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//===-- NVPTXInstPrinter.cpp - PTX assembly instruction printing ----------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Print MCInst instructions to .ptx format.
//
//===----------------------------------------------------------------------===//
#include "MCTargetDesc/NVPTXInstPrinter.h"
#include "MCTargetDesc/NVPTXBaseInfo.h"
#include "NVPTX.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstrInfo.h"
#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
#include <cctype>
using namespace llvm;
#define DEBUG_TYPE "asm-printer"
#include "NVPTXGenAsmWriter.inc"
NVPTXInstPrinter::NVPTXInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
const MCRegisterInfo &MRI)
: MCInstPrinter(MAI, MII, MRI) {}
void NVPTXInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
// Decode the virtual register
// Must be kept in sync with NVPTXAsmPrinter::encodeVirtualRegister
unsigned RCId = (RegNo >> 28);
switch (RCId) {
default: report_fatal_error("Bad virtual register encoding");
case 0:
// This is actually a physical register, so defer to the autogenerated
// register printer
OS << getRegisterName(RegNo);
return;
case 1:
OS << "%p";
break;
case 2:
OS << "%rs";
break;
case 3:
OS << "%r";
break;
case 4:
OS << "%rd";
break;
case 5:
OS << "%f";
break;
case 6:
OS << "%fd";
break;
case 7:
OS << "%h";
break;
case 8:
OS << "%hh";
break;
}
unsigned VReg = RegNo & 0x0FFFFFFF;
OS << VReg;
}
void NVPTXInstPrinter::printInst(const MCInst *MI, uint64_t Address,
StringRef Annot, const MCSubtargetInfo &STI,
raw_ostream &OS) {
printInstruction(MI, Address, OS);
// Next always print the annotation.
printAnnotation(OS, Annot);
}
void NVPTXInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNo);
if (Op.isReg()) {
unsigned Reg = Op.getReg();
printRegName(O, Reg);
} else if (Op.isImm()) {
O << markup("<imm:") << formatImm(Op.getImm()) << markup(">");
} else {
assert(Op.isExpr() && "Unknown operand kind in printOperand");
Op.getExpr()->print(O, &MAI);
}
}
void NVPTXInstPrinter::printCvtMode(const MCInst *MI, int OpNum, raw_ostream &O,
const char *Modifier) {
const MCOperand &MO = MI->getOperand(OpNum);
int64_t Imm = MO.getImm();
if (strcmp(Modifier, "ftz") == 0) {
// FTZ flag
if (Imm & NVPTX::PTXCvtMode::FTZ_FLAG)
O << ".ftz";
} else if (strcmp(Modifier, "sat") == 0) {
// SAT flag
if (Imm & NVPTX::PTXCvtMode::SAT_FLAG)
O << ".sat";
} else if (strcmp(Modifier, "base") == 0) {
// Default operand
switch (Imm & NVPTX::PTXCvtMode::BASE_MASK) {
default:
return;
case NVPTX::PTXCvtMode::NONE:
break;
case NVPTX::PTXCvtMode::RNI:
O << ".rni";
break;
case NVPTX::PTXCvtMode::RZI:
O << ".rzi";
break;
case NVPTX::PTXCvtMode::RMI:
O << ".rmi";
break;
case NVPTX::PTXCvtMode::RPI:
O << ".rpi";
break;
case NVPTX::PTXCvtMode::RN:
O << ".rn";
break;
case NVPTX::PTXCvtMode::RZ:
O << ".rz";
break;
case NVPTX::PTXCvtMode::RM:
O << ".rm";
break;
case NVPTX::PTXCvtMode::RP:
O << ".rp";
break;
}
} else {
llvm_unreachable("Invalid conversion modifier");
}
