Port SIMD types from dart:scalarlist to dart:typeddata.

sdk/lib/typeddata/typeddata.dart

Index: sdk/lib/typeddata/typeddata.dart
diff --git a/sdk/lib/typeddata/typeddata.dart b/sdk/lib/typeddata/typeddata.dart
index 1a7b20328bb13245117b3ef4b2e9d8ba370475d5..773d3cc441619e8f29e9bfdcdf25568ad0275d4f 100644
--- a/sdk/lib/typeddata/typeddata.dart
+++ b/sdk/lib/typeddata/typeddata.dart
@@ -681,3 +681,188 @@ abstract class Float64List implements List<double>, TypedData {
 
   static const int BYTES_PER_ELEMENT = 8;
 }
+
+
+/**
+ * A fixed-length list of Float32x4 numbers that is viewable as a
+ * [TypedData]. For long lists, this implementation will be considerably more
+ * space- and time-efficient than the default [List] implementation.
+ */
+abstract class Float32x4List implements List<Float32x4>, TypedData {
+  /**
+   * Creates a [Float32x4List] of the specified length (in elements),
+   * all of whose elements are initially zero.
+   */
+  external factory Float32x4List(int length);
+
+  /**
+   * Creates a [Float32x4List] _view_ of the specified region in the specified
+   * byte buffer. Changes in the [Float32x4List] will be visible in the byte
+   * buffer and vice versa. If the [offsetInBytes] index of the region is not
+   * specified, it defaults to zero (the first byte in the byte buffer).
+   * If the length is not specified, it defaults to null, which indicates
+   * that the view extends to the end of the byte buffer.
+   *
+   * Throws [RangeError] if [offsetInBytes] or [length] are negative, or
+   * if [offsetInBytes] + ([length] * elementSizeInBytes) is greater than
+   * the length of [buffer].
+   *
+   * Throws [ArgumentError] if [offsetInBytes] is not a multiple of
+   * BYTES_PER_ELEMENT.
+   */
+  external factory Float32x4List.view(ByteBuffer buffer,
+                                      [int offsetInBytes = 0, int length]);
+
+  static const int BYTES_PER_ELEMENT = 16;
+}
+
+
+/**
+ * Interface of Dart Float32x4 immutable value type and operations.
+ * Float32x4 stores 4 32-bit floating point values in "lanes".
+ * The lanes are "x", "y", "z", and "w" respectively.
+ */
+abstract class Float32x4 {
+  external factory Float32x4(double x, double y, double z, double w);
+  external factory Float32x4.zero();
+
+  /// Addition operator.
+  Float32x4 operator+(Float32x4 other);
+  /// Negate operator.
+  Float32x4 operator-();
+  /// Subtraction operator.
+  Float32x4 operator-(Float32x4 other);
+  /// Multiplication operator.
+  Float32x4 operator*(Float32x4 other);
+  /// Division operator.
+  Float32x4 operator/(Float32x4 other);
+
+  /// Relational less than.
+  Uint32x4 lessThan(Float32x4 other);
+  /// Relational less than or equal.
+  Uint32x4 lessThanOrEqual(Float32x4 other);
+  /// Relational greater than.
+  Uint32x4 greaterThan(Float32x4 other);
+  /// Relational greater than or equal.
+  Uint32x4 greaterThanOrEqual(Float32x4 other);
+  /// Relational equal.
+  Uint32x4 equal(Float32x4 other);
+  /// Relational not-equal.
+  Uint32x4 notEqual(Float32x4 other);
+
+  /// Returns a copy of [this] each lane being scaled by [s].
+  Float32x4 scale(double s);
+  /// Returns the absolute value of this [Float32x4].
+  Float32x4 abs();
+  /// Clamps [this] to be in the range [lowerLimit]-[upperLimit].
+  Float32x4 clamp(Float32x4 lowerLimit,
+                         Float32x4 upperLimit);
+
+  /// Extracted x value.
+  double get x;
+  /// Extracted y value.
+  double get y;
+  /// Extracted z value.
+  double get z;
+  /// Extracted w value.
+  double get w;
+
+  /// Returns a new [Float32x4] with [this]' x value in all four lanes.
