MIPS: Hydrogenize (and share) StoreField except heapobject (for now).

Port r22909 (df25caa5)

BUG=
R=gergely.kis@imgtec.com

Review URL: https://codereview.chromium.org/447673003

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22930 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mips/stub-cache-mips.cc

@@ -593,11 +593,7 @@ void NamedStoreHandlerCompiler::GenerateStoreField(
 
   FieldIndex index = lookup->GetFieldIndex();
 
-  Representation representation = lookup->representation();
-  DCHECK(!representation.IsNone());
-  if (representation.IsSmi()) {
-    __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (representation.IsHeapObject()) {
+  DCHECK(lookup->representation().IsHeapObject());
   __ JumpIfSmi(value_reg, miss_label);
   HeapType* field_type = lookup->GetFieldType();
   HeapType::Iterator<Map> it = field_type->Classes();
@@ -617,61 +613,20 @@ void NamedStoreHandlerCompiler::GenerateStoreField(
     }
     __ bind(&do_store);
   }
-  } else if (representation.IsDouble()) {
-    // Load the double storage.
-    if (index.is_inobject()) {
-      __ lw(scratch1, FieldMemOperand(receiver_reg, index.offset()));
-    } else {
-      __ lw(scratch1,
-            FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-      __ lw(scratch1, FieldMemOperand(scratch1, index.offset()));
-    }
 
-    // Store the value into the storage.
-    Label do_store, heap_number;
-    __ JumpIfNotSmi(value_reg, &heap_number);
-    __ SmiUntag(scratch2, value_reg);
-    __ mtc1(scratch2, f6);
-    __ cvt_d_w(f4, f6);
-    __ jmp(&do_store);
-
-    __ bind(&heap_number);
-    __ CheckMap(value_reg, scratch2, Heap::kHeapNumberMapRootIndex,
-                miss_label, DONT_DO_SMI_CHECK);
-    __ ldc1(f4, FieldMemOperand(value_reg, HeapNumber::kValueOffset));
-
-    __ bind(&do_store);
-    __ sdc1(f4, FieldMemOperand(scratch1, HeapNumber::kValueOffset));
-    // Return the value (register v0).
-    DCHECK(value_reg.is(a0));
-    __ Ret(USE_DELAY_SLOT);
-    __ mov(v0, a0);
-    return;
-  }
-
-  // TODO(verwaest): Share this code as a code stub.
-  SmiCheck smi_check = representation.IsTagged()
-      ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
   if (index.is_inobject()) {
     // Set the property straight into the object.
     __ sw(value_reg, FieldMemOperand(receiver_reg, index.offset()));
 
-    if (!representation.IsSmi()) {
     // Skip updating write barrier if storing a smi.
     __ JumpIfSmi(value_reg, &exit);
 
     // Update the write barrier for the array address.
     // Pass the now unused name_reg as a scratch register.
     __ mov(name_reg, value_reg);
-      __ RecordWriteField(receiver_reg,
-                          index.offset(),
-                          name_reg,
-                          scratch1,
-                          kRAHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
+    __ RecordWriteField(receiver_reg, index.offset(), name_reg, scratch1,
+                        kRAHasNotBeenSaved, kDontSaveFPRegs,
+                        EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
   } else {
     // Write to the properties array.
     // Get the properties array.
@@ -679,22 +634,15 @@ void NamedStoreHandlerCompiler::GenerateStoreField(
           FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
     __ sw(value_reg, FieldMemOperand(scratch1, index.offset()));
 
-    if (!representation.IsSmi()) {
     // Skip updating write barrier if storing a smi.
     __ JumpIfSmi(value_reg, &exit);
 
     // Update the write barrier for the array address.
     // Ok to clobber receiver_reg and name_reg, since we return.
     __ mov(name_reg, value_reg);
-      __ RecordWriteField(scratch1,
-                          index.offset(),
-                          name_reg,
-                          receiver_reg,
-                          kRAHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
+    __ RecordWriteField(scratch1, index.offset(), name_reg, receiver_reg,
+                        kRAHasNotBeenSaved, kDontSaveFPRegs,
+                        EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
   }
 
   // Return the value (register v0).

