cmd/compile

New Issue

test to make sure that OPmodify ops clobber flagsNeedsFixTesting

#26426 opened 1 day ago by randall77

label redefinition error position is wrongNeedsFix

#26411 opened 2 days ago by odeke-em

internal compiler error: Type.Elem UNSAFEPTR [1.10 backport]CherryPickCandidate

#26402 opened 2 days ago by gopherbot

internal compiler error: Type.Elem UNSAFEPTRNeedsInvestigationWaitingForInforelease-blocker

#26398 opened 2 days ago by Saxon1

consider using DWARF 5Debugging

#26379 opened 5 days ago by aclements

internal prefix paths leaking into generated DWARFDebuggingNeedsFix

#26311 opened 1 week ago by thanm

CMOV instruction slower than branchPerformancerelease-blocker

#26306 opened 1 week ago by PeterRK

teach prove about more type conversion operationsNeedsInvestigationPerformance

#26299 opened 1 week ago by mvdan

prove doesn't know that integer extensions preserve boundsNeedsFixPerformancehelp wanted

#26292 opened 1 week ago by mvdan

method expressions in json.scanner are very slowNeedsInvestigationPerformance

#26273 opened 1 week ago by mvdan

optimize slice copy via make+copyPerformance

#26252 opened 1 week ago by bontibon

debug info for inlined funcs are sometimes lostDebuggingNeedsInvestigation

#26206 opened 2 weeks ago by hyangah

msan cannot handle structs with paddingNeedsInvestigation

#26167 opened 2 weeks ago by benesch

incorrect position information when -iexport=falseNeedsInvestigation

#26085 opened 3 weeks ago by alandonovan

record and use per-function optimization dataPerformance

#25999 opened 3 weeks ago by josharian

transform environment variable GOSSAFUNC into the option that is passed to compilerNeedsFix

#25942 opened 1 month ago by ysmolsky

possible missed optimization in append benchmarkNeedsInvestigationPerformance

#25916 opened 1 month ago by perillo

display the source code for inlined functions in ssa.htmlNeedsFix

#25904 opened 1 month ago by ysmolsky

merge sequential memory moves into bigger memory movesNeedsInvestigationPerformance

#25866 opened 1 month ago by valyala

teach the compiler that arguments passed to {strings|bytes}.{Index*|Count|Has*} don't escapeNeedsInvestigation

#25864 opened 1 month ago by valyala

teach prove.go that {strings|bytes}.Index* return value in the range [-1 .. len(s))NeedsInvestigationPerformance

#25862 opened 1 month ago by valyala

emit optimized assembly for checking the first chars before `{strings|bytes}.IndexByte` callPerformance

#25844 opened 1 month ago by valyala

incorrect cycle error reported by dowith()NeedsInvestigationearly-in-cycle

#25838 opened 1 month ago by griesemer

combine append callsPerformance

#25828 opened 1 month ago by Quasilyte

panic: branch too far on arm64 [1.10 backport]CherryPickCandidate

#25794 opened 1 month ago by gopherbot

non-inlineable allocating function in closure causes closure to allocateNeedsInvestigationPerformance

#25769 opened 1 month ago by twmb

detect divisions that always result in 0Performance

#25733 opened 1 month ago by davecheney

cannot import "./package" on Windows NeedsInvestigationOS-Windowshelp wanted

#25693 opened 1 month ago by ysmolsky

inconsistent acceptance of cyclic variable declaration (esoteric)NeedsInvestigation

#25677 opened 1 month ago by griesemer

confusing internal error when importing different packages with same name from different pathsNeedsFix

#25635 opened 1 month ago by griesemer

add GOAMD64 architecture variantsPerformance

#25489 opened 1 month ago by josharian

revisit statement boundaries CL peformance and binary size impactNeedsInvestigationToolSpeed

#25426 opened 2 months ago by josharian

unnecessary zeroing of AX after MOVBLZXPerformance

#25378 opened 2 months ago by davecheney

aggressive IMUL rewrites on AMD64 sometimes lead to performance regressionsNeedsInvestigationPerformance

#25358 opened 2 months ago by Quasilyte

autogenerated wrapper is not inlined NeedsInvestigationPerformance

#25338 opened 2 months ago by TocarIP

uint64(Float32bits(f)) on amd64 doesn't clear high bits [1.10 backport]CherryPickApprovedrelease-blocker

#25335 opened 2 months ago by gopherbot

call memmove on amd64 for large OpMovePerformance

#25317 opened 2 months ago by TocarIP

incorrect error for function conversion based on cyclic definition (esoteric)NeedsInvestigation

#25305 opened 2 months ago by griesemer

tweak branchelim heuristic on amd64Performance

#25298 opened 2 months ago by TocarIP

program causes compiler to hang indefinitelyNeedsInvestigation

#25262 opened 2 months ago by nathanjcochran

use proved bounds to remove signed division fix-upsNeedsFixPerformancehelp wanted

#25239 opened 2 months ago by josharian

BCE/Prove do not take arithmetic into accountNeedsInvestigation

#25197 opened 2 months ago by navytux

elide useless type assertionPerformance

#25189 opened 2 months ago by dsnet

detect bounded shifts of the form (bits-var) in provePerformance

#25169 opened 2 months ago by josharian

detect bounded shifts in generic rulesPerformance

#25168 opened 2 months ago by josharian

use bounded shift information on non-amd64 architecturesPerformanceSuggestedhelp wanted

