New testcase for a bug fixed in the GCC SSA construction algorithm:

http://gcc.gnu.org/ml/gcc/2002-09/msg00760.html

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3817 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CFrontend/2002-09-18-UnionProblem.c b/test/CFrontend/2002-09-18-UnionProblem.c
new file mode 100644 (file)
index 0000000..e914e4f
--- /dev/null
+++ b/test/CFrontend/2002-09-18-UnionProblem.c
@@ -0,0 +1,24 @@
+
+struct DWstruct {
+  char high, low;
+};
+
+typedef union {
+  struct DWstruct s;
+  short ll;
+} DWunion;
+
+short __udivmodhi4 (char n1, char bm) {
+  DWunion rr;
+
+  if (bm == 0)
+    {
+      rr.s.high = n1;
+    }
+  else
+    {
+      rr.s.high = bm;
+    }
+
+  return rr.ll;
+}