Eric Fiselier 347a1cc221 Revert r289727 due to PR31384
This patch reverts the changes to tuple which fixed construction from
types derived from tuple. It breaks the code mentioned in llvm.org/PR31384.
I'll follow this commit up with a test case.

llvm-svn: 289773
2016-12-15 06:34:54 +00:00
..