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      1 // RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
      2 
      3 // Checks folding of an unordered comparison
      4 int nan_ne_check() {
      5   // CHECK: ret i32 1
      6   return (__builtin_nanf("") != __builtin_nanf("")) ? 1 : 0;
      7 }
      8