test/CFrontend/2006-01-16-BitCountIntrinsicsUnsigned.c

// RUN: %llvmgcc -S %s -o - | grep {llvm.ctlz.i32( i32} | wc -l | grep 2
// RUN: %llvmgcc -S %s -o - | grep {llvm.ctlz.i32(i32} | wc -l | grep 1

unsigned t2(unsigned X) {
  return __builtin_clz(X);
}
int t1(int X) {
  return __builtin_clz(X);
}