Support Float64Arrays

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 2461 matching lines @@
     LLoadKeyedSpecializedArrayElement* instr) {
   Register external_pointer = ToRegister(instr->external_pointer());
   Register key = ToRegister(instr->key());
   ExternalArrayType array_type = instr->array_type();
   if (array_type == kExternalFloatArray) {
     CpuFeatures::Scope scope(VFP3);
     DwVfpRegister result(ToDoubleRegister(instr->result()));
     __ add(scratch0(), external_pointer, Operand(key, LSL, 2));
     __ vldr(result.low(), scratch0(), 0);
     __ vcvt_f64_f32(result, result.low());
+  } else if (array_type == kExternalDoubleArray) {
+    CpuFeatures::Scope scope(VFP3);
+    DwVfpRegister result(ToDoubleRegister(instr->result()));
+    __ add(scratch0(), external_pointer, Operand(key, LSL, 3));
+    __ vldr(result, scratch0(), 0);
   } else {
     Register result(ToRegister(instr->result()));
     switch (array_type) {
       case kExternalByteArray:
         __ ldrsb(result, MemOperand(external_pointer, key));
         break;
       case kExternalUnsignedByteArray:
       case kExternalPixelArray:
         __ ldrb(result, MemOperand(external_pointer, key));
         break;
       case kExternalShortArray:
         __ ldrsh(result, MemOperand(external_pointer, key, LSL, 1));
         break;
       case kExternalUnsignedShortArray:
         __ ldrh(result, MemOperand(external_pointer, key, LSL, 1));
         break;
       case kExternalIntArray:
         __ ldr(result, MemOperand(external_pointer, key, LSL, 2));
         break;
       case kExternalUnsignedIntArray:
         __ ldr(result, MemOperand(external_pointer, key, LSL, 2));
         __ cmp(result, Operand(0x80000000));
         // TODO(danno): we could be more clever here, perhaps having a special
         // version of the stub that detects if the overflow case actually
         // happens, and generate code that returns a double rather than int.
         DeoptimizeIf(cs, instr->environment());
         break;
       case kExternalFloatArray:
+      case kExternalDoubleArray:
         UNREACHABLE();
         break;
     }
   }
 }
 
 
 void LCodeGen::DoLoadKeyedGeneric(LLoadKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->object()).is(r1));
   ASSERT(ToRegister(instr->key()).is(r0));
@@ skipping 705 matching lines @@
   }
 }
 
 
 void LCodeGen::DoStoreKeyedSpecializedArrayElement(
     LStoreKeyedSpecializedArrayElement* instr) {
 
   Register external_pointer = ToRegister(instr->external_pointer());
   Register key = ToRegister(instr->key());
   ExternalArrayType array_type = instr->array_type();
+
   if (array_type == kExternalFloatArray) {
     CpuFeatures::Scope scope(VFP3);
     DwVfpRegister value(ToDoubleRegister(instr->value()));
     __ add(scratch0(), external_pointer, Operand(key, LSL, 2));
     __ vcvt_f32_f64(double_scratch0().low(), value);
     __ vstr(double_scratch0().low(), scratch0(), 0);
+  } else if (array_type == kExternalDoubleArray) {
+    CpuFeatures::Scope scope(VFP3);
+    DwVfpRegister value(ToDoubleRegister(instr->value()));
+    __ add(scratch0(), external_pointer, Operand(key, LSL, 3));
+    __ vstr(value, scratch0(), 0);
   } else {
     Register value(ToRegister(instr->value()));
     switch (array_type) {
       case kExternalPixelArray:
         // Clamp the value to [0..255].
         __ Usat(value, 8, Operand(value));
         __ strb(value, MemOperand(external_pointer, key));
         break;
       case kExternalByteArray:
       case kExternalUnsignedByteArray:
         __ strb(value, MemOperand(external_pointer, key));
         break;
       case kExternalShortArray:
       case kExternalUnsignedShortArray:
         __ strh(value, MemOperand(external_pointer, key, LSL, 1));
         break;
       case kExternalIntArray:
       case kExternalUnsignedIntArray:
         __ str(value, MemOperand(external_pointer, key, LSL, 2));
         break;
       case kExternalFloatArray:
+      case kExternalDoubleArray:
         UNREACHABLE();
         break;
     }
   }
 }
 
 
 void LCodeGen::DoStoreKeyedGeneric(LStoreKeyedGeneric* instr) {
   ASSERT(ToRegister(instr->object()).is(r2));
   ASSERT(ToRegister(instr->key()).is(r1));
@@ skipping 997 matching lines @@
   ASSERT(!environment->HasBeenRegistered());
   RegisterEnvironmentForDeoptimization(environment);
   ASSERT(osr_pc_offset_ == -1);
   osr_pc_offset_ = masm()->pc_offset();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal