Enable stub generation using Hydrogen/Lithium (again)

src/arm/assembler-arm.cc

Index: src/arm/assembler-arm.cc
diff --git a/src/arm/assembler-arm.cc b/src/arm/assembler-arm.cc
index 47ea0e20666e2f44621e42959b7094067c43ed79..42990f67240e0ef866e19a3ae455013f1d88c2c5 100644
--- a/src/arm/assembler-arm.cc
+++ b/src/arm/assembler-arm.cc
@@ -85,6 +85,33 @@ static unsigned CpuFeaturesImpliedByCompiler() {
 }
 
 
+int Register::NumAllocatableRegisters() {
+  if (CpuFeatures::IsSupported(VFP2)) {
+    return kMaxNumAllocatableRegisters;
+  } else {
+    return kMaxNumAllocatableRegisters - kGPRsPerNonVFP2Double;
+  }
+}
+
+
+int DoubleRegister::NumAllocatableRegisters() {
+  if (CpuFeatures::IsSupported(VFP2)) {
+    return DwVfpRegister::kMaxNumAllocatableRegisters;
+  } else {
+    return SoftFloatRegister::kMaxNumAllocatableRegisters;
+  }
+}
+
+
+const char* DoubleRegister::AllocationIndexToString(int index) {
+  if (CpuFeatures::IsSupported(VFP2)) {
+    return DwVfpRegister::AllocationIndexToString(index);
+  } else {
+    return SoftFloatRegister::AllocationIndexToString(index);
+  }
+}
+
+
 void CpuFeatures::Probe() {
   unsigned standard_features = static_cast<unsigned>(
       OS::CpuFeaturesImpliedByPlatform()) | CpuFeaturesImpliedByCompiler();