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simplify EmitFrameMoves to take BaseLabel in as a symbol

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instead of as a stem+idx pair, simplify the "is a new 
location" check to use symbol comparison.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98432 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-03-13 08:05:25 +00:00
parent 464bee191f
commit 5e6cbe0eff
4 changed files with 13 additions and 18 deletions
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17
lib/CodeGen/AsmPrinter/DwarfPrinter.cpp
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@ -237,7 +237,7 @@ void DwarfPrinter::EmitSectionOffset(const MCSymbol *Label,
/// EmitFrameMoves - Emit frame instructions to describe the layout of the
/// frame.
void DwarfPrinter::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
void DwarfPrinter::EmitFrameMoves(MCSymbol *BaseLabel,
const std::vector<MachineMove> &Moves,
bool isEH) {
int stackGrowth = TD->getPointerSize();
@ -245,7 +245,6 @@ void DwarfPrinter::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
TargetFrameInfo::StackGrowsUp)
stackGrowth *= -1;
bool IsLocal = false;
for (unsigned i = 0, N = Moves.size(); i < N; ++i) {
const MachineMove &Move = Moves[i];
unsigned LabelID = Move.getLabelID();
@ -258,13 +257,13 @@ void DwarfPrinter::EmitFrameMoves(const char *BaseLabel, unsigned BaseLabelID,
const MachineLocation &Src = Move.getSource();
// Advance row if new location.
if (BaseLabel && LabelID && (BaseLabelID != LabelID || !IsLocal)) {
EmitCFAByte(dwarf::DW_CFA_advance_loc4);
EmitDifference(getDWLabel("label", LabelID),
getDWLabel(BaseLabel, BaseLabelID), true);
BaseLabelID = LabelID;
BaseLabel = "label";
IsLocal = true;
if (BaseLabel && LabelID) {
MCSymbol *ThisSym = getDWLabel("label", LabelID);
if (ThisSym != BaseLabel) {
EmitCFAByte(dwarf::DW_CFA_advance_loc4);
EmitDifference(ThisSym, BaseLabel, true);
BaseLabel = ThisSym;
}
}
// If advancing cfa.