1//===-- NVPTXMCExpr.cpp - NVPTX specific MC expression classes ------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10#include "NVPTXMCExpr.h" 11#include "llvm/ADT/StringExtras.h" 12#include "llvm/MC/MCAssembler.h" 13#include "llvm/MC/MCContext.h" 14using namespace llvm; 15 16#define DEBUG_TYPE "nvptx-mcexpr" 17 18const NVPTXFloatMCExpr* 19NVPTXFloatMCExpr::Create(VariantKind Kind, APFloat Flt, MCContext &Ctx) { 20 return new (Ctx) NVPTXFloatMCExpr(Kind, Flt); 21} 22 23void NVPTXFloatMCExpr::PrintImpl(raw_ostream &OS) const { 24 bool Ignored; 25 unsigned NumHex; 26 APFloat APF = getAPFloat(); 27 28 switch (Kind) { 29 default: llvm_unreachable("Invalid kind!"); 30 case VK_NVPTX_SINGLE_PREC_FLOAT: 31 OS << "0f"; 32 NumHex = 8; 33 APF.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven, &Ignored); 34 break; 35 case VK_NVPTX_DOUBLE_PREC_FLOAT: 36 OS << "0d"; 37 NumHex = 16; 38 APF.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &Ignored); 39 break; 40 } 41 42 APInt API = APF.bitcastToAPInt(); 43 std::string HexStr(utohexstr(API.getZExtValue())); 44 if (HexStr.length() < NumHex) 45 OS << std::string(NumHex - HexStr.length(), '0'); 46 OS << utohexstr(API.getZExtValue()); 47} 48