[PATCH] D58632: [X86] Improve lowering of idemptotent RMW operations

[Philip Reames via llvm-commits]

Would you like me to revert this patch while we fix the issue it exposed?

Philip

On 5/10/19 9:59 AM, Craig Topper via Phabricator wrote:
> craig.topper added a comment.
>
> You’ll need to use llc to crash. But I can guess the issue now. SLH is expecting the memory address to have a virtual register as a base register, but we forced RSP on this access. We need to teach SLH about this case
>
>
> Repository:
>   rL LLVM
>
> CHANGES SINCE LAST ACTION
>   https://reviews.llvm.org/D58632/new/
>
> https://reviews.llvm.org/D58632
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>
>