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[RelativeVTablesABI] Convert tests to opaque pointers (NFC)
Converted using https://gist.github.com/nikic/98357b71fd67756b0f064c9517b62a34 with manual fixup, primarily to drop check lines for types that no longer appear with opaque pointers.
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‎clang/test/CodeGenCXX/RelativeVTablesABI/diamond-inheritance.cpp

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// Diamond inheritance.
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// A more complicated multiple inheritance example that includes longer chain of inheritance and a common ancestor.
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4-
// RUN: %clang_cc1 -no-opaque-pointers %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck %s
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// CHECK-DAG: %class.B = type { %class.A }
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// CHECK-DAG: %class.A = type { i32 (...)** }
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// CHECK-DAG: %class.C = type { %class.A }
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// CHECK-DAG: %class.D = type { %class.B, %class.C }
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// RUN: %clang_cc1 %s -triple=aarch64-unknown-fuchsia -O1 -S -o - -emit-llvm -fhalf-no-semantic-interposition | FileCheck %s
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// VTable for B should contain offset to top (0), RTTI pointer, A::foo(), and B::barB().
12-
// CHECK: @_ZTV1B.local = private unnamed_addr constant { [4 x i32] } { [4 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8*, i8* }** @_ZTI1B.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [4 x i32] }, { [4 x i32] }* @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.A*)* dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [4 x i32] }, { [4 x i32] }* @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.B*)* dso_local_equivalent @_ZN1B4barBEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [4 x i32] }, { [4 x i32] }* @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
7+
// CHECK: @_ZTV1B.local = private unnamed_addr constant { [4 x i32] } { [4 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1B.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1B4barBEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1B.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
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// VTable for C should contain offset to top (0), RTTI pointer, A::foo(), and C::barC().
15-
// CHECK: @_ZTV1C.local = private unnamed_addr constant { [4 x i32] } { [4 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8*, i8* }** @_ZTI1C.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [4 x i32] }, { [4 x i32] }* @_ZTV1C.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.A*)* dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [4 x i32] }, { [4 x i32] }* @_ZTV1C.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.C*)* dso_local_equivalent @_ZN1C4barCEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [4 x i32] }, { [4 x i32] }* @_ZTV1C.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
10+
// CHECK: @_ZTV1C.local = private unnamed_addr constant { [4 x i32] } { [4 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1C.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1C.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1A3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1C.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1C4barCEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [4 x i32] }, ptr @_ZTV1C.local, i32 0, i32 0, i32 2) to i64)) to i32)] }, align 4
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// VTable for D should be similar to the mutiple inheritance example where this
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// vtable contains 2 inner vtables:
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// - 1st table containing D::foo(), B::barB(), and D::baz().
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// - 2nd table containing a thunk to D::foo() and C::barC().
21-
// CHECK: @_ZTV1D.local = private unnamed_addr constant { [5 x i32], [4 x i32] } { [5 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8*, i32, i32, i8*, i64, i8*, i64 }** @_ZTI1D.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.D*)* dso_local_equivalent @_ZN1D3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.B*)* dso_local_equivalent @_ZN1B4barBEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.D*)* dso_local_equivalent @_ZN1D3bazEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32)], [4 x i32] [i32 -8, i32 trunc (i64 sub (i64 ptrtoint ({ i8*, i8*, i32, i32, i8*, i64, i8*, i64 }** @_ZTI1D.rtti_proxy to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 1, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.D*)* dso_local_equivalent @_ZThn8_N1D3fooEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 1, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (void (%class.C*)* dso_local_equivalent @_ZN1C4barCEv to i64), i64 ptrtoint (i32* getelementptr inbounds ({ [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local, i32 0, i32 1, i32 2) to i64)) to i32)] }, align 4
16+
// CHECK: @_ZTV1D.local = private unnamed_addr constant { [5 x i32], [4 x i32] } { [5 x i32] [i32 0, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1D.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1D3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1B4barBEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1D3bazEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 0, i32 2) to i64)) to i32)], [4 x i32] [i32 -8, i32 trunc (i64 sub (i64 ptrtoint (ptr @_ZTI1D.rtti_proxy to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 1, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZThn8_N1D3fooEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 1, i32 2) to i64)) to i32), i32 trunc (i64 sub (i64 ptrtoint (ptr dso_local_equivalent @_ZN1C4barCEv to i64), i64 ptrtoint (ptr getelementptr inbounds ({ [5 x i32], [4 x i32] }, ptr @_ZTV1D.local, i32 0, i32 1, i32 2) to i64)) to i32)] }, align 4
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23-
// @_ZTV1B ={{.*}} unnamed_addr alias { [4 x i32] }, { [4 x i32] }* @_ZTV1B.local
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// @_ZTV1C ={{.*}} unnamed_addr alias { [4 x i32] }, { [4 x i32] }* @_ZTV1C.local
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// @_ZTV1D ={{.*}} unnamed_addr alias { [5 x i32], [4 x i32] }, { [5 x i32], [4 x i32] }* @_ZTV1D.local
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// @_ZTV1B ={{.*}} unnamed_addr alias { [4 x i32] }, ptr @_ZTV1B.local
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// @_ZTV1C ={{.*}} unnamed_addr alias { [4 x i32] }, ptr @_ZTV1C.local
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// @_ZTV1D ={{.*}} unnamed_addr alias { [5 x i32], [4 x i32] }, ptr @_ZTV1D.local
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class A {
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public:

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