Issues

• libm: generic fma drops the sticky bit after shifting x * y, so f64::mul_add on wasm32 is not correctly rounded

  rust-lang/compiler-builtins#1353 · Filter by author konard opened on Oct 13, 2026

• cbrtf64.rs streamlining opportunity ?

  rust-lang/compiler-builtins#1276 · Filter by author mogando668 opened on Aug 12, 2026
  2

• Software FMA for f32 returns wrong result for subnormals on x86_64

  rust-lang/compiler-builtins#1262 · Filter by author Shnatsel opened on Aug 9, 2026
  2

• Uses of min, max, and others may not be optimal

  perf
  rust-lang/compiler-builtins#1249 · Filter by author tgross35 opened on Aug 7, 2026
  1

• Correctly rounded math functions?

  rust-lang/compiler-builtins#1220 · Filter by author jdh8 opened on Jun 8, 2026

• Soft float arithmetic should propagate NaN sign

  rust-lang/compiler-builtins#1188 · Filter by author tgross35 opened on Apr 8, 2026
  2

• New generator logic

  rust-lang/compiler-builtins#1181 · Filter by author tgross35 opened on Apr 5, 2026
  1

• Dependency Dashboard

  rust-lang/compiler-builtins#1170 · Filter by author forking-renovate opened on Apr 1, 2026

• RISC-V runner segfault with cache

  rust-lang/compiler-builtins#1139 · Filter by author tgross35 opened on Mar 28, 2026
  8

• Move GitHub Actions secrets to environments

  rust-lang/compiler-builtins#1117 · Filter by author marcoieni opened on Mar 20, 2026
  8

  

• libm MSRV bump

  rust-lang/compiler-builtins#1017 · Filter by author tgross35 opened on Sep 5, 2025
  7

• Switch to *f32, *f64 names for libm

  libm
  rust-lang/compiler-builtins#1001 · Filter by author tgross35 opened on Jul 30, 2025
  3

  

• Seperate implementation of hex float parsing for performance

  libm
  rust-lang/compiler-builtins#851 · Filter by author CrazyboyQCD opened on Feb 20, 2025
  3

• How should we handle fenv?

  libm
  rust-lang/compiler-builtins#842 · Filter by author tgross35 opened on Jan 25, 2025
  5

• Add a nextest config to retry yn* and jn*

  libm
  rust-lang/compiler-builtins#841 · Filter by author tgross35 opened on Jan 25, 2025

• Change ilogb error conditions

  libm
  rust-lang/compiler-builtins#840 · Filter by author tgross35 opened on Jan 24, 2025

• For functions that don't have arch/intrinsic versions, only run tests once

  libm
  rust-lang/compiler-builtins#839 · Filter by author tgross35 opened on Jan 15, 2025

• Mismatch for ordering operations between -0.0 and +0.0

  libm
  rust-lang/compiler-builtins#838 · Filter by author tgross35 opened on Jan 13, 2025
  1

• List of specific test failures

  libm
  rust-lang/compiler-builtins#836 · Filter by author tgross35 opened on Jan 6, 2025
  18

• wasm32-unknown-unknown build as part of rustc contains object files for the wrong architecture when using GCC

  rust-lang/compiler-builtins#732 · Filter by author emilazy opened on Nov 9, 2024
  7

• multiple rlib candidates for compiler_builtins found

  rust-lang/compiler-builtins#712 · Filter by author AthiraRamakrishna opened on Oct 16, 2024
  4

• Native support for AVR instrinsics

  rust-lang/compiler-builtins#711 · Filter by author Patryk27 opened on Oct 14, 2024
  23

• Non-musl f32 functions?

  libm
  rust-lang/compiler-builtins#850 · Filter by author jdh8 opened on Aug 11, 2024
  13

• Infinite recursion in __extendhfsf2 and __truncsfhf2 on "no-f16-f128" platforms

  llvm
  rust-lang/compiler-builtins#651 · Filter by author liushuyu opened on Aug 2, 2024
  6

• powerpc64le truncation failure

  rust-lang/compiler-builtins#630 · Filter by author tgross35 opened on Jun 22, 2024
  1