llvm-6502/include/llvm/Support/DebugLoc.h
Chris Lattner de4845c163 Switch the code generator (except the JIT) onto the new DebugLoc
representation.  This eliminates the 'DILocation' MDNodes for 
file/line/col tuples from -O0 -g codegen.

This remove the old DebugLoc class, making it a typedef for DebugLoc,
I'll rename NewDebugLoc next.

I didn't update the JIT to use the new apis, so it will continue to
work, but be as slow as before.  Someone should eventually do this
or, better yet, rip out the JIT debug info stuff and build the JIT
on top of MC.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100209 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-02 19:42:39 +00:00

93 lines
3.0 KiB
C++

//===---- llvm/Support/DebugLoc.h - Debug Location Information --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// 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>
namespace llvm {
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 {
/// 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.
/// get - Get a new DebugLoc that corresponds to the specified line/col
/// scope/inline location.
static NewDebugLoc get(unsigned Line, unsigned Col,
MDNode *Scope, MDNode *InlinedAt = 0);
/// getFromDILocation - Translate the DILocation quad into a NewDebugLoc.
static NewDebugLoc 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 NewDebugLoc &DL) const {
return LineCol == DL.LineCol && ScopeIdx == DL.ScopeIdx;
}
bool operator!=(const NewDebugLoc &DL) const { return !(*this == DL); }
static NewDebugLoc getUnknownLoc() { NewDebugLoc L; return L; }
};
typedef NewDebugLoc DebugLoc;
} // end namespace llvm
#endif /* LLVM_DEBUGLOC_H */