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							; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
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							; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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							 | 
							
							; RUN: diff %t1.ll %t2.ll
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							@X = global i31 undef
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							declare i32 @"atoi"(i8 *)
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							define i63 @test() {
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								ret i63 undef
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							}
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							 | 
							
							define i31 @test2() {
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								%X = add i31 undef, 1
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								ret i31 %X
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							}
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