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diff --git a/test/CodeGen/CBackend/2007-02-05-memset.ll b/test/CodeGen/CBackend/2007-02-05-memset.ll
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+++ b/test/CodeGen/CBackend/2007-02-05-memset.ll
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+; RUN: llvm-as < %s | llc -march=c
+; PR1181
+target datalayout = "e-p:64:64"
+target triple = "x86_64-apple-darwin8"
+
+implementation ; Functions:
+
+declare void @llvm.memset.i64(i8*, i8, i64, i32)
+
+define fastcc void @InitUser_data_unregistered() {
+entry:
+ tail call void @llvm.memset.i64( i8* null, i8 0, i64 65496, i32 1 )
+ ret void
+}