Description of problem: llvm will look for valgrind.h and libedit and add some minor functionality it appears if present. Version-Release number of selected component (if applicable): 3.9.0-7
This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'.
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
BuildRequires: valgrind-devel added in llvm-4.0.1-4.fc28
These has been fixed in Fedora 27, I'm not planning to backport this to Fedora 26.