MIPS64: Enable shorten-64-to-32 warning.

test/cctest/test-assembler-mips64.cc

Index: test/cctest/test-assembler-mips64.cc
diff --git a/test/cctest/test-assembler-mips64.cc b/test/cctest/test-assembler-mips64.cc
index a698e16565ae1f17192f23cd6ea2ef56f6a8b4ec..0494a755c972085db7eac867e5ccb199ef0e875b 100644
--- a/test/cctest/test-assembler-mips64.cc
+++ b/test/cctest/test-assembler-mips64.cc
@@ -3121,8 +3121,9 @@ TEST(jump_tables1) {
 #endif
   F1 f = FUNCTION_CAST<F1>(code->entry());
   for (int i = 0; i < kNumCases; ++i) {
-    int res = reinterpret_cast<int64_t>(CALL_GENERATED_CODE(f, i, 0, 0, 0, 0));
-    ::printf("f(%d) = %d\n", i, res);
+    int64_t res = reinterpret_cast<int64_t>(
+        CALL_GENERATED_CODE(f, i, 0, 0, 0, 0));
+    ::printf("f(%d) = %" PRId64 "\n", i, res);
     CHECK_EQ(values[i], static_cast<int>(res));
   }
 }
@@ -3192,8 +3193,9 @@ TEST(jump_tables2) {
 #endif
   F1 f = FUNCTION_CAST<F1>(code->entry());
   for (int i = 0; i < kNumCases; ++i) {
-    int res = reinterpret_cast<int64_t>(CALL_GENERATED_CODE(f, i, 0, 0, 0, 0));
-    ::printf("f(%d) = %d\n", i, res);
+    int64_t res = reinterpret_cast<int64_t>(
+        CALL_GENERATED_CODE(f, i, 0, 0, 0, 0));
+    ::printf("f(%d) = %" PRId64 "\n", i, res);
     CHECK_EQ(values[i], res);
   }
 }