[cfe-commits] PATCH: Make Clang use the last option from "-g" group

[Alexey Samsonov]

Hi!

This change makes Clang driver pass only the last option from "-g" group to
the compiler:
* if it is -g0, no option is passed;
* if it is -gline-tables-only, this option is preserved;
* all other -g* options are substituted with -g.

http://codereview.appspot.com/6243065/

-- 
Alexey Samsonov, MSK
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