Second half of number alloc change accidentally omitted from

last change.
Review URL: http://codereview.chromium.org/2919001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5039 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/codegen-arm.cc

@@ -4870,12 +4870,8 @@ void CodeGenerator::GenerateRandomHeapNumber(
   __ jmp(&heapnumber_allocated);
 
   __ bind(&slow_allocate_heapnumber);
-  // To allocate a heap number, and ensure that it is not a smi, we
-  // call the runtime function FUnaryMinus on 0, returning the double
-  // -0.0. A new, distinct heap number is returned each time.
-  __ mov(r0, Operand(Smi::FromInt(0)));
-  __ push(r0);
-  __ CallRuntime(Runtime::kNumberUnaryMinus, 1);
+  // Allocate a heap number.
+  __ CallRuntime(Runtime::kNumberAlloc, 0);
   __ mov(r4, Operand(r0));
 
   __ bind(&heapnumber_allocated);

src/ia32/codegen-ia32.cc

@@ -6678,11 +6678,8 @@ void CodeGenerator::GenerateRandomHeapNumber(
   __ jmp(&heapnumber_allocated);
 
   __ bind(&slow_allocate_heapnumber);
-  // To allocate a heap number, and ensure that it is not a smi, we
-  // call the runtime function FUnaryMinus on 0, returning the double
-  // -0.0.  A new, distinct heap number is returned each time.
-  __ push(Immediate(Smi::FromInt(0)));
-  __ CallRuntime(Runtime::kNumberUnaryMinus, 1);
+  // Allocate a heap number.
+  __ CallRuntime(Runtime::kNumberAlloc, 0);
   __ mov(edi, eax);
 
   __ bind(&heapnumber_allocated);

src/runtime.cc

@@ -5608,6 +5608,14 @@ static Object* Runtime_NumberUnaryMinus(Arguments args) {
 }
 
 
+static Object* Runtime_NumberAlloc(Arguments args) {
+  NoHandleAllocation ha;
+  ASSERT(args.length() == 0);
+
+  return Heap::NumberFromDouble(9876543210.0);
+}
+
+
 static Object* Runtime_NumberDiv(Arguments args) {
   NoHandleAllocation ha;
   ASSERT(args.length() == 2);

src/x64/codegen-x64.cc

@@ -4664,11 +4664,8 @@ void CodeGenerator::GenerateRandomHeapNumber(
   __ jmp(&heapnumber_allocated);
 
   __ bind(&slow_allocate_heapnumber);
-  // To allocate a heap number, and ensure that it is not a smi, we
-  // call the runtime function FUnaryMinus on 0, returning the double
-  // -0.0.  A new, distinct heap number is returned each time.
-  __ Push(Smi::FromInt(0));
-  __ CallRuntime(Runtime::kNumberUnaryMinus, 1);
+  // Allocate a heap number.
+  __ CallRuntime(Runtime::kNumberAlloc, 0);
   __ movq(rbx, rax);
 
   __ bind(&heapnumber_allocated);