#25167 opened 2 months ago by josharian

emit variable byte-sized bit tests on amd64Performance

#25156 opened 2 months ago by josharian

eliminate more dead storesPerformance

#25132 opened 2 months ago by TocarIP

take into account that floating point special cases (NaN, Inf) are unlikelyPerformancehelp wanted

#25125 opened 2 months ago by mundaym

regalloc's liveness analysis is quadraticToolSpeed

#25120 opened 2 months ago by josharian

prove pass doesn't draw signed int conclusions from range checksPerformance

#25115 opened 2 months ago by josharian

can not use statictmp_0 as variable nameNeedsFix

#25113 opened 2 months ago by aarzilli

optimize unaligned load-XOR-store on byte slicesPerformance

#25111 opened 2 months ago by mundaym

use bounds from prove pass to simplify shiftsPerformance

#25087 opened 2 months ago by josharian

add bounds information from non-control ops to prove passPerformance

#25086 opened 2 months ago by josharian

internal compiler error: no function definition for [0xc42181a5a0] [1.10 backport]CherryPickCandidate

#25039 opened 2 months ago by gopherbot

miscellaneous optimizationsPerformance

#24958 opened 3 months ago by benshi001

sometimes issue rematerializable values earlyPerformance

#24930 opened 3 months ago by josharian

avoiding zeroing new allocations when possiblePerformance

#24926 opened 3 months ago by josharian

compiler variable folding can break linker's -X optionNeedsInvestigation

#24890 opened 3 months ago by simonklb

bounds check elimination for `if len(x) > 32 { ...; x = x[8:]; ... }`NeedsFixPerformance

#24876 opened 3 months ago by dgryski

type-check cmd/compile/internal/syntax nodes directly

#24780 opened 3 months ago by griesemer

unexpected memequal call in short string comparisonNeedsFixPerformanceSuggestedhelp wanted

#24765 opened 3 months ago by bradfitz

bounds and overflow checks erroneously applied to non-constant expressionsNeedsFix

#24760 opened 3 months ago by mdempsky

incorrect error message when assigning an interface to a constantNeedsFix

#24755 opened 3 months ago by mundaym

inconsistent behaviors in judging whether or not two types are identicalNeedsFix

#24721 opened 3 months ago by dotaheor

incorrect column reported for "struct literal does not implement" errorNeedsFix

#24689 opened 3 months ago by dhowden

omit racefuncentry/exit when they are not neededPerformanceRaceDetector

#24662 opened 3 months ago by dvyukov

Fannkuch11 can be speed up by ~ 30% via improving BCENeedsFixPerformance

#24660 opened 3 months ago by navytux

eliminate empty switch casesNeedsFixPerformance

#24650 opened 3 months ago by josharian

document emitptrargsmap onebitwalktype1 callsDocumentationNeedsFix

#24648 opened 3 months ago by josharian

opt: reuse interface payload during interface conversionPerformance

#24582 opened 3 months ago by alandonovan

less optimized AMD64 codeNeedsFixPerformance

#24537 opened 3 months ago by benshi001

mishandling of unsafe-uintptr argumentsNeedsFix

#24491 opened 3 months ago by mdempsky

optimize large structsNeedsFixPerformance

#24416 opened 4 months ago by randall77

keeping a subset of a struct value's fields is slowPerformance

#24386 opened 4 months ago by mvdan

reject -race and -msan on non-amd64 archesNeedsFix

#24315 opened 4 months ago by mdempsky

slice update with self subslice - write barrier probably not needed (?)Performance

#24314 opened 4 months ago by navytux

esc.go fails to mark anonymous receiver parameters as non-escapingNeedsFix

#24305 opened 4 months ago by mdempsky

struct field alive too longNeedsFix

#24263 opened 4 months ago by randall77

loop optimizationNeedsInvestigationPerformance

#24240 opened 4 months ago by MichaelTJones

revisit append codegenPerformance

#24209 opened 4 months ago by josharian

tighten CFG as well as valuesPerformance

#24177 opened 4 months ago by josharian

use runtime.zeroVal for small zero-valued readonly static varsPerformance

#23948 opened 4 months ago by josharian

optimize comparison of large values with zeroPerformance

#23929 opened 4 months ago by josharian

missing panic on nil pointer-to-empty-struct dereferenceNeedsFixrelease-blocker

#23837 opened 5 months ago by mdempsky

avoid updating capacity if unusedNeedsFixPerformance

#23832 opened 5 months ago by dsnet

use strings.BuilderSuggestedToolSpeedhelp wanted

#23828 opened 5 months ago by josharian

better error message for failed string conversionNeedsFix

#23813 opened 5 months ago by griesemer

imperfect error message for too large index in slice composite literalNeedsInvestigation

#23781 opened 5 months ago by dotaheor

compiler crashes on programs with 1<<30 array keyNeedsInvestigation

#23780 opened 5 months ago by dotaheor

reuse allocated value in interfaceNeedsFixPerformance

#23677 opened 5 months ago by dsnet

stack allocate string and slice headers when passed through non-escaping interfacesNeedsFixPerformance

