Combine typed and pixel arrays.

src/arm/lithium-codegen-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1115 matching lines @@
 }
 
 
 void LCodeGen::DoJSArrayLength(LJSArrayLength* instr) {
   Register result = ToRegister(instr->result());
   Register array = ToRegister(instr->InputAt(0));
   __ ldr(result, FieldMemOperand(array, JSArray::kLengthOffset));
 }
 
 
-void LCodeGen::DoPixelArrayLength(LPixelArrayLength* instr) {
+void LCodeGen::DoExternalArrayLength(LExternalArrayLength* instr) {
   Register result = ToRegister(instr->result());
   Register array = ToRegister(instr->InputAt(0));
-  __ ldr(result, FieldMemOperand(array, PixelArray::kLengthOffset));
+  __ ldr(result, FieldMemOperand(array, ExternalArray::kLengthOffset));
 }
 
 
 void LCodeGen::DoFixedArrayLength(LFixedArrayLength* instr) {
   Register result = ToRegister(instr->result());
   Register array = ToRegister(instr->InputAt(0));
   __ ldr(result, FieldMemOperand(array, FixedArray::kLengthOffset));
 }
 
 
@@ skipping 1046 matching lines @@
   Register input = ToRegister(instr->InputAt(0));
   Register scratch = scratch0();
 
   __ ldr(result, FieldMemOperand(input, JSObject::kElementsOffset));
   if (FLAG_debug_code) {
     Label done;
     __ ldr(scratch, FieldMemOperand(result, HeapObject::kMapOffset));
     __ LoadRoot(ip, Heap::kFixedArrayMapRootIndex);
     __ cmp(scratch, ip);
     __ b(eq, &done);
-    __ LoadRoot(ip, Heap::kPixelArrayMapRootIndex);
+    __ LoadRoot(ip, Heap::kExternalPixelArrayMapRootIndex);
     __ cmp(scratch, ip);
     __ b(eq, &done);
     __ LoadRoot(ip, Heap::kFixedCOWArrayMapRootIndex);
     __ cmp(scratch, ip);
     __ Check(eq, "Check for fast elements failed.");
     __ bind(&done);
   }
 }
 
 
-void LCodeGen::DoLoadPixelArrayExternalPointer(
-    LLoadPixelArrayExternalPointer* instr) {
+void LCodeGen::DoLoadExternalArrayPointer(
+    LLoadExternalArrayPointer* instr) {
   Register to_reg = ToRegister(instr->result());
   Register from_reg  = ToRegister(instr->InputAt(0));
-  __ ldr(to_reg, FieldMemOperand(from_reg, PixelArray::kExternalPointerOffset));
+  __ ldr(to_reg, FieldMemOperand(from_reg,
+                                 ExternalArray::kExternalPointerOffset));
 }
 
 
 void LCodeGen::DoAccessArgumentsAt(LAccessArgumentsAt* instr) {
   Register arguments = ToRegister(instr->arguments());
   Register length = ToRegister(instr->length());
   Register index = ToRegister(instr->index());
   Register result = ToRegister(instr->result());
 
   // Bailout index is not a valid argument index. Use unsigned check to get
@@ skipping 20 matching lines @@
   __ ldr(result, FieldMemOperand(scratch, FixedArray::kHeaderSize));
 
   // Check for the hole value.
   __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex);
   __ cmp(result, scratch);
   DeoptimizeIf(eq, instr->environment());
 }
 
 
 void LCodeGen::DoLoadPixelArrayElement(LLoadPixelArrayElement* instr) {
-  Register external_elements = ToRegister(instr->external_pointer());
+  Register external_pointer = ToRegister(instr->external_pointer());
   Register key = ToRegister(instr->key());
   Register result = ToRegister(instr->result());
 
   // Load the result.
-  __ ldrb(result, MemOperand(external_elements, key));
+  __ ldrb(result, MemOperand(external_pointer, key));
 }
 
 
 void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->object()).is(r1));
   ASSERT(ToRegister(instr->key()).is(r0));
 
   Handle<Code> ic(Builtins::builtin(Builtins::KeyedLoadIC_Initialize));
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
@@ skipping 631 matching lines @@
   }
 
   if (instr->hydrogen()->NeedsWriteBarrier()) {
     // Compute address of modified element and store it into key register.
     __ add(key, scratch, Operand(FixedArray::kHeaderSize));
     __ RecordWrite(elements, key, value);
   }
 }
 
 
+void LCodeGen::DoStorePixelArrayElement(LStorePixelArrayElement* instr) {
+  Register external_pointer = ToRegister(instr->external_pointer());
+  Register key = ToRegister(instr->key());
+  Register value = ToRegister(instr->value());
+
+  // Clamp the value to [0..255].
+  __ Usat(value, 8, Operand(value));
+  __ strb(value, MemOperand(external_pointer, key, LSL, 0));
+}
+
+
 void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->object()).is(r2));
   ASSERT(ToRegister(instr->key()).is(r1));
   ASSERT(ToRegister(instr->value()).is(r0));
 
   Handle<Code> ic(Builtins::builtin(
       info_->is_strict() ? Builtins::KeyedStoreIC_Initialize_Strict
                          : Builtins::KeyedStoreIC_Initialize));
   CallCode(ic, RelocInfo::CODE_TARGET, instr);
 }
@@ skipping 919 matching lines @@
   ASSERT(!environment->HasBeenRegistered());
   RegisterEnvironmentForDeoptimization(environment);
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal