labrinea wrote: > From the patch it is clear all CPUs that implement MTE only support MTE2 - > and it seems unlikely this will change.
Not quite true. I didn't change those CPU entries to keep the behavior NFC, which may have been a mistake actually. The reference manual suggests that Neoverse N2, or Cortex-X2 for example only have FEAT_MTE (or at least there is no mention of FEAT_MTE2 in the documents). > Note the extra MTE2 instructions are only available in EL1 IIRC. So there is > no use for differentiating between them for the purpose of FMV (which targets > EL0). This is actually a convincing argument. > Also adding new +mte/+mte2 options on the commandline will create > incompatibilities with GCC and binutils unless we did the same. I am not exposing any of +mte/+mte2 on the commandline, so there shouldn't be any concerns for compatibility with GCC. https://github.com/llvm/llvm-project/pull/109299 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
