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56 Commits

Author SHA1 Message Date
Jordan Rose 59e4e1b5fe Add getValueOr to llvm::Optional<T>. 
This takes a single argument convertible to T, and
- if the Optional has a value, returns the existing value,
- otherwise, constructs a T from the argument and returns that.

Inspired by std::experimental::optional from the "Library Fundamentals" C++ TS.

llvm-svn: 218618
 2014-09-29 18:56:08 +00:00
Chandler Carruth 667363b3e3 [C++11] Remove uses of LLVM_HAS_RVALUE_REFERENCES from the unittests. 
llvm-svn: 202583
 2014-03-01 09:36:06 +00:00
David Blaikie db2c7412e4 Only include move-related Optional<T> tests when rvalue references are available. 
llvm-svn: 175730
 2013-02-21 07:58:45 +00:00
David Blaikie 1bcb538c3f Add move ctor/assignment to Optional<T> 
Code review feedback for r175580 by Jordan Rose.

llvm-svn: 175729
 2013-02-21 07:55:39 +00:00
David Blaikie 532aff8cd0 Rename llvm::Optional<T>::Reset to 'reset' as per LLVM naming conventions. 
Code review feedback on r175580 from Jordan Rose.

llvm-svn: 175595
 2013-02-20 06:25:36 +00:00
David Blaikie 77bac3dbcc Allow llvm::Optional to work with types without default constructors. 
This generalizes Optional to require less from the T type by using aligned
storage for backing & placement new/deleting the T into it when necessary.

Also includes unit tests.

llvm-svn: 175580
 2013-02-20 00:26:04 +00:00