i64x2.eq instruction (#381)

Author: Maratyszcza

proposals/simd/BinarySIMD.md

@@ -249,3 +249,4 @@ For example, `ImmLaneIdx16` is a byte with values in the range 0-15 (inclusive).
 | `v128.store16_lane`         |     `TBD`| m:memarg, i:ImmLaneIdx8  |
 | `v128.store32_lane`         |     `TBD`| m:memarg, i:ImmLaneIdx4  |
 | `v128.store64_lane`         |     `TBD`| m:memarg, i:ImmLaneIdx2  |
+| `i64x2.eq`                  |     `TBD`| -                        |

proposals/simd/ImplementationStatus.md

@@ -148,6 +148,7 @@
 | `i32x4.max_s`               |               `-msimd128` | :heavy_check_mark: |                    |                    | :heavy_check_mark: |
 | `i32x4.max_u`               |               `-msimd128` | :heavy_check_mark: |                    |                    | :heavy_check_mark: |
 | `i32x4.dot_i16x8_s`         |                           | :heavy_check_mark: |                    |                    | :heavy_check_mark: |
+| `i64x2.eq`                  |                           |                    |                    |                    |                    |
 | `i64x2.neg`                 |               `-msimd128` | :heavy_check_mark: |                    | :heavy_check_mark: | :heavy_check_mark: |
 | `i64x2.bitmask`             |                           | :heavy_check_mark: |                    |                    |                    |
 | `i64x2.shl`                 |               `-msimd128` | :heavy_check_mark: |                    | :heavy_check_mark: | :heavy_check_mark: |

proposals/simd/SIMD.md

@@ -717,6 +717,7 @@ in each lane are `0` for `false` and all ones for `true`.
 * `i8x16.eq(a: v128, b: v128) -> v128`
 * `i16x8.eq(a: v128, b: v128) -> v128`
 * `i32x4.eq(a: v128, b: v128) -> v128`
+* `i64x2.eq(a: v128, b: v128) -> v128`
 * `f32x4.eq(a: v128, b: v128) -> v128`
 * `f64x2.eq(a: v128, b: v128) -> v128`