f56cb520d8
Currently we are not emitting debug-info for all cases of structured bindings a C++17 feature which allows us to bind names to subobjects in an initializer. A structured binding is represented by a DecompositionDecl AST node and the binding are represented by a BindingDecl. It looks the original implementation only covered the tuple like case which be represented by a DeclRefExpr which contains a VarDecl. If the binding is to a subobject of the struct the binding will contain a MemberExpr and in the case of arrays it will contain an ArraySubscriptExpr. This PR adds support emitting debug-info for the MemberExpr and ArraySubscriptExpr cases as well as llvm and lldb tests for these cases as well as the tuple case. Differential Revision: https://reviews.llvm.org/D119178
20 lines
1.0 KiB
C++
20 lines
1.0 KiB
C++
// RUN: %clang_cc1 -emit-llvm -debug-info-kind=standalone -triple %itanium_abi_triple %s -o - | FileCheck %s
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// CHECK: call void @llvm.dbg.declare(metadata %struct.A* %{{[0-9]+}}, metadata !{{[0-9]+}}, metadata !DIExpression())
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// CHECK: call void @llvm.dbg.declare(metadata %struct.A* %{{[0-9]+}}, metadata !{{[0-9]+}}, metadata !DIExpression(DW_OP_plus_uconst, {{[0-9]+}}))
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// CHECK: call void @llvm.dbg.declare(metadata %struct.A* %{{[0-9]+}}, metadata !{{[0-9]+}}, metadata !DIExpression())
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// CHECK: call void @llvm.dbg.declare(metadata %struct.A** %{{[0-9]+}}, metadata !{{[0-9]+}}, metadata !DIExpression(DW_OP_deref))
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// CHECK: call void @llvm.dbg.declare(metadata %struct.A** %{{[0-9]+}}, metadata !{{[0-9]+}}, metadata !DIExpression(DW_OP_deref, DW_OP_plus_uconst, {{[0-9]+}}))
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// CHECK: call void @llvm.dbg.declare(metadata %struct.A** %{{[0-9]+}}, metadata !{{[0-9]+}}, metadata !DIExpression())
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struct A {
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int x;
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int y;
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};
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int f() {
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A a{10, 20};
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auto [x1, y1] = a;
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auto &[x2, y2] = a;
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return x1 + y1 + x2 + y2;
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}
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