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diff --git a/test/Transforms/InstCombine/2007-11-15-CompareMiscomp.ll b/test/Transforms/InstCombine/2007-11-15-CompareMiscomp.ll
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+++ b/test/Transforms/InstCombine/2007-11-15-CompareMiscomp.ll
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+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {icmp eq i32 %In, 1}
+; PR1800
+
+define i1 @test(i32 %In) {
+ %c1 = icmp sgt i32 %In, -1
+ %c2 = icmp eq i32 %In, 1
+ %V = and i1 %c1, %c2
+ ret i1 %V
+}
+