Sink getDwarfRegNum, getLLVMRegNum, getSEHRegNum from TargetRegisterInfo down

to MCRegisterInfo. Also initialize the mapping at construction time.

This patch eliminate TargetRegisterInfo from TargetAsmInfo. It's another step
towards fixing the layering violation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135424 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/LLVMTargetMachine.cpp

@@ -370,7 +370,8 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
   // Install a MachineModuleInfo class, which is an immutable pass that holds
   // all the per-module stuff we're generating, including MCContext.
   TargetAsmInfo *TAI = new TargetAsmInfo(*this);
-  MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(), TAI);
+  MachineModuleInfo *MMI = new MachineModuleInfo(*getMCAsmInfo(),
+                                                 *getRegisterInfo(), TAI);
   PM.add(MMI);
   OutContext = &MMI->getContext(); // Return the MCContext specifically by-ref.