[x86] Correct setting of WIntType for MCU target

Differential Revision: http://reviews.llvm.org/D16626

llvm-svn: 259780

clang/lib/Basic/Targets.cpp

@@ -3908,6 +3908,7 @@ public:
     LongDoubleWidth = 64;
     LongDoubleFormat = &llvm::APFloat::IEEEdouble;
     UserLabelPrefix = "";
+    WIntType = UnsignedInt;
   }
 
   CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {

clang/test/Preprocessor/elfiamcu-predefines.c

@@ -1,6 +1,7 @@
 // RUN: %clang_cc1 -E -dM -triple i586-intel-elfiamcu | FileCheck %s
 
 // CHECK: #define __USER_LABEL_PREFIX__ {{$}}
+// CHECK: #define __WINT_TYPE__ unsigned int
 // CHECK: #define __iamcu
 // CHECK: #define __iamcu__