550b62cbcb
Create and add generalized type identifier metadata to indirect calls, and to functions which are potential indirect call targets. The functions carry the !type metadata. The indirect callsites carry a list of !type metadata values under !callee_type metadata. RFC: https://discourse.llvm.org/t/rfc-call-graph-information-from-clang-llvm-for-c-c/88255
118 lines
4.2 KiB
C++
118 lines
4.2 KiB
C++
// Tests that we assign appropriate identifiers to indirect calls and targets
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// specifically for C++ templates.
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// RUN: %clang_cc1 -triple x86_64-unknown-linux -fexperimental-call-graph-section \
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// RUN: -emit-llvm -o %t %s
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// RUN: FileCheck --check-prefix=FT %s < %t
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// RUN: FileCheck --check-prefix=CST %s < %t
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////////////////////////////////////////////////////////////////////////////////
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// Class definitions and template classes (check for indirect target metadata)
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class Cls1 {};
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// Cls2 is instantiated with T=Cls1 in foo(). Following checks are for this
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// instantiation.
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template <class T>
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class Cls2 {
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public:
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// FT-LABEL: define {{.*}} void @_ZN4Cls2I4Cls1E2f1Ev(
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// FT-SAME: {{.*}} !type [[F_TCLS2F1:![0-9]+]]
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void f1() {}
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// FT-LABEL: define {{.*}} void @_ZN4Cls2I4Cls1E2f2ES0_(
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// FT-SAME: {{.*}} !type [[F_TCLS2F2:![0-9]+]]
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void f2(T a) {}
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// FT-LABEL: define {{.*}} void @_ZN4Cls2I4Cls1E2f3EPS0_(
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// FT-SAME: {{.*}} !type [[F_TCLS2F3:![0-9]+]]
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void f3(T *a) {}
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// FT-LABEL: define {{.*}} void @_ZN4Cls2I4Cls1E2f4EPKS0_(
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// FT-SAME: {{.*}} !type [[F_TCLS2F4:![0-9]+]]
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void f4(const T *a) {}
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// FT-LABEL: define {{.*}} void @_ZN4Cls2I4Cls1E2f5ERS0_(
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// FT-SAME: {{.*}} !type [[F_TCLS2F5:![0-9]+]]
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void f5(T &a) {}
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// FT-LABEL: define {{.*}} void @_ZN4Cls2I4Cls1E2f6ERKS0_(
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// FT-SAME: {{.*}} !type [[F_TCLS2F6:![0-9]+]]
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void f6(const T &a) {}
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// Mixed type function pointer member
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T *(*fp)(T a, T *b, const T *c, T &d, const T &e);
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};
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// FT: [[F_TCLS2F1]] = !{i64 0, !"_ZTSFvvE.generalized"}
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// FT: [[F_TCLS2F2]] = !{i64 0, !"_ZTSFv4Cls1E.generalized"}
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// FT: [[F_TCLS2F3]] = !{i64 0, !"_ZTSFvP4Cls1E.generalized"}
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// FT: [[F_TCLS2F4]] = !{i64 0, !"_ZTSFvPK4Cls1E.generalized"}
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// FT: [[F_TCLS2F5]] = !{i64 0, !"_ZTSFvR4Cls1E.generalized"}
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// FT: [[F_TCLS2F6]] = !{i64 0, !"_ZTSFvRK4Cls1E.generalized"}
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////////////////////////////////////////////////////////////////////////////////
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// Callsites (check for indirect callsite operand bundles)
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template <class T>
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T *T_func(T a, T *b, const T *c, T &d, const T &e) { return b; }
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// CST-LABEL: define {{.*}} @_Z3foov
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// CST-SAME: {{.*}} !type [[F_TCLS2F1:![0-9]+]]
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void foo() {
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// Methods for Cls2<Cls1> is checked above within the template description.
