Bug#919626: Emits NEON code on armv7a due to wrong CPU detection

[Sylvestre Ledru]

I fixed that in 7, I can probably easily backport the fix to 6.

S


Le 18/01/2019 à 04:41, M. Zhou a écrit :
> Package: llvm-6.0-dev
> Version: 1:6.0.1-9.2
> X-Debbugs-CC: ginggs at debian.org
>
> Dear LLVM maintainers,
>
> Recently Julia FTBFS on armhf due to SIGILL from NEON instruction.
> (ginggs digged into the SIGILL and confirmed it's due to NEON)
> However, julia is supposed to compile multiple code branches where
> one of them involves no NEON instruction. Emulation based on QEMU's
> cortex-a7 CPU proves this point.
>
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919183
>
> Neither Debian's LLVM, nor Julia's patched LLVM, has fixed this issue.
>
> The incorrect CPU detection can be reproduced on abel, LLVM
> also emits NEON code to abel's CPU.
>
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