Support unaligned integer loads on ARM and MIPS.

runtime/vm/unit_test.h

Index: runtime/vm/unit_test.h
diff --git a/runtime/vm/unit_test.h b/runtime/vm/unit_test.h
index 189515faefa52ab4c0b4f1e00b32ec720aa94232..f385e44fad5b42c27ff3cbf3ebed6d75854651e1 100644
--- a/runtime/vm/unit_test.h
+++ b/runtime/vm/unit_test.h
@@ -174,6 +174,8 @@
     reinterpret_cast<name>(entry)(double_arg)
 #define EXECUTE_TEST_CODE_INTPTR_INTPTR(name, entry, pointer_arg)              \
     reinterpret_cast<name>(entry)(pointer_arg)
+#define EXECUTE_TEST_CODE_INT32_INTPTR(name, entry, pointer_arg)               \
+    reinterpret_cast<name>(entry)(pointer_arg)
 #else
 // Not running on ARM or MIPS hardware, call simulator to execute code.
 #if defined(ARCH_IS_64_BIT)
@@ -189,6 +191,11 @@
       bit_cast<int64_t, uword>(entry),                                         \
       bit_cast<int64_t, intptr_t>(pointer_arg),                                \
       0, 0, 0))
+#define EXECUTE_TEST_CODE_INT32_INTPTR(name, entry, pointer_arg)               \
+  static_cast<int32_t>(Simulator::Current()->Call(                             \
+      bit_cast<int64_t, uword>(entry),                                         \
+      bit_cast<int64_t, intptr_t>(pointer_arg),                                \
+      0, 0, 0))
 #else
 #define EXECUTE_TEST_CODE_INT32(name, entry)                                   \
   static_cast<int32_t>(Simulator::Current()->Call(                             \
@@ -201,6 +208,11 @@
       bit_cast<int32_t, uword>(entry),                                         \
       bit_cast<int32_t, intptr_t>(pointer_arg),                                \
       0, 0, 0))
+#define EXECUTE_TEST_CODE_INT32_INTPTR(name, entry, pointer_arg)               \
+  static_cast<int32_t>(Simulator::Current()->Call(                             \
+      bit_cast<int32_t, uword>(entry),                                         \
+      bit_cast<int32_t, intptr_t>(pointer_arg),                                \
+      0, 0, 0))
 #endif  // defined(ARCH_IS_64_BIT)
 #define EXECUTE_TEST_CODE_INT64_LL(name, entry, long_arg0, long_arg1)          \
   static_cast<int64_t>(Simulator::Current()->Call(                             \