#23676 opened 5 months ago by dsnet

bad line number in error message calling variadic functionNeedsFix

#23660 opened 5 months ago by josharian

duplicate error on operation with mismatched typesNeedsFix

#23486 opened 6 months ago by mvdan

conversion error is a bit inaccurate

#23394 opened 6 months ago by hirochachacha

inefficient CALL setup when more than 32bytes of argsPerformance

#23377 opened 6 months ago by ALTree

allow body-less functions under -complete flag if they have a //go:linkname attributeNeedsFix

#23311 opened 6 months ago by mdempsky

high memory usage during compilationNeedsInvestigation

#23242 opened 6 months ago by quantexlab

validity of program depends on method declaration order

#23202 opened 7 months ago by griesemer

better escape analysis documentationDocumentationNeedsInvestigation

#23109 opened 7 months ago by mdempsky

more helpful "is not a type" error when variable shadows typeNeedsFixhelp wanted

#23065 opened 7 months ago by cramertj

inconsistent behaviour in multiple assignmentNeedsFix

#23017 opened 7 months ago by go101

slicing can be improved on ARMPerformance

#23006 opened 7 months ago by rasky

noop functions are not compiled away in certain casesWaitingForInfo

#22971 opened 7 months ago by pavel

unnecessary error after "cannot refer to unexported type"NeedsFix

#22921 opened 7 months ago by mvdan

implement powerpc 32-bit backend (ppc32)FeatureRequest

#22885 opened 7 months ago by rasky

cannot compile valid (but esoteric) self-recursive interface

#22825 opened 8 months ago by griesemer

treat pointer-to-go:notinheap types as scalarNeedsInvestigation

#22519 opened 8 months ago by mdempsky

reordering struct field accesses can alter performanceNeedsInvestigationPerformance

#22479 opened 8 months ago by mvdan

escape analysis loopdepth should reset when blocks endNeedsInvestigation

#22438 opened 8 months ago by mdempsky

ARM: add FMA supportNeedsFix

#22400 opened 8 months ago by rasky

generate correct DW_AT_external flagDebuggingNeedsFix

#22399 opened 8 months ago by thanm

should support multiple trimpath arguments and/or splitter in the GOPATHNeedsInvestigation

#22382 opened 8 months ago by polomsky

compiler can unexpectedly preserve memoryNeedsInvestigation

#22350 opened 9 months ago by zardlee1937

iota inside function in a ConstSpec is not acceptedNeedsFix

#22344 opened 9 months ago by griesemer

ICE: not lowered: v58, ITab PTR64 PTR64NeedsFixrelease-blocker

#22327 opened 9 months ago by mdempsky

incorrect package initialization order for spec exampleNeedsFix

#22326 opened 9 months ago by chadwhitacre

odd inlining heuristic under mid-stack inliningNeedsInvestigation

#22310 opened 9 months ago by mdempsky

regression in TestIntendedInlining on ppc64x, othersNeedsInvestigation

#22239 opened 9 months ago by laboger

consider adding sibling links to generated DWARFDebuggingNeedsInvestigation

#22185 opened 9 months ago by thanm

wrong line offset for "cannot use ... in argument" errorearly-in-cycle

#22167 opened 9 months ago by rsc

move DWARF go.info.* symbol generation out of the linkerNeedsInvestigation

#22094 opened 9 months ago by crawshaw

avoid allocations for some return valuesNeedsInvestigationPerformance

#22081 opened 9 months ago by crawshaw

"const _ string = 1" error message says integers can't be converted to stringsNeedsFix

#22070 opened 9 months ago by mdempsky

redundant branchPerformance

#22025 opened 9 months ago by randall77

incorrect and duplicate error for invalid string conversionNeedsFixhelp wanted

#21979 opened 9 months ago by griesemer

don't depend on statictmp_ variables being read onlyNeedsFix

#21940 opened 10 months ago by randall77

cleaner solution for exporting linkname infoearly-in-cycle

#21936 opened 10 months ago by mdempsky

selector expression resolves incorrectly for defined pointer typesNeedsFix

#21934 opened 10 months ago by griesemer

constant folding math/bits functionsPerformanceSuggestedhelp wanted

#21872 opened 10 months ago by markus-oberhumer

errors involving aliased types should use the alias nameNeedsFix

#21866 opened 10 months ago by bcmills

failure to reject initialization loopNeedsFix

#21752 opened 10 months ago by mdempsky

obscure initialization loop error message due to inliningNeedsFix

#21750 opened 10 months ago by dvyukov

avoid slow versions of LEA instructions on x86NeedsFixPerformanceearly-in-cycle

#21735 opened 10 months ago by martisch

optimize away some MOVQconvertsPerformance

#21572 opened 10 months ago by josharian

for small objects, use constants directly instead of copying from statictmpPerformance

