Implement ICs for FastDoubleArray loads and stores

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index 3c7fc1c6313557b17494907794151eccce614f35..d2269da1f1762fa1b15dadfbcb716d5af9aaeb66 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 1994-2006 Sun Microsystems Inc.
+// Copyright (c) 2011 Sun Microsystems Inc.
 // All Rights Reserved.
 //
 // Redistribution and use in source and binary forms, with or without
@@ -65,13 +65,22 @@
 namespace v8 {
 namespace internal {
 
+static uint64_t kHoleNanUpper32AsInt64 = kHoleNanUpper32;
+static uint64_t kCanonicalNonHoleNanUpper32AsInt64 =
+    kCanonicalNonHoleNanUpper32;
+
+uint64_t kHoleNanInt64 = (kHoleNanUpper32AsInt64 << 32) | kHoleNanLower32;
+uint64_t kCanonicalNonHoleNanInt64 =
+    (kCanonicalNonHoleNanUpper32AsInt64 << 32) | kCanonicalNonHoleNanLower32;
 
 const double DoubleConstant::min_int = kMinInt;
 const double DoubleConstant::one_half = 0.5;
 const double DoubleConstant::minus_zero = -0.0;
 const double DoubleConstant::uint8_max_value = 255;
 const double DoubleConstant::zero = 0.0;
-const double DoubleConstant::nan = OS::nan_value();
+const double DoubleConstant::canonical_non_hole_nan =
+    BitCast<double>(kCanonicalNonHoleNanInt64);
+const double DoubleConstant::the_hole_nan = BitCast<double>(kHoleNanInt64);
 const double DoubleConstant::negative_infinity = -V8_INFINITY;
 const char* RelocInfo::kFillerCommentString = "DEOPTIMIZATION PADDING";
 
@@ -921,9 +930,15 @@ ExternalReference ExternalReference::address_of_negative_infinity() {
 }
 
 
-ExternalReference ExternalReference::address_of_nan() {
+ExternalReference ExternalReference::address_of_canonical_non_hole_nan() {
+  return ExternalReference(reinterpret_cast<void*>(
+      const_cast<double*>(&DoubleConstant::canonical_non_hole_nan)));
+}
+
+
+ExternalReference ExternalReference::address_of_the_hole_nan() {
   return ExternalReference(reinterpret_cast<void*>(
-      const_cast<double*>(&DoubleConstant::nan)));
+      const_cast<double*>(&DoubleConstant::the_hole_nan)));
 }