On 05/06/20 13:10 -0600, Jeff Law wrote:
On Fri, 2020-06-05 at 20:51 +0200, Florian Weimer wrote:
* Jeff Law:
> As we both know, GCC has had ABI bugs as well. Both compilers strive
> to be ABI compatible with each other and we should continue to work
> together to find and address such issues. SImilarly both compilers
> are going to have codegen issues, or rejects-valid-code bugs.
> Ultimately they're just bugs and I don't see that one toolchain or the
> other is inherently better than the other, particularly WRT ABI
> issues.
More problematic are not ABI bugs, but the cases where the ABI
divergence is a matter of opinion (more or less).
Yes because these are much less likely to get fixed. THankfully these don't pop
up nearly as often.
I think we really should figure out what to do about the alignment of
_Atomic long long on 32-bit. GCC has 4, Clang has 8. Clang seems to be
correct here. This also has implications for the use of libatomic.
Yes. I thought we bumped up that bug in the database so that it'd get some
attention in the gcc-10 cycle. But I couldn't follow it myself, so I don't know
what happened.
Nothing, in any of GCC, LLVM or the psABI.
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