69cd776e1e
arguments. * Adds 'nonnull' and 'dereferenceable(N)' to 'this' pointer arguments * Gates 'nonnull' on -f(no-)delete-null-pointer-checks * Introduces this-nonnull.cpp and microsoft-abi-this-nullable.cpp tests to explicitly test the behavior of this change * Refactors hundreds of over-constrained clang tests to permit these attributes, where needed * Updates Clang12 patch notes mentioning this change Reviewed-by: rsmith, jdoerfert Differential Revision: https://reviews.llvm.org/D17993
114 lines
5.2 KiB
C++
114 lines
5.2 KiB
C++
// RUN: %clang_cc1 %s -fno-rtti -triple=i686-pc-win32 -emit-llvm -o - | FileCheck --check-prefix=CHECK32 %s
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// RUN: %clang_cc1 %s -fno-rtti -triple=x86_64-pc-win32 -emit-llvm -o - | FileCheck --check-prefix=CHECK64 %s
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namespace byval_thunk {
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struct Agg {
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Agg();
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Agg(const Agg &);
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~Agg();
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int x;
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};
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struct A { virtual void foo(Agg x); };
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struct B { virtual void foo(Agg x); };
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struct C : A, B { C(); virtual void foo(Agg x); };
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C::C() {} // force emission
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// CHECK32-LABEL: define linkonce_odr dso_local x86_thiscallcc void @"?foo@C@byval_thunk@@W3AEXUAgg@2@@Z"
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// CHECK32: (%"struct.byval_thunk::C"* %this, <{ %"struct.byval_thunk::Agg" }>* inalloca %0)
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// CHECK32: getelementptr i8, i8* %{{.*}}, i32 -4
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// CHECK32: musttail call x86_thiscallcc void @"?foo@C@byval_thunk@@UAEXUAgg@2@@Z"
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// CHECK32: (%"struct.byval_thunk::C"* %{{.*}}, <{ %"struct.byval_thunk::Agg" }>* inalloca %0)
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// CHECK32-NEXT: ret void
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// CHECK64-LABEL: define linkonce_odr dso_local void @"?foo@C@byval_thunk@@W7EAAXUAgg@2@@Z"
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// CHECK64: (%"struct.byval_thunk::C"* {{[^,]*}} %this, %"struct.byval_thunk::Agg"* %x)
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// CHECK64: getelementptr i8, i8* %{{.*}}, i32 -8
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// CHECK64: call void @"?foo@C@byval_thunk@@UEAAXUAgg@2@@Z"
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// CHECK64: (%"struct.byval_thunk::C"* {{[^,]*}} %{{.*}}, %"struct.byval_thunk::Agg"* %x)
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// CHECK64-NOT: call
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// CHECK64: ret void
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}
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namespace stdcall_thunk {
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struct Agg {
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Agg();
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Agg(const Agg &);
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~Agg();
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int x;
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};
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struct A { virtual void __stdcall foo(Agg x); };
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struct B { virtual void __stdcall foo(Agg x); };
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struct C : A, B { C(); virtual void __stdcall foo(Agg x); };
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C::C() {} // force emission
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// CHECK32-LABEL: define linkonce_odr dso_local x86_stdcallcc void @"?foo@C@stdcall_thunk@@W3AGXUAgg@2@@Z"
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// CHECK32: (<{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>* inalloca %0)
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// CHECK32: %[[this_slot:[^ ]*]] = getelementptr inbounds <{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>, <{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>* %0, i32 0, i32 0
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// CHECK32: load %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::C"** %[[this_slot]]
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// CHECK32: getelementptr i8, i8* %{{.*}}, i32 -4
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// CHECK32: store %"struct.stdcall_thunk::C"* %{{.*}}, %"struct.stdcall_thunk::C"** %[[this_slot]]
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// CHECK32: musttail call x86_stdcallcc void @"?foo@C@stdcall_thunk@@UAGXUAgg@2@@Z"
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// CHECK32: (<{ %"struct.stdcall_thunk::C"*, %"struct.stdcall_thunk::Agg" }>* inalloca %0)
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// CHECK32-NEXT: ret void
