diff options
Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h | 37 |
1 files changed, 36 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h index 36502225c29..57bb8d0229d 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h +++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h @@ -203,6 +203,30 @@ struct SymbolCU { DwarfCompileUnit *CU; }; +/// Identify a debugger for "tuning" the debug info. +/// +/// The "debugger tuning" concept allows us to present a more intuitive +/// interface that unpacks into different sets of defaults for the various +/// individual feature-flag settings, that suit the preferences of the +/// various debuggers. However, it's worth remembering that debuggers are +/// not the only consumers of debug info, and some variations in DWARF might +/// better be treated as target/platform issues. Fundamentally, +/// o if the feature is useful (or not) to a particular debugger, regardless +/// of the target, that's a tuning decision; +/// o if the feature is useful (or not) on a particular platform, regardless +/// of the debugger, that's a target decision. +/// It's not impossible to see both factors in some specific case. +/// +/// The "tuning" should be used to set defaults for individual feature flags +/// in DwarfDebug; if a given feature has a more specific command-line option, +/// that option should take precedence over the tuning. +enum class DebuggerKind { + Default, // No specific tuning requested. + GDB, // Tune debug info for gdb. + LLDB, // Tune debug info for lldb. + SCE // Tune debug info for SCE targets (e.g. PS4). +}; + /// Collects and handles dwarf debug information. class DwarfDebug : public AsmPrinterHandler { /// Target of Dwarf emission. @@ -338,7 +362,6 @@ class DwarfDebug : public AsmPrinterHandler { /// True iff there are multiple CUs in this module. bool SingleCU; bool IsDarwin; - bool IsPS4; AddressPool AddrPool; @@ -349,6 +372,9 @@ class DwarfDebug : public AsmPrinterHandler { DenseMap<const Function *, DISubprogram *> FunctionDIs; + // Identify a debugger for "tuning" the debug info. + DebuggerKind DebuggerTuning; + MCDwarfDwoLineTable *getDwoLineTable(const DwarfCompileUnit &); const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() { @@ -565,6 +591,15 @@ public: /// standard DW_OP_form_tls_address opcode bool useGNUTLSOpcode() const { return UseGNUTLSOpcode; } + /// \defgroup DebuggerTuning Predicates to tune DWARF for a given debugger. + /// + /// Returns whether we are "tuning" for a given debugger. + /// @{ + bool tuneForGDB() const { return DebuggerTuning == DebuggerKind::GDB; } + bool tuneForLLDB() const { return DebuggerTuning == DebuggerKind::LLDB; } + bool tuneForSCE() const { return DebuggerTuning == DebuggerKind::SCE; } + /// @} + // Experimental DWARF5 features. /// Returns whether or not to emit tables that dwarf consumers can |
