rust-lang/rustc_codegen_gcc

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libgccjit AOT codegen for rustc

Stars: 1.2k
Forks: 105
Open beginner issues: 0
Indexed issues: 156
Avg merge: 8h 20m
Merged PRs (30d): 14

Dominant language: Rust
License: Apache-2.0
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue help wanted

Beginner friendly Everything

Open All

156 open issues indexed

Use rustfmt more and better Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rust-lang/rustc_codegen_gcc#670 · Opened May 10, 2025
Support retpolines Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#661 · Opened May 6, 2025
IRC and Matrix channels are not linked anymore Open

help wanted

Difficulty 4/5 3-5 days Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#655 · Opened Apr 29, 2025
Document some common errors Open

documentation

Difficulty 2/5 1-3 hours Newbie friendliness 55/100

rust-lang/rustc_codegen_gcc#649 · Opened Apr 13, 2025
Avoid wrapping constant allocations in packed structs when not necessary Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#643 · Opened Mar 27, 2025
rust build failure on Fedora 41 Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

rust-lang/rustc_codegen_gcc#641 · 2 comments · Opened Mar 14, 2025
simd_gather/scatter implementations seem fundamentally wrong Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#640 · Opened Mar 3, 2025
`y` sets `LIBRARY_PATH` which confuses gcc when compiling for a different target Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rust-lang/rustc_codegen_gcc#638 · 1 comment · Opened Feb 26, 2025
Run the UI tests (or some other tests) with GCC and LLVM and compare the stack size Open

tests

Difficulty 4/5 3-5 days Newbie friendliness 28/100

rust-lang/rustc_codegen_gcc#632 · Opened Feb 14, 2025
Add support for address space Open

enhancement libgccjit

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#615 · 1 comment · Opened Jan 28, 2025
Too many variables are created in some cases Open

perf

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#611 · 12 comments · Opened Jan 27, 2025
Handle pointee_align Open

enhancement good first issue

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#606 · 2 comments · Opened Jan 23, 2025
Invalid loads in core::simd::splat for vectors with >= 4 elements. Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

rust-lang/rustc_codegen_gcc#605 · 5 comments · Opened Jan 22, 2025
Integrate GCC profiling capabilities (if any) with -Zself-profile Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#598 · Opened Jan 15, 2025
Remove code to handle multiple with overflow for i32 and i64 Open

enhancement

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#593 · 2 comments · Opened Jan 12, 2025
Warning from the LTO frontend about mismatching types for core::num::dec2flt::table::POWER_OF_FIVE_128 Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#589 · Opened Jan 11, 2025
Possible bug in 128-bit integers implementation (gcc_checked_binop) Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#588 · 1 comment · Opened Jan 11, 2025
Seems like we generate more code than cg_llvm Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#587 · 1 comment · Opened Jan 9, 2025
Some global symbols cannot be used Open

bug libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#585 · 2 comments · Opened Jan 2, 2025
Fix for memory operands Open

bug libgccjit

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#584 · Opened Jan 2, 2025
Simplify generate_intrinsics.py Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#575 · Opened Dec 6, 2024
Implement variable lifetimes Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#569 · 3 comments · Opened Oct 18, 2024
Implement the tile intrinsics Open

good first issue

rust-lang/rustc_codegen_gcc#563 · 2 comments · 1 assignee · Opened Sep 27, 2024
Improve the documentation for new contributors Open

documentation

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#562 · 3 comments · Opened Sep 23, 2024
the SuperH backend Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#558 · 2 comments · Opened Aug 19, 2024
libgccjit ICE when compiling to arm-unknown-linux-gnueabi Open

bug

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#557 · 1 comment · Opened Aug 13, 2024
Targeting a specific MIPS arch: internal compiler error on building `compiler_builtins` stemming from ABI troubles. Open

Difficulty 5/5 Over a week Newbie friendliness 32/100

rust-lang/rustc_codegen_gcc#546 · 4 comments · Opened Jul 28, 2024
Re-enable libgccjit12 tests when the Rust compiler no longer replaces the type of global variables Open

sync

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#539 · Opened Jul 5, 2024
Better removal of UI tests with errors emitted by the frontend Open

good first issue sync

Difficulty 3/5 1-2 days Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#537 · 3 comments · Opened Jul 5, 2024
libgccjit testsuite seems to fail due to compile errors in libgccjit++.h Open

tests

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#536 · 3 comments · Opened Jul 3, 2024
Make get_target_info() less error-prone Open

libgccjit

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#531 · Opened Jun 13, 2024
Can't build sysroot Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#525 · 17 comments · Opened May 26, 2024
Bindgen-like support Open

hard libgccjit

Difficulty 5/5 Over a week Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#518 · 6 comments · 1 reaction · Opened May 10, 2024
Make sure the GCC backend does not assume "pointer lifetime end zap" rules Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#517 · 3 comments · Opened May 10, 2024
Make sure memcpy/memmove/memset with size 0 behave correctly Open

good first issue

rust-lang/rustc_codegen_gcc#516 · 8 comments · 1 reaction · 1 assignee · Opened May 10, 2024
Make sure `offset(0)` is handled correctly Open

libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#515 · 1 comment · Opened May 10, 2024
Replace custom implementation of 128-bit integers by C23 __BitInt Open

enhancement libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#514 · Opened May 7, 2024
Instructions should use shell syntax Open

good first issue

rust-lang/rustc_codegen_gcc#501 · 4 comments · 1 assignee · Opened Apr 20, 2024
Verify if the checks for float sizes in libgccjit are necessary Open

libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#487 · Opened Apr 7, 2024
Build the sysroot correctly with regards to panic Open

rust-lang/rustc_codegen_gcc#479 · 1 assignee · Opened Mar 24, 2024
Use SAVE_EXPR for freeze Open

libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#476 · Opened Mar 21, 2024
ICE: hir: index out of bounds: the len is 5 but the index is 5 Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#473 · 3 comments · Opened Mar 16, 2024
Location generation in debuginfo treats mangled names as short names Open

libgccjit

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#472 · 3 comments · Opened Mar 15, 2024
When we have rustup distribution, have a nightly CI in here to run all the tests on the version distributed by rustup Open

rust-lang/rustc_codegen_gcc#448 · 1 assignee · Opened Feb 19, 2024
Run the tests with -fanalyzer in the CI Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#442 · 1 comment · Opened Feb 16, 2024
Check that the libgccjit packages are the most optimized for distribution Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

rust-lang/rustc_codegen_gcc#441 · Opened Feb 16, 2024
Rust for Linux Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#417 · Opened Jan 25, 2024
Minimal implimentation of prefetch Open

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

rust-lang/rustc_codegen_gcc#414 · 6 comments · Opened Jan 16, 2024
AVR support Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

rust-lang/rustc_codegen_gcc#406 · 17 comments · 2 reactions · Opened Dec 23, 2023
Allow running the tests locally with a custom toolchain Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

rust-lang/rustc_codegen_gcc#403 · 1 comment · Opened Dec 21, 2023

rust-lang/rustc_codegen_gcc

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