Split thumb-related stuff into separate classes.
Step 1: ARMInstructionInfo => {ARM,Thumb}InstructionInfo

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74329 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMTargetAsmInfo.cpp b/lib/Target/ARM/ARMTargetAsmInfo.cpp
index 42b8eae..bf2c14e 100644
--- a/lib/Target/ARM/ARMTargetAsmInfo.cpp
+++ b/lib/Target/ARM/ARMTargetAsmInfo.cpp
@@ -43,7 +43,7 @@
   0,0
 };
 
-ARMDarwinTargetAsmInfo::ARMDarwinTargetAsmInfo(const ARMTargetMachine &TM):
+ARMDarwinTargetAsmInfo::ARMDarwinTargetAsmInfo(const ARMBaseTargetMachine &TM):
   ARMTargetAsmInfo<DarwinTargetAsmInfo>(TM) {
   Subtarget = &TM.getSubtarget<ARMSubtarget>();
 
@@ -55,7 +55,7 @@
   SupportsDebugInformation = true;
 }
 
-ARMELFTargetAsmInfo::ARMELFTargetAsmInfo(const ARMTargetMachine &TM):
+ARMELFTargetAsmInfo::ARMELFTargetAsmInfo(const ARMBaseTargetMachine &TM):
   ARMTargetAsmInfo<ELFTargetAsmInfo>(TM) {
   Subtarget = &TM.getSubtarget<ARMSubtarget>();