Merging r311835:

------------------------------------------------------------------------
r311835 | dhinton | 2017-08-26 14:08:51 -0700 (Sat, 26 Aug 2017) | 12 lines

[Dominators] Remove redundant explicit template instantiation.

Summary:
Remove redundant explicit template instantiation.

This was reported by Andrew Kelley building release_50 with gcc7.2.0 on MacOS: duplicate symbol llvm::DominatorTreeBase.

Reviewers: kuhar, andrewrk, davide, hans

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D37185
------------------------------------------------------------------------

llvm-svn: 312014

llvm/lib/Analysis/PostDominators.cpp

@@ -23,8 +23,6 @@ using namespace llvm;
 
 #define DEBUG_TYPE "postdomtree"
 
-template class llvm::DominatorTreeBase<BasicBlock, true>; // PostDomTreeBase
-
 //===----------------------------------------------------------------------===//
 //  PostDominatorTree Implementation
 //===----------------------------------------------------------------------===//