Fix the --noinline-new flag on ARM so that it forces us into C++ code...

src/arm/ic-arm.cc

Index: src/arm/ic-arm.cc
===================================================================
--- src/arm/ic-arm.cc	(revision 5655)
+++ src/arm/ic-arm.cc	(working copy)
@@ -1410,9 +1410,11 @@
 
     __ bind(&box_int);
     // Allocate a HeapNumber for the result and perform int-to-double
-    // conversion. Use r0 for result as key is not needed any more.
+    // conversion. Use r0 for result as key is not needed any more if
+    // the allocation succeeds.
     __ LoadRoot(r6, Heap::kHeapNumberMapRootIndex);
-    __ AllocateHeapNumber(r0, r3, r4, r6, &slow);
+    __ AllocateHeapNumber(r5, r3, r4, r6, &slow);
+    __ mov(r0, r5);
 
     if (CpuFeatures::IsSupported(VFP3)) {
       CpuFeatures::Scope scope(VFP3);