James Henderson e2881b3306 [CommandLine] Improve help text for cl::values style options ... In order to make an option value truly optional, both the ValueOptional and an empty-named value are required. This empty-named value appears in the command-line help text, which is not ideal. This change improves the help text for these sort of options in a number of ways: 1) ValueOptional options with an empty-named value now print their help text twice: both without and then with '=<value>' after the name. The latter version then lists the allowed values after it. 2) Empty-named values with no help text in ValueOptional options are not listed in the permitted values. 3) Otherwise empty-named options are printed as =<empty> rather than simply '='. 4) Option values without help text do not have the '-' separator printed. It also tweaks the llvm-symbolizer -functions help text to not print a trailing ':' as that looks bad combined with 1) above. Reviewed by: thopre, ruiu Differential Revision: https://reviews.llvm.org/D57030 llvm-svn: 352750		2019-01-31 13:58:48 +00:00
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CMakeLists.txt	Use itaniumDemangle in llvm-symbolizer	2018-03-07 23:07:34 +00:00
llvm-symbolizer.cpp	[CommandLine] Improve help text for cl::values style options	2019-01-31 13:58:48 +00:00