Split VFP support in VFP2/3

src/arm/code-stubs-arm.cc

Index: src/arm/code-stubs-arm.cc
===================================================================
--- src/arm/code-stubs-arm.cc	(revision 12165)
+++ src/arm/code-stubs-arm.cc	(working copy)
@@ -1058,7 +1058,7 @@
   __ push(lr);
   __ PrepareCallCFunction(0, 2, scratch);
   if (masm->use_eabi_hardfloat()) {
-    CpuFeatures::Scope scope(VFP3);
+    CpuFeatures::Scope scope(VFP2);
     __ vmov(d0, r0, r1);
     __ vmov(d1, r2, r3);
   }
@@ -1070,7 +1070,7 @@
   // Store answer in the overwritable heap number. Double returned in
   // registers r0 and r1 or in d0.
   if (masm->use_eabi_hardfloat()) {
-    CpuFeatures::Scope scope(VFP3);
+    CpuFeatures::Scope scope(VFP2);
     __ vstr(d0,
             FieldMemOperand(heap_number_result, HeapNumber::kValueOffset));
   } else {
@@ -1442,7 +1442,7 @@
     __ push(lr);
     __ PrepareCallCFunction(0, 2, r5);
     if (masm->use_eabi_hardfloat()) {
-      CpuFeatures::Scope scope(VFP3);
+      CpuFeatures::Scope scope(VFP2);
       __ vmov(d0, r0, r1);
       __ vmov(d1, r2, r3);
     }
@@ -3469,7 +3469,7 @@
 
   __ push(lr);
   __ PrepareCallCFunction(0, 1, scratch);
-  if (masm->use_eabi_hardfloat()) {
+  if (masm->use_eabi_hardfloat() && CpuFeatures::IsSupported(VFP3)) {
     __ vmov(d0, d2);
   } else {
     __ vmov(r0, r1, d2);