Move Target{Instr,Register}Info.cpp into lib/CodeGen.

The Target library is not allowed to depend on the large CodeGen
library, but the TRI and TII classes provide abstract interfaces that
require both caller and callee to link to CodeGen.

The implementation files for these classes provide default
implementations of some of the hooks. These methods may need to
reference CodeGen, so they belong in that library.

We already have a number of methods implemented in the
TargetInstrInfoImpl sub-class because of that. I will merge that class
into the parent next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168758 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CMakeLists.txt

@@ -99,9 +99,11 @@ add_llvm_library(LLVMCodeGen
   StrongPHIElimination.cpp
   TailDuplication.cpp
   TargetFrameLoweringImpl.cpp
+  TargetInstrInfo.cpp
   TargetInstrInfoImpl.cpp
   TargetLoweringObjectFileImpl.cpp
   TargetOptionsImpl.cpp
+  TargetRegisterInfo.cpp
   TargetSchedule.cpp
   TwoAddressInstructionPass.cpp
   UnreachableBlockElim.cpp

lib/Target/CMakeLists.txt

@@ -1,14 +1,12 @@
 add_llvm_library(LLVMTarget
   Mangler.cpp
   Target.cpp
-  TargetInstrInfo.cpp
   TargetIntrinsicInfo.cpp
   TargetJITInfo.cpp
   TargetLibraryInfo.cpp
   TargetLoweringObjectFile.cpp
   TargetMachine.cpp
   TargetMachineC.cpp
-  TargetRegisterInfo.cpp
   TargetSubtargetInfo.cpp
   TargetTransformImpl.cpp
   )