This functionality is not available in LLVM trunk and breaks the compilation of
Polly. This patch fixes the compilation, but may not be enough to recover all
functionality.
llvm-svn: 153318
This allows us to enable -enable-iv-rewrite by default and releases LLVM from
the burdon to keep that feature. This is an intermediate step. We plan to soon
remove the need for rewritten induction variables entirely.
llvm-svn: 150481