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      1 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
      2 
      3 unsigned t2(unsigned X) {
      4   // CHECK: t2
      5   // CHECK: llvm.ctlz.i32
      6   return __builtin_clz(X);
      7 }
      8 int t1(int X) {
      9   // CHECK: t1
     10   // CHECK: llvm.ctlz.i32
     11   return __builtin_clz(X);
     12 }
     13