#21561 opened 11 months ago by randall77

reuse temporaries introduced by compilerToolSpeed

#21557 opened 11 months ago by randall77

functions are inlined beyond boundary of shared librariesNeedsFix

#21510 opened 11 months ago by hirochachacha

optimize unsigned comparisons with zero/onePerformanceSuggested

#21439 opened 11 months ago by josharian

coalesce consecutive calls to print/println

#21417 opened 11 months ago by josharian

improve codegen for nested if statementsPerformance

#21394 opened 11 months ago by josharian

gdb 8 on windows crashes reading Go binaryNeedsInvestigationOS-Windows

#21380 opened 11 months ago by kjk

add and use go:nosplitrec compilation directiveNeedsFix

#21314 opened 11 months ago by ianlancetaylor

incorrect type assertions on conflicting package namesNeedsFix

#21282 opened 11 months ago by dsnet

late nilcheck elim doesn't elim later nilcheck

#20962 opened 1 year ago by josharian

CSE some function calls args/resultsPerformanceToolSpeed

#20934 opened 1 year ago by josharian

[]byte(string) incurs allocation even when it does not escapeNeedsFixPerformancehelp wanted

#20881 opened 1 year ago by rogpeppe

add OpAMD64CMPptr and friends?

#20873 opened 1 year ago by josharian

generate same code regardless of whether return values are namedNeedsFix

#20859 opened 1 year ago by bradfitz

runtime error: makeslice: len out of range

#20779 opened 1 year ago by josharian

"missing stack map index" for unreasonable type

#20778 opened 1 year ago by josharian

ugly error message for weird invalid program

#20771 opened 1 year ago by josharian

improve escape analysis of make([]T, n) where n is non-constantPerformance

#20533 opened 1 year ago by alandonovan

include certain NOP instructions when compiler optimizations are disabledDebuggingFeatureRequestNeedsFix

#20487 opened 1 year ago by dlsniper

init code or linker should verify package "fingerprint"NeedsFixhelp wanted

#20486 opened 1 year ago by griesemer

improve loop rotationPerformance

#20411 opened 1 year ago by josharian

lay out loop-free, likeliness-free control flow more compactlyPerformance

#20356 opened 1 year ago by josharian

trim more blocks?Performance

#20354 opened 1 year ago by josharian

inlining isn't performed on generated init functions early-in-cycle

#20321 opened 1 year ago by tzneal

pass values to some convT2ExxxPerformance

#20263 opened 1 year ago by josharian

internal compiler error: esc return list involving constant groups and unsafe.Sizeof

#20260 opened 1 year ago by josharian

missing line numbers with cgo pragmasNeedsInvestigation

#20214 opened 1 year ago by josharian

wasted bucket allocated on stack for non-escaping map when hint is not smallPerformanceSuggested

#20184 opened 1 year ago by josharian

possible confusion over whether phis are always the first values in a block

#20178 opened 1 year ago by josharian

move arch-specific rewrite rules and ops into arch-specific packagesNeedsFixPerformance

#20104 opened 1 year ago by josharian

big binary and slow compilation times with maps & []interface{} in static codeNeedsInvestigationToolSpeed

#20095 opened 1 year ago by philpennock

add special binary export encoding for iotas?ToolSpeed

#20088 opened 1 year ago by josharian

postpone argument conversions after inliningNeedsFixPerformance

#20087 opened 1 year ago by rasky

channel element type too large compiling errors are not reported for channels named with blank identiferNeedsFix

#20027 opened 1 year ago by go101

some problems on optimization when takes care about of arrays in structNeedsFixPerformancehelp wanted

#20022 opened 1 year ago by zhaozhiqianghw

big array not allocated on heap, which make program panic.NeedsFix

#20021 opened 1 year ago by go101

go:linkname prevents inliningPerformance

#20019 opened 1 year ago by dvyukov

remove Type.VargenNeedsFix

#19878 opened 1 year ago by josharian

possible infinite recursion in Type.cmp

#19869 opened 1 year ago by josharian

share statictmpPerformance

#19818 opened 1 year ago by QuestionPython

avoid copying if copied value isn't modifiedPerformance

#19817 opened 1 year ago by valyala

if x == a || x == b || x == c generates slower code than case a, b, cPerformance

#19791 opened 1 year ago by gaal

slow to compile large map literals containing dynamic elementsToolSpeed

#19751 opened 1 year ago by myleshorton

clumsy rematerialization in mapassign_fast*Performance

#19733 opened 1 year ago by philhofer

arm64: emit double-register loads and stores in loweringNeedsFixPerformance

#19715 opened 1 year ago by philhofer

Unnecessary register high-bytes rezeroing after unsigned right shiftPerformance

#19712 opened 1 year ago by navytux

generate closure for go/defer builtin calls

#19710 opened 1 year ago by unixpickle

eliminate linenoNeedsFixhelp wanted

#19683 opened 1 year ago by mdempsky

use FP-based frame zeroing outside of package runtime on plan9OS-Plan9Performance

#19650 opened 1 year ago by mdempsky

BLAS regressions at tip Performance

#19595 opened 1 year ago by btracey

avoid multiple returns from deferproc

#19466 opened 1 year ago by randall77

method is inlined instead of loaded from shared library

#19398 opened 1 year ago by davidlazar

an FSM with ~40k states takes a lot of memory to buildToolSpeed

#19379 opened 1 year ago by opennota

Devirtualize calls when concrete type behind interface is statically knownNeedsFixPerformance

