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-rw-r--r--test/Transforms/InstCombine/pr12338.ll24
1 files changed, 24 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/pr12338.ll b/test/Transforms/InstCombine/pr12338.ll
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index 0000000000..2b5c8f8a74
--- /dev/null
+++ b/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
+
+for.cond:
+ %local = phi <1 x i32> [ <i32 0>, %entry ], [ %phi2, %cond.end47 ]
+; CHECK: sub <1 x i32> <i32 92>, %local
+ %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
+}