-//===---- 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 {
class MDNode;
-
- /// DebugLoc - Debug location id. This is carried by SDNode and MachineInstr
- /// to index into a vector of unique debug location tuples.
+ 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 {
- unsigned Idx;
-
+ /// 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; }
+ 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);
+
+ /// 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 DebugLoc &DL) const {
+ return LineCol == DL.LineCol && ScopeIdx == DL.ScopeIdx;
+ }
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;
-
- DebugLocTracker() {}
- };
-
} // end namespace llvm
#endif /* LLVM_DEBUGLOC_H */