#19361 opened 1 year ago by navytux

enable mid-stack inliningProposalProposal-Accepted

#19348 opened 1 year ago by davidlazar

needlessly early return value loads in runtime.scanobjectPerformance

#19195 opened 1 year ago by josharian

rewrite interface args by actual type args in functions called only with a single set of argument typesPerformance

#19165 opened 1 year ago by valyala

checking len(data) and erroring out if too small does not help BCENeedsFixPerformance

#19126 opened 1 year ago by navytux

add tool for understanding/debugging SSA rules

#19013 opened 1 year ago by josharian

Fannkuch11 on AMD64 slow down 6% after removing assembler backend instruction reorderingPerformance

#18977 opened 1 year ago by cherrymui

1.7 compiler does not compile program with large complex struct

#18920 opened 1 year ago by rdvorak

optimize Write([]byte(stringVal)) to not copy the stringPerformance

#18822 opened 1 year ago by ianlancetaylor

order.go is outdatedPerformanceToolSpeed

#18739 opened 2 years ago by josharian

avoid using large stack to partially zero structPerformance

#18636 opened 2 years ago by dsnet

performance problems with many long, exported identifiersNeedsInvestigationToolSpeed

#18602 opened 2 years ago by cretz

define register-based calling conventionProposalProposal-Hold

#18597 opened 2 years ago by dr2chase

fixedbug/issue10958.go failuresNeedsInvestigationTesting

#18589 opened 2 years ago by ALTree

byte type conversion optimizationsPerformance

#18575 opened 2 years ago by josselin-c

improve code generation for temporary slice copy and inliningPerformance

#18529 opened 2 years ago by rasky

eliminate some partial function / closure allocationsPerformance

#18493 opened 2 years ago by josharian

optimize type switchNeedsFixPerformance

#18492 opened 2 years ago by bradfitz

dead pointers kept alive across loop iterationsNeedsFixrelease-blocker

#18336 opened 2 years ago by mdempsky

investigate closure capture issue

#18300 opened 2 years ago by bradfitz

generate static calls when callee is knownPerformance

#18270 opened 2 years ago by alandonovan

remove stack check for leaf routinesPerformance

#18269 opened 2 years ago by randall77

some local variables are missing from DWARFDebugging

#18247 opened 2 years ago by alandonovan

improve map iterationPerformance

#18004 opened 2 years ago by cherrymui

insertVarPhis is very slowToolSpeed

#17926 opened 2 years ago by dvyukov

elide branches that must be takenPerformance

#17862 opened 2 years ago by dsnet

implement duffcopy on ppc64xPerformance

#17842 opened 2 years ago by bradfitz

spurious `foo.func1 redeclared in this block`NeedsFix

#17758 opened 2 years ago by dominikh

merge order/walk/instrument into buildssaToolSpeed

#17728 opened 2 years ago by mdempsky

remove all pointers from type information

#17724 opened 2 years ago by crawshaw

use better code for slicingPerformance

#17638 opened 2 years ago by randall77

optimize functions into boolean expressionsPerformance

#17622 opened 2 years ago by dsnet

improve inlining cost modelPerformanceToolSpeed

#17566 opened 2 years ago by josharian

-bench should correct for GCNeedsFix

#17434 opened 2 years ago by mdempsky

escape analysis too pessimistic for value-captures at closure evaluation.NeedsFixPerformanceearly-in-cycle

