1 files changed, 24 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/pr12338.ll b/llvm/test/Transforms/InstCombine/pr12338.ll
new file mode 100644
index 00000000000..7e0bf59614c
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/pr12338.ll
@@ -0,0 +1,24 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define void @entry() nounwind {
+entry:
+  br label %for.cond
+
+; CHECK: br label %for.cond
+for.cond:
+  %local = phi <1 x i32> [ <i32 0>, %entry ], [ %phi2, %cond.end47 ]
+  %phi3 = sub <1 x i32> zeroinitializer, %local
+  br label %cond.end
+
+cond.false:
+  br label %cond.end
+
+cond.end:
+  %cond = phi <1 x i32> [ %phi3, %for.cond ], [ undef, %cond.false ]
+  br label %cond.end47
+
+cond.end47:
+  %sum = add <1 x i32> %cond, <i32 92>
+  %phi2 = sub <1 x i32> zeroinitializer, %sum
+  br label %for.cond
+}