Search results

runtime: Improve runtime.AddCleanup performance

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

Status: Open.

#75188 In golang/go;

· podtserkovskiy opened on Aug 29, 2025

cmd/compile: excessive time spent in line numbering

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Performance

Status: Open.

#75001 In golang/go;

· DanielMorsing opened on Aug 13, 2025

· 

Backlog

strconv: use DragonBox instead of Ryu for FormatFloat

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Performance

Status: Open.

#74886 In golang/go;

· snadrus opened on Aug 5, 2025

· 

Backlog

cmd/compile: ARM64 CSE flags generation between <code>CMP 0$</code> and instruction already setting the flags according to the result

arch-arm64

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

FeatureRequestIssues asking for a new feature that does not need a proposal.Issues asking for a new feature that does not need a proposal.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Status: Open.

#74878 In golang/go;

· Tabaie opened on Aug 4, 2025

· 

Unplanned

cmd/compile: redundant morestack spill space in nosplit functions

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Performance

Status: Open.

#74413 In golang/go;

· mcy opened on Jun 27, 2025

· 

Unplanned

cmd/compile: regalloc using multiple restores when one would do

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Performance

Status: Open.

#74365 In golang/go;

· randall77 opened on Jun 24, 2025

· 

Go1.26

runtime, cmd/compile: add runtime.free, runtime.freetracked and GOEXPERIMENT=runtimefree

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsDecisionFeedback is required from experts, contributors, and/or the community before a change can be made.Feedback is required from experts, contributors, and/or the community before a change can be made.

Status: Open.

#74299 In golang/go;

· thepudds opened on Jun 19, 2025

· 

Backlog

cmd/compile: on amd64, compiler's Zero operation is slower than memclrNoHeapPointers for 1024-2048 bytes

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Performance

Status: Open.

#74171 In golang/go;

· matloob opened on Jun 13, 2025

· 

Go1.26

unique: optimize interning of string([]byte) in structs/arrays

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Performance

Status: Open.

#73821 In golang/go;

· jakebailey opened on May 22, 2025

· 

Backlog

cmd/compile: play better with perf

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

Status: Open.

#73753 In golang/go;

· randall77 opened on May 16, 2025

· 

Go1.26

proposal: runtime: add valgrind hints to the runtime under special build mode

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

Proposal

Status: Open.

#73602 In golang/go;

· rolandshoemaker opened on May 5, 2025

· 

Proposal

runtime: remove mapaccess2 in favour of mapaccess (or in reverse)

compiler/runtimeIssues related to the Go compiler and/or runtime.Issues related to the Go compiler and/or runtime.

ImplementationIssues describing a semantics-preserving change to the Go implementation.Issues describing a semantics-preserving change to the Go implementation.

NeedsInvestigationSomeone must examine and confirm this is a valid issue and not a duplicate of an existing one.Someone must examine and confirm this is a valid issue and not a duplicate of an existing one.

Status: Open.

#73196 In golang/go;

· mateusz834 opened on Apr 7, 2025

· 

Backlog