//
// This file defines a number of light weight data structures used
// to describe and track debug location information.
-//
+//
//===----------------------------------------------------------------------===//
-#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;
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 NewDebugLoc {
+ 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;
+ }
+
+ /// 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:
- NewDebugLoc() : LineCol(0), ScopeIdx(0) {} // Defaults to unknown.
-
- static NewDebugLoc get(unsigned Line, unsigned Col,
- MDNode *Scope, MDNode *InlinedAt);
-
- /// getFromDILocation - Translate the DILocation quad into a NewDebugLoc.
- static NewDebugLoc getFromDILocation(MDNode *N);
-
+ 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.
}
-
+
unsigned getCol() const {
return LineCol >> 24;
}
-
+
/// 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 NewDebugLoc &DL) const {
+
+ bool operator==(const DebugLoc &DL) const {
return LineCol == DL.LineCol && ScopeIdx == DL.ScopeIdx;
}
- bool operator!=(const NewDebugLoc &DL) const { return !(*this == 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;
- 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); }
- };
- /// DebugLocTracker - This class tracks debug location information.
- ///
- struct DebugLocTracker {
- /// DebugLocations - A vector of unique DebugLocTuple's.
- ///
- std::vector<MDNode *> DebugLocations;
-
- /// DebugIdMap - This maps DebugLocTuple's to indices into the
- /// DebugLocations vector.
- DenseMap<MDNode *, unsigned> DebugIdMap;
+ void dump(const LLVMContext &Ctx) const;
+ };
- 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 */