[wasm] Int64Lowering of Int64Add on ia32 and arm.

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 17 matching lines @@
 #else
 #define MIPS_OR_ARM_OR_X87 false
 #endif
 
 #define FOREACH_I64_OPERATOR(V)   \
   V(DepthFirst, false)            \
   V(I64Const, true)               \
   V(I64Return, true)              \
   V(I64Param, true)               \
   V(I64LoadStore, true)           \
-  V(I64Add, false)                \
+  V(I64Add, true)                 \
   V(I64Sub, false)                \
   V(I64Mul, false)                \
   V(I64DivS, false)               \
   V(I64DivU, false)               \
   V(I64RemS, false)               \
   V(I64RemU, false)               \
   V(I64And, true)                 \
   V(I64Ior, true)                 \
   V(I64Xor, true)                 \
   V(I64Shl, !MIPS_OR_X87)         \
@@ skipping 62 matching lines @@
   WasmRunner<int64_t> r(MachineType::Int64());
 
   BUILD(r, WASM_RETURN(WASM_GET_LOCAL(0)));
 
   FOR_INT64_INPUTS(i) { CHECK_EQ(*i, r.Call(*i)); }
 }
 
 // todo(ahaas): I added a list of missing instructions here to make merging
 // easier when I do them one by one.
 // kExprI64Add:
+TEST(Run_WasmI64Add) {
+  REQUIRE(I64Add);
+  WasmRunner<int64_t> r(MachineType::Int64(), MachineType::Int64());
+  BUILD(r, WASM_I64_ADD(WASM_GET_LOCAL(0), WASM_GET_LOCAL(1)));
+  FOR_INT64_INPUTS(i) {
+    FOR_INT64_INPUTS(j) { CHECK_EQ(*i + *j, r.Call(*i, *j)); }
+  }
+}
 // kExprI64Sub:
 // kExprI64Mul:
 // kExprI64DivS:
 // kExprI64DivU:
 // kExprI64RemS:
 // kExprI64RemU:
 // kExprI64And:
 TEST(Run_Wasm_I64And) {
   REQUIRE(I64And);
   WasmRunner<int64_t> r(MachineType::Int64(), MachineType::Int64());
@@ skipping 1063 matching lines @@
                                   WASM_I64_SCONVERT_I32(WASM_GET_LOCAL(0)))),
               WASM_ZERO));
 
   *global = 0xFFFFFFFFFFFFFFFFLL;
   for (int i = 9; i < 444444; i += 111111) {
     int64_t expected = *global & i;
     r.Call(i);
     CHECK_EQ(expected, *global);
   }
 }