| //===- MCFixup.cpp - Assembly Fixup Implementation ------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/MC/MCFixup.h" |
| using namespace llvm; |
| |
| static MCSymbolRefExpr::VariantKind getAccessVariant(const MCExpr *Expr) { |
| switch (Expr->getKind()) { |
| case MCExpr::Unary: { |
| assert(getAccessVariant(cast<MCUnaryExpr>(Expr)->getSubExpr()) == |
| MCSymbolRefExpr::VK_None); |
| return MCSymbolRefExpr::VK_None; |
| } |
| |
| case MCExpr::Target: |
| llvm_unreachable("unsupported"); |
| |
| case MCExpr::Constant: |
| return MCSymbolRefExpr::VK_None; |
| |
| case MCExpr::SymbolRef: { |
| const MCSymbolRefExpr *SRE = cast<MCSymbolRefExpr>(Expr); |
| return SRE->getKind(); |
| } |
| case MCExpr::Binary: { |
| const MCBinaryExpr *ABE = cast<MCBinaryExpr>(Expr); |
| assert(getAccessVariant(ABE->getRHS()) == MCSymbolRefExpr::VK_None); |
| return getAccessVariant(ABE->getLHS()); |
| } |
| } |
| llvm_unreachable("unknown MCExpr kind"); |
| } |
| |
| MCSymbolRefExpr::VariantKind MCFixup::getAccessVariant() const { |
| return ::getAccessVariant(getValue()); |
| } |