Fix arm simulator build on Max OS X. For some reason the GCC version

on Mac is more pedantic.

Review URL: http://codereview.chromium.org/1652015

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@4442 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/virtual-frame-arm.cc

@@ -507,6 +507,9 @@ void VirtualFrame::SpillAll() {
       // Fall through.
     case NO_TOS_REGISTERS:
       break;
+    default:
+      UNREACHABLE();
+      break;
   }
   ASSERT(register_allocation_map_ == 0);  // Not yet implemented.
 }

src/arm/virtual-frame-arm.h

@@ -376,8 +376,15 @@ class VirtualFrame : public ZoneObject {
   static const int kPreallocatedElements = 5 + 8;  // 8 expression stack slots.
 
   // 5 states for the top of stack, which can be in memory or in r0 and r1.
-  enum TopOfStack { NO_TOS_REGISTERS, R0_TOS, R1_TOS, R1_R0_TOS, R0_R1_TOS,
-                    TOS_STATES};
+  enum TopOfStack {
+    NO_TOS_REGISTERS,
+    R0_TOS,
+    R1_TOS,
+    R1_R0_TOS,
+    R0_R1_TOS,
+    TOS_STATES
+  };
+
   static const int kMaxTOSRegisters = 2;
 
   static const bool kR0InUse[TOS_STATES];