[NFC] Rename {F32,F64}NearestInt to {F32,F64}Nearest (WebAssembly#7089)

Rename the opcode values in wasm-binary.h to better match the names of
the corresponding instructions. This also makes these names match the
scheme used by the rest of the basic unary operations, allowing for more
macro use in the binary reader.

src/wasm-binary.h

@@ -563,7 +563,7 @@ enum ASTNodes {
   F32Ceil = 0x8d,
   F32Floor = 0x8e,
   F32Trunc = 0x8f,
-  F32NearestInt = 0x90,
+  F32Nearest = 0x90,
   F32Sqrt = 0x91,
   F32Add = 0x92,
   F32Sub = 0x93,
@@ -578,7 +578,7 @@ enum ASTNodes {
   F64Ceil = 0x9b,
   F64Floor = 0x9c,
   F64Trunc = 0x9d,
-  F64NearestInt = 0x9e,
+  F64Nearest = 0x9e,
   F64Sqrt = 0x9f,
   F64Add = 0xa0,
   F64Sub = 0xa1,

src/wasm/wasm-binary.cpp

@@ -3097,11 +3097,7 @@ Result<> WasmBinaryReader::readInst() {
       UNARY_FLOAT(Abs);
       UNARY_FLOAT(Ceil);
       UNARY_FLOAT(Floor);
-    // UNARY_FLOAT(NearestInt);
-    case BinaryConsts::F32NearestInt:
-      return builder.makeUnary(NearestFloat32);
-    case BinaryConsts::F64NearestInt:
-      return builder.makeUnary(NearestFloat64);
+      UNARY_FLOAT(Nearest);
       UNARY_FLOAT(Sqrt);
 
     case BinaryConsts::F32UConvertI32:

src/wasm/wasm-stack.cpp

@@ -902,7 +902,7 @@ void BinaryInstWriter::visitUnary(Unary* curr) {
       o << int8_t(BinaryConsts::F32Trunc);
       break;
     case NearestFloat32:
-      o << int8_t(BinaryConsts::F32NearestInt);
+      o << int8_t(BinaryConsts::F32Nearest);
       break;
     case SqrtFloat32:
       o << int8_t(BinaryConsts::F32Sqrt);
@@ -923,7 +923,7 @@ void BinaryInstWriter::visitUnary(Unary* curr) {
       o << int8_t(BinaryConsts::F64Trunc);
       break;
     case NearestFloat64:
-      o << int8_t(BinaryConsts::F64NearestInt);
+      o << int8_t(BinaryConsts::F64Nearest);
       break;
     case SqrtFloat64:
       o << int8_t(BinaryConsts::F64Sqrt);