efriedma added a comment. I think you're understanding the semantics correctly.
For r265521, look again at the implementation of llvm::checkUnaryFloatSignature; if "I.onlyReadsMemory()" is true, we somehow proved the call doesn't set errno (mostly likely because we know something about the target's libm). https://reviews.llvm.org/D39204 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
