The UTF16 string referenced by a CFString should go into the __TEXT,__ustring
section. A 'normal' string will go into the __TEXT,__const section, but this
isn't good for UTF16 strings. The __ustring section allows for coalescing, among
other niceties (such as allowing the linker to easily split up strings).
Instead of outputting the UTF16 string as a series of bytes, output it as a
series of shorts. The back-end will then nicely place the UTF16 string into the
correct section, because it's a mensch.
<rdar://problem/10655949>
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153710 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/utf16-cfstrings.c b/test/CodeGen/utf16-cfstrings.c
new file mode 100644
index 0000000..d4f214b
--- /dev/null
+++ b/test/CodeGen/utf16-cfstrings.c
@@ -0,0 +1,10 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm %s -o - | FileCheck %s
+// <rdar://problem/10655949>
+
+// CHECK: @.str = internal unnamed_addr constant [9 x i16] [i16 252, i16 98, i16 101, i16 114, i16 104, i16 117, i16 110, i16 100, i16 0], align 2
+
+#define CFSTR __builtin___CFStringMakeConstantString
+
+void foo() {
+ CFSTR("überhund");
+}