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// CHECK64-LABEL: define linkonce_odr dso_local void @"?foo@C@stdcall_thunk@@W7EAAXUAgg@2@@Z"
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// CHECK64: (%"struct.stdcall_thunk::C"* {{[^,]*}} %this, %"struct.stdcall_thunk::Agg"* %x)
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// CHECK64: getelementptr i8, i8* %{{.*}}, i32 -8
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// CHECK64: call void @"?foo@C@stdcall_thunk@@UEAAXUAgg@2@@Z"
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// CHECK64: (%"struct.stdcall_thunk::C"* {{[^,]*}} %{{.*}}, %"struct.stdcall_thunk::Agg"* %x)
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// CHECK64-NOT: call
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// CHECK64: ret void
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}
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namespace sret_thunk {
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struct Agg {
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Agg();
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Agg(const Agg &);
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~Agg();
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int x;
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};
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struct A { virtual Agg __cdecl foo(Agg x); };
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struct B { virtual Agg __cdecl foo(Agg x); };
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struct C : A, B { C(); virtual Agg __cdecl foo(Agg x); };
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C::C() {} // force emission
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// CHECK32-LABEL: define linkonce_odr dso_local %"struct.sret_thunk::Agg"* @"?foo@C@sret_thunk@@W3AA?AUAgg@2@U32@@Z"
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// CHECK32: (<{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>* inalloca %0)
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// CHECK32: %[[this_slot:[^ ]*]] = getelementptr inbounds <{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>, <{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>* %0, i32 0, i32 0
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// CHECK32: load %"struct.sret_thunk::C"*, %"struct.sret_thunk::C"** %[[this_slot]]
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// CHECK32: getelementptr i8, i8* %{{.*}}, i32 -4
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// CHECK32: store %"struct.sret_thunk::C"* %{{.*}}, %"struct.sret_thunk::C"** %[[this_slot]]
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// CHECK32: %[[rv:[^ ]*]] = musttail call %"struct.sret_thunk::Agg"* @"?foo@C@sret_thunk@@UAA?AUAgg@2@U32@@Z"
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// CHECK32: (<{ %"struct.sret_thunk::C"*, %"struct.sret_thunk::Agg"*, %"struct.sret_thunk::Agg" }>* inalloca %0)
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// CHECK32-NEXT: ret %"struct.sret_thunk::Agg"* %[[rv]]
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// CHECK64-LABEL: define linkonce_odr dso_local void @"?foo@C@sret_thunk@@W7EAA?AUAgg@2@U32@@Z"
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// CHECK64: (%"struct.sret_thunk::C"* {{[^,]*}} %this, %"struct.sret_thunk::Agg"* noalias sret(%"struct.sret_thunk::Agg") align 4 %agg.result, %"struct.sret_thunk::Agg"* %x)
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// CHECK64: getelementptr i8, i8* %{{.*}}, i32 -8
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// CHECK64: call void @"?foo@C@sret_thunk@@UEAA?AUAgg@2@U32@@Z"
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// CHECK64: (%"struct.sret_thunk::C"* {{[^,]*}} %{{.*}}, %"struct.sret_thunk::Agg"* sret(%"struct.sret_thunk::Agg") align 4 %agg.result, %"struct.sret_thunk::Agg"* %x)
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// CHECK64-NOT: call
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// CHECK64: ret void
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}
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#if 0
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// FIXME: When we extend LLVM IR to allow forwarding of varargs through musttail
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// calls, use this test.
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namespace variadic_thunk {
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struct Agg {
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Agg();
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Agg(const Agg &);
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~Agg();
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int x;
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};
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struct A { virtual void foo(Agg x, ...); };
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struct B { virtual void foo(Agg x, ...); };
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struct C : A, B { C(); virtual void foo(Agg x, ...); };
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C::C() {} // force emission
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}
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#endif
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