Add macros for specifying 64-bit integer literals.

runtime/vm/globals.h

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_GLOBALS_H_
 #define VM_GLOBALS_H_
 
 // __STDC_FORMAT_MACROS has to be defined to enable platform independent printf.
 #ifndef __STDC_FORMAT_MACROS
 #define __STDC_FORMAT_MACROS
@@ skipping 107 matching lines @@
 // Printf format for intptr_t on Windows.
 #if !defined(PRIxPTR) && defined(TARGET_OS_WINDOWS)
 #if defined(ARCH_IS_32_BIT)
 #define PRIxPTR "x"
 #else
 #define PRIxPTR "llx"
 #endif  // defined(ARCH_IS_32_BIT)
 #endif  // !defined(PRIxPTR) && defined(TARGET_OS_WINDOWS)
 
 
+// Suffixes for 64-bit integer literals.
+#ifdef _MSC_VER
+#define DART_INT64_C(x) x##I64
+#define DART_UINT64_C(x) x##UI64
+#else
+#define DART_INT64_C(x) x##LL
+#define DART_UINT64_C(x) x##ULL
+#endif
+
+
 // The following macro works on both 32 and 64-bit platforms.
 // Usage: instead of writing 0x1234567890123456
 //      write DART_2PART_UINT64_C(0x12345678,90123456);
 #define DART_2PART_UINT64_C(a, b)                                              \
                  (((static_cast<uint64_t>(a) << 32) + 0x##b##u))
 
 
 // Types for native machine words. Guaranteed to be able to hold pointers and
 // integers.
 typedef intptr_t word;
@@ skipping 203 matching lines @@
 // contants are 16 byte aligned.
 #if defined(TARGET_OS_WINDOWS)
 #define ALIGN16 __declspec(align(16))
 #else
 #define ALIGN16 __attribute__((aligned(16)))
 #endif
 
 }  // namespace dart
 
 #endif  // VM_GLOBALS_H_