd/compile: reorganize init functions
2019-03-18 20:10:55 +00:00
initcomma.go
…
initempty.go
cmd/compile: add test for skipping empty init functions
2019-11-04 20:19:15 +00:00
initialize.go
…
initializerr.go
cmd/compile: more error position tests for the typechecker
2017-04-24 12:37:49 +00:00
initloop.go
cmd/compile: use []*Node instead of NodeList in sinit
2015-09-05 02:25:01 +00:00
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
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
cmd/compile: copy literals when inlining
2017-03-03 21:29:32 +00:00
inline_math_bits_rotate.go
cmd/compile: make math/bits.RotateLeft* an intrinsic on amd64
2018-08-30 22:48:28 +00:00
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: enable inlining variadic functions
2018-03-13 20:34:03 +00:00
inline.go
cmd/compile: allow mid-stack inlining when there is a cycle of recursion
2020-04-03 21:43:52 +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
cmd/compile: intrinsify Ctz{32,64} and Bswap{32,64} on s390x
2016-09-19 19:03:01 +00:00
iota.go
…
label1.go
cmd/compile/internal/gc: don't panic on continue in switch
2017-04-12 14:27:45 +00:00
label.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
linkmain_run.go
test: avoid writing temporary files to GOROOT
2019-11-18 14:40:07 +00:00
linkmain.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
linkname.go
test: remove -newescape from regress tests
2019-08-28 19:27:20 +00:00
linkobj.go
all: skip unsupported tests for js/wasm
2018-04-30 19:39:18 +00:00
linkx_run.go
cmd/compile: don't statically copy string-typed variables
2019-10-03 18:08:32 +00:00
linkx.go
[dev.link] all: clean up some TODOs
2019-11-01 20:13:05 +00:00
literal2.go
cmd/compile: accept 'i' suffix orthogonally on all numbers
2019-02-19 22:45:09 +00:00
literal.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
live1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
live2.go
cmd/compile: extend ssa.go to handle 1-element array and 1-field struct
2019-09-03 19:33:04 +00:00
live_syscall.go
cmd/compile: trim function name prefix from escape diagnostics
2019-09-16 15:30:51 +00:00
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
test: skip locklinear's lockmany test for now
2018-04-05 10:53:40 +00:00
loopbce.go
cmd/compile: detect indvars that are bound by other indvars
2019-09-26 18:47:12 +00:00
makechan.go
cmd/compile: generate makechan calls with int arguments
2017-08-15 05:54:24 +00:00
makemap.go
test: check that size argument errors are emitted at call site
2018-03-14 08:36:15 +00:00
makenew.go
cmd/compile: more error position tests for the typechecker
2017-04-24 12:37:49 +00:00
mallocfin.go
…
map1.go
cmd/compile: more error position tests for the typechecker
2017-04-24 12:37:49 +00:00
map.go
test/mapnan.go: add regression test for non-empty interfaces.
2014-08-06 17:02:55 -04:00
mapclear.go
cmd/compile: optimize map-clearing range idiom
2018-05-08 21:15:16 +00:00
maplinear.go
test: make maplinear more robust
2014-10-27 18:59:02 -04:00
mergemul.go
cmd/compile: combine x*n - y*n into (x-y)*n
2017-09-03 14:29:38 +00:00
method1.go
cmd/compile: ignore receiver parameters in Eqtype
2016-03-17 00:38:15 +00:00
method2.go
cmd/compile: add two error position tests for the typechecker
2017-10-12 20:50:20 +00:00
method3.go
…
method4.go
…
method5.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
method6.go
cmd/compile: add two error position tests for the typechecker
2017-10-12 20:50:20 +00:00
method7.go
cmd/compile: fix method expressions with anonymous receivers
2018-04-06 15:39:11 +00:00
method.go
test: a number of fixes.
2013-02-11 18:20:52 -05:00
named1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
named.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
nil.go
test: ensure all failing tests exit nonzero.
2013-02-12 13:17:49 -05:00
nilcheck.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
nilptr2.go
test: use a real use function in nilptr2.go
2019-05-11 03:02:33 +00:00
nilptr3.go
cmd/compile: fix nilcheck for AIX
2018-11-26 14:13:53 +00:00
nilptr4.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
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: adjust tests for riscv64
2020-01-25 16:30:26 +00:00
notinheap2.go
cmd/compile: add go:notinheap type pragma
2016-10-15 17:58:14 +00:00
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
cmd/compile: allow mid-stack inlining when there is a cycle of recursion
2020-04-03 21:43:52 +00:00
nul1.go
cmd/compile/internal/gc: enable new parser by default
2016-10-25 22:28:40 +00:00
opt_branchlikely.go
all: fix typos
2019-09-08 17:28:20 +00:00
parentype.go
…
peano.go
all: skip unsupported tests for js/wasm
2018-04-30 19:39:18 +00:00
phiopt.go
test: re-enable phi optimization test
2016-09-13 20:06:13 +00:00
print.go
test: remove rundircmpout and cmpout actions
2018-05-31 17:36:45 +00:00
print.out
cmd/compile: fix print/println when input is uint
2017-09-26 04:08:38 +00:00
printbig.go
test: remove rundircmpout and cmpout actions
2018-05-31 17:36:45 +00:00
printbig.out
…
prove.go
cmd/compile: remove Greater* and Geq* generic integer ops
2020-02-26 13:11:53 +00:00
range.go
cmd/compile: improve single blank variable handling in walkrange
2017-09-12 05:50:54 +00:00
README.md
test: use the version of Go used to run run.go
2018-03-03 19:52:00 +00:00
recover1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
recover2.go
cmd/compile,runtime: generate hash functions only for types which are map keys
2019-09-03 20:41:29 +00:00
recover3.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
recover4.go
all: use Fatalf instead of Fatal if format is given
2018-01-10 01:35:45 +00:00
recover5.go
cmd/compile: more error position tests for the typechecker
2017-04-24 12:37:49 +00:00
recover.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
reflectmethod1.go
cmd/compile: track reflect.Type.Method in deadcode
2016-03-11 21:19:20 +00:00
reflectmethod2.go
cmd/compile: track reflect.Type.Method in deadcode
2016-03-11 21:19:20 +00:00
reflectmethod3.go
cmd/compile: track reflect.Type.Method in deadcode
2016-03-11 21:19:20 +00:00
reflectmethod4.go
cmd/link: treat reflect.Value.Method like Call
2016-03-11 22:07:02 +00:00
rename1.go
cmd/compile: rewrite untyped constant conversion logic
2019-09-06 23:15:48 +00:00
rename.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
reorder2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
reorder.go
cmd/compile: Ensure left-to-right assignment
2017-02-11 21:46:21 +00:00
retjmp.go
cmd/asm: fix assembling return jump
2018-03-01 21:11:16 +00:00
return.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
rotate0.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
rotate1.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
rotate2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
rotate3.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
rotate.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
run.go
test: make runindir tests pass regardless of whether module mode is in use
2020-03-25 14:19:25 +00:00
rune.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
runtime.go
cmd/compile/internal/gc: separate builtin and real runtime packages
2017-03-01 01:06:32 +00:00
shift1.go
cmd/compile: rewrite untyped constant conversion logic
2019-09-06 23:15:48 +00:00
shift2.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
sieve.go
…
sigchld.go
test: remove rundircmpout and cmpout actions
2018-05-31 17:36:45 +00:00
sigchld.out
…
simassign.go
…
sinit_run.go
test: avoid writing temporary files to GOROOT
2019-11-18 14:40:07 +00:00
sinit.go
cmd/compile: fix static initializer
2018-12-03 16:48:21 +00:00
sizeof.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
slice3.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
slice3err.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
slicecap.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
sliceopt.go
cmd/compile: make prove pass use unsatisfiability
2018-03-08 22:25:25 +00:00
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
test: add test to verify that string copies don't get optimized away
2018-06-12 19:10:34 +00:00
strength.go
all: fix typos
2019-09-08 17:28:20 +00:00
string_lit.go
test: add []rune case to string_lit.go
2013-12-12 17:17:02 -08:00
stringrange.go
…
struct0.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
switch2.go
cmd/compile/internal/syntax: match old parser errors and line numbers
2016-08-19 01:10:21 +00:00
switch3.go
…
switch4.go
cmd/gc: disallow fallthrough in final case of switch
2013-03-15 00:35:09 -04:00
switch5.go
Revert "fmt: fix incorrect format of whole-number floats when using %#v"
2018-10-16 21:54:35 +00:00
switch6.go
cmd/compile: improve error for wrong type in switch
2017-02-02 17:36:43 +00:00
switch7.go
cmd/compile: make duplicate expr cases readable
2017-05-19 18:11:51 +00:00
switch.go
cmd/gc: disallow fallthrough in final case of switch
2013-03-15 00:35:09 -04:00
tinyfin.go
runtime: fix finalization and profiling of tiny allocations
2015-11-03 18:57:18 +00:00
torture.go
cmd/8g: don't allocate a register early for cap(CHAN).
2014-07-01 09:20:51 +02:00
turing.go
…
typecheck.go
cmd/gc: silence assignment errors to undefined symbols
2014-01-03 21:03:20 +01:00
typecheckloop.go
cmd/compile: convert typecheck_stack to []*Node
2015-09-06 23:50:51 +00:00
typeswitch1.go
…
typeswitch2.go
cmd/compile: move duplicate type-case checking into typecheck
2019-09-11 23:33:11 +00:00
typeswitch2b.go
cmd/compile/internal/gc: reword "declared and not used" error message
2019-10-28 23:34:13 +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: fix //go:uintptrescapes for basic method calls
2019-11-05 00:26:30 +00:00
uintptrescapes3.go
cmd/compile: fix //go:uintptrescapes for basic method calls
2019-11-05 00:26:30 +00:00
uintptrescapes.go
cmd/compile, syscall: add //go:uintptrescapes comment, and use it
2016-07-06 20:48:41 +00:00
undef.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
utf.go
…
varerr.go
all: make copyright headers consistent with one space after period
2016-05-02 13:43:18 +00:00
varinit.go
…
winbatch.go
build: force all Windows batch files to CRLF
2020-03-22 08:42:38 +00:00
writebarrier.go
cmd/compile: better write barrier removal when initializing new objects
2019-03-18 21:16:19 +00:00
zerodivide.go
test: lock in test for _ assignment evaluation/zerodivide panic
2016-12-23 17:35:24 +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

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.