Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
LLVMgold.so
LLVMgold.so(LLVM_7)
clang
libLTO.so.7
libLTO.so.7(LLVM_7)
llvm7-clang
llvm7-clang(x86-32)

Requires :

libstdc++.so.6(GLIBCXX_3.4)
libLLVM-7svn.so
/usr/bin/env
libgcc_s.so.1(GLIBC_2.0)
libxml2.so.2(LIBXML2_2.6.0)
libstdc++.so.6(GLIBCXX_3.4.15)
libstdc++.so.6(GLIBCXX_3.4.9)
libgcc_s.so.1
libstdc++.so.6(GLIBCXX_3.4.18)
libc.so.6(GLIBC_2.1.3)
libstdc++.so.6(CXXABI_1.3.5)
libclang.so.7(LLVM_7)
libstdc++.so.6(GLIBCXX_3.4.19)
libc.so.6(GLIBC_2.2)
libxml2.so.2(LIBXML2_2.5.2)
libc.so.6(GLIBC_2.0)
libclang.so.7
llvm7 = 7.0~svn20180502
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libclang70
libc.so.6(GLIBC_2.3)
rpmlib(TildeInVersions) <= 4.10.0-1
libgcc_s.so.1(GCC_3.4)
libxml2.so.2
libLLVM-7svn.so(LLVM_7)
libstdc++.so.6
rpmlib(CompressedFileNames) <= 3.0.4-1
libc.so.6(GLIBC_2.1)
rpmlib(PayloadIsLzma) <= 4.4.6-1
libxml2.so.2(LIBXML2_2.4.30)
libstdc++.so.6(GLIBCXX_3.4.11)
/sbin/ldconfig
binutils
libstdc++.so.6(CXXABI_1.3)
libc.so.6
libstdc++.so.6(GLIBCXX_3.4.14)

Content of RPM :
/usr/bin/c-index-test
/usr/bin/clang
/usr/bin/clang++
/usr/bin/clang-7
/usr/bin/clang-check
/usr/bin/clang-cl
/usr/bin/clang-cpp
/usr/bin/clang-format
/usr/bin/clang-func-mapping
/usr/bin/clang-import-test
/usr/bin/clang-offload-bundler
/usr/bin/clang-refactor
/usr/bin/clang-rename
/usr/bin/git-clang-format
/usr/bin/obj2yaml
/usr/bin/sancov
/usr/bin/sanstats
/usr/bin/scan-build
/usr/bin/scan-view
/usr/bin/verify-uselistorder
/usr/bin/yaml2obj
/usr/lib/LLVMgold.so
/usr/lib/clang
/usr/lib/clang/7.0.0
/usr/lib/clang/7.0.0/include
/usr/lib/clang/7.0.0/include/__clang_cuda_builtin_vars.h
/usr/lib/clang/7.0.0/include/__clang_cuda_cmath.h
/usr/lib/clang/7.0.0/include/__clang_cuda_complex_builtins.h
/usr/lib/clang/7.0.0/include/__clang_cuda_device_functions.h
/usr/lib/clang/7.0.0/include/__clang_cuda_intrinsics.h
There is 115 files more in these RPM.