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32791f19fd
These tests all require some adjustments to make sure that struct types still get generated, mostly done by stripping pointer indirections. Some of this may no longer test the situation it was originally intended for, e.g. the issue from pr18962 just doesn't really exist anymore with opaque pointers, as we no longer generate recursive types.
26 lines
1.0 KiB
C++
26 lines
1.0 KiB
C++
// RUN: %clang_cc1 -fms-compatibility -triple x86_64-windows-msvc %s -emit-llvm -o - | FileCheck %s
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// Make sure we choose the *direct* base path when doing these conversions.
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struct A { int a; };
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struct B : A { int b; };
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struct C : A, B { };
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extern "C" A *a_from_c(C *p) { return p; }
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// CHECK-LABEL: define dso_local ptr @a_from_c(ptr noundef %{{.*}})
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// CHECK: [[P_ADDR:%.*]] = alloca ptr
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// CHECK-NEXT: store ptr [[P:%.*]], ptr [[P_ADDR]]
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// CHECK-NEXT: [[RET:%.*]] = load ptr, ptr [[P_ADDR]]
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// CHECK-NEXT: ret ptr [[RET]]
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struct D : B, A { };
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extern "C" A *a_from_d(D *p) { return p; }
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// CHECK-LABEL: define dso_local ptr @a_from_d(ptr noundef %{{.*}})
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// CHECK: [[P_ADDR:%.*]] = alloca ptr
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// CHECK-NEXT: store ptr [[P:%.*]], ptr [[P_ADDR]]
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// CHECK-NEXT: [[P_RELOAD:%.*]] = load ptr, ptr [[P_ADDR]]
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// CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P_RELOAD]], null
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// CHECK: [[ADD_PTR:%.*]] = getelementptr inbounds i8, ptr [[P_RELOAD]], i64 8
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// CHECK: [[RET:%.*]] = phi ptr [ [[ADD_PTR]], {{.*}} ], [ null, %entry ]
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// CHECK-NEXT: ret ptr [[RET]]
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