forked from OSchip/llvm-project
126 lines
3.8 KiB
C++
126 lines
3.8 KiB
C++
//===-- DebugLoc.cpp - Implement DebugLoc class ---------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/DebugLoc.h"
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#include "LLVMContextImpl.h"
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#include "llvm/ADT/DenseMapInfo.h"
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#include "llvm/IR/DebugInfo.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// DebugLoc Implementation
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//===----------------------------------------------------------------------===//
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unsigned DebugLoc::getLine() const { return DILocation(Loc).getLineNumber(); }
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unsigned DebugLoc::getCol() const { return DILocation(Loc).getColumnNumber(); }
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MDNode *DebugLoc::getScope() const { return DILocation(Loc).getScope(); }
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MDNode *DebugLoc::getInlinedAt() const {
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return DILocation(Loc).getOrigLocation();
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}
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/// Return both the Scope and the InlinedAt values.
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void DebugLoc::getScopeAndInlinedAt(MDNode *&Scope, MDNode *&IA) const {
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Scope = getScope();
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IA = getInlinedAt();
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}
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MDNode *DebugLoc::getScopeNode() const {
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if (MDNode *InlinedAt = getInlinedAt())
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return DebugLoc::getFromDILocation(InlinedAt).getScopeNode();
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return getScope();
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}
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DebugLoc DebugLoc::getFnDebugLoc() const {
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const MDNode *Scope = getScopeNode();
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DISubprogram SP = getDISubprogram(Scope);
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if (SP.isSubprogram())
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return DebugLoc::get(SP.getScopeLineNumber(), 0, SP);
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return DebugLoc();
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}
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DebugLoc DebugLoc::get(unsigned Line, unsigned Col,
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MDNode *Scope, MDNode *InlinedAt) {
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// If no scope is available, this is an unknown location.
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if (!Scope)
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return DebugLoc();
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// Saturate line and col to "unknown".
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// FIXME: Allow 16-bits for columns.
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if (Col > 255) Col = 0;
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if (Line >= (1 << 24)) Line = 0;
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LLVMContext &Context = Scope->getContext();
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Type *Int32 = Type::getInt32Ty(Context);
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Metadata *Elts[] = {ConstantAsMetadata::get(ConstantInt::get(Int32, Line)),
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ConstantAsMetadata::get(ConstantInt::get(Int32, Col)),
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Scope, InlinedAt};
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return getFromDILocation(MDNode::get(Context, Elts));
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}
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/// getAsMDNode - This method converts the compressed DebugLoc node into a
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/// DILocation-compatible MDNode.
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MDNode *DebugLoc::getAsMDNode() const { return Loc; }
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/// getFromDILocation - Translate the DILocation quad into a DebugLoc.
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DebugLoc DebugLoc::getFromDILocation(MDNode *N) {
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DebugLoc Loc;
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Loc.Loc.reset(N);
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return Loc;
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}
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/// getFromDILexicalBlock - Translate the DILexicalBlock into a DebugLoc.
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DebugLoc DebugLoc::getFromDILexicalBlock(MDNode *N) {
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DILexicalBlock LexBlock(N);
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MDNode *Scope = LexBlock.getContext();
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if (!Scope) return DebugLoc();
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return get(LexBlock.getLineNumber(), LexBlock.getColumnNumber(), Scope,
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nullptr);
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}
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void DebugLoc::dump() const {
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#ifndef NDEBUG
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if (!isUnknown()) {
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dbgs() << getLine();
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if (getCol() != 0)
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dbgs() << ',' << getCol();
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DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(getInlinedAt());
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if (!InlinedAtDL.isUnknown()) {
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dbgs() << " @ ";
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InlinedAtDL.dump();
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} else
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dbgs() << "\n";
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}
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#endif
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}
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void DebugLoc::print(raw_ostream &OS) const {
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if (!isUnknown()) {
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// Print source line info.
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DIScope Scope(getScope());
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assert((!Scope || Scope.isScope()) &&
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"Scope of a DebugLoc should be null or a DIScope.");
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if (Scope)
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OS << Scope.getFilename();
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else
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OS << "<unknown>";
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OS << ':' << getLine();
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if (getCol() != 0)
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OS << ':' << getCol();
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DebugLoc InlinedAtDL = DebugLoc::getFromDILocation(getInlinedAt());
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if (!InlinedAtDL.isUnknown()) {
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OS << " @[ ";
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InlinedAtDL.print(OS);
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OS << " ]";
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}
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}
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}
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