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Author SHA1 Message Date
Abhina Sreeskantharajan dedaf78fa7 [SystemZ][z/OS] enable trigraphs by default on z/OS 
This patch enables trigraphs on z/OS.

Reviewed By: hubert.reinterpretcast, fanbo-meng

Differential Revision: https://reviews.llvm.org/D85722
 2020-08-13 16:02:07 -04:00
Richard Smith 4c132e576b Do not warn about whitespace between ??/ trigraph and newline in line comments if trigraphs are disabled in the current language. 
llvm-svn: 300609
 2017-04-18 21:45:04 +00:00
Nico Weber 007215044b Add driver flags -ftrigraphs, -fno-trigraphs. 
-trigraphs is now an alias for -ftrigraphs.  -fno-trigraphs makes it possible
to explicitly disable trigraphs, which couldn't be done before.

  clang -std=c++11 -fno-trigraphs

now builds without GNU extensions, but with trigraphs disabled.  Previously,
trigraphs were only disabled in GNU modes or with -std=c++1z.

Make the new -f flags the cc1 interface too.  This requires changing -trigraphs
to -ftrigraphs in a few cc1 tests.

Related to PR21974.

llvm-svn: 224790
 2014-12-23 22:32:37 +00:00
Richard Smith 4676203011 [C++1z] Implement N3981: Disable trigraphs by default in C++1z mode. 
llvm-svn: 211392
 2014-06-20 19:23:57 +00:00