-//===---- llvm/DebugLoc.h - Debug Location Information ----------*- C++ -*-===//
+//===---- llvm/Support/DebugLoc.h - Debug Location Information --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_DEBUGLOC_H
-#define LLVM_DEBUGLOC_H
-
-#include "llvm/ADT/DenseMap.h"
-#include <vector>
+#ifndef LLVM_SUPPORT_DEBUGLOC_H
+#define LLVM_SUPPORT_DEBUGLOC_H
namespace llvm {
+ template <typename T> struct DenseMapInfo;
class MDNode;
-
- /// DebugLocTuple - Debug location tuple of filename id, line and column.
- ///
- struct DebugLocTuple {
- MDNode *CompileUnit;
- unsigned Line, Col;
-
- DebugLocTuple()
- : CompileUnit(0), Line(~0U), Col(~0U) {};
-
- DebugLocTuple(MDNode *n, unsigned l, unsigned c)
- : CompileUnit(n), Line(l), Col(c) {};
-
- bool operator==(const DebugLocTuple &DLT) const {
- return CompileUnit == DLT.CompileUnit &&
- Line == DLT.Line && Col == DLT.Col;
- }
- bool operator!=(const DebugLocTuple &DLT) const {
- return !(*this == DLT);
+ class LLVMContext;
+
+ /// DebugLoc - Debug location id. This is carried by Instruction, SDNode,
+ /// and MachineInstr to compactly encode file/line/scope information for an
+ /// operation.
+ class DebugLoc {
+ friend struct DenseMapInfo<DebugLoc>;
+
+ /// getEmptyKey() - A private constructor that returns an unknown that is
+ /// not equal to the tombstone key or DebugLoc().
+ static DebugLoc getEmptyKey() {
+ DebugLoc DL;
+ DL.LineCol = 1;
+ return DL;
}
- };
- /// DebugLoc - Debug location id. This is carried by SDNode and MachineInstr
- /// to index into a vector of unique debug location tuples.
- class DebugLoc {
- unsigned Idx;
+ /// getTombstoneKey() - A private constructor that returns an unknown that
+ /// is not equal to the empty key or DebugLoc().
+ static DebugLoc getTombstoneKey() {
+ DebugLoc DL;
+ DL.LineCol = 2;
+ return DL;
+ }
+ /// LineCol - This 32-bit value encodes the line and column number for the
+ /// location, encoded as 24-bits for line and 8 bits for col. A value of 0
+ /// for either means unknown.
+ unsigned LineCol;
+
+ /// ScopeIdx - This is an opaque ID# for Scope/InlinedAt information,
+ /// decoded by LLVMContext. 0 is unknown.
+ int ScopeIdx;
public:
- DebugLoc() : Idx(~0U) {} // Defaults to invalid.
-
- static DebugLoc getUnknownLoc() { DebugLoc L; L.Idx = ~0U; return L; }
- static DebugLoc get(unsigned idx) { DebugLoc L; L.Idx = idx; return L; }
-
- unsigned getIndex() const { return Idx; }
-
- /// isUnknown - Return true if there is no debug info for the SDNode /
- /// MachineInstr.
- bool isUnknown() const { return Idx == ~0U; }
-
- bool operator==(const DebugLoc &DL) const { return Idx == DL.Idx; }
- bool operator!=(const DebugLoc &DL) const { return !(*this == DL); }
- };
-
- // Partially specialize DenseMapInfo for DebugLocTyple.
- template<> struct DenseMapInfo<DebugLocTuple> {
- static inline DebugLocTuple getEmptyKey() {
- return DebugLocTuple(0, ~0U, ~0U);
+ DebugLoc() : LineCol(0), ScopeIdx(0) {} // Defaults to unknown.
+
+ /// get - Get a new DebugLoc that corresponds to the specified line/col
+ /// scope/inline location.
+ static DebugLoc get(unsigned Line, unsigned Col,
+ MDNode *Scope, MDNode *InlinedAt = 0);
+
+ /// getFromDILocation - Translate the DILocation quad into a DebugLoc.
+ static DebugLoc getFromDILocation(MDNode *N);
+
+ /// getFromDILexicalBlock - Translate the DILexicalBlock into a DebugLoc.
+ static DebugLoc getFromDILexicalBlock(MDNode *N);
+
+ /// isUnknown - Return true if this is an unknown location.
+ bool isUnknown() const { return ScopeIdx == 0; }
+
+ unsigned getLine() const {
+ return (LineCol << 8) >> 8; // Mask out column.
}
- static inline DebugLocTuple getTombstoneKey() {
- return DebugLocTuple((MDNode*)~1U, ~1U, ~1U);
+
+ unsigned getCol() const {
+ return LineCol >> 24;
}
- static unsigned getHashValue(const DebugLocTuple &Val) {
- return DenseMapInfo<MDNode*>::getHashValue(Val.CompileUnit) ^
- DenseMapInfo<unsigned>::getHashValue(Val.Line) ^
- DenseMapInfo<unsigned>::getHashValue(Val.Col);
- }
- static bool isEqual(const DebugLocTuple &LHS, const DebugLocTuple &RHS) {
- return LHS.CompileUnit == RHS.CompileUnit &&
- LHS.Line == RHS.Line &&
- LHS.Col == RHS.Col;
+
+ /// getScope - This returns the scope pointer for this DebugLoc, or null if
+ /// invalid.
+ MDNode *getScope(const LLVMContext &Ctx) const;
+
+ /// getInlinedAt - This returns the InlinedAt pointer for this DebugLoc, or
+ /// null if invalid or not present.
+ MDNode *getInlinedAt(const LLVMContext &Ctx) const;
+
+ /// getScopeAndInlinedAt - Return both the Scope and the InlinedAt values.
+ void getScopeAndInlinedAt(MDNode *&Scope, MDNode *&IA,
+ const LLVMContext &Ctx) const;
+
+
+ /// getAsMDNode - This method converts the compressed DebugLoc node into a
+ /// DILocation compatible MDNode.
+ MDNode *getAsMDNode(const LLVMContext &Ctx) const;
+
+ bool operator==(const DebugLoc &DL) const {
+ return LineCol == DL.LineCol && ScopeIdx == DL.ScopeIdx;
}
+ bool operator!=(const DebugLoc &DL) const { return !(*this == DL); }
- static bool isPod() { return true; }
+ void dump(const LLVMContext &Ctx) const;
};
- /// DebugLocTracker - This class tracks debug location information.
- ///
- struct DebugLocTracker {
- /// DebugLocations - A vector of unique DebugLocTuple's.
- ///
- std::vector<DebugLocTuple> DebugLocations;
-
- /// DebugIdMap - This maps DebugLocTuple's to indices into the
- /// DebugLocations vector.
- DenseMap<DebugLocTuple, unsigned> DebugIdMap;
-
- DebugLocTracker() {}
+ template <>
+ struct DenseMapInfo<DebugLoc> {
+ static DebugLoc getEmptyKey() { return DebugLoc::getEmptyKey(); }
+ static DebugLoc getTombstoneKey() { return DebugLoc::getTombstoneKey(); }
+ static unsigned getHashValue(const DebugLoc &Key);
+ static bool isEqual(DebugLoc LHS, DebugLoc RHS) { return LHS == RHS; }
};
-
} // end namespace llvm
-#endif /* LLVM_DEBUGLOC_H */
+#endif /* LLVM_SUPPORT_DEBUGLOC_H */
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