[wasm] I added I64Eq to the Int64Lowering.

test/cctest/wasm/test-run-wasm-64.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include "src/wasm/wasm-macro-gen.h"
 
@@ skipping 36 matching lines @@
   WasmRunner<int64_t> r(MachineType::Int64(), MachineType::Int64());
   BUILD(r, WASM_I64_XOR(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
   FOR_INT64_INPUTS(i) {
     FOR_INT64_INPUTS(j) { CHECK_EQ((*i) ^ (*j), r.Call(*i, *j)); }
   }
 }
 // kExprI64Shl:
 // kExprI64ShrU:
 // kExprI64ShrS:
 // kExprI64Eq:
+TEST(Run_WasmI64Eq) {
+  WasmRunner<int32_t> r(MachineType::Int64(), MachineType::Int64());
+  BUILD(r, WASM_I64_EQ(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
+  FOR_INT64_INPUTS(i) {
+    FOR_INT64_INPUTS(j) { CHECK_EQ(*i == *j ? 1 : 0, r.Call(*i, *j)); }
+  }
+}
 // kExprI64Ne:
 // kExprI64LtS:
 // kExprI64LeS:
 // kExprI64LtU:
 // kExprI64LeU:
 // kExprI64GtS:
 // kExprI64GeS:
 // kExprI64GtU:
 // kExprI64GeU:
 
@@ skipping 53 matching lines @@
               WASM_I64(0xbcd1234000000013), WASM_I64(0xbcd1234000000014),
               WASM_I64(0xbcd1234000000015), WASM_I64(0xbcd1234000000016),
               WASM_I64(0xbcd1234000000017), WASM_I64(0xbcd1234000000018),
               WASM_I64(0xbcd1234000000019), WASM_I64(0xbcd123400000001a),
               WASM_I64(0xbcd123400000001b), WASM_I64(0xbcd123400000001c),
               WASM_I64(0xbcd123400000001d))));
 
     CHECK_EQ(i + 0xb, r.Call());
   }
 }