Relax requirement from VFP3 to VFP2 where possible.

src/arm/full-codegen-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 659 matching lines @@
   } else {
     if (false_label_ != fall_through_) __ b(false_label_);
   }
 }
 
 
 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());
   } else {
     // Call the runtime to find the boolean value of the source and then
     // translate it into control flow to the pair of labels.
     __ push(result_register());
     __ CallRuntime(Runtime::kToBool, 1);
     __ LoadRoot(ip, Heap::kFalseValueRootIndex);
     __ cmp(r0, ip);
@@ skipping 2356 matching lines @@
   __ bind(&slow_allocate_heapnumber);
   // Allocate a heap number.
   __ CallRuntime(Runtime::kNumberAlloc, 0);
   __ mov(r4, Operand(r0));
 
   __ bind(&heapnumber_allocated);
 
   // 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));
     __ orr(r1, r1, Operand(0x300000));
     // Move 0x41300000xxxxxxxx (x = random bits) to VFP.
     __ vmov(d7, r0, r1);
     // Move 0x4130000000000000 to VFP.
     __ mov(r0, Operand(0, RelocInfo::NONE));
     __ vmov(d8, r0, r1);
     // Subtract and store the result in the heap number.
@@ skipping 102 matching lines @@
   context()->Plug(r0);
 }
 
 
 void FullCodeGenerator::EmitMathPow(CallRuntime* expr) {
   // Load the arguments on the stack and call the runtime function.
   ZoneList<Expression*>* args = expr->arguments();
   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 {
     __ CallRuntime(Runtime::kMath_pow, 2);
   }
   context()->Plug(r0);
 }
 
 
 void FullCodeGenerator::EmitSetValueOf(CallRuntime* expr) {
@@ skipping 1384 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM