[wasm] Int64Lowering of Int64Add on ia32 and arm.

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

Index: test/cctest/wasm/test-run-wasm-64.cc
diff --git a/test/cctest/wasm/test-run-wasm-64.cc b/test/cctest/wasm/test-run-wasm-64.cc
index 6f879641e69c80232f23ed49a7476dac56a611d2..7136add7995d86534bfd314e28a213de6f22616c 100644
--- a/test/cctest/wasm/test-run-wasm-64.cc
+++ b/test/cctest/wasm/test-run-wasm-64.cc
@@ -20,6 +20,13 @@
 // 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) {

[titzer, 2016/03/14 14:50:45]

You'll need to rebase and 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: