revert r280432:
authorDehao Chen <dehao@google.com>
Fri, 2 Sep 2016 01:47:13 +0000 (01:47 +0000)
committerDehao Chen <dehao@google.com>
Fri, 2 Sep 2016 01:47:13 +0000 (01:47 +0000)
commit820372c0edfacecae45a30d19929d73fb29f8cd3
tree5ab50a629c4a0195df90a66af2ccce098f23bc54
parent9aec5c3797056b6fba619c81aea07e9e46d67178
revert r280432:

r280432 | dehao | 2016-09-01 16:51:37 -0700 (Thu, 01 Sep 2016) | 9 lines

Explicitly require DominatorTreeAnalysis pass for instsimplify pass.

Summary: DominatorTreeAnalysis is always required by instsimplify.
llvm-svn: 280452
llvm/lib/Transforms/Utils/SimplifyInstructions.cpp