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Debug info: Further simplify the implementation of buildLocationList by

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getting rid of the redundant DIVariable in the OpenRanges pair.

llvm-svn: 215385
This commit is contained in:
Adrian Prantl 2014-08-11 21:05:57 +00:00
parent ef4cab1ac9
commit 217116ad24
1 changed files with 6 additions and 6 deletions
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12
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -1233,8 +1233,7 @@ static bool piecesOverlap(DIVariable P1, DIVariable P2) {
void
DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
const DbgValueHistoryMap::InstrRanges &Ranges) {
typedef std::pair<DIVariable, DebugLocEntry::Value> Range;
SmallVector<Range, 4> OpenRanges;
SmallVector<DebugLocEntry::Value, 4> OpenRanges;
for (auto I = Ranges.begin(), E = Ranges.end(); I != E; ++I) {
const MachineInstr *Begin = I->first;
@ -1251,9 +1250,10 @@ DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
// If this piece overlaps with any open ranges, truncate them.
DIVariable DIVar = Begin->getDebugVariable();
auto Last = std::remove_if(OpenRanges.begin(), OpenRanges.end(), [&](Range R){
return piecesOverlap(DIVar, R.first);
});
auto Last = std::remove_if(OpenRanges.begin(), OpenRanges.end(),
[&](DebugLocEntry::Value R) {
return piecesOverlap(DIVar, DIVariable(R.getVariable()));
});
OpenRanges.erase(Last, OpenRanges.end());
const MCSymbol *StartLabel = getLabelBeforeInsn(Begin);
@ -1277,7 +1277,7 @@ DwarfDebug::buildLocationList(SmallVectorImpl<DebugLocEntry> &DebugLoc,
// If this is a piece, it may belong to the current DebugLocEntry.
if (DIVar.isVariablePiece()) {
// Add this value to the list of open ranges.
OpenRanges.push_back(std::make_pair(DIVar, Value));
OpenRanges.push_back(Value);
// Attempt to add the piece to the last entry.
if (!DebugLoc.empty())