1 //===-- ARMMCExpr.cpp - ARM specific MC expression classes ----------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #define DEBUG_TYPE "armmcexpr"
11 #include "ARMMCExpr.h"
12 #include "llvm/MC/MCAssembler.h"
13 #include "llvm/MC/MCContext.h"
17 ARMMCExpr::Create(VariantKind Kind, const MCExpr *Expr,
19 return new (Ctx) ARMMCExpr(Kind, Expr);
22 void ARMMCExpr::PrintImpl(raw_ostream &OS) const {
24 default: llvm_unreachable("Invalid kind!");
25 case VK_ARM_HI16: OS << ":upper16:"; break;
26 case VK_ARM_LO16: OS << ":lower16:"; break;
29 const MCExpr *Expr = getSubExpr();
30 if (Expr->getKind() != MCExpr::SymbolRef)
33 if (Expr->getKind() != MCExpr::SymbolRef)
38 ARMMCExpr::EvaluateAsRelocatableImpl(MCValue &Res,
39 const MCAsmLayout *Layout) const {
43 // FIXME: This basically copies MCObjectStreamer::AddValueSymbols. Perhaps
44 // that method should be made public?
45 static void AddValueSymbols_(const MCExpr *Value, MCAssembler *Asm) {
46 switch (Value->getKind()) {
48 llvm_unreachable("Can't handle nested target expr!");
50 case MCExpr::Constant:
53 case MCExpr::Binary: {
54 const MCBinaryExpr *BE = cast<MCBinaryExpr>(Value);
55 AddValueSymbols_(BE->getLHS(), Asm);
56 AddValueSymbols_(BE->getRHS(), Asm);
60 case MCExpr::SymbolRef:
61 Asm->getOrCreateSymbolData(cast<MCSymbolRefExpr>(Value)->getSymbol());
65 AddValueSymbols_(cast<MCUnaryExpr>(Value)->getSubExpr(), Asm);
70 void ARMMCExpr::AddValueSymbols(MCAssembler *Asm) const {
71 AddValueSymbols_(getSubExpr(), Asm);