| //===- subzero/src/IceFixups.cpp - Implementation of Assembler Fixups -----===// |
| // |
| // The Subzero Code Generator |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the AssemblerFixup class, a very basic |
| // target-independent representation of a fixup or relocation. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "IceFixups.h" |
| |
| #include "IceOperand.h" |
| |
| namespace Ice { |
| |
| const Constant *AssemblerFixup::NullSymbol = nullptr; |
| |
| RelocOffsetT AssemblerFixup::offset() const { |
| if (isNullSymbol()) |
| return 0; |
| if (const auto CR = llvm::dyn_cast<ConstantRelocatable>(value_)) |
| return CR->getOffset(); |
| return 0; |
| } |
| |
| IceString AssemblerFixup::symbol(const GlobalContext *Ctx) const { |
| std::string Buffer; |
| llvm::raw_string_ostream Str(Buffer); |
| const Constant *C = value_; |
| assert(!isNullSymbol()); |
| if (const auto CR = llvm::dyn_cast<ConstantRelocatable>(C)) { |
| if (CR->getSuppressMangling()) |
| Str << CR->getName(); |
| else |
| Str << Ctx->mangleName(CR->getName()); |
| } else { |
| // NOTE: currently only float/doubles are put into constant pools. |
| // In the future we may put integers as well. |
| assert(llvm::isa<ConstantFloat>(C) || llvm::isa<ConstantDouble>(C)); |
| C->emitPoolLabel(Str); |
| } |
| return Str.str(); |
| } |
| |
| void AssemblerFixup::emit(GlobalContext *Ctx, RelocOffsetT BaseOffset) const { |
| if (!BuildDefs::dump()) |
| return; |
| Ostream &Str = Ctx->getStrEmit(); |
| if (isNullSymbol()) |
| Str << "__Sz_AbsoluteZero"; |
| else |
| Str << symbol(Ctx); |
| RelocOffsetT Offset = offset() + BaseOffset; |
| if (Offset) |
| Str << " + " << Offset; |
| } |
| |
| } // end of namespace Ice |