1 files changed, 36 insertions, 0 deletions
diff --git a/test/CodeGen/forwarding-blocks-if.c b/test/CodeGen/forwarding-blocks-if.c
new file mode 100644
index 000000000000..51711bf0ef46
--- /dev/null
+++ b/test/CodeGen/forwarding-blocks-if.c
@@ -0,0 +1,36 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
+// Check that no empty blocks are generated for nested ifs.
+
+extern void func();
+
+int f0(int val) {
+  if (val == 0) {
+    func();
+  } else if (val == 1) {
+    func();
+  }
+  return 0;
+}
+
+// CHECK-LABEL: define {{.*}}i32 @f0
+// CHECK: call void {{.*}} @func
+// CHECK: call void {{.*}} @func
+// CHECK: br label %[[RETBLOCK1:[^ ]*]]
+// CHECK: [[RETBLOCK1]]:
+// CHECK-NOT: br label
+// CHECK: ret i32
+
+int f1(int val, int g) {
+  if (val == 0)
+    if (g == 1) {
+      func();
+    }
+  return 0;
+}
+
+// CHECK-LABEL: define {{.*}}i32 @f1
+// CHECK: call void {{.*}} @func
+// CHECK: br label %[[RETBLOCK2:[^ ]*]]
+// CHECK: [[RETBLOCK2]]:
+// CHECK-NOT: br label
+// CHECK: ret i32