DataTypes.h.cmake: Tweak INT32_MIN for MSVC. MSC treats -2147483648 as -(2147483648U).

It caused an unexpected behavior since r137254.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137365 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Support/DataTypes.h.cmake b/include/llvm/Support/DataTypes.h.cmake
index 72c451873c0f6b202c2bf4c3e3450e33819057cc..260ed9bb5c4b10768316d7c25c42ce7cafc8e474 100644 (file)
--- a/include/llvm/Support/DataTypes.h.cmake
+++ b/include/llvm/Support/DataTypes.h.cmake
@@ -131,7 +131,8 @@ typedef signed int ssize_t;
 # define INT32_MAX 2147483647
 #endif
 #ifndef INT32_MIN
-# define INT32_MIN -2147483648
+/* MSC treats -2147483648 as -(2147483648U). */
+# define INT32_MIN (-INT32_MAX - 1)
 #endif
 #ifndef UINT32_MAX
 # define UINT32_MAX 4294967295U