+  Float32x4 get xxxx;
+  /// Returns a new [Float32x4] with [this]' y value in all four lanes.
+  Float32x4 get yyyy;
+  /// Returns a new [Float32x4] with [this]' z value in all four lanes.
+  Float32x4 get zzzz;
+  /// Returns a new [Float32x4] with [this]' w value in all four lanes.
+  Float32x4 get wwww;
+  // TODO(johnmccutchan): Add all 256 possible combinations.
+
+  /// Returns a new [Float32x4] copied from [this] with a new x value.
+  Float32x4 withX(double x);
+  /// Returns a new [Float32x4] copied from [this] with a new y value.
+  Float32x4 withY(double y);
+  /// Returns a new [Float32x4] copied from [this] with a new z value.
+  Float32x4 withZ(double z);
+  /// Returns a new [Float32x4] copied from [this] with a new w value.
+  Float32x4 withW(double w);
+
+  /// Returns the lane-wise minimum value in [this] or [other].
+  Float32x4 min(Float32x4 other);
+
+  /// Returns the lane-wise maximum value in [this] or [other].
+  Float32x4 max(Float32x4 other);
+
+  /// Returns the square root of [this].
+  Float32x4 sqrt();
+
+  /// Returns the reciprocal of [this].
+  Float32x4 reciprocal();
+
+  /// Returns the square root of the reciprocal of [this].
+  Float32x4 reciprocalSqrt();
+
+  /// Returns a bit-wise copy of [this] as a [Uint32x4].
+  Uint32x4 toUint32x4();
+}
+
+
+/**
+ * Interface of Dart Uint32x4 and operations.
+ * Uint32x4 stores 4 32-bit bit-masks in "lanes".
+ * The lanes are "x", "y", "z", and "w" respectively.
+ */
+abstract class Uint32x4 {
+  external factory Uint32x4(int x, int y, int z, int w);
+  external factory Uint32x4.bool(bool x, bool y, bool z, bool w);
+
+  /// The bit-wise or operator.
+  Uint32x4 operator|(Uint32x4 other);
+  /// The bit-wise and operator.
+  Uint32x4 operator&(Uint32x4 other);
+  /// The bit-wise xor operator.
+  Uint32x4 operator^(Uint32x4 other);
+
+  /// Extract 32-bit mask from x lane.
+  int get x;
+  /// Extract 32-bit mask from y lane.
+  int get y;
+  /// Extract 32-bit mask from z lane.
+  int get z;
+  /// Extract 32-bit mask from w lane.
+  int get w;
+
+  /// Returns a new [Uint32x4] copied from [this] with a new x value.
+  Uint32x4 withX(int x);
+  /// Returns a new [Uint32x4] copied from [this] with a new y value.
+  Uint32x4 withY(int y);
+  /// Returns a new [Uint32x4] copied from [this] with a new z value.
+  Uint32x4 withZ(int z);
+  /// Returns a new [Uint32x4] copied from [this] with a new w value.
+  Uint32x4 withW(int w);
+
+  /// Extracted x value. Returns false for 0, true for any other value.
+  bool get flagX;
+  /// Extracted y value. Returns false for 0, true for any other value.
+  bool get flagY;
+  /// Extracted z value. Returns false for 0, true for any other value.
+  bool get flagZ;
+  /// Extracted w value. Returns false for 0, true for any other value.
+  bool get flagW;
+
+  /// Returns a new [Uint32x4] copied from [this] with a new x value.
+  Uint32x4 withFlagX(bool x);
+  /// Returns a new [Uint32x4] copied from [this] with a new y value.
+  Uint32x4 withFlagY(bool y);
+  /// Returns a new [Uint32x4] copied from [this] with a new z value.
+  Uint32x4 withFlagZ(bool z);
+  /// Returns a new [Uint32x4] copied from [this] with a new w value.
+  Uint32x4 withFlagW(bool w);
+
+  /// Merge [trueValue] and [falseValue] based on [this]' bit mask:
+  /// Select bit from [trueValue] when bit in [this] is on.
+  /// Select bit from [falseValue] when bit in [this] is off.
+  Float32x4 select(Float32x4 trueValue, Float32x4 falseValue);
+
+  /// Returns a bit-wise copy of [this] as a [Float32x4].
+  Float32x4 toFloat32x4();
+}