Clean ups, and taught the instruction selector about immediate forms


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19816 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Alpha/AlphaTargetMachine.h b/lib/Target/Alpha/AlphaTargetMachine.h
index 2eb1e21..75d1353 100644
--- a/lib/Target/Alpha/AlphaTargetMachine.h
+++ b/lib/Target/Alpha/AlphaTargetMachine.h
@@ -1,4 +1,4 @@
-//===-- AlphaTargetMachine.h - Define TargetMachine for PowerPC -*- C++ -*-=//
+//===-- AlphaTargetMachine.h - Define TargetMachine for Alpha -*- C++ -*-----=//
 // 
 //                     The LLVM Compiler Infrastructure
 //