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No relocation produces a SLEB or ULEB, make sure they are handled in MC.

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llvm-svn: 130181
This commit is contained in:
Rafael Espindola 2011-04-26 02:17:58 +00:00
parent bad294615e
commit c115df57cc
2 changed files with 15 additions and 11 deletions
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4
lib/MC/MCAssembler.cpp
View File

@ -691,7 +691,9 @@ bool MCAssembler::RelaxInstruction(MCAsmLayout &Layout,
bool MCAssembler::RelaxLEB(MCAsmLayout &Layout, MCLEBFragment &LF) {
int64_t Value = 0;
uint64_t OldSize = LF.getContents().size();
LF.getValue().EvaluateAsAbsolute(Value, Layout);
bool IsAbs = LF.getValue().EvaluateAsAbsolute(Value, Layout);
(void)IsAbs;
assert(IsAbs);
SmallString<8> &Data = LF.getContents();
Data.clear();
raw_svector_ostream OSE(Data);

22
lib/MC/MCObjectStreamer.cpp
View File

@ -124,12 +124,23 @@ void MCObjectStreamer::EmitLabel(MCSymbol *Symbol) {
SD.setOffset(F->getContents().size());
}
static const MCExpr *ForceExpAbs(MCObjectStreamer *Streamer,
MCContext &Context, const MCExpr* Expr) {
if (Context.getAsmInfo().hasAggressiveSymbolFolding())
return Expr;
MCSymbol *ABS = Context.CreateTempSymbol();
Streamer->EmitAssignment(ABS, Expr);
return MCSymbolRefExpr::Create(ABS, Context);
}
void MCObjectStreamer::EmitULEB128Value(const MCExpr *Value) {
int64_t IntValue;
if (Value->EvaluateAsAbsolute(IntValue, getAssembler())) {
EmitULEB128IntValue(IntValue);
return;
}
Value = ForceExpAbs(this, getContext(), Value);
new MCLEBFragment(*Value, false, getCurrentSectionData());
}
@ -139,6 +150,7 @@ void MCObjectStreamer::EmitSLEB128Value(const MCExpr *Value) {
EmitSLEB128IntValue(IntValue);
return;
}
Value = ForceExpAbs(this, getContext(), Value);
new MCLEBFragment(*Value, true, getCurrentSectionData());
}
@ -208,16 +220,6 @@ static const MCExpr *BuildSymbolDiff(MCContext &Context,
return AddrDelta;
}
static const MCExpr *ForceExpAbs(MCObjectStreamer *Streamer,
MCContext &Context, const MCExpr* Expr) {
if (Context.getAsmInfo().hasAggressiveSymbolFolding())
return Expr;
MCSymbol *ABS = Context.CreateTempSymbol();
Streamer->EmitAssignment(ABS, Expr);
return MCSymbolRefExpr::Create(ABS, Context);
}
void MCObjectStreamer::EmitDwarfAdvanceLineAddr(int64_t LineDelta,
const MCSymbol *LastLabel,
const MCSymbol *Label) {