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2015 Jan 23
2
[LLVMdev] Using cl::ZeroOrMore more pervasively with the cl::opt class
All,
Is there any particular reason we don't use cl::ZeroOrMore more
pervasively with the cl::opt class of command-line options?
1. Some of llvm's optimizations are enabled/disabled by llvm command-line
options. Passing these options to our build system via CFF and CXXF
result in redundant CL options. If the CL option is a cl::opt which
defaults to cl::Optional, a warning is emitted. In turn, our build system
bails on these type of warnings.
2. We have internal meta flags (similar to -Ofast) that expand to multiple
llvm CL flags. If this type of flag expands,...