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3 Commits

Author SHA1 Message Date
Chandler Carruth
869b0d1406 [ADT] Add a remarkbly useful little helper routine to ArrayRef for 
checking whether the ArrayRef is equal to an explicit list of arguments.

This is particularly easy to implement even without variadic templates
because ArrayRef happens to be homogeneously typed. As a consequence we
can use a "clever" wrapper type and default arguments to capture in
a single method many arguments as well as *how many* arguments the user
specified.

Thanks to Dave Blaikie for helping me pull together this little helper.
Suggestions for how to improve or generalize it are of course welcome.
I'll be using it immediately in my follow-up patch. =D

llvm-svn: 214041
 2014-07-27 01:11:19 +00:00
David Majnemer
410442b39d ADT: Add a drop_back() helper to ArrayRef 
The slice(N, M) interface is powerful but not concise when wanting to
drop a few elements off of an ArrayRef, fix this by adding a drop_back
method.

llvm-svn: 212370
 2014-07-05 06:12:30 +00:00
Nick Kledzik
d2da6e7c22 Fix layering StringRef copy using BumpPtrAllocator. 
Now to copy a string into a BumpPtrAllocator and get a StringRef to the copy:

   StringRef myCopy = myStr.copy(myAllocator);
   

llvm-svn: 200885
 2014-02-05 22:22:56 +00:00