[PATCH] D58632: [X86] Improve lowering of idemptotent RMW operations
Craig Topper via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri May 10 09:59:17 PDT 2019
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
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rL LLVM
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https://reviews.llvm.org/D58632/new/
https://reviews.llvm.org/D58632
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