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diff --git a/test/CodeGen/X86/2002-12-23-SubProblem.llx b/test/CodeGen/X86/2002-12-23-SubProblem.llx
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+++ b/test/CodeGen/X86/2002-12-23-SubProblem.llx
@@ -0,0 +1,7 @@
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 -regalloc=simple
+
+int %main(int %B) {
+ ;%B = add int 0, 1
+ %R = sub int %B, 1 ; %r = 0
+ ret int %R
+}