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Author SHA1 Message Date
Richard Smith 8c8fb80490 Improve diagnostics for bad -std= flag. 
Don't list deprecated -std= values (c++0x etc). Only produce one line of output
per standard, even if we know it by multiple names.

In passing, add missing -std=gnu++03 alias (supported by GCC), and add new
spelling '-std=cl1.0' for OpenCL 1.0 for consistency with the other values,
with the same meaning as the preexisting '-std=cl'.

llvm-svn: 301507
 2017-04-27 01:17:05 +00:00
Richard Smith c91daf1cf9 [Driver] Report available language standards on user error 
In case user did not provide valid standard name for -std option, available
values (with short description) will be reported.

Patch by Paweł Żukowski!

llvm-svn: 295113
 2017-02-14 22:44:20 +00:00