Turns out, there seem to be options that MAY produce such a binary... but clang-4.0 (from svn) crashes on linking:
1. <eof> parser at end of file
2. Code generation
3. Running pass 'Function Pass Manager' on module '/mnt/3tb-secure/tmp/Ethereum/ethash-gcn/wolf-cn-clang.cl'.
4. Running pass 'SI Fix SGPR copies' on function '@cn0'
clang-4.0: error: unable to execute command: Segmentation fault (core dumped)
clang-4.0: error: clang frontend command failed due to signal (use -v to see invocation)
clang version 4.0.0 (trunk 281716)
Target: amdgcn-fiji--
Thread model: posix
InstalledDir: /usr/bin
clang-4.0: note: diagnostic msg: PLEASE submit a bug report to http://llvm.org/bugs/ and include the crash backtrace, preprocessed source, and associated run script.
clang-4.0: note: diagnostic msg:
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PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-4.0: note: diagnostic msg: /tmp/wolf-cn-clang-026d14.cl
clang-4.0: note: diagnostic msg: /tmp/wolf-cn-clang-026d14.sh
clang-4.0: note: diagnostic msg:
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