1 | //===- DWARFLocationExpression.h --------------------------------*- C++ -*-===// |
2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #ifndef LLVM_DEBUGINFO_DWARF_DWARFLOCATIONEXPRESSION_H |
10 | #define LLVM_DEBUGINFO_DWARF_DWARFLOCATIONEXPRESSION_H |
11 | |
12 | #include "llvm/DebugInfo/DWARF/DWARFAddressRange.h" |
13 | |
14 | namespace llvm { |
15 | |
16 | class raw_ostream; |
17 | |
18 | /// Represents a single DWARF expression, whose value is location-dependent. |
19 | /// Typically used in DW_AT_location attributes to describe the location of |
20 | /// objects. |
21 | struct DWARFLocationExpression { |
22 | /// The address range in which this expression is valid. std::nullopt denotes a |
23 | /// default entry which is valid in addresses not covered by other location |
24 | /// expressions, or everywhere if there are no other expressions. |
25 | std::optional<DWARFAddressRange> Range; |
26 | |
27 | /// The expression itself. |
28 | SmallVector<uint8_t, 4> Expr; |
29 | }; |
30 | |
31 | inline bool operator==(const DWARFLocationExpression &L, |
32 | const DWARFLocationExpression &R) { |
33 | return L.Range == R.Range && L.Expr == R.Expr; |
34 | } |
35 | |
36 | inline bool operator!=(const DWARFLocationExpression &L, |
37 | const DWARFLocationExpression &R) { |
38 | return !(L == R); |
39 | } |
40 | |
41 | raw_ostream &operator<<(raw_ostream &OS, const DWARFLocationExpression &Loc); |
42 | |
43 | /// Represents a set of absolute location expressions. |
44 | using DWARFLocationExpressionsVector = std::vector<DWARFLocationExpression>; |
45 | |
46 | } // end namespace llvm |
47 | |
48 | #endif // LLVM_DEBUGINFO_DWARF_DWARFLOCATIONEXPRESSION_H |
49 | |