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

Provides :
libLLVM-6.0-rhel.so
libLLVM-6.0-rhel.so(LLVM_6.0)
libclang.so.6
libclang.so.6(LLVM_6.0)
libclangARCMigrate.so.6
libclangAST.so.6
libclangASTMatchers.so.6
libclangAnalysis.so.6
libclangBasic.so.6
libclangCodeGen.so.6
libclangCrossTU.so.6
libclangDriver.so.6
libclangDynamicASTMatchers.so.6
libclangEdit.so.6
libclangFormat.so.6
libclangFrontend.so.6
libclangFrontendTool.so.6
libclangHandleCXX.so.6
libclangIndex.so.6
libclangLex.so.6
libclangParse.so.6
libclangRewrite.so.6
libclangRewriteFrontend.so.6
libclangSema.so.6
libclangSerialization.so.6
libclangStaticAnalyzerCheckers.so.6
libclangStaticAnalyzerCore.so.6
libclangStaticAnalyzerFrontend.so.6
libclangTooling.so.6
libclangToolingASTDiff.so.6
libclangToolingCore.so.6
libclangToolingRefactor.so.6
llvm-private
llvm-private(x86-32)

Requires :

libpthread.so.0(GLIBC_2.2)
libpthread.so.0(GLIBC_2.12)
libclangStaticAnalyzerCheckers.so.6
libpthread.so.0
libdl.so.2
libclangCodeGen.so.6
rtld(GNU_HASH)
libclangFrontendTool.so.6
libm.so.6
librt.so.1
libclangRewriteFrontend.so.6
libgcc_s.so.1
libz.so.1
libstdc++.so.6(GLIBCXX_3.4.18)
libclangFrontend.so.6
libclangEdit.so.6
libc.so.6(GLIBC_2.1.3)
libclangParse.so.6
libclangAnalysis.so.6
libclangToolingASTDiff.so.6
libstdc++.so.6(CXXABI_1.3.5)
libstdc++.so.6(CXXABI_1.3.3)
libstdc++.so.6(GLIBCXX_3.4.19)
libclangARCMigrate.so.6
libc.so.6(GLIBC_2.2)
libclangToolingRefactor.so.6
libpthread.so.0(GLIBC_2.0)
libc.so.6(GLIBC_2.11)
libstdc++.so.6(GLIBCXX_3.4.17)
libclangFormat.so.6
libclangHandleCXX.so.6
libclangBasic.so.6
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libstdc++.so.6
libclang.so.6
libLLVM-6.0-rhel.so(LLVM_6.0)
libstdc++.so.6(GLIBCXX_3.4.11)
libc.so.6(GLIBC_2.15)
libc.so.6(GLIBC_2.6)
libclangAST.so.6
libc.so.6
libstdc++.so.6(GLIBCXX_3.4.14)
libc.so.6(GLIBC_2.3.4)
libstdc++.so.6(GLIBCXX_3.4)
libclangSerialization.so.6
libclangToolingCore.so.6
libdl.so.2(GLIBC_2.1)
libclangDriver.so.6
libgcc_s.so.1(GLIBC_2.0)
libLLVM-6.0-rhel.so
libstdc++.so.6(GLIBCXX_3.4.15)
libstdc++.so.6(GLIBCXX_3.4.9)
libc.so.6(GLIBC_2.4)
libm.so.6(GLIBC_2.2)
libc.so.6(GLIBC_2.3.3)
libc.so.6(GLIBC_2.2.4)
libclangIndex.so.6
rpmlib(PayloadIsXz) <= 5.2-1
libclangSema.so.6
libpthread.so.0(GLIBC_2.1)
libclangStaticAnalyzerCore.so.6
libclangASTMatchers.so.6
ld-linux.so.2
libclangDynamicASTMatchers.so.6
libc.so.6(GLIBC_2.0)
libz.so.1(ZLIB_1.2.0)
libdl.so.2(GLIBC_2.0)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libc.so.6(GLIBC_2.3)
libm.so.6(GLIBC_2.0)
libclangRewrite.so.6
libgcc_s.so.1(GCC_3.4)
ld-linux.so.2(GLIBC_2.3)
libclangLex.so.6
libclangTooling.so.6
libclangCrossTU.so.6
libc.so.6(GLIBC_2.1)
libclangStaticAnalyzerFrontend.so.6
libm.so.6(GLIBC_2.1)
libgcc_s.so.1(GCC_3.0)
/sbin/ldconfig
libgcc_s.so.1(GCC_3.3)
libstdc++.so.6(CXXABI_1.3)

Content of RPM :
/usr/lib/clang-private/libclang.so
/usr/lib/clang-private/libclang.so.6
/usr/lib/clang-private/libclang.so.6.0
/usr/lib/clang-private/libclangARCMigrate.so
/usr/lib/clang-private/libclangARCMigrate.so.6
/usr/lib/clang-private/libclangARCMigrate.so.6.0.1
/usr/lib/clang-private/libclangAST.so
/usr/lib/clang-private/libclangAST.so.6
/usr/lib/clang-private/libclangAST.so.6.0.1
/usr/lib/clang-private/libclangASTMatchers.so
/usr/lib/clang-private/libclangASTMatchers.so.6
/usr/lib/clang-private/libclangASTMatchers.so.6.0.1
/usr/lib/clang-private/libclangAnalysis.so
/usr/lib/clang-private/libclangAnalysis.so.6
/usr/lib/clang-private/libclangAnalysis.so.6.0.1
/usr/lib/clang-private/libclangBasic.so
/usr/lib/clang-private/libclangBasic.so.6
/usr/lib/clang-private/libclangBasic.so.6.0.1
/usr/lib/clang-private/libclangCodeGen.so
/usr/lib/clang-private/libclangCodeGen.so.6
/usr/lib/clang-private/libclangCodeGen.so.6.0.1
/usr/lib/clang-private/libclangCrossTU.so
/usr/lib/clang-private/libclangCrossTU.so.6
/usr/lib/clang-private/libclangCrossTU.so.6.0.1
/usr/lib/clang-private/libclangDriver.so
/usr/lib/clang-private/libclangDriver.so.6
/usr/lib/clang-private/libclangDriver.so.6.0.1
/usr/lib/clang-private/libclangDynamicASTMatchers.so
/usr/lib/clang-private/libclangDynamicASTMatchers.so.6
/usr/lib/clang-private/libclangDynamicASTMatchers.so.6.0.1
There is 60 files more in these RPM.