IR: Split Metadata from Value

[oota-llvm.git] / include / llvm / IR / DebugLoc.h

diff --git a/include/llvm/IR/DebugLoc.h b/include/llvm/IR/DebugLoc.h
index 3d969a8b7532c411b5dbe058b34158b32e3b7452..b238b0d56efe9cb7b999f0334539ef44cf8e141d 100644 (file)
--- a/include/llvm/IR/DebugLoc.h
+++ b/include/llvm/IR/DebugLoc.h
@@ -16,50 +16,40 @@
 #define LLVM_IR_DEBUGLOC_H
 
 #include "llvm/Support/DataTypes.h"
+#include "llvm/IR/TrackingMDRef.h"
 
 namespace llvm {
-  template <typename T> struct DenseMapInfo;
-  class MDNode;
+
   class LLVMContext;
   class raw_ostream;
+  class MDNode;
 
   /// 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;
-    }
+    TrackingMDNodeRef Loc;
 
-    /// 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;
+  public:
+    DebugLoc() {}
+    DebugLoc(DebugLoc &&X) : Loc(std::move(X.Loc)) {}
+    DebugLoc(const DebugLoc &X) : Loc(X.Loc) {}
+    DebugLoc &operator=(DebugLoc &&X) {
+      Loc = std::move(X.Loc);
+      return *this;
+    }
+    DebugLoc &operator=(const DebugLoc &X) {
+      Loc = X.Loc;
+      return *this;
     }
 
-    /// 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.
-    uint32_t LineCol;
-
-    /// ScopeIdx - This is an opaque ID# for Scope/InlinedAt information,
-    /// decoded by LLVMContext.  0 is unknown.
-    int ScopeIdx;
-  public:
-    DebugLoc() : LineCol(0), ScopeIdx(0) {}  // Defaults to unknown.
+    /// \brief Check whether this has a trivial destructor.
+    bool hasTrivialDestructor() const { return Loc.hasTrivialDestructor(); }
 
     /// 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 = nullptr);
+    static DebugLoc get(unsigned Line, unsigned Col, MDNode *Scope,
+                        MDNode *InlinedAt = nullptr);
 
     /// getFromDILocation - Translate the DILocation quad into a DebugLoc.
     static DebugLoc getFromDILocation(MDNode *N);
@@ -68,56 +58,54 @@ namespace llvm {
     static DebugLoc getFromDILexicalBlock(MDNode *N);
 
     /// isUnknown - Return true if this is an unknown location.
-    bool isUnknown() const { return ScopeIdx == 0; }
+    bool isUnknown() const { return !Loc; }
 
-    unsigned getLine() const {
-      return (LineCol << 8) >> 8;  // Mask out column.
-    }
-
-    unsigned getCol() const {
-      return LineCol >> 24;
-    }
+    unsigned getLine() const;
+    unsigned getCol() const;
 
     /// getScope - This returns the scope pointer for this DebugLoc, or null if
     /// invalid.
-    MDNode *getScope(const LLVMContext &Ctx) const;
+    MDNode *getScope() const;
+    MDNode *getScope(const LLVMContext &) const { return getScope(); }
 
     /// getInlinedAt - This returns the InlinedAt pointer for this DebugLoc, or
     /// null if invalid or not present.
-    MDNode *getInlinedAt(const LLVMContext &Ctx) const;
+    MDNode *getInlinedAt() const;
+    MDNode *getInlinedAt(const LLVMContext &) const { return getInlinedAt(); }
 
     /// getScopeAndInlinedAt - Return both the Scope and the InlinedAt values.
+    void getScopeAndInlinedAt(MDNode *&Scope, MDNode *&IA) const;
     void getScopeAndInlinedAt(MDNode *&Scope, MDNode *&IA,
-                              const LLVMContext &Ctx) const;
+                              const LLVMContext &) const {
+      return getScopeAndInlinedAt(Scope, IA);
+    }
 
     /// getScopeNode - Get MDNode for DebugLoc's scope, or null if invalid.
-    MDNode *getScopeNode(const LLVMContext &Ctx) const;
+    MDNode *getScopeNode() const;
+    MDNode *getScopeNode(const LLVMContext &) const { return getScopeNode(); }
 
     // getFnDebugLoc - Walk up the scope chain of given debug loc and find line
     // number info for the function.
-    DebugLoc getFnDebugLoc(const LLVMContext &Ctx) const;
+    DebugLoc getFnDebugLoc() const;
+    DebugLoc getFnDebugLoc(const LLVMContext &) const {
+      return getFnDebugLoc();
+    }
 
     /// getAsMDNode - This method converts the compressed DebugLoc node into a
     /// DILocation compatible MDNode.
-    MDNode *getAsMDNode(const LLVMContext &Ctx) const;
+    MDNode *getAsMDNode() const;
+    MDNode *getAsMDNode(LLVMContext &) const { return getAsMDNode(); }
 
-    bool operator==(const DebugLoc &DL) const {
-      return LineCol == DL.LineCol && ScopeIdx == DL.ScopeIdx;
-    }
+    bool operator==(const DebugLoc &DL) const { return Loc == DL.Loc; }
     bool operator!=(const DebugLoc &DL) const { return !(*this == DL); }
 
-    void dump(const LLVMContext &Ctx) const;
+    void dump() const;
+    void dump(const LLVMContext &) const { dump(); }
     /// \brief prints source location /path/to/file.exe:line:col @[inlined at]
-    void print(const LLVMContext &Ctx, raw_ostream &OS) const;
+    void print(raw_ostream &OS) const;
+    void print(const LLVMContext &, raw_ostream &OS) const { print(OS); }
   };
 
-  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_SUPPORT_DEBUGLOC_H */