| author |  Ayoctl <jsistsir@gmail.com> 2026-10-17 06:47:35+09:00 |
| committer | Ayoctl <jsistsir@gmail.com> 2026-10-17 07:32:55+09:00 |
| log | 588aa35b3a83bf7d3db17db8187d82257bdea2c9 |
| tree | 267352f22584460aec135331eb7a3b16b767fc3e |
| parent | f5c77d3145d975d46c832390758f679c1f382b1a |
Workaround miscompilation on Apple Silicon CPUs
As of 9cf3a2b7f8dbb, a handful of CPU features were added to Apple
Silicon CPU models. This results in a broken compiler reporting
`error.OutOfMemory` when it is compiled against those targets in release
mode.
A compiler built with `-DZIG_TARGET_MCPU=baseline` doesn't crash, and
neither does one built after the LLVM 23 update, so it is likely that
the LLVM 22 backend is mishandling these new features.
Considering that this has already been fixed in LLVM 23, it is
reasonable to introduce a workaround that gates a feature that a) fixes
the problem and b) has less impact overall, hence this fix for 0.17.1.1 files changed, 15 insertions(+), 0 deletions(-)
lib
std
zig
lib/std/zig/system.zig+15
| ... | ... | @@ -453,6 +453,21 @@ pub fn resolveTargetQuery(io: Io, query: Target.Query) DetectError!Target { |
| 453 | 453 | if (result.cpu.arch.isXtensa() and result.abi == .call0) { |
| 454 | 454 | result.cpu.features.removeFeature(@backingInt(Target.xtensa.Feature.windowed)); |
| 455 | 455 | } |
| 456 | ||
| 457 | // A workaround for https://codeberg.org/ziglang/zig/issues/37215. | |
| 458 | const apple_silicon_models = [_]*const Target.Cpu.Model{ | |
| 459 | &Target.aarch64.cpu.apple_m1, | |
| 460 | &Target.aarch64.cpu.apple_m2, | |
| 461 | &Target.aarch64.cpu.apple_m3, | |
| 462 | &Target.aarch64.cpu.apple_m4, | |
| 463 | &Target.aarch64.cpu.apple_m5, | |
| 464 | }; | |
| 465 | for (apple_silicon_models) |model| { | |
| 466 | if (result.cpu.model == model) { | |
| 467 | result.cpu.features.removeFeature(@backingInt(Target.aarch64.Feature.fuse_aes)); | |
| 468 | break; | |
| 469 | } | |
| 470 | } | |
| 456 | 471 | } |
| 457 | 472 | |
| 458 | 473 | // It's possible that we detect the native ABI, but fail to detect the OS version or were told |