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diff --git a/test/Transforms/InstCombine/apint-zext2.ll b/test/Transforms/InstCombine/apint-zext2.ll
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+; Tests to make sure elimination of casts is working correctly
+; This test is for Integer BitWidth > 64 && BitWidth <= 1024.
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+define i1024 @test_sext_zext(i77 %A) {
+ %c1 = zext i77 %A to i533
+ %c2 = sext i533 %c1 to i1024
+ ret i1024 %c2
+; CHECK: %c2 = zext i77 %A to i1024
+; CHECK: ret i1024 %c2
+}