#17388 opened 2 years ago by dr2chase

large arrays cause large binaries and toolchain errorsNeedsDecision

#17378 opened 2 years ago by crawshaw

eliminate more bounds checksPerformance

#17370 opened 2 years ago by carl-mastrangelo

add line numbers for values and blocks at HTML SSA output?NeedsFix

#17314 opened 2 years ago by dAdAbird

generate the likely/unlikely bit on branches for ppc64xNeedsFixPerformance

#17235 opened 2 years ago by laboger

optimize f32Slice[i] += 1 across math.Float32bits, Float32frombitsNeedsFix

#17220 opened 2 years ago by nigeltao

elimination of unused runtime callsPerformance

#17216 opened 2 years ago by DmitriyMV

optimizing multiple accesses to same key in mapNeedsFix

#17133 opened 2 years ago by rasky

pointless static copy codeNeedsFixPerformanceToolSpeed

#17113 opened 2 years ago by josharian

avoid reloads of temp register on ppc64le, othersNeedsFixPerformance

#17110 opened 2 years ago by laboger

combine contiguous multi-byte comparisons to a constantPerformance

#17106 opened 2 years ago by josharian

reuse algs for [N]T arrays

#17031 opened 2 years ago by mdempsky

make algs content-addressable

#17029 opened 2 years ago by josharian

detect call trees that can be marked NOSPLITPerformance

#17023 opened 2 years ago by josharian

use common ancestor blocks in CSE?Performance

#16973 opened 2 years ago by josharian

move most (*Type).IsFoo methods to (EType).IsFooNeedsFixearly-in-cycle

#16929 opened 2 years ago by mdempsky

inline reflect.TypeOf?Performance

#16869 opened 2 years ago by bradfitz

teach BCE about copy return valuePerformance

#16833 opened 2 years ago by josharian

should recognize binary package and intrinsify it where possiblePerformance

#16832 opened 2 years ago by dr2chase

make SSA IDs stable across passesNeedsFix

#16754 opened 2 years ago by bradfitz

move SSA boolean optimizations to generic level

#16747 opened 2 years ago by josharian

panic while compiling empty package in a loopWaitingForInfo

#16726 opened 2 years ago by felixge

missed prove inferences with uint conversionsNeedsFixPerformance

#16653 opened 2 years ago by josharian

print better error message when assigning to keywords

#16521 opened 2 years ago by dsnet

lower % using multiply and subtract when the result of / is knownPerformance

#16416 opened 2 years ago by josharian

slightly unclear heap escape message (with -m)NeedsFix

#16300 opened 2 years ago by cespare

make UNDEF into a pseudo-instructionNeedsFix

#16291 opened 2 years ago by josharian

migrate amd64-specific optimizations to generic optimizationsNeedsFixearly-in-cycle

#16270 opened 2 years ago by josharian

new backend; multiple efficiency issues...NeedsFixPerformance

#16192 opened 2 years ago by GordonBGood

go1.7beta2 performance regression (floats and arrays)NeedsInvestigationPerformance

#16187 opened 2 years ago by taruti

go1.7beta2 performance regressionNeedsFixPerformance

#16141 opened 2 years ago by samuel

poor register allocator behavior in compression codeNeedsFixPerformance

#16122 opened 2 years ago by flanglet

do front-end constant evaluation across simple inlined function boundariesNeedsFixPerformance

#16108 opened 2 years ago by josharian

complicated bounds check eliminationNeedsFixPerformance

#16092 opened 2 years ago by GordonBGood

escape analysis of interface calls to unexported method names

#16001 opened 2 years ago by mdempsky

compiler does not allow "direct binding" of function return values to `copy` argumentsNeedsFix

#15992 opened 2 years ago by momchil-velikov

SSA performance regression due to array zeroingNeedsFixPerformance

#15925 opened 2 years ago by hydroflame

add and use yyerrornNeedsFix

#15913 opened 2 years ago by josharian

don't copy static array in range statementNeedsFixPerformanceearly-in-cycle

#15812 opened 2 years ago by randall77

loads/constants not lifted out of loopNeedsFixPerformance

#15808 opened 2 years ago by randall77

signed rounding adjustments unnecessary when comparing modulus to 0NeedsFixPerformance

#15806 opened 2 years ago by randall77

misleading error for multiple value function call in contexts that do accept multiple values

#15785 opened 2 years ago by tmielcza

recognize continuous runs in switch casesPerformanceToolSpeed

#15780 opened 2 years ago by josharian

Poor error message when invoking method on embedded type

#15711 opened 2 years ago by dsymonds

make ascompatte generate less garbageNeedsFix

#15665 opened 2 years ago by josharian

investigate SSA stack size regressionsNeedsInvestigationearly-in-cycle

#15597 opened 2 years ago by josharian

better error message for scoped type errorNeedsFix

#15575 opened 2 years ago by gouthamve

support inlining non-escaping closuresPerformance

#15561 opened 2 years ago by josharian

SSA performance regression on polygon codeNeedsFixPerformanceearly-in-cycle

#15532 opened 2 years ago by nkovacs

evaluate the need for shortcircuitNeedsInvestigationPerformanceearly-in-cycle

#15512 opened 2 years ago by brtzsnr

spurious "cannot use _ as value" errorNeedsFixearly-in-cycle

#15481 opened 2 years ago by adonovan

off-by-many in line number reported for compile errorNeedsFix

#15459 opened 2 years ago by dominikh

unexplained allocation for convT2IPerformance

#15451 opened 2 years ago by robpike

ephemeral slicing doesn't need protection against next object pointersPerformance

#15397 opened 2 years ago by randall77

eliminate all (some?) convT2{I,E} callsNeedsFixPerformanceearly-in-cycle

#15375 opened 2 years ago by randall77

move Type.Width and Type.Align into Extra fieldsToolSpeed

#15308 opened 2 years ago by josharian

make deadcode pass cheaper and do it after cseNeedsFixToolSpeed

#15306 opened 2 years ago by josharian

combine extension with register loads and stores on amd64Performance

#15300 opened 2 years ago by josharian

sync/atomic.SwapPointer arguments escape for the wrong reasonNeedsFix

#15283 opened 2 years ago by aclements

eliminate write barrier for self-referencing pointerPerformance

#15238 opened 2 years ago by randall77

suboptimal compilation of struct-valued switch statementsPerformance

#15164 opened 2 years ago by mdempsky

possible inlining bug with variable renaming?

#15111 opened 2 years ago by griesemer

make available as a library

#15108 opened 2 years ago by ghost

generate MOVZX instead of AND where applicablePerformance

#15105 opened 2 years ago by martisch

bounds check not removed after "if index < length"Performance

#15074 opened 2 years ago by rasky

adding a constant to a memory location needs 3 instructionsPerformance

#15054 opened 2 years ago by brtzsnr

merge TPTR32 and TPTR64 into TPTR?

