Add ops from #232 to NewOpcodes.md

Author: tlively

proposals/simd/NewOpcodes.md

@@ -116,11 +116,22 @@
 | ---- mul ----        | 0x75   | i16x8.mul                | 0x95   | i32x4.mul                | 0xb5   | i64x2.mul                | 0xd5   |
 | i8x16.min_s          | 0x76   | i16x8.min_s              | 0x96   | i32x4.min_s              | 0xb6   | -------------            | 0xd6   |
 | i8x16.min_u          | 0x77   | i16x8.min_u              | 0x97   | i32x4.min_u              | 0xb7   | -------------            | 0xd7   |
-| i8x16.max_s          | 0x78   | i16x8.max_s              | 0x98   | i32x4.max_s              | 0xb8   | -------------            | 0xd8   |
-| i8x16.max_u          | 0x79   | i16x8.max_u              | 0x99   | i32x4.max_u              | 0xb9   | -------------            | 0xd9   |
-| ----------------     | 0x7a   | ----------------         | 0x9a   | i32x4.dot_i16x8_s        | 0xba   | -------------            | 0xda   |
-| i8x16.avgr_u         | 0x7b   | i16x8.avgr_u             | 0x9b   | ---- avgr_u ----         | 0xbb   | -------------            | 0xdb   |
-| ----------------     | 0x7c   | i16x8.q15mulr_sat_s      | 0x9c   | ----------------         | 0xbc   | -------------            | 0xdc   |
+| i8x16.max_s          | 0x78   | i16x8.max_s              | 0x98   | i32x4.max_s              | 0xb8   | -------------            | -      |
+| i8x16.max_u          | 0x79   | i16x8.max_u              | 0x99   | i32x4.max_u              | 0xb9   | -------------            | -      |
+| ----------------     | 0x7a   | ----------------         | 0x9a   | i32x4.dot_i16x8_s        | 0xba   | -------------            | -      |
+| i8x16.avgr_u         | 0x7b   | i16x8.avgr_u             | 0x9b   | ---- avgr_u ----         | 0xbb   | -------------            | -      |
+| ----------------     | 0x7c   | i16x8.q15mulr_sat_s      | 0x9c   | ----------------         | 0xbc   | -------------            | -      |
+
+| Rounding Op   | opcode |
+| ------------- | ------ |
+| f32x4.ceil    |   0xd8 |
+| f32x4.floor   |   0xd9 |
+| f32x4.trunc   |   0xda |
+| f32x4.nearest |   0xdb |
+| f64x2.ceil    |   0xdc |
+| f64x2.floor   |   0xdd |
+| f64x2.trunc   |   0xde |
+| f64x2.nearest |   0xdf |
 
 | f32x4 Op        | opcode | f64x2 Op        | opcode |
 | --------------- | ------ | --------------- | ------ |