| author |  Matthew Lugg <mlugg@mlugg.co.uk> 2026-03-17 09:22:04+00:00 |
| committer |  Andrew Kelley <andrew@ziglang.org> 2026-03-18 01:02:29+01:00 |
| log | 6f7840d589cd9abce1b8eb5be87288ba3d5ffc00 |
| tree | 75fbbf3d77bd237c319aa87ed0186a463202b9ab |
| parent | 032319c94257e650abc7a4743298154c218dba89 |
llvm: disable loop vectorization for now
https://github.com/llvm/llvm-project/issues/186922 is pretty serious for
us, because it is causing the Zig compiler itself to get miscompiled in
many common configurations. I don't feel comfortable trying to work
around this by disabling certain CPU features, because that seems
incredibly brittle. I think it's probably best we disable loop
vectorization entirely until we upgrade to a version of LLVM where this
bug is fixed.
This will pessimise codegen in some cases, which is unfortunate, but
that's preferable to miscompilations.0 files changed, 0 insertions(+), 0 deletions(-)