1 //===-- NVPTXMCExpr.cpp - NVPTX 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 #include "NVPTXMCExpr.h"
11 #include "llvm/ADT/StringExtras.h"
12 #include "llvm/MC/MCAssembler.h"
13 #include "llvm/MC/MCContext.h"
16 #define DEBUG_TYPE "nvptx-mcexpr"
18 const NVPTXFloatMCExpr *
19 NVPTXFloatMCExpr::create(VariantKind Kind, const APFloat &Flt, MCContext &Ctx) {
20 return new (Ctx) NVPTXFloatMCExpr(Kind, Flt);
23 void NVPTXFloatMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
26 APFloat APF = getAPFloat();
29 default: llvm_unreachable("Invalid kind!");
30 case VK_NVPTX_HALF_PREC_FLOAT:
31 // ptxas does not have a way to specify half-precision floats.
32 // Instead we have to print and load fp16 constants as .b16
35 APF.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven, &Ignored);
37 case VK_NVPTX_SINGLE_PREC_FLOAT:
40 APF.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven, &Ignored);
42 case VK_NVPTX_DOUBLE_PREC_FLOAT:
45 APF.convert(APFloat::IEEEdouble(), APFloat::rmNearestTiesToEven, &Ignored);
49 APInt API = APF.bitcastToAPInt();
50 std::string HexStr(utohexstr(API.getZExtValue()));
51 if (HexStr.length() < NumHex)
52 OS << std::string(NumHex - HexStr.length(), '0');
53 OS << utohexstr(API.getZExtValue());
56 const NVPTXGenericMCSymbolRefExpr*
57 NVPTXGenericMCSymbolRefExpr::create(const MCSymbolRefExpr *SymExpr,
59 return new (Ctx) NVPTXGenericMCSymbolRefExpr(SymExpr);
62 void NVPTXGenericMCSymbolRefExpr::printImpl(raw_ostream &OS,
63 const MCAsmInfo *MAI) const {
65 SymExpr->print(OS, MAI);