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Author SHA1 Message Date
John McCall 03107a4ef0 Add support for __builtin_{add,sub,mul}_overflow. 
Patch by David Grayson!

llvm-svn: 251651
 2015-10-29 20:48:01 +00:00
Rafael Espindola ff7cea8c1a Don't pass -O0 to clang_cc1, it is the default. 
llvm-svn: 189910
 2013-09-04 04:12:25 +00:00
Michael Gottesman 930ecdb77b [checked-arithmetic builtins] Added builtins to enable users to perform checked-arithmetic in c. 
This will enable users in security critical applications to perform
checked-arithmetic in a fast safe manner that is amenable to c.

Tests/an update to Language Extensions is included as well.

rdar://13421498.

llvm-svn: 184497
 2013-06-20 23:28:10 +00:00