#15032 opened 2 years ago by mdempsky

unnecessary branchingPerformance

#15031 opened 2 years ago by randall77

BLAS Idamax regressionNeedsFixPerformanceearly-in-cycle

#14995 opened 2 years ago by btracey

confusing type checking error

#14948 opened 2 years ago by aclements

consider write barrier short-circuit when *dst == srcPerformance

#14921 opened 2 years ago by josharian

improve escape analysis understanding of tree structures

#14858 opened 2 years ago by josharian

unnecessary bounds checks are not removedPerformance

#14808 opened 2 years ago by brtzsnr

for-loops cannot be inlinedPerformance

#14768 opened 2 years ago by dsnet

let SSA store to PPARAMOUT variables earlier than returnNeedsFixearly-in-cycle

#14762 opened 2 years ago by randall77

redundant loop generated for comparing/hashing arrays of size 1.Performance

#14723 opened 2 years ago by brtzsnr

"dot import" causes confusing error in 1.6NeedsFix

#14683 opened 2 years ago by ThisGuyCodes

performance of embedded interfaces

#14677 opened 2 years ago by OneOfOne

type checking fails in cycle involving recursive struct and unsafe.SizeofNeedsFix

#14620 opened 2 years ago by rsc

SSA, use CMPconst for write barrierPerformance

#14587 opened 2 years ago by randall77

SSA, don't re-copy spilled output parametersPerformance

#14586 opened 2 years ago by randall77

coverage instrumentation for fuzzing

#14565 opened 2 years ago by dvyukov

recognize append loopPerformance

#14325 opened 2 years ago by bradfitz

optimize slice access with constant upper/lower boundPerformance

#14266 opened 2 years ago by OneOfOne

stack overflow accessing large return valueNeedsFix

#14028 opened 2 years ago by Opposition

Need better type propagationPerformance

#14018 opened 2 years ago by dr2chase

runs out of memory allocating 12k + items in a map at init, works as literal mapNeedsFix

#13554 opened 2 years ago by pindamonhangaba

escape analysis overconservative for recursive callsNeedsFix

#13547 opened 2 years ago by dr2chase

storing pointer of a local value escapesPerformance

#13493 opened 2 years ago by dsnet

Suggest typo fixes for resolution errors

#13477 opened 2 years ago by Manishearth

performance issue with ranging over stringPerformance

#13162 opened 2 years ago by mpvl

turn nilcheckelim into branchelimNeedsFixPerformance

#12628 opened 2 years ago by josharian

clarify how unsafe.Pointers may be used to determine offsets between addresses

#12445 opened 2 years ago by kortschak

disambiguate package short names in "is not assignable" compile errors

#12399 opened 2 years ago by doherty

real and imag don't accept untyped non-complex constants as arguments

#11946 opened 3 years ago by griesemer

reconsider zeroing thresholds for arm64

#10981 opened 3 years ago by josharian

some large-temp-heap-allocations need to be moved before escape analysis

#10936 opened 3 years ago by dr2chase

constant indexing into map literals should be folded

#10848 opened 3 years ago by mdempsky

inefficient increment of global array

#10432 opened 3 years ago by dvyukov

use conditional execution in place of branches for small blocks on arm

#10382 opened 3 years ago by josharian

assigning large values does not use memmove

#10362 opened 3 years ago by davecheney

inline function calls that return a closurePerformance

#10292 opened 3 years ago by potocnyj

treat []byte("xyz") and []byte{'x', 'y', 'z'} the same during escape analysis

#10170 opened 3 years ago by tdewolff

improve generated type equality code

#9930 opened 3 years ago by josharian

don't emit writebarrier for stores to newly allocated objectsPerformance

#9755 opened 3 years ago by dvyukov

better error message when attempting to use a shadowed type name

#9655 opened 3 years ago by pwaller

enhancements to the gc inliner and optimizer

#9337 opened 3 years ago by tildeleb

package type name collision with built-in types in compiler error messagesNeedsFix

#8983 opened 3 years ago by gopherbot

optimisations change the behaviour of *struct{}

#8938 opened 3 years ago by ainar-g

recognize case <-time.After(x)Performance

#8895 opened 3 years ago by dvyukov

confusing error messages when a type is repeatedSuggested

#8853 opened 3 years ago by btracey

merge temporaries more aggressivelyNeedsFixPerformance

#8740 opened 3 years ago by josharian

atomic intrinsics for runtime and sync/atomicPerformance

#8739 opened 3 years ago by dvyukov

random performance fluctuations after unrelated changesNeedsFixPerformance

#8717 opened 3 years ago by dvyukov

In struct literals, type check outside in rather than inside out.

