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-rw-r--r--test/Transforms/TailDup/MergeTest.ll31
1 files changed, 31 insertions, 0 deletions
diff --git a/test/Transforms/TailDup/MergeTest.ll b/test/Transforms/TailDup/MergeTest.ll
new file mode 100644
index 0000000..ef6fe07
--- /dev/null
+++ b/test/Transforms/TailDup/MergeTest.ll
@@ -0,0 +1,31 @@
+; RUN: llvm-as < %s | opt -tailduplicate | llvm-dis | grep add | not grep uses=1
+
+int %test1(bool %C, int %A, int* %P) {
+entry:
+ br bool %C, label %L1, label %L2
+
+L1:
+ store int 1, int* %P
+ br label %L2
+
+L2:
+ %X = add int %A, 17
+ ret int %X
+}
+
+int %test2(bool %C, int %A, int* %P) {
+entry:
+ br bool %C, label %L1, label %L2
+
+L1:
+ store int 1, int* %P
+ br label %L3
+
+L2:
+ store int 7, int* %P
+ br label %L3
+L3:
+ %X = add int %A, 17
+ ret int %X
+}
+