serge-sans-paille added a comment. Some benchmark / instrumentation report: due to the way memory moves are ordered in the entry block, there tend to be relatively few free probes between two stack growth within a function, and a large number after the last stack growth.
When recompiling llc, I only get 18 free probes between stack growth, and a large amount (several thousands) after the last stack growth. When recompiling cpython, I only get 4 free probes between stack growth. This may be improved by rescheduling instructions / changing stack object layout but that's probably not worth the effort (there's not that much functions with stack space > a page) Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D68720/new/ https://reviews.llvm.org/D68720 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
