CodeGen: Move ABI option enums to support

Move these out of TargetOptions and into Support to avoid
the dependency on Target. There are similar ABI options
already in Support/CodeGen.h.

Author: arsenm

llvm/include/llvm/Support/CodeGen.h

@@ -50,6 +50,22 @@ namespace llvm {
     };
   }
 
+  namespace FloatABI {
+  enum ABIType {
+    Default, // Target-specific (either soft or hard depending on triple, etc).
+    Soft,    // Soft float.
+    Hard     // Hard float.
+  };
+  }
+
+  enum class EABI {
+    Unknown,
+    Default, // Default means not specified
+    EABI4,   // Target-specific (either 4, 5 or gnu depending on triple).
+    EABI5,
+    GNU
+  };
+
   /// Code generation optimization level.
   enum class CodeGenOptLevel {
     None = 0,      ///< -O0

llvm/include/llvm/Target/TargetOptions.h

@@ -16,6 +16,7 @@
 
 #include "llvm/ADT/FloatingPointMode.h"
 #include "llvm/MC/MCTargetOptions.h"
+#include "llvm/Support/CodeGen.h"
 
 #include <memory>
 
@@ -24,14 +25,6 @@ namespace llvm {
   class MachineFunction;
   class MemoryBuffer;
 
-  namespace FloatABI {
-    enum ABIType {
-      Default, // Target-specific (either soft or hard depending on triple, etc).
-      Soft,    // Soft float.
-      Hard     // Hard float.
-    };
-  }
-
   namespace FPOpFusion {
     enum FPOpFusionMode {
       Fast,     // Enable fusion of FP ops wherever it's profitable.
@@ -70,14 +63,6 @@ namespace llvm {
     None    // Do not use Basic Block Sections.
   };
 
-  enum class EABI {
-    Unknown,
-    Default, // Default means not specified
-    EABI4,   // Target-specific (either 4, 5 or gnu depending on triple).
-    EABI5,
-    GNU
-  };
-
   /// Identify a debugger for "tuning" the debug info.
   ///
   /// The "debugger tuning" concept allows us to present a more intuitive