1 // Check that the pointer adjustment from the virtual base offset is loaded as a
2 // 32-bit int.
3
4 // RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -o - -emit-llvm | FileCheck %s
5
6 // CHECK-LABEL: @_ZTv0_n12_N7Derived1fEi(
7 // CHECK-NEXT: entry:
8 // CHECK: [[vtable:%.+]] = load ptr, ptr %this1, align 8
9 // CHECK-NEXT: [[vbase_offset_ptr:%.+]] = getelementptr inbounds i8, ptr [[vtable]], i64 -12
10 // CHECK-NEXT: [[vbase_offset:%.+]] = load i32, ptr [[vbase_offset_ptr]], align 4
11 // CHECK-NEXT: [[adj_this:%.+]] = getelementptr inbounds i8, ptr %this1, i32 [[vbase_offset]]
12 // CHECK: [[call:%.+]] = tail call noundef i32 @_ZN7Derived1fEi(ptr noundef{{[^,]*}} [[adj_this]], i32 noundef {{.*}})
13 // CHECK: ret i32 [[call]]
14
15 class Base {
16 public:
17 virtual int f(int x);
18
19 private:
20 long x;
21 };
22
23 class Derived : public virtual Base {
24 public:
25 virtual int f(int x);
26
27 private:
28 long y;
29 };
30
f(int x)31 int Base::f(int x) { return x + 1; }
f(int x)32 int Derived::f(int x) { return x + 2; }
33