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Refactor code to push DILocation prcessing into DwarfDebug.cpp from AsmPrinter.cpp.

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This is same as r99772 (which was reverted) with just one meaningful difference where two source lines exchanged their positions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2010-03-29 17:20:31 +00:00
parent f283e40b6a
commit 553881bddc
6 changed files with 55 additions and 50 deletions
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45
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -296,7 +296,7 @@ DwarfDebug::DwarfDebug(raw_ostream &OS, AsmPrinter *A, const MCAsmInfo *T)
: DwarfPrinter(OS, A, T), ModuleCU(0),
AbbreviationsSet(InitAbbreviationsSetSize), Abbreviations(),
DIEValues(), SectionSourceLines(), didInitial(false), shouldEmit(false),
CurrentFnDbgScope(0), DebugTimer(0) {
CurrentFnDbgScope(0), PrevDILoc(0), DebugTimer(0) {
NextStringPoolNumber = 0;
if (TimePassesIsEnabled)
DebugTimer = new Timer("Dwarf Debug Writer");
@ -2036,19 +2036,58 @@ void DwarfDebug::collectVariableInfo() {
}
}
/// beginScope - Process beginning of a scope starting at Label.
void DwarfDebug::beginScope(const MachineInstr *MI, MCSymbol *Label) {
/// beginScope - Process beginning of a scope.
void DwarfDebug::beginScope(const MachineInstr *MI) {
// Ignore DBG_VALUE instructions.
if (MI->getOpcode() == TargetOpcode::DBG_VALUE)
return;
// Check location.
DebugLoc DL = MI->getDebugLoc();
if (DL.isUnknown())
return;
DILocation DILoc = MF->getDILocation(DL);
if (!DILoc.getScope().Verify())
return;
// Check and update last known location info.
if(DILoc.getNode() == PrevDILoc)
return;
PrevDILoc = DILoc.getNode();
// Emit a label to indicate location change. This is used for line
// table even if this instruction does start a new scope.
MCSymbol *Label = recordSourceLine(DILoc.getLineNumber(),
DILoc.getColumnNumber(),
DILoc.getScope().getNode());
// update DbgScope if this instruction starts a new scope.
InsnToDbgScopeMapTy::iterator I = DbgScopeBeginMap.find(MI);
if (I == DbgScopeBeginMap.end())
return;
ScopeVector &SD = I->second;
for (ScopeVector::iterator SDI = SD.begin(), SDE = SD.end();
SDI != SDE; ++SDI)
(*SDI)->setStartLabel(Label);
}
/// endScope - Process end of a scope.
void DwarfDebug::endScope(const MachineInstr *MI) {
// Ignore DBG_VALUE instruction.
if (MI->getOpcode() == TargetOpcode::DBG_VALUE)
return;
// Check location.
DebugLoc DL = MI->getDebugLoc();
if (DL.isUnknown())
return;
DILocation DILoc = MF->getDILocation(DL);
if (!DILoc.getScope().Verify())
return;
// Emit a label and update DbgScope if this instruction ends a scope.
InsnToDbgScopeMapTy::iterator I = DbgScopeEndMap.find(MI);
if (I == DbgScopeEndMap.end())
return;