#8659 opened 3 years ago by btracey

confusing and inconsistent error messages for syntactically incorrect method expressions

#8605 opened 3 years ago by griesemer

gc inconsistent about reporting "unused variable" errorsNeedsFixearly-in-cycle

#8560 opened 3 years ago by adonovan

Manually calling init should provide a better error message, currently says "undefined: init"NeedsFix

#8481 opened 4 years ago by augustoroman

inline forwarding thunk functionsPerformance

#8421 opened 4 years ago by dvyukov

Wrong type reported for constant in type mismatch report

#8409 opened 4 years ago by btracey

Debug information missing : no stack info , no variables info using gdb

#8357 opened 4 years ago by gopherbot

Opportunity for de-pessimization in provably const range loopsSuggested

#8346 opened 4 years ago by thockin

does not understand old linker flags

#8104 opened 4 years ago by dvyukov

report all missing methods on failed interface satisfaction

#8095 opened 4 years ago by btracey

independent variables should be initialized in declaration order

#7962 opened 4 years ago by griesemer

rethink temporary names

#7923 opened 4 years ago by josharian

bootstrap array causes bytes.Buffer to always be heap-allocatedNeedsFixhelp wanted

#7921 opened 4 years ago by lukescott

crash due to running out of memory (likely)

#7755 opened 4 years ago by griesemer

escape analysis does not analyze closure callsPerformance

#7714 opened 4 years ago by randall77

don't use REP prefix for reverse-order copying on amd64, 386

#7681 opened 4 years ago by randall77

recognize x[:] of global array x as static data

#7651 opened 4 years ago by mpvl

combine slice header and backing array for static slices into a single symbol

#7637 opened 4 years ago by josharian

do more static initialization at compile time rather than runtime

#7599 opened 4 years ago by josharian

method definitions based on later-defined methods don't compile (pathological)NeedsFix

#7495 opened 4 years ago by griesemer

top-level var does not respect , rule

#7320 opened 4 years ago by adonovan

escape analysis oddity

#7213 opened 4 years ago by davecheney

allocate some defers in stack framesNeedsFixPerformanceearly-in-cycle

#6980 opened 4 years ago by randall77

improve compiler error message when accessing type instead of instance of type

#6814 opened 4 years ago by btracey

support for explicit alignment annotationsThinking

#6752 opened 4 years ago by gopherbot

skip slicebytetostring when argument doesn't escapeGarbageCollectorPerformance

#6714 opened 4 years ago by bradfitz

use less memory for large []byte literalNeedsFixToolSpeedhelp wanted

#6643 opened 4 years ago by rsc

internal compiler error with self-referential method in interface

#6638 opened 4 years ago by griesemer

spurious error for recursive anonymous interface type

#6601 opened 4 years ago by adonovan

odd/inconsistent behavior with cyclic declarations

#6590 opened 4 years ago by griesemer

8MB error message for one char error

#6589 opened 4 years ago by griesemer

missing "imported and not used" error for dot-import

#6428 opened 4 years ago by griesemer

unsafe.Pointer not treated as a pointer for embedding

#6357 opened 4 years ago by griesemer

poor performance when accessing slices for numerical work (multiplying vectors)Performance

#6206 opened 4 years ago by gopherbot

less export data

#6110 opened 5 years ago by robpike

write internals documentsDocumentation

#6059 opened 5 years ago by rsc

missed escape analysis opportunity

#5919 opened 5 years ago by edsrzf

emits unnecessary deferreturnPerformance

#5712 opened 5 years ago by dvyukov

compile dense, pure-integer "switch" into jump tablePerformance

#5496 opened 5 years ago by cloneable

avoid closure for captured dynamic constant

#5370 opened 5 years ago by lexprfuncall

too many errors stops too early -- check other related errors

#5142 opened 5 years ago by btracey

more clever syntax error reporting

#5129 opened 5 years ago by btracey

allow methods implemented in assemblyNeedsDecisionThinking

#4978 opened 5 years ago by MichaelTJones

init loop does not trace through inlined functions

#4758 opened 5 years ago by rsc

omit zeroing of named return value when possible

#4750 opened 5 years ago by rsc

error message for bad case in switch should suggest selectThinking

#4697 opened 5 years ago by adg

introduce CINT64 to reduce memory footprint

#4617 opened 5 years ago by davecheney

panicking composite literals not properly flushed to globalsThinking

#4608 opened 5 years ago by DanielMorsing

which errors are confusing?Suggested

#4566 opened 5 years ago by rsc

possible error message improvement

#4565 opened 5 years ago by rsc

compiler can fault in low memory conditions

#4415 opened 5 years ago by bradfitz

eliminate duplicate instrumentation in racewalkPerformanceRaceDetector

#4247 opened 5 years ago by dvyukov

output variable names in data race reportsRaceDetector

#4246 opened 5 years ago by dvyukov

diagnose unused variable even in closureNeedsFixearly-in-cycle

#3059 opened 6 years ago by rogpeppe

why are stack frames so large?Performancehelp wanted

#2734 opened 6 years ago by rsc

static init maps should never generate code

#2559 opened 6 years ago by rsc

emit info about used types in local types section of export data, for checking by ld.

#2474 opened 6 years ago by rsc

include registerization info for gdb

#2430 opened 6 years ago by ianlancetaylor

read-only escape analysis and avoiding string <-> []byte copiesGarbageCollectorNeedsFixPerformance

#2205 opened 6 years ago by bradfitz

infinite recursion generating symbol for recursive type

#1909 opened 7 years ago by gopherbot

1.3MB program takes 290MB of memory to compilePerformance

#1860 opened 7 years ago by davecheney

make 64-bit fields 64-bit aligned on 32-bit systemsNeedsInvestigation

#599 opened 8 years ago by rsc