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diff --git a/test/Transforms/SimplifyLibCalls/MemSet.ll b/test/Transforms/SimplifyLibCalls/MemSet.ll
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+; Test that the LLVMMemSetOptimizer works correctly
+; RUN: llvm-upgrade < %s | llvm-as | opt -simplify-libcalls | llvm-dis | \
+; RUN: not grep {call.*llvm.memset}
+; END.
+
+declare void %llvm.memset.i32(sbyte*,ubyte,uint,uint)
+
+implementation ; Functions:
+
+int %main () {
+ %target = alloca [1024 x sbyte]
+ %target_p = getelementptr [1024 x sbyte]* %target, int 0, int 0
+ call void %llvm.memset.i32(sbyte* %target_p, ubyte 1, uint 0, uint 1)
+ call void %llvm.memset.i32(sbyte* %target_p, ubyte 1, uint 1, uint 1)
+ call void %llvm.memset.i32(sbyte* %target_p, ubyte 1, uint 2, uint 2)
+ call void %llvm.memset.i32(sbyte* %target_p, ubyte 1, uint 4, uint 4)
+ call void %llvm.memset.i32(sbyte* %target_p, ubyte 1, uint 8, uint 8)
+ ret int 0
+}