LCOV - code coverage report
Current view: top level - lib/CodeGen/SelectionDAG - SDNodeDbgValue.h (source / functions) Hit Total Coverage
Test: llvm-toolchain.info Lines: 11 11 100.0 %
Date: 2018-02-22 04:41:24 Functions: 0 0 -
Legend: Lines: hit not hit

          Line data    Source code
       1             : //===-- llvm/CodeGen/SDNodeDbgValue.h - SelectionDAG dbg_value --*- C++ -*-===//
       2             : //
       3             : //                     The LLVM Compiler Infrastructure
       4             : //
       5             : // This file is distributed under the University of Illinois Open Source
       6             : // License. See LICENSE.TXT for details.
       7             : //
       8             : //===----------------------------------------------------------------------===//
       9             : //
      10             : // This file declares the SDDbgValue class.
      11             : //
      12             : //===----------------------------------------------------------------------===//
      13             : 
      14             : #ifndef LLVM_LIB_CODEGEN_SELECTIONDAG_SDNODEDBGVALUE_H
      15             : #define LLVM_LIB_CODEGEN_SELECTIONDAG_SDNODEDBGVALUE_H
      16             : 
      17             : #include "llvm/IR/DebugLoc.h"
      18             : #include "llvm/Support/DataTypes.h"
      19             : #include <utility>
      20             : 
      21             : namespace llvm {
      22             : 
      23             : class DIVariable;
      24             : class DIExpression;
      25             : class SDNode;
      26             : class Value;
      27             : 
      28             : /// Holds the information from a dbg_value node through SDISel.
      29             : /// We do not use SDValue here to avoid including its header.
      30             : class SDDbgValue {
      31             : public:
      32             :   enum DbgValueKind {
      33             :     SDNODE = 0,             ///< Value is the result of an expression.
      34             :     CONST = 1,              ///< Value is a constant.
      35             :     FRAMEIX = 2             ///< Value is contents of a stack location.
      36             :   };
      37             : private:
      38             :   union {
      39             :     struct {
      40             :       SDNode *Node;         ///< Valid for expressions.
      41             :       unsigned ResNo;       ///< Valid for expressions.
      42             :     } s;
      43             :     const Value *Const;     ///< Valid for constants.
      44             :     unsigned FrameIx;       ///< Valid for stack objects.
      45             :   } u;
      46             :   DIVariable *Var;
      47             :   DIExpression *Expr;
      48             :   DebugLoc DL;
      49             :   unsigned Order;
      50             :   enum DbgValueKind kind;
      51             :   bool IsIndirect;
      52             :   bool Invalid = false;
      53             : 
      54             : public:
      55             :   /// Constructor for non-constants.
      56             :   SDDbgValue(DIVariable *Var, DIExpression *Expr, SDNode *N, unsigned R,
      57             :              bool indir, DebugLoc dl, unsigned O)
      58       29574 :       : Var(Var), Expr(Expr), DL(std::move(dl)), Order(O), IsIndirect(indir) {
      59       14787 :     kind = SDNODE;
      60       14787 :     u.s.Node = N;
      61       14787 :     u.s.ResNo = R;
      62             :   }
      63             : 
      64             :   /// Constructor for constants.
      65             :   SDDbgValue(DIVariable *Var, DIExpression *Expr, const Value *C, DebugLoc dl,
      66             :              unsigned O)
      67       18190 :       : Var(Var), Expr(Expr), DL(std::move(dl)), Order(O), IsIndirect(false) {
      68        9095 :     kind = CONST;
      69        9095 :     u.Const = C;
      70             :   }
      71             : 
      72             :   /// Constructor for frame indices.
      73             :   SDDbgValue(DIVariable *Var, DIExpression *Expr, unsigned FI, DebugLoc dl,
      74             :              unsigned O)
      75        8006 :       : Var(Var), Expr(Expr), DL(std::move(dl)), Order(O), IsIndirect(false) {
      76        4003 :     kind = FRAMEIX;
      77        4003 :     u.FrameIx = FI;
      78             :   }
      79             : 
      80             :   /// Returns the kind.
      81             :   DbgValueKind getKind() const { return kind; }
      82             : 
      83             :   /// Returns the DIVariable pointer for the variable.
      84             :   DIVariable *getVariable() const { return Var; }
      85             : 
      86             :   /// Returns the DIExpression pointer for the expression.
      87             :   DIExpression *getExpression() const { return Expr; }
      88             : 
      89             :   /// Returns the SDNode* for a register ref
      90             :   SDNode *getSDNode() const { assert (kind==SDNODE); return u.s.Node; }
      91             : 
      92             :   /// Returns the ResNo for a register ref
      93             :   unsigned getResNo() const { assert (kind==SDNODE); return u.s.ResNo; }
      94             : 
      95             :   /// Returns the Value* for a constant
      96             :   const Value *getConst() const { assert (kind==CONST); return u.Const; }
      97             : 
      98             :   /// Returns the FrameIx for a stack object
      99             :   unsigned getFrameIx() const { assert (kind==FRAMEIX); return u.FrameIx; }
     100             : 
     101             :   /// Returns whether this is an indirect value.
     102             :   bool isIndirect() const { return IsIndirect; }
     103             : 
     104             :   /// Returns the DebugLoc.
     105             :   DebugLoc getDebugLoc() const { return DL; }
     106             : 
     107             :   /// Returns the SDNodeOrder.  This is the order of the preceding node in the
     108             :   /// input.
     109             :   unsigned getOrder() const { return Order; }
     110             : 
     111             :   /// setIsInvalidated / isInvalidated - Setter / getter of the "Invalidated"
     112             :   /// property. A SDDbgValue is invalid if the SDNode that produces the value is
     113             :   /// deleted.
     114       30885 :   void setIsInvalidated() { Invalid = true; }
     115             :   bool isInvalidated() const { return Invalid; }
     116             : };
     117             : 
     118             : } // end llvm namespace
     119             : 
     120             : #endif

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