1 files changed, 25 insertions, 0 deletions
diff --git a/test/CodeGen/2008-07-31-promotion-of-compound-pointer-arithmetic.c b/test/CodeGen/2008-07-31-promotion-of-compound-pointer-arithmetic.c
new file mode 100644
index 0000000..0ce4ba6
--- /dev/null
+++ b/test/CodeGen/2008-07-31-promotion-of-compound-pointer-arithmetic.c
@@ -0,0 +1,25 @@
+// RUN: clang-cc -triple i386-unknown-unknown -emit-llvm-bc -o - %s | opt -std-compile-opts | llvm-dis | grep "ret i32 1" | count 3
+// <rdr://6115726>
+
+int f0() {
+  int x;
+  unsigned short n = 1;
+  int *a = &x;
+  int *b = &x;
+  a = a - n;
+  b -= n;
+  return a == b;
+}
+
+int f1(int *a) {
+  long b = a - (int*) 1;
+  a -= (int*) 1;
+  return b == (long) a;
+}
+
+int f2(long n) {
+  int *b = n + (int*) 1;
+  n += (int*) 1;
+  return b == (int*) n;
+}
+