BitTracker.h needs a full definition of MachineInstr, so include the defining file.

Patch by Dean Sturtevant!

Differential Revision: https://reviews.llvm.org/D42907

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324245 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed