[CodeGenPrepare] Hoist all getSubtargetImpl calls to the beginning of the pass

Differential Revision: https://reviews.llvm.org/D29456



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294301 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed