Remove all TARGET_[ARM|X86|MIPS] #ifdefs

Two steps forward, one step back towards elimination of the
"#include" build model for target-specific compilers.  This CL
does some restructuring to eliminate all of the TARGET_xxx #ifdefs
and convert them to run-time tests.

Considerable work is still required to fully eliminate the multiple
builds.  In particular, much of the "common" codegen code relies on
macros defined by the target-specific [Arm|X86|Mips]Lir.h include file.

Next step is more restructuring to better isolate target-independent
code generation code.

Change-Id: If6efbde65c48031a48423344d8dc3e2ff2c4ad9d
diff --git a/src/compiler/codegen/arm/Codegen.h b/src/compiler/codegen/arm/Codegen.h
index 22f6157..0890c15 100644
--- a/src/compiler/codegen/arm/Codegen.h
+++ b/src/compiler/codegen/arm/Codegen.h
@@ -14,13 +14,7 @@
  * limitations under the License.
  */
 
-/*
- * This file contains register alloction support and is intended to be
- * included by:
- *
- *        Codegen-$(TARGET_ARCH_VARIANT).c
- *
- */
+/* This file contains register alloction support. */
 
 #include "../../CompilerIR.h"
 
@@ -91,8 +85,19 @@
 
 #endif
 
-extern void oatSetupResourceMasks(LIR* lir);
+extern void oatSetupResourceMasks(CompilationUnit* cUnit, LIR* lir);
 
 extern LIR* oatRegCopyNoInsert(CompilationUnit* cUnit, int rDest, int rSrc);
 
+bool genAddLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genSubLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genAndLong(CompilationUnit* cUnit, RegLocation rlDest,
+                RegLocation rlSrc1, RegLocation rlSrc2);
+bool genOrLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2);
+bool genXorLong(CompilationUnit* cUnit, RegLocation rlDest,
+               RegLocation rlSrc1, RegLocation rlSrc2);
+
 }  // namespace art