forked from OSchip/llvm-project
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
//===-- NVPTXMCExpr.cpp - NVPTX specific MC expression classes ------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "NVPTXMCExpr.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/MC/MCAssembler.h"
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#include "llvm/MC/MCContext.h"
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#include "llvm/Support/Format.h"
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using namespace llvm;
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#define DEBUG_TYPE "nvptx-mcexpr"
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const NVPTXFloatMCExpr *
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NVPTXFloatMCExpr::create(VariantKind Kind, const APFloat &Flt, MCContext &Ctx) {
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return new (Ctx) NVPTXFloatMCExpr(Kind, Flt);
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}
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void NVPTXFloatMCExpr::printImpl(raw_ostream &OS, const MCAsmInfo *MAI) const {
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bool Ignored;
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unsigned NumHex;
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APFloat APF = getAPFloat();
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switch (Kind) {
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default: llvm_unreachable("Invalid kind!");
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case VK_NVPTX_HALF_PREC_FLOAT:
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// ptxas does not have a way to specify half-precision floats.
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// Instead we have to print and load fp16 constants as .b16
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OS << "0x";
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NumHex = 4;
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APF.convert(APFloat::IEEEhalf(), APFloat::rmNearestTiesToEven, &Ignored);
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break;
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case VK_NVPTX_SINGLE_PREC_FLOAT:
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OS << "0f";
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NumHex = 8;
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APF.convert(APFloat::IEEEsingle(), APFloat::rmNearestTiesToEven, &Ignored);
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break;
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case VK_NVPTX_DOUBLE_PREC_FLOAT:
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OS << "0d";
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NumHex = 16;
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APF.convert(APFloat::IEEEdouble(), APFloat::rmNearestTiesToEven, &Ignored);
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break;
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}
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APInt API = APF.bitcastToAPInt();
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OS << format_hex_no_prefix(API.getZExtValue(), NumHex, /*Upper=*/true);
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}
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const NVPTXGenericMCSymbolRefExpr*
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NVPTXGenericMCSymbolRefExpr::create(const MCSymbolRefExpr *SymExpr,
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MCContext &Ctx) {
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return new (Ctx) NVPTXGenericMCSymbolRefExpr(SymExpr);
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}
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void NVPTXGenericMCSymbolRefExpr::printImpl(raw_ostream &OS,
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const MCAsmInfo *MAI) const {
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OS << "generic(";
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SymExpr->print(OS, MAI);
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OS << ")";
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}
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