llvm dev - Sep 2017 - unsupported option '-fsanitize=dataflow' for target 'i386-unknown-linux-gnu'

While attempting to run DataFlowSanitizer for 32 bit target (-m32), I
received the following error:

unsupported option '-fsanitize=dataflow' for target
'i386-unknown-linux-gnu'

Does it mean that DFSan doesn't support 32 bit memory model?

-- 

Thanks & Regards,
Dipanjan
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