fix PR6766: codegen of var initialized with wide char

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@101568 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/CGExprConstant.cpp

@@ -615,17 +615,16 @@ public:
   }
 
   llvm::Constant *EmitArrayInitialization(InitListExpr *ILE) {
-    std::vector<llvm::Constant*> Elts;
-    const llvm::ArrayType *AType =
-        cast<llvm::ArrayType>(ConvertType(ILE->getType()));
     unsigned NumInitElements = ILE->getNumInits();
-    // FIXME: Check for wide strings
     // FIXME: Check for NumInitElements exactly equal to 1??
     if (NumInitElements > 0 &&
         (isa<StringLiteral>(ILE->getInit(0)) ||
-         isa<ObjCEncodeExpr>(ILE->getInit(0))) &&
-        ILE->getType()->getArrayElementTypeNoTypeQual()->isCharType())
+         isa<ObjCEncodeExpr>(ILE->getInit(0))))
       return Visit(ILE->getInit(0));
+
+    std::vector<llvm::Constant*> Elts;
+    const llvm::ArrayType *AType =
+        cast<llvm::ArrayType>(ConvertType(ILE->getType()));
     const llvm::Type *ElemTy = AType->getElementType();
     unsigned NumElements = AType->getNumElements();
 

test/CodeGen/global-init.c

@@ -31,6 +31,15 @@ struct ManyFields {
 struct ManyFields FewInits = {1, 2};
 
 
+// PR6766
+// CHECK: @l = global %1 { [24 x i8] c"f\00\00\00o\00\00\00o\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", i32 1 }
+typedef __WCHAR_TYPE__ wchar_t;
+struct K {
+  wchar_t L[6];
+  int M;
+} l =  { { L"foo" }, 1 };
+
+
 // NOTE: tentative definitions are processed at the end of the translation unit.
 
 // This shouldn't be emitted as common because it has an explicit section.

test/CodeGen/init.c

@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o %t
+// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
 
 void f1() {
   // Scalars in braces.
@@ -22,8 +22,8 @@ void f3() {
 }
 
 // Constants
-// RUN: grep '@g3 = constant i32 10' %t
-// RUN: grep '@f4.g4 = internal constant i32 12' %t
+// CHECK: @g3 = constant i32 10
+// CHECK: @f4.g4 = internal constant i32 12
 const int g3 = 10;
 int f4() {
   static const int g4 = 12;