6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-15 05:24:01 +00:00
Code Issues Projects Releases Wiki Activity

Simplify the visitation of target expressions. No functionality change.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211707 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2014-06-25 15:29:54 +00:00
parent b4840d7a4d
commit d4feaf82bc
15 changed files with 42 additions and 170 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
lib/MC/MCObjectStreamer.cpp
View File

@ -83,28 +83,32 @@ MCDataFragment *MCObjectStreamer::getOrCreateDataFragment() const {
return F;
}
void MCObjectStreamer::AddValueSymbols(const MCExpr *Value) {
switch (Value->getKind()) {
void MCObjectStreamer::visitUsedSymbol(const MCSymbol &Sym) {
Assembler->getOrCreateSymbolData(Sym);
}
void MCObjectStreamer::visitUsedExpr(const MCExpr &Expr) {
switch (Expr.getKind()) {
case MCExpr::Target:
cast<MCTargetExpr>(Value)->AddValueSymbols(Assembler);
cast<MCTargetExpr>(Expr).visitUsedExpr(*this);
break;
case MCExpr::Constant:
break;
case MCExpr::Binary: {
const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
AddValueSymbols(BE->getLHS());
AddValueSymbols(BE->getRHS());
const MCBinaryExpr &BE = cast<MCBinaryExpr>(Expr);
visitUsedExpr(*BE.getLHS());
visitUsedExpr(*BE.getRHS());
break;
}
case MCExpr::SymbolRef:
Assembler->getOrCreateSymbolData(cast<MCSymbolRefExpr>(Value)->getSymbol());
visitUsedSymbol(cast<MCSymbolRefExpr>(Expr).getSymbol());
break;
case MCExpr::Unary:
AddValueSymbols(cast<MCUnaryExpr>(Value)->getSubExpr());
visitUsedExpr(*cast<MCUnaryExpr>(Expr).getSubExpr());
break;
}
}
@ -123,7 +127,7 @@ void MCObjectStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
// Avoid fixups when possible.
int64_t AbsValue;
AddValueSymbols(Value);
visitUsedExpr(*Value);
if (Value->EvaluateAsAbsolute(AbsValue, getAssembler())) {
EmitIntValue(AbsValue, Size);
return;
@ -203,7 +207,7 @@ void MCObjectStreamer::ChangeSection(const MCSection *Section,
void MCObjectStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
getAssembler().getOrCreateSymbolData(*Symbol);
AddValueSymbols(Value);
visitUsedExpr(*Value);
MCStreamer::EmitAssignment(Symbol, Value);
}
@ -211,7 +215,7 @@ void MCObjectStreamer::EmitInstruction(const MCInst &Inst, const MCSubtargetInfo
// Scan for values.
for (unsigned i = Inst.getNumOperands(); i--; )
if (Inst.getOperand(i).isExpr())
AddValueSymbols(Inst.getOperand(i).getExpr());
visitUsedExpr(*Inst.getOperand(i).getExpr());
MCSectionData *SD = getCurrentSectionData();
SD->setHasInstructions(true);