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      1 // RUN: %clang_cc1 -triple armv7-apple-ios -emit-llvm -o - %s | FileCheck %s
      2 struct Empty {};
      3 
      4 Empty emptyvar;
      5 
      6 int take_args(int a, ...) {
      7   __builtin_va_list l;
      8   __builtin_va_start(l, a);
      9 // CHECK: call void @llvm.va_start
     10 
     11   emptyvar = __builtin_va_arg(l, Empty);
     12 // CHECK: load i8*, i8**
     13 // CHECK-NOT: getelementptr
     14 // CHECK: [[EMPTY_PTR:%[a-zA-Z0-9._]+]] = bitcast i8* {{%[a-zA-Z0-9._]+}} to %struct.Empty*
     15 
     16   // It's conceivable that EMPTY_PTR may not actually be a valid pointer
     17   // (e.g. it's at the very bottom of the stack and the next page is
     18   // invalid). This doesn't matter provided it's never loaded (there's no
     19   // well-defined way to tell), but it becomes a problem if we do try to use it.
     20 // CHECK-NOT: load %struct.Empty, %struct.Empty* [[EMPTY_PTR]]
     21 
     22   int i = __builtin_va_arg(l, int);
     23 // CHECK: load i32, i32*
     24 
     25   __builtin_va_end(l);
     26   return i;
     27 }
     28