Add support for UCNs for character literals

llvm-svn: 116129

1 files changed, 35 insertions, 0 deletions

diff --git a/clang/test/CodeGen/char-literal.c b/clang/test/CodeGen/char-literal.c
new file mode 100644
index 00000000000..aff76d280d3
--- /dev/null
+++ b/clang/test/CodeGen/char-literal.c
@@ -0,0 +1,35 @@
+// RUN: %clang_cc1 -x c++ -triple i386-unknown-unkown -emit-llvm %s -o - | FileCheck %s
+// Runs in c++ mode so that wchar_t is available.
+
+int main() {
+  // CHECK: store i8 97
+  char a = 'a';
+
+  // Should pick second character.
+  // CHECK: store i8 98
+  char b = 'ab';
+
+  // CHECK: store i32 97
+  wchar_t wa = L'a';
+
+  // Should pick second character.
+  // CHECK: store i32 98
+  wchar_t wb = L'ab';
+
+  // Should pick last character and store its lowest byte.
+  // This does not match gcc, which takes the last character, converts it to
+  // utf8, and then picks the second-lowest byte of that (they probably store
+  // the utf8 in uint16_ts internally and take the lower byte of that).
+  // CHECK: store i8 48
+  char c = '\u1120\u0220\U00102030';
+
+  // CHECK: store i32 61451
+  wchar_t wc = L'\uF00B';
+
+  // CHECK: store i32 1110027
+  wchar_t wd = L'\U0010F00B';
+
+  // Should pick second character.
+  // CHECK: store i32 1110027
+  wchar_t we = L'\u1234\U0010F00B';
+}