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Author SHA1 Message Date
David Majnemer 8ef921a48b Frontend: Define __EXCEPTIONS if -fexceptions is passed 
GCC defines __EXCEPTIONS, regardless of language mode, if -fexceptions
is passed.  We should do the same.

This fixes PR21358.

llvm-svn: 220714
 2014-10-27 20:02:19 +00:00
John McCall 9b0a7cea0f Make -fobjc-nonfragile-abi the -cc1 default, since it's the 
increasingly prevailing case to the point that new features
like ARC don't even support the fragile ABI anymore.

This required a little bit of reshuffling with exceptions
because a check was assuming that ObjCNonFragileABI was
only being set in ObjC mode, and that's actually a bit
obnoxious to do.

Most, though, it involved a perl script to translate a ton
of test cases.

Mostly no functionality change for driver users, although
there are corner cases with disabling language-specific
exceptions that we should handle more correctly now.

llvm-svn: 140957
 2011-10-02 01:16:38 +00:00
Douglas Gregor b63ab9477c Only predefine the __EXCEPTIONS macro if C++ exceptions are turned on. 
Only predefine the OBJC_ZEROCOST_EXCEPTIONS macro if Objective-C
exceptions are turned on. Fixes PR10910.

llvm-svn: 139496
 2011-09-12 15:17:19 +00:00