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//===-- MipsMCExpr.cpp - Mips specific MC expression classes --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "mipsmcexpr"
#include "MipsMCExpr.h"
#include "llvm/MC/MCAssembler.h"
#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCAsmInfo.h"
using namespace llvm;
const MipsMCExpr*
MipsMCExpr::Create(VariantKind Kind, const MCExpr *Expr,
MCContext &Ctx) {
return new (Ctx) MipsMCExpr(Kind, Expr);
}
void MipsMCExpr::PrintImpl(raw_ostream &OS) const {
switch (Kind) {
default: llvm_unreachable("Invalid kind!");
case VK_Mips_ABS_LO: OS << "%lo"; break;
case VK_Mips_ABS_HI: OS << "%hi"; break;
}
OS << '(';
Expr->print(OS);
OS << ')';
}
bool
MipsMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
const MCAsmLayout *Layout) const {
if (!Layout)
return false;
return getSubExpr()->EvaluateAsRelocatable(Res, *Layout);
}
// FIXME: This basically copies MCObjectStreamer::AddValueSymbols. Perhaps
// that method should be made public?
static void AddValueSymbolsImpl(const MCExpr *Value, MCAssembler *Asm) {
switch (Value->getKind()) {
case MCExpr::Target:
llvm_unreachable("Can't handle nested target expr!");
case MCExpr::Constant:
break;
case MCExpr::Binary: {
const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
AddValueSymbolsImpl(BE->getLHS(), Asm);
AddValueSymbolsImpl(BE->getRHS(), Asm);
break;
}
case MCExpr::SymbolRef:
Asm->getOrCreateSymbolData(cast<MCSymbolRefExpr>(Value)->getSymbol());
break;
case MCExpr::Unary:
AddValueSymbolsImpl(cast<MCUnaryExpr>(Value)->getSubExpr(), Asm);
break;
}
}
void MipsMCExpr::AddValueSymbols(MCAssembler *Asm) const {
AddValueSymbolsImpl(getSubExpr(), Asm);
}
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