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; RUN: llc < %s -march=x86-64
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define i64 @foo() nounwind {
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%t0 = load i32* null, align 8
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switch i32 %t0, label %bb65 [
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%a = phi i64 [ 0, %bb ], [ 0, %entry ]
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tail call void asm "", "{cx}"(i64 %a) nounwind
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%t15 = and i64 %a, 4294967295
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define i64 @bar(i64 %t0) nounwind {
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call void asm "", "{cx}"(i64 0) nounwind
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%t2 = and i64 %t1, 4294967295