Remove stub call in non-VFP3 code path of external array load.

KeyedLoadStubCompiler::GenerateLoadExternalArray is tail-calling a stub, which it is not allowed to, because its major key is higher than InstanceOf. Instead of changing the major key I decided to provide an inline implementation.

TEST=test-api/ExternalArrays with --noenable-vfp3

R=danno@chromium.org

Review URL: http://codereview.chromium.org/7060007

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8002 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/arm/code-stubs-arm.cc

@@ -538,6 +538,8 @@ void FloatingPointHelper::ConvertIntToDouble(MacroAssembler* masm,
                                              Register scratch2,
                                              SwVfpRegister single_scratch) {
   ASSERT(!int_scratch.is(scratch2));
+  ASSERT(!int_scratch.is(dst1));
+  ASSERT(!int_scratch.is(dst2));
 
   Label done;
 

src/arm/stub-cache-arm.cc

@@ -3577,8 +3577,21 @@ void KeyedLoadStubCompiler::GenerateLoadExternalArray(
       __ vstr(d0, r3, HeapNumber::kValueOffset);
       __ Ret();
     } else {
-      WriteInt32ToHeapNumberStub stub(value, r0, r3);
+      Register dst1 = r1;
-      __ TailCallStub(&stub);
+      Register dst2 = r3;
+      FloatingPointHelper::Destination dest =
+          FloatingPointHelper::kCoreRegisters;
+      FloatingPointHelper::ConvertIntToDouble(masm,
+                                              value,
+                                              dest,
+                                              d0,
+                                              dst1,
+                                              dst2,
+                                              r9,
+                                              s0);
+      __ str(dst1, FieldMemOperand(r0, HeapNumber::kMantissaOffset));
+      __ str(dst2, FieldMemOperand(r0, HeapNumber::kExponentOffset));
+      __ Ret();
     }
   } else if (array_type == kExternalUnsignedIntArray) {
     // The test is different for unsigned int values. Since we need