Remove the use of the subtarget in MCCodeEmitter creation and
update all ports accordingly. Required a couple of small rewrites
in handling subtarget features during creation in PPC.

llvm-svn: 231861
diff --git a/llvm/lib/Target/X86/X86MCInstLower.cpp b/llvm/lib/Target/X86/X86MCInstLower.cpp
index 6af59d4..cd3076d 100644
--- a/llvm/lib/Target/X86/X86MCInstLower.cpp
+++ b/llvm/lib/Target/X86/X86MCInstLower.cpp
@@ -77,8 +77,8 @@
   X86AsmPrinter::StackMapShadowTracker::startFunction(MachineFunction &F) {
     MF = &F;
     CodeEmitter.reset(TM.getTarget().createMCCodeEmitter(
-        *MF->getSubtarget().getInstrInfo(), *MF->getSubtarget().getRegisterInfo(),
-        MF->getSubtarget(), MF->getContext()));
+        *MF->getSubtarget().getInstrInfo(),
+        *MF->getSubtarget().getRegisterInfo(), MF->getContext()));
   }
 
   void X86AsmPrinter::StackMapShadowTracker::count(MCInst &Inst,