Implement in-heap backing store for typed arrays.

src/ia32/lithium-codegen-ia32.cc

Index: src/ia32/lithium-codegen-ia32.cc
diff --git a/src/ia32/lithium-codegen-ia32.cc b/src/ia32/lithium-codegen-ia32.cc
index 86118ebf6bdbeeb185b7aec0a762389dcc9da356..8f157f277ea0386fc102eb7aafec530a4668bf0d 100644
--- a/src/ia32/lithium-codegen-ia32.cc
+++ b/src/ia32/lithium-codegen-ia32.cc
@@ -3415,7 +3415,8 @@ void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) {
       elements_kind,
       0,
       instr->additional_index()));
-  if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) {
+  if (elements_kind == EXTERNAL_FLOAT_ELEMENTS ||
+      elements_kind == FLOAT32_ELEMENTS) {
     if (CpuFeatures::IsSupported(SSE2)) {
       CpuFeatureScope scope(masm(), SSE2);
       XMMRegister result(ToDoubleRegister(instr->result()));
@@ -3424,7 +3425,8 @@ void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) {
     } else {
       X87Mov(ToX87Register(instr->result()), operand, kX87FloatOperand);
     }
-  } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) {
+  } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS ||
+             elements_kind == FLOAT64_ELEMENTS) {
     if (CpuFeatures::IsSupported(SSE2)) {
       CpuFeatureScope scope(masm(), SSE2);
       __ movsd(ToDoubleRegister(instr->result()), operand);
@@ -3435,22 +3437,29 @@ void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) {
     Register result(ToRegister(instr->result()));
     switch (elements_kind) {
       case EXTERNAL_BYTE_ELEMENTS:
+      case INT8_ELEMENTS:
         __ movsx_b(result, operand);
         break;
       case EXTERNAL_PIXEL_ELEMENTS:
       case EXTERNAL_UNSIGNED_BYTE_ELEMENTS:
+      case UINT8_ELEMENTS:
+      case UINT8_CLAMPED_ELEMENTS:
         __ movzx_b(result, operand);
         break;
       case EXTERNAL_SHORT_ELEMENTS:
+      case INT16_ELEMENTS:
         __ movsx_w(result, operand);
         break;
       case EXTERNAL_UNSIGNED_SHORT_ELEMENTS:
+      case UINT16_ELEMENTS:
         __ movzx_w(result, operand);
         break;
       case EXTERNAL_INT_ELEMENTS:
+      case INT32_ELEMENTS:
         __ mov(result, operand);
         break;
       case EXTERNAL_UNSIGNED_INT_ELEMENTS:
+      case UINT32_ELEMENTS:
         __ mov(result, operand);
         if (!instr->hydrogen()->CheckFlag(HInstruction::kUint32)) {
           __ test(result, Operand(result));
@@ -3459,6 +3468,8 @@ void LCodeGen::DoLoadKeyedExternalArray(LLoadKeyed* instr) {
         break;
       case EXTERNAL_FLOAT_ELEMENTS:
       case EXTERNAL_DOUBLE_ELEMENTS:
+      case FLOAT32_ELEMENTS:
+      case FLOAT64_ELEMENTS:
       case FAST_SMI_ELEMENTS:
       case FAST_ELEMENTS:
       case FAST_DOUBLE_ELEMENTS:
@@ -3531,7 +3542,7 @@ void LCodeGen::DoLoadKeyedFixedArray(LLoadKeyed* instr) {
 
 
 void LCodeGen::DoLoadKeyed(LLoadKeyed* instr) {
-  if (instr->is_external()) {
+  if (instr->is_external() || instr->is_fixed_typed_array()) {
     DoLoadKeyedExternalArray(instr);
   } else if (instr->hydrogen()->representation().IsDouble()) {
     DoLoadKeyedFixedDoubleArray(instr);
@@ -3550,6 +3561,9 @@ Operand LCodeGen::BuildFastArrayOperand(
     uint32_t additional_index) {
   Register elements_pointer_reg = ToRegister(elements_pointer);
   int element_shift_size = ElementsKindToShiftSize(elements_kind);
+  if (IsFixedTypedArrayElementsKind(elements_kind)) {
+    offset += FixedTypedArrayBase::kDataOffset - kHeapObjectTag;
+  }
   int shift_size = element_shift_size;
   if (key->IsConstantOperand()) {
     int constant_value = ToInteger32(LConstantOperand::cast(key));
@@ -4550,7 +4564,8 @@ void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) {
       elements_kind,
       0,
       instr->additional_index()));
-  if (elements_kind == EXTERNAL_FLOAT_ELEMENTS) {
+  if (elements_kind == EXTERNAL_FLOAT_ELEMENTS ||
+      elements_kind == FLOAT32_ELEMENTS) {
     if (CpuFeatures::IsSafeForSnapshot(SSE2)) {
       CpuFeatureScope scope(masm(), SSE2);
       XMMRegister xmm_scratch = double_scratch0();
@@ -4560,7 +4575,8 @@ void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) {
       __ fld(0);
       __ fstp_s(operand);
     }
-  } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS) {
+  } else if (elements_kind == EXTERNAL_DOUBLE_ELEMENTS ||
+             elements_kind == FLOAT64_ELEMENTS) {
     if (CpuFeatures::IsSafeForSnapshot(SSE2)) {
       CpuFeatureScope scope(masm(), SSE2);
       __ movsd(operand, ToDoubleRegister(instr->value()));
@@ -4573,18 +4589,27 @@ void LCodeGen::DoStoreKeyedExternalArray(LStoreKeyed* instr) {
       case EXTERNAL_PIXEL_ELEMENTS:
       case EXTERNAL_UNSIGNED_BYTE_ELEMENTS:
       case EXTERNAL_BYTE_ELEMENTS:
+      case UINT8_ELEMENTS:
+      case INT8_ELEMENTS:
+      case UINT8_CLAMPED_ELEMENTS:
         __ mov_b(operand, value);
         break;
       case EXTERNAL_SHORT_ELEMENTS:
       case EXTERNAL_UNSIGNED_SHORT_ELEMENTS:
+      case UINT16_ELEMENTS:
+      case INT16_ELEMENTS:
         __ mov_w(operand, value);
         break;
       case EXTERNAL_INT_ELEMENTS:
       case EXTERNAL_UNSIGNED_INT_ELEMENTS:
+      case UINT32_ELEMENTS:
+      case INT32_ELEMENTS:
         __ mov(operand, value);
         break;
       case EXTERNAL_FLOAT_ELEMENTS:
       case EXTERNAL_DOUBLE_ELEMENTS:
+      case FLOAT32_ELEMENTS:
+      case FLOAT64_ELEMENTS:
       case FAST_SMI_ELEMENTS:
       case FAST_ELEMENTS:
       case FAST_DOUBLE_ELEMENTS:
@@ -4722,7 +4747,7 @@ void LCodeGen::DoStoreKeyedFixedArray(LStoreKeyed* instr) {
 
 void LCodeGen::DoStoreKeyed(LStoreKeyed* instr) {
   // By cases...external, fast-double, fast
-  if (instr->is_external()) {
+  if (instr->is_external() || instr->is_fixed_typed_array()) {
     DoStoreKeyedExternalArray(instr);
   } else if (instr->hydrogen()->value()->representation().IsDouble()) {
     DoStoreKeyedFixedDoubleArray(instr);