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abi
alias3.dir
arenas
asmhdr.dir
chan
closure3.dir
closure5.dir
codegen
README
addrcalc.go
alloc.go
arithmetic.go
bitfield.go
bits.go
bmi.go
bool.go
clobberdead.go
clobberdeadreg.go
compare_and_branch.go
comparisons.go
condmove.go
constants.go
copy.go
floats.go
fuse.go
ifaces.go
issue22703.go
issue25378.go
issue31618.go
issue33580.go
issue38554.go
issue42610.go
issue48054.go
issue52635.go
issue54467.go
issue56440.go
issue58166.go
issue60324.go
issue60673.go
issue61356.go
issue63332.go
logic.go
mapaccess.go
maps.go
math.go
mathbits.go
memcombine.go
memops.go
memops_bigoffset.go
noextend.go
race.go
regabi_regalloc.go
retpoline.go
rotate.go
select.go
shift.go
shortcircuit.go
slices.go
smallintiface.go
spectre.go
stack.go
strings.go
structs.go
switch.go
writebarrier.go
zerosize.go
ddd2.dir
dwarf
fixedbugs
import2.dir
import4.dir
interface
intrinsic.dir
ken
linkname.dir
method4.dir
retjmp.dir
runtime
stress
syntax
typeparam
uintptrescapes.dir
235.go
64bit.go
README.md
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
clearfat.go
closedchan.go
closure.go
closure1.go
closure2.go
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
const8.go
convT2X.go
convert.go
convert1.go
convert2.go
convert3.go
convert4.go
convinline.go
convlit.go
convlit1.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
eof.go
eof1.go
escape.go
escape2.go
escape2n.go
escape3.go
escape4.go
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_indir.go
escape_level.go
escape_map.go
escape_mutations.go
escape_param.go
escape_reflect.go
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
initializerr.go
initloop.go
inline.go
inline_big.go
inline_caller.go
inline_callers.go
inline_endian.go
inline_literal.go
inline_math_bits_rotate.go
inline_sync.go
inline_variadic.go
int_lit.go
intcvt.go
intrinsic.go
intrinsic_atomic.go
iota.go
label.go
label1.go
linkmain.go
linkmain_run.go
linkname.go
linkname3.go
linkobj.go
linkx.go
linkx_run.go
literal.go
literal2.go
live.go
live1.go
live2.go
live_regabi.go
live_uintptrkeepalive.go
loopbce.go
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
newinline.go
nil.go
nilcheck.go
nilptr.go
nilptr2.go
nilptr3.go
nilptr4.go
nilptr5.go
nilptr5_aix.go
nilptr5_wasm.go
nilptr_aix.go
noinit.go
nosplit.go
nowritebarrier.go
nul1.go
opt_branchlikely.go
parentype.go
peano.go
phiopt.go
print.go
print.out
printbig.go
printbig.out
prove.go
prove_constant_folding.go
prove_invert_loop_with_unused_iterators.go
range.go
range2.go
range3.go
range4.go
rangegen.go
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
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
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
tighten.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
.gitattributes
.gitignore
CONTRIBUTING.md
LICENSE
PATENTS
README.md
SECURITY.md
VERSION
codereview.cfg
go.env
556e9c5f3e
This lets us combine more write barriers, getting rid of some of the test+branch and gcWriteBarrier* calls. With the new write barriers, it's easy to add a few non-pointer writes to the set of values written. We allow up to 2 non-pointer writes between pointer writes. This is enough for, for example, adjacent slice fields. Fixes #62126 Change-Id: I872d0fa9cc4eb855e270ffc0223b39fde1723c4b Reviewed-on: https://go-review.googlesource.com/c/go/+/521498 TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com> Reviewed-by: Keith Randall <khr@google.com>
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
// asmcheck
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// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package codegen
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func combine2string(p *[2]string, a, b string) {
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// amd64:`.*runtime[.]gcWriteBarrier4\(SB\)`
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// arm64:`.*runtime[.]gcWriteBarrier4\(SB\)`
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p[0] = a
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[1] = b
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}
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func combine4string(p *[4]string, a, b, c, d string) {
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// amd64:`.*runtime[.]gcWriteBarrier8\(SB\)`
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// arm64:`.*runtime[.]gcWriteBarrier8\(SB\)`
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p[0] = a
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[1] = b
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[2] = c
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[3] = d
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}
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func combine2slice(p *[2][]byte, a, b []byte) {
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// amd64:`.*runtime[.]gcWriteBarrier4\(SB\)`
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// arm64:`.*runtime[.]gcWriteBarrier4\(SB\)`
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p[0] = a
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[1] = b
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}
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func combine4slice(p *[4][]byte, a, b, c, d []byte) {
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// amd64:`.*runtime[.]gcWriteBarrier8\(SB\)`
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// arm64:`.*runtime[.]gcWriteBarrier8\(SB\)`
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p[0] = a
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[1] = b
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[2] = c
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// amd64:-`.*runtime[.]gcWriteBarrier`
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// arm64:-`.*runtime[.]gcWriteBarrier`
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p[3] = d
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}
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