Relax requirement from VFP3 to VFP2 where possible.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
diff --git a/src/arm/full-codegen-arm.cc b/src/arm/full-codegen-arm.cc
index f55956cd7f4fa1084ea0e082a672ff4e2f5d7b2c..aa3fcb0b1ddd08df6a09b601b0c662bad7876ae2 100644
--- a/src/arm/full-codegen-arm.cc
+++ b/src/arm/full-codegen-arm.cc
@@ -677,7 +677,7 @@ void FullCodeGenerator::DoTest(Expression* condition,
                                Label* if_true,
                                Label* if_false,
                                Label* fall_through) {
-  if (CpuFeatures::IsSupported(VFP3)) {
+  if (CpuFeatures::IsSupported(VFP2)) {
     ToBooleanStub stub(result_register());
     __ CallStub(&stub);
     __ tst(result_register(), result_register());
@@ -3054,13 +3054,13 @@ void FullCodeGenerator::EmitRandomHeapNumber(CallRuntime* expr) {
   // Convert 32 random bits in r0 to 0.(32 random bits) in a double
   // by computing:
   // ( 1.(20 0s)(32 random bits) x 2^20 ) - (1.0 x 2^20)).
-  if (CpuFeatures::IsSupported(VFP3)) {
+  if (CpuFeatures::IsSupported(VFP2)) {
     __ PrepareCallCFunction(1, r0);
     __ ldr(r0, ContextOperand(context_register(), Context::GLOBAL_INDEX));
     __ ldr(r0, FieldMemOperand(r0, GlobalObject::kGlobalContextOffset));
     __ CallCFunction(ExternalReference::random_uint32_function(isolate()), 1);
 
-    CpuFeatures::Scope scope(VFP3);
+    CpuFeatures::Scope scope(VFP2);
     // 0x41300000 is the top half of 1.0 x 2^20 as a double.
     // Create this constant using mov/orr to avoid PC relative load.
     __ mov(r1, Operand(0x41000000));
@@ -3183,7 +3183,7 @@ void FullCodeGenerator::EmitMathPow(CallRuntime* expr) {
   ASSERT(args->length() == 2);
   VisitForStackValue(args->at(0));
   VisitForStackValue(args->at(1));
-  if (CpuFeatures::IsSupported(VFP3)) {
+  if (CpuFeatures::IsSupported(VFP2)) {
     MathPowStub stub(MathPowStub::ON_STACK);
     __ CallStub(&stub);
   } else {