Add Target hooks for IRgen of [cf]string literals.
 - Notably, set section on cfstring literal string data (for now, this
   is done everywhere because it matches what we were already doing
   for the CFString data itself)

 - <rdar://problem/6599098> [irgen] linker requires objc string data
   to go into cstring


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68160 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/darwin-string-literals.c b/test/CodeGen/darwin-string-literals.c
new file mode 100644
index 0000000..5bfb84e
--- /dev/null
+++ b/test/CodeGen/darwin-string-literals.c
@@ -0,0 +1,9 @@
+// RUN: clang-cc -triple i386-apple-darwin9 -emit-llvm %s -o %t &&
+
+// RUN: grep -F '@"\01LC" = internal constant [8 x i8] c"string0\00"' %t &&
+// RUN: grep -F '@"\01LC1" = internal constant [8 x i8] c"string1\00", section "__TEXT,__cstring,cstring_literals"' %t &&
+
+// RUN: true
+
+const char *g0 = "string0";
+const void *g1 = __builtin___CFStringMakeConstantString("string1");