Relax requirement from VFP3 to VFP2 where possible.

src/arm/codegen-arm.cc

Index: src/arm/codegen-arm.cc
diff --git a/src/arm/codegen-arm.cc b/src/arm/codegen-arm.cc
index 57fe24b37518153d1523a16e8cbd3bacc236c233..43bf376474560360f1d3fec8877872b65f6831f0 100644
--- a/src/arm/codegen-arm.cc
+++ b/src/arm/codegen-arm.cc
@@ -107,7 +107,7 @@ void ElementsTransitionGenerator::GenerateSmiToDouble(
   //  -- r4    : scratch (elements)
   // -----------------------------------
   Label loop, entry, convert_hole, gc_required, only_change_map, done;
-  bool vfp3_supported = CpuFeatures::IsSupported(VFP3);
+  bool vfp3_supported = CpuFeatures::IsSupported(VFP2);
 
   // Check for empty arrays, which only require a map transition and no changes
   // to the backing store.
@@ -211,7 +211,7 @@ void ElementsTransitionGenerator::GenerateSmiToDouble(
 
   // Normal smi, convert to double and store.
   if (vfp3_supported) {
-    CpuFeatures::Scope scope(VFP3);
+    CpuFeatures::Scope scope(VFP2);
     __ vmov(s0, r9);
     __ vcvt_f64_s32(d0, s0);
     __ vstr(d0, r7, 0);