ARM: Makefile/gyp update allowing better control of ARM specific options.

src/arm/assembler-arm.h

Index: src/arm/assembler-arm.h
diff --git a/src/arm/assembler-arm.h b/src/arm/assembler-arm.h
index 57582b615668784d3d6280a86b802e5d9f8ee3f7..0aecbcdd617be834be75ab95e5939f791aeffe65 100644
--- a/src/arm/assembler-arm.h
+++ b/src/arm/assembler-arm.h
@@ -55,15 +55,15 @@ class CpuFeatures : public AllStatic {
   // is enabled (snapshots must be portable).
   static void Probe();
 
+  // Display target use when compiling.
+  static void PrintTarget();
+
+  // Display features.
+  static void PrintFeatures();
+
   // Check whether a feature is supported by the target CPU.
   static bool IsSupported(CpuFeature f) {
     ASSERT(initialized_);
-    if (f == VFP3 && !FLAG_enable_vfp3) return false;
-    if (f == SUDIV && !FLAG_enable_sudiv) return false;
-    if (f == UNALIGNED_ACCESSES && !FLAG_enable_unaligned_accesses) {
-      return false;
-    }
-    if (f == VFP32DREGS && !FLAG_enable_32dregs) return false;
     return (supported_ & (1u << f)) != 0;
   }