[wasm] Added I64Xor to the Int64Lowering.

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

Index: test/cctest/wasm/test-run-wasm.cc
diff --git a/test/cctest/wasm/test-run-wasm.cc b/test/cctest/wasm/test-run-wasm.cc
index 911a9fe356160e660929de71dbba227ec52d94cc..6be72bdac714c8f743398811c96e4869cda1d3a1 100644
--- a/test/cctest/wasm/test-run-wasm.cc
+++ b/test/cctest/wasm/test-run-wasm.cc
@@ -2499,6 +2499,14 @@ TEST(Run_WasmI64Ior) {
   }
 }
 // kExprI64Xor:
+TEST(Run_WasmI64Xor) {

[titzer, 2016/02/23 00:52:42]

This file is going to get big; can we factor out all I64 operations into
test-run-wasm-64.cc?

+  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: