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Diffstat (limited to 'include/llvm/DebugInfo/DWARF/DWARFAddressRange.h')
-rw-r--r-- | include/llvm/DebugInfo/DWARF/DWARFAddressRange.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/include/llvm/DebugInfo/DWARF/DWARFAddressRange.h b/include/llvm/DebugInfo/DWARF/DWARFAddressRange.h new file mode 100644 index 000000000000..5a7df5c353e8 --- /dev/null +++ b/include/llvm/DebugInfo/DWARF/DWARFAddressRange.h @@ -0,0 +1,68 @@ +//===- DWARFAddressRange.h --------------------------------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_DEBUGINFO_DWARF_DWARFADDRESSRANGE_H +#define LLVM_DEBUGINFO_DWARF_DWARFADDRESSRANGE_H + +#include "llvm/DebugInfo/DIContext.h" +#include <cstdint> +#include <tuple> +#include <vector> + +namespace llvm { + +class raw_ostream; + +struct DWARFAddressRange { + uint64_t LowPC; + uint64_t HighPC; + uint64_t SectionIndex; + + DWARFAddressRange() = default; + + /// Used for unit testing. + DWARFAddressRange(uint64_t LowPC, uint64_t HighPC, uint64_t SectionIndex = 0) + : LowPC(LowPC), HighPC(HighPC), SectionIndex(SectionIndex) {} + + /// Returns true if LowPC is smaller or equal to HighPC. This accounts for + /// dead-stripped ranges. + bool valid() const { return LowPC <= HighPC; } + + /// Returns true if [LowPC, HighPC) intersects with [RHS.LowPC, RHS.HighPC). + bool intersects(const DWARFAddressRange &RHS) const { + assert(valid() && RHS.valid()); + // Empty ranges can't intersect. + if (LowPC == HighPC || RHS.LowPC == RHS.HighPC) + return false; + return LowPC < RHS.HighPC && RHS.LowPC < HighPC; + } + + /// Returns true if [LowPC, HighPC) fully contains [RHS.LowPC, RHS.HighPC). + bool contains(const DWARFAddressRange &RHS) const { + assert(valid() && RHS.valid()); + return LowPC <= RHS.LowPC && RHS.HighPC <= HighPC; + } + + void dump(raw_ostream &OS, uint32_t AddressSize, + DIDumpOptions DumpOpts = {}) const; +}; + +static inline bool operator<(const DWARFAddressRange &LHS, + const DWARFAddressRange &RHS) { + return std::tie(LHS.LowPC, LHS.HighPC) < std::tie(RHS.LowPC, RHS.HighPC); +} + +raw_ostream &operator<<(raw_ostream &OS, const DWARFAddressRange &R); + +/// DWARFAddressRangesVector - represents a set of absolute address ranges. +using DWARFAddressRangesVector = std::vector<DWARFAddressRange>; + +} // end namespace llvm + +#endif // LLVM_DEBUGINFO_DWARF_DWARFADDRESSRANGE_H |