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Author SHA1 Message Date
Fangrui Song d0d076fed9 [Driver] Flip the CC1 default of -fdiagnostics-show-option 
The driver enables -fdiagnostics-show-option by default, so flip the CC1
default to reduce the lengths of common CC1 command lines.

This change also makes ParseDiagnosticArgs() consistently enable
-fdiagnostics-show-option by default.
 2020-03-31 21:59:27 -07:00
Daniel Dunbar aa11138543 Basic/Diagnostics: Add an isDefaultMappingAsError method, and switch TextDiagnosticPrinter to use that instead of extracting the current mapping via getDiagnosticLevel, which fixes one class of corner cases w.r.t. printing the "-Werror" diagnostic option marker. 
- The TextDiagnosticPrinter code is still fragile as it is just "reverse engineering" what the diagnostic engine is doing. Not my current priority to fix though.

llvm-svn: 140752
 2011-09-29 01:01:08 +00:00