File: isnan.ll

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llvm-toolchain-3.9 1%3A3.9.1-9
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; RUN: llc < %s -march=x86 | not grep call

declare i1 @llvm.isunordered.f64(double)

define i1 @test_isnan(double %X) {
        %R = fcmp uno double %X, %X             ; <i1> [#uses=1]
        ret i1 %R
}