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Cls2<Cls1> Obj;
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Obj.fp = T_func<Cls1>;
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Cls1 Cls1Obj;
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// CST: call noundef ptr %{{.*}}, !callee_type [[F_TFUNC_CLS1_CT:![0-9]+]]
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Obj.fp(Cls1Obj, &Cls1Obj, &Cls1Obj, Cls1Obj, Cls1Obj);
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// Make indirect calls to Cls2's member methods
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auto fp_f1 = &Cls2<Cls1>::f1;
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auto fp_f2 = &Cls2<Cls1>::f2;
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auto fp_f3 = &Cls2<Cls1>::f3;
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auto fp_f4 = &Cls2<Cls1>::f4;
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auto fp_f5 = &Cls2<Cls1>::f5;
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auto fp_f6 = &Cls2<Cls1>::f6;
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auto *Obj2Ptr = &Obj;
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// CST: call void %{{.*}}, !callee_type [[F_TCLS2F1_CT:![0-9]+]]
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(Obj2Ptr->*fp_f1)();
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// CST: call void %{{.*}}, !callee_type [[F_TCLS2F2_CT:![0-9]+]]
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(Obj2Ptr->*fp_f2)(Cls1Obj);
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// CST: call void %{{.*}}, !callee_type [[F_TCLS2F3_CT:![0-9]+]]
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(Obj2Ptr->*fp_f3)(&Cls1Obj);
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// CST: call void %{{.*}}, !callee_type [[F_TCLS2F4_CT:![0-9]+]]
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(Obj2Ptr->*fp_f4)(&Cls1Obj);
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// CST: call void %{{.*}}, !callee_type [[F_TCLS2F5_CT:![0-9]+]]
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(Obj2Ptr->*fp_f5)(Cls1Obj);
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// CST: call void %{{.*}}, !callee_type [[F_TCLS2F6_CT:![0-9]+]]
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(Obj2Ptr->*fp_f6)(Cls1Obj);
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}
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// CST-LABEL: define {{.*}} @_Z6T_funcI4Cls1EPT_S1_S2_PKS1_RS1_RS3_(
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// CST-SAME: {{.*}} !type [[F_TFUNC_CLS1:![0-9]+]]
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// CST: [[F_TCLS2F1]] = !{i64 0, !"_ZTSFvvE.generalized"}
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// CST: [[F_TFUNC_CLS1_CT]] = !{[[F_TFUNC_CLS1:![0-9]+]]}
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// CST: [[F_TFUNC_CLS1]] = !{i64 0, !"_ZTSFP4Cls1S_S0_PKS_RS_RS1_E.generalized"}
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// CST: [[F_TCLS2F1_CT]] = !{[[F_TCLS2F1:![0-9]+]]}
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// CST: [[F_TCLS2F2_CT]] = !{[[F_TCLS2F2:![0-9]+]]}
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// CST: [[F_TCLS2F2]] = !{i64 0, !"_ZTSFv4Cls1E.generalized"}
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// CST: [[F_TCLS2F3_CT]] = !{[[F_TCLS2F3:![0-9]+]]}
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// CST: [[F_TCLS2F3]] = !{i64 0, !"_ZTSFvP4Cls1E.generalized"}
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// CST: [[F_TCLS2F4_CT]] = !{[[F_TCLS2F4:![0-9]+]]}
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// CST: [[F_TCLS2F4]] = !{i64 0, !"_ZTSFvPK4Cls1E.generalized"}
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// CST: [[F_TCLS2F5_CT]] = !{[[F_TCLS2F5:![0-9]+]]}
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// CST: [[F_TCLS2F5]] = !{i64 0, !"_ZTSFvR4Cls1E.generalized"}
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// CST: [[F_TCLS2F6_CT]] = !{[[F_TCLS2F6:![0-9]+]]}
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// CST: [[F_TCLS2F6]] = !{i64 0, !"_ZTSFvRK4Cls1E.generalized"}
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