1 //===-- DebugLoc.cpp - Implement DebugLoc class ---------------------------===//
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 #include "llvm/IR/DebugLoc.h"
11 #include "LLVMContextImpl.h"
12 #include "llvm/ADT/DenseMapInfo.h"
13 #include "llvm/IR/DebugInfo.h"
14 using namespace llvm;
15
16 //===----------------------------------------------------------------------===//
17 // DebugLoc Implementation
18 //===----------------------------------------------------------------------===//
19
getLine() const20 unsigned DebugLoc::getLine() const { return DILocation(Loc).getLineNumber(); }
getCol() const21 unsigned DebugLoc::getCol() const { return DILocation(Loc).getColumnNumber(); }
22
getScope() const23 MDNode *DebugLoc::getScope() const { return DILocation(Loc).getScope(); }
24
getInlinedAt() const25 MDNode *DebugLoc::getInlinedAt() const {
26 return DILocation(Loc).getOrigLocation();
27 }
28
29 /// Return both the Scope and the InlinedAt values.
getScopeAndInlinedAt(MDNode * & Scope,MDNode * & IA) const30 void DebugLoc::getScopeAndInlinedAt(MDNode *&Scope, MDNode *&IA) const {
31 Scope = getScope();
32 IA = getInlinedAt();
33 }
34
getScopeNode() const35 MDNode *DebugLoc::getScopeNode() const {
36 if (MDNode *InlinedAt = getInlinedAt())
37 return DebugLoc::getFromDILocation(InlinedAt).getScopeNode();
38 return getScope();
39 }
40
getFnDebugLoc() const41 DebugLoc DebugLoc::getFnDebugLoc() const {
42 const MDNode *Scope = getScopeNode();
43 DISubprogram SP = getDISubprogram(Scope);
44 if (SP.isSubprogram())
45 return DebugLoc::get(SP.getScopeLineNumber(), 0, SP);
46
47 return DebugLoc();
48 }
49
get(unsigned Line,unsigned Col,MDNode * Scope,MDNode * InlinedAt)50 DebugLoc DebugLoc::get(unsigned Line, unsigned Col,
51 MDNode *Scope, MDNode *InlinedAt) {
52 // If no scope is available, this is an unknown location.
53 if (!Scope)
54 return DebugLoc();
55
56 // Saturate line and col to "unknown".
57 // FIXME: Allow 16-bits for columns.
58 if (Col > 255) Col = 0;
59 if (Line >= (1 << 24)) Line = 0;
60
61 return getFromDILocation(
62 MDLocation::get(Scope->getContext(), Line, Col, Scope, InlinedAt));
63 }
64
65 /// getAsMDNode - This method converts the compressed DebugLoc node into a
66 /// DILocation-compatible MDNode.
getAsMDNode() const67 MDNode *DebugLoc::getAsMDNode() const { return Loc; }
68
69 /// getFromDILocation - Translate the DILocation quad into a DebugLoc.
getFromDILocation(MDNode * N)70 DebugLoc DebugLoc::getFromDILocation(MDNode *N) {
71 DebugLoc Loc;
72 Loc.Loc.reset(N);
73 return Loc;
74 }
75
76 /// getFromDILexicalBlock - Translate the DILexicalBlock into a DebugLoc.
getFromDILexicalBlock(MDNode * N)77 DebugLoc DebugLoc::getFromDILexicalBlock(MDNode *N) {
78 DILexicalBlock LexBlock(N);
79 MDNode *Scope = LexBlock.getContext();
80 if (!Scope) return DebugLoc();
81 return get(LexBlock.getLineNumber(), LexBlock.getColumnNumber(), Scope,
82 nullptr);
83 }
84
dump() const85 void DebugLoc::dump() const {
86 #ifndef NDEBUG
87 if (!isUnknown()) {
88 dbgs() << getLine();
89 if (getCol() != 0)
90 dbgs() << ',' << getCol();
91 DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(getInlinedAt());
92 if (!InlinedAtDL.isUnknown()) {
93 dbgs() << " @ ";
94 InlinedAtDL.dump();
95 } else
96 dbgs() << "\n";
97 }
98 #endif
99 }
100
print(raw_ostream & OS) const101 void DebugLoc::print(raw_ostream &OS) const {
102 if (!isUnknown()) {
103 // Print source line info.
104 DIScope Scope(getScope());
105 assert((!Scope || Scope.isScope()) &&
106 "Scope of a DebugLoc should be null or a DIScope.");
107 if (Scope)
108 OS << Scope.getFilename();
109 else
110 OS << "<unknown>";
111 OS << ':' << getLine();
112 if (getCol() != 0)
113 OS << ':' << getCol();
114 DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(getInlinedAt());
115 if (!InlinedAtDL.isUnknown()) {
116 OS << " @[ ";
117 InlinedAtDL.print(OS);
118 OS << " ]";
119 }
120 }
121 }
122