1 //===- lib/MC/MCValue.cpp - MCValue implementation ------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/MC/MCValue.h" 10 #include "llvm/Config/llvm-config.h" 11 #include "llvm/MC/MCExpr.h" 12 #include "llvm/Support/Debug.h" 13 #include "llvm/Support/ErrorHandling.h" 14 #include "llvm/Support/raw_ostream.h" 15 16 using namespace llvm; 17 18 void MCValue::print(raw_ostream &OS) const { 19 if (isAbsolute()) { 20 OS << getConstant(); 21 return; 22 } 23 24 // FIXME: prints as a number, which isn't ideal. But the meaning will be 25 // target-specific anyway. 26 if (getRefKind()) 27 OS << ':' << getRefKind() << ':'; 28 29 OS << *getSymA(); 30 31 if (getSymB()) { 32 OS << " - "; 33 OS << *getSymB(); 34 } 35 36 if (getConstant()) 37 OS << " + " << getConstant(); 38 } 39 40 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP) 41 LLVM_DUMP_METHOD void MCValue::dump() const { 42 print(dbgs()); 43 } 44 #endif 45 46 MCSymbolRefExpr::VariantKind MCValue::getAccessVariant() const { 47 const MCSymbolRefExpr *B = getSymB(); 48 if (B) { 49 if (B->getKind() != MCSymbolRefExpr::VK_None) 50 llvm_unreachable("unsupported"); 51 } 52 53 const MCSymbolRefExpr *A = getSymA(); 54 if (!A) 55 return MCSymbolRefExpr::VK_None; 56 57 return A->getKind(); 58 } 59