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The interiteration issue with LLVM's noalias has been known for years: https://reviews.llvm.org/D9375 https://reviews.llvm.org/D9375 I even filed a version of
by cwzwarich 7y ago
The interiteration issue with LLVM's noalias has been known for years:
https://reviews.llvm.org/D9375 https://reviews.llvm.org/D9375
I even filed a version of it myself:
https://bugs.llvm.org/show_bug.cgi?id=27955 https://bugs.llvm.org/show_bug.cgi?id=27955
I'm actually surprised that Rust enabled noalias usage with this known outstanding issue. When I worked on Rust years ago, it was definitely common knowledge on the compiler "team" that this was broken.
I'm equally surprised that GCC had that bug, since their pointer aliasing model is equipped to correctly handle this situation (and is why they were able to fix it quickly).