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Funnel shift was using _sym_extract_helper incorrectly. The first bit index must be >= the second bit index. This caused hangs in _sym_extract_helper. Also, according to the docs llvm.fshl extracts the most-significant bits, while llvm.fshr extracts the least-significant. https://llvm.org/docs/LangRef.html#llvm-fshl-intrinsic
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The funnel shift helpers are using
_sym_extract_helperincorrectly.symcc-rt/src/RuntimeCommon.cpp
Line 440 in 892f817
The first bit index must be >= the second bit index. This caused hangs in _sym_extract_helper.
Also, according to the LLVM docs llvm.fshl should extract the most-significant bits, while llvm.fshr extracts the least-significant.