Create stub and runtime function for ia32 full-codegen array literal element initialization.

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
diff --git a/src/ia32/code-stubs-ia32.cc b/src/ia32/code-stubs-ia32.cc
index 7b6eb8faf95cebdc0b61452cdef150359e050390..ba5a7b87456a7d19391c53356aea04ae53bdfc9b 100644
--- a/src/ia32/code-stubs-ia32.cc
+++ b/src/ia32/code-stubs-ia32.cc
@@ -6782,6 +6782,8 @@ struct AheadOfTimeWriteBarrierStubList kAheadOfTime[] = {
   // ElementsTransitionGenerator::GenerateDoubleToObject
   { eax, edx, esi, EMIT_REMEMBERED_SET},
   { edx, eax, edi, EMIT_REMEMBERED_SET},
+  // StoreArrayLiteralElementStub::Generate
+  { ebx, eax, ecx, EMIT_REMEMBERED_SET},
   // Null termination.
   { no_reg, no_reg, no_reg, EMIT_REMEMBERED_SET}
 };
@@ -7024,6 +7026,93 @@ void RecordWriteStub::CheckNeedsToInformIncrementalMarker(
   // Fall through when we need to inform the incremental marker.
 }
 
+
+void StoreArrayLiteralElementStub::Generate(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- eax    : element value to store
+  //  -- ebx    : array literal
+  //  -- edi    : map of array literal
+  //  -- ecx    : element index as smi
+  //  -- edx    : array literal index in function
+  //  -- esp[0] : return address
+  // -----------------------------------
+
+  Label element_done;
+  Label double_elements;
+  Label smi_element;
+  Label slow_elements;
+  Label slow_elements_from_double;
+  Label fast_elements;
+
+  if (!FLAG_trace_elements_transitions) {
+    __ CheckFastElements(edi, &double_elements);
+
+    // FAST_SMI_ONLY_ELEMENTS or FAST_ELEMENTS
+    __ JumpIfSmi(eax, &smi_element);
+    __ CheckFastSmiOnlyElements(edi, &fast_elements, Label::kNear);
+
+    // Store into the array literal requires a elements transition. Call into
+    // the runtime.
+  }
+
+  __ bind(&slow_elements);
+  __ pop(edi);  // Pop return address and remember to put back later for tail
+                // call.
+  __ push(ebx);
+  __ push(ecx);
+  __ push(eax);
+  __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset));
+  __ push(FieldOperand(ebx, JSFunction::kLiteralsOffset));
+  __ push(edx);
+  __ push(edi);  // Return return address so that tail call returns to right
+                 // place.
+  __ TailCallRuntime(Runtime::kStoreArrayLiteralElement, 5, 1);
+
+  if (!FLAG_trace_elements_transitions) {
+    // Array literal has ElementsKind of FAST_DOUBLE_ELEMENTS.
+    __ bind(&double_elements);
+
+    __ push(edx);
+    __ mov(edx, FieldOperand(ebx, JSObject::kElementsOffset));
+    __ StoreNumberToDoubleElements(eax,
+                                   edx,
+                                   ecx,
+                                   edi,
+                                   xmm0,
+                                   &slow_elements_from_double,
+                                   false);
+    __ pop(edx);
+    __ jmp(&element_done);
+
+    __ bind(&slow_elements_from_double);
+    __ pop(edx);
+    __ jmp(&slow_elements);
+
+    // Array literal has ElementsKind of FAST_ELEMENTS and value is an object.
+    __ bind(&fast_elements);
+    __ mov(ebx, FieldOperand(ebx, JSObject::kElementsOffset));
+    __ lea(ecx, FieldOperand(ebx, ecx, times_half_pointer_size,
+                             FixedArrayBase::kHeaderSize));
+    __ mov(Operand(ecx, 0), eax);
+    // Update the write barrier for the array store.
+    __ RecordWrite(ebx, ecx, eax,
+                   kDontSaveFPRegs,
+                   EMIT_REMEMBERED_SET,
+                   OMIT_SMI_CHECK);
+    __ jmp(&element_done);
+
+    // Array literal has ElementsKind of FAST_SMI_ONLY_ELEMENTS or
+    // FAST_ELEMENTS, and value is Smi.
+    __ bind(&smi_element);
+    __ mov(ebx, FieldOperand(ebx, JSObject::kElementsOffset));
+    __ mov(FieldOperand(ebx, ecx, times_half_pointer_size,
+                        FixedArrayBase::kHeaderSize), eax);
+    // Fall through
+    __ bind(&element_done);
+    __ ret(0);
+  }
+}
+
 #undef __
 
 } }  // namespace v8::internal