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-rw-r--r--test/Transforms/TailCallElim/return_constant.ll19
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/TailCallElim/return_constant.ll b/test/Transforms/TailCallElim/return_constant.ll
new file mode 100644
index 0000000000..daa7d3a373
--- /dev/null
+++ b/test/Transforms/TailCallElim/return_constant.ll
@@ -0,0 +1,19 @@
+; Though this case seems to be fairly unlikely to occur in the wild, someone
+; plunked it into the demo script, so maybe they care about it.
+;
+; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call
+
+int %aaa(int %c) {
+entry:
+ %tmp.1 = seteq int %c, 0 ; <bool> [#uses=1]
+ br bool %tmp.1, label %return, label %else
+
+else: ; preds = %entry
+ %tmp.5 = add int %c, -1 ; <int> [#uses=1]
+ %tmp.3 = call int %aaa( int %tmp.5 ) ; <int> [#uses=0]
+ ret int 0
+
+return: ; preds = %entry
+ ret int 0
+}
+