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      1 // RUN: %clang_cc1 -triple=x86_64-linux-gnu -emit-llvm -o - %s | FileCheck %s
      2 
      3 // PR8839
      4 extern "C" char memmove();
      5 
      6 int main() {
      7   // CHECK: call {{signext i8|i8}} @memmove()
      8   return memmove();
      9 }
     10 
     11 struct S;
     12 // CHECK: define {{.*}} @_Z9addressofbR1SS0_(
     13 S *addressof(bool b, S &s, S &t) {
     14   // CHECK: %[[LVALUE:.*]] = phi
     15   // CHECK: ret {{.*}}* %[[LVALUE]]
     16   return __builtin_addressof(b ? s : t);
     17 }
     18 
     19 extern "C" int __builtin_abs(int); // #1
     20 long __builtin_abs(long);          // #2
     21 extern "C" int __builtin_abs(int); // #3
     22 
     23 int x = __builtin_abs(-2);
     24 // CHECK:  store i32 2, i32* @x, align 4
     25 
     26 long y = __builtin_abs(-2l);
     27 // CHECK:  [[Y:%.+]] = call i64 @_Z13__builtin_absl(i64 -2)
     28 // CHECK:  store i64 [[Y]], i64* @y, align 8
     29