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add scaffolding for target-specific MCExprs.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95559 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-02-08 19:41:07 +00:00
parent 52c5e736b7
commit 5d917a8952
3 changed files with 31 additions and 1 deletions
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6
lib/MC/MCExpr.cpp
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@@ -17,6 +17,8 @@ using namespace llvm;
void MCExpr::print(raw_ostream &OS) const {
switch (getKind()) {
case MCExpr::Target:
return cast<MCTargetExpr>(this)->PrintImpl(OS);
case MCExpr::Constant:
OS << cast<MCConstantExpr>(*this).getValue();
return;
@@ -131,6 +133,7 @@ const MCSymbolRefExpr *MCSymbolRefExpr::Create(StringRef Name, MCContext &Ctx) {
return Create(Ctx.GetOrCreateSymbol(Name), Ctx);
}
MCTargetExpr::~MCTargetExpr() {}
/* *** */
@@ -168,6 +171,9 @@ static bool EvaluateSymbolicAdd(const MCValue &LHS, const MCSymbol *RHS_A,
bool MCExpr::EvaluateAsRelocatable(MCValue &Res) const {
switch (getKind()) {
case Target:
return cast<MCTargetExpr>(this)->EvaluateAsRelocatableImpl(Res);
case Constant:
Res = MCValue::get(cast<MCConstantExpr>(this)->getValue());
return true;