8acdcf4016
All data structures and values associated with handling virtual functions / inheritance, as well as RTTI, are globals and thus can only reside in the global address space. This was not taken fully taken into account because for most targets, global & generic appear to coincide. However, on targets where global & generic ASes differ (e.g. AMDGPU), this was problematic, since it led to the generation of invalid bitcasts (which would trigger asserts in Debug) and less than optimal code. This patch does two things: ensures that vtables, vptrs, vtts, typeinfo are generated in the right AS, and populated accordingly; removes a bunch of bitcasts which look like left-overs from the typed ptr era. Reviewed By: yxsamliu Differential Revision: https://reviews.llvm.org/D153092
28 lines
4.1 KiB
C++
28 lines
4.1 KiB
C++
// RUN: %clang_cc1 %s -triple=amdgcn-amd-amdhsa -std=c++11 -emit-llvm -o - | FileCheck %s
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// This is the sample from the C++ Itanium ABI, p2.6.2.
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namespace Test {
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class A1 { int i; };
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class A2 { int i; virtual void f(); };
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class V1 : public A1, public A2 { int i; };
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class B1 { int i; };
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class B2 { int i; };
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class V2 : public B1, public B2, public virtual V1 { int i; };
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class V3 { virtual void g(); };
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class C1 : public virtual V1 { int i; };
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class C2 : public virtual V3, virtual V2 { int i; };
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class X1 { int i; };
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class C3 : public X1 { int i; };
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class D : public C1, public C2, public C3 { int i; };
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D d;
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}
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// CHECK: linkonce_odr unnamed_addr addrspace(1) constant [13 x ptr addrspace(1)] [ptr addrspace(1) getelementptr inbounds ({ [5 x ptr addrspace(1)], [7 x ptr addrspace(1)], [4 x ptr addrspace(1)], [3 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTVN4Test1DE, i32 0, inrange i32 0, i32 5), ptr addrspace(1) getelementptr inbounds ({ [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE0_NS_2C1E, i32 0, inrange i32 0, i32 3), ptr addrspace(1) getelementptr inbounds ({ [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE0_NS_2C1E, i32 0, inrange i32 1, i32 3), ptr addrspace(1) getelementptr inbounds ({ [7 x ptr addrspace(1)], [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE16_NS_2C2E, i32 0, inrange i32 0, i32 6), ptr addrspace(1) getelementptr inbounds ({ [7 x ptr addrspace(1)], [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE16_NS_2C2E, i32 0, inrange i32 0, i32 6), ptr addrspace(1) getelementptr inbounds ({ [7 x ptr addrspace(1)], [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE16_NS_2C2E, i32 0, inrange i32 1, i32 3), ptr addrspace(1) getelementptr inbounds ({ [7 x ptr addrspace(1)], [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE16_NS_2C2E, i32 0, inrange i32 2, i32 3), ptr addrspace(1) getelementptr inbounds ({ [5 x ptr addrspace(1)], [7 x ptr addrspace(1)], [4 x ptr addrspace(1)], [3 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTVN4Test1DE, i32 0, inrange i32 2, i32 3), ptr addrspace(1) getelementptr inbounds ({ [5 x ptr addrspace(1)], [7 x ptr addrspace(1)], [4 x ptr addrspace(1)], [3 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTVN4Test1DE, i32 0, inrange i32 1, i32 6), ptr addrspace(1) getelementptr inbounds ({ [5 x ptr addrspace(1)], [7 x ptr addrspace(1)], [4 x ptr addrspace(1)], [3 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTVN4Test1DE, i32 0, inrange i32 1, i32 6), ptr addrspace(1) getelementptr inbounds ({ [5 x ptr addrspace(1)], [7 x ptr addrspace(1)], [4 x ptr addrspace(1)], [3 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTVN4Test1DE, i32 0, inrange i32 3, i32 3), ptr addrspace(1) getelementptr inbounds ({ [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE64_NS_2V2E, i32 0, inrange i32 0, i32 3), ptr addrspace(1) getelementptr inbounds ({ [3 x ptr addrspace(1)], [4 x ptr addrspace(1)] }, ptr addrspace(1) @_ZTCN4Test1DE64_NS_2V2E, i32 0, inrange i32 1, i32 3)], comdat, align 8
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// CHECK: call void @_ZN4Test2V2C2Ev(ptr noundef nonnull align 8 dereferenceable(20) %2, ptr addrspace(1) noundef getelementptr inbounds ([13 x ptr addrspace(1)], ptr addrspace(1) @_ZTTN4Test1DE, i64 0, i64 11))
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// CHECK: call void @_ZN4Test2C1C2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this1, ptr addrspace(1) noundef getelementptr inbounds ([13 x ptr addrspace(1)], ptr addrspace(1) @_ZTTN4Test1DE, i64 0, i64 1))
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// CHECK: call void @_ZN4Test2C2C2Ev(ptr noundef nonnull align 8 dereferenceable(12) %3, ptr addrspace(1) noundef getelementptr inbounds ([13 x ptr addrspace(1)], ptr addrspace(1) @_ZTTN4Test1DE, i64 0, i64 3))
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// CHECK: define linkonce_odr void @_ZN4Test2V2C2Ev(ptr noundef nonnull align 8 dereferenceable(20) %this, ptr addrspace(1) noundef %vtt)
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// CHECK: define linkonce_odr void @_ZN4Test2C1C2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this, ptr addrspace(1) noundef %vtt)
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// CHECK: define linkonce_odr void @_ZN4Test2C2C2Ev(ptr noundef nonnull align 8 dereferenceable(12) %this, ptr addrspace(1) noundef %vtt)
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