src/mips64/stub-cache-mips64.cc

@@ -597,11 +597,7 @@ void NamedStoreHandlerCompiler::GenerateStoreField(
 
   FieldIndex index = lookup->GetFieldIndex();
 
-  Representation representation = lookup->representation();
-  DCHECK(!representation.IsNone());
-  if (representation.IsSmi()) {
-    __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (representation.IsHeapObject()) {
+  DCHECK(lookup->representation().IsHeapObject());
   __ JumpIfSmi(value_reg, miss_label);
   HeapType* field_type = lookup->GetFieldType();
   HeapType::Iterator<Map> it = field_type->Classes();
@@ -621,61 +617,20 @@ void NamedStoreHandlerCompiler::GenerateStoreField(
     }
     __ bind(&do_store);
   }
-  } else if (representation.IsDouble()) {
-    // Load the double storage.
-    if (index.is_inobject()) {
-      __ ld(scratch1, FieldMemOperand(receiver_reg, index.offset()));
-    } else {
-      __ ld(scratch1,
-            FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-      __ ld(scratch1, FieldMemOperand(scratch1, index.offset()));
-    }
 
-    // Store the value into the storage.
-    Label do_store, heap_number;
-    __ JumpIfNotSmi(value_reg, &heap_number);
-    __ SmiUntag(scratch2, value_reg);
-    __ mtc1(scratch2, f6);
-    __ cvt_d_w(f4, f6);
-    __ jmp(&do_store);
-
-    __ bind(&heap_number);
-    __ CheckMap(value_reg, scratch2, Heap::kHeapNumberMapRootIndex,
-                miss_label, DONT_DO_SMI_CHECK);
-    __ ldc1(f4, FieldMemOperand(value_reg, HeapNumber::kValueOffset));
-
-    __ bind(&do_store);
-    __ sdc1(f4, FieldMemOperand(scratch1, HeapNumber::kValueOffset));
-    // Return the value (register v0).
-    DCHECK(value_reg.is(a0));
-    __ Ret(USE_DELAY_SLOT);
-    __ mov(v0, a0);
-    return;
-  }
-
-  // TODO(verwaest): Share this code as a code stub.
-  SmiCheck smi_check = representation.IsTagged()
-      ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
   if (index.is_inobject()) {
     // Set the property straight into the object.
     __ sd(value_reg, FieldMemOperand(receiver_reg, index.offset()));
 
-    if (!representation.IsSmi()) {
     // Skip updating write barrier if storing a smi.
     __ JumpIfSmi(value_reg, &exit);
 
     // Update the write barrier for the array address.
     // Pass the now unused name_reg as a scratch register.
     __ mov(name_reg, value_reg);
-      __ RecordWriteField(receiver_reg,
-                          index.offset(),
-                          name_reg,
-                          scratch1,
-                          kRAHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
+    __ RecordWriteField(receiver_reg, index.offset(), name_reg, scratch1,
+                        kRAHasNotBeenSaved, kDontSaveFPRegs,
+                        EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
   } else {
     // Write to the properties array.
     // Get the properties array.
@@ -683,22 +638,15 @@ void NamedStoreHandlerCompiler::GenerateStoreField(
           FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
     __ sd(value_reg, FieldMemOperand(scratch1, index.offset()));
 
-    if (!representation.IsSmi()) {
     // Skip updating write barrier if storing a smi.
     __ JumpIfSmi(value_reg, &exit);
 
     // Update the write barrier for the array address.
     // Ok to clobber receiver_reg and name_reg, since we return.
     __ mov(name_reg, value_reg);
-      __ RecordWriteField(scratch1,
-                          index.offset(),
-                          name_reg,
-                          receiver_reg,
-                          kRAHasNotBeenSaved,
-                          kDontSaveFPRegs,
-                          EMIT_REMEMBERED_SET,
-                          smi_check);
-    }
+    __ RecordWriteField(scratch1, index.offset(), name_reg, receiver_reg,
+                        kRAHasNotBeenSaved, kDontSaveFPRegs,
+                        EMIT_REMEMBERED_SET, OMIT_SMI_CHECK);
   }
 
   // Return the value (register v0).