}
void NVPTXInstPrinter::printCmpMode(const MCInst *MI, int OpNum, raw_ostream &O,
const char *Modifier) {
const MCOperand &MO = MI->getOperand(OpNum);
int64_t Imm = MO.getImm();
if (strcmp(Modifier, "ftz") == 0) {
// FTZ flag
if (Imm & NVPTX::PTXCmpMode::FTZ_FLAG)
O << ".ftz";
} else if (strcmp(Modifier, "base") == 0) {
switch (Imm & NVPTX::PTXCmpMode::BASE_MASK) {
default:
return;
case NVPTX::PTXCmpMode::EQ:
O << ".eq";
break;
case NVPTX::PTXCmpMode::NE:
O << ".ne";
break;
case NVPTX::PTXCmpMode::LT:
O << ".lt";
break;
case NVPTX::PTXCmpMode::LE:
O << ".le";
break;
case NVPTX::PTXCmpMode::GT:
O << ".gt";
break;
case NVPTX::PTXCmpMode::GE:
O << ".ge";
break;
case NVPTX::PTXCmpMode::LO:
O << ".lo";
break;
case NVPTX::PTXCmpMode::LS:
O << ".ls";
break;
case NVPTX::PTXCmpMode::HI:
O << ".hi";
break;
case NVPTX::PTXCmpMode::HS:
O << ".hs";
break;
case NVPTX::PTXCmpMode::EQU:
O << ".equ";
break;
case NVPTX::PTXCmpMode::NEU:
O << ".neu";
break;
case NVPTX::PTXCmpMode::LTU:
O << ".ltu";
break;
case NVPTX::PTXCmpMode::LEU:
O << ".leu";
break;
case NVPTX::PTXCmpMode::GTU:
O << ".gtu";
break;
case NVPTX::PTXCmpMode::GEU:
O << ".geu";
break;
case NVPTX::PTXCmpMode::NUM:
O << ".num";
break;
case NVPTX::PTXCmpMode::NotANumber:
O << ".nan";
break;
}
} else {
llvm_unreachable("Empty Modifier");
}
}
void NVPTXInstPrinter::printLdStCode(const MCInst *MI, int OpNum,
raw_ostream &O, const char *Modifier) {
if (Modifier) {
const MCOperand &MO = MI->getOperand(OpNum);
int Imm = (int) MO.getImm();
if (!strcmp(Modifier, "volatile")) {
if (Imm)
O << ".volatile";
} else if (!strcmp(Modifier, "addsp")) {
switch (Imm) {
case NVPTX::PTXLdStInstCode::GLOBAL:
O << ".global";
break;
case NVPTX::PTXLdStInstCode::SHARED:
O << ".shared";
break;
case NVPTX::PTXLdStInstCode::LOCAL:
O << ".local";
break;
case NVPTX::PTXLdStInstCode::PARAM:
O << ".param";
break;
case NVPTX::PTXLdStInstCode::CONSTANT:
O << ".const";
break;
case NVPTX::PTXLdStInstCode::GENERIC:
break;
default:
llvm_unreachable("Wrong Address Space");
}
} else if (!strcmp(Modifier, "sign")) {
if (Imm == NVPTX::PTXLdStInstCode::Signed)
O << "s";
else if (Imm == NVPTX::PTXLdStInstCode::Unsigned)
O << "u";
else if (Imm == NVPTX::PTXLdStInstCode::Untyped)
O << "b";
else if (Imm == NVPTX::PTXLdStInstCode::Float)
O << "f";
else
llvm_unreachable("Unknown register type");
} else if (!strcmp(Modifier, "vec")) {
if (Imm == NVPTX::PTXLdStInstCode::V2)
O << ".v2";
else if (Imm == NVPTX::PTXLdStInstCode::V4)
O << ".v4";
} else
llvm_unreachable("Unknown Modifier");
} else
llvm_unreachable("Empty Modifier");
}
void NVPTXInstPrinter::printMmaCode(const MCInst *MI, int OpNum, raw_ostream &O,
const char *Modifier) {
const MCOperand &MO = MI->getOperand(OpNum);
int Imm = (int)MO.getImm();
if (Modifier == nullptr || strcmp(Modifier, "version") == 0) {
O << Imm; // Just print out PTX version
} else if (strcmp(Modifier, "aligned") == 0) {
// PTX63 requires '.aligned' in the name of the instruction.
if (Imm >= 63)
O << ".aligned";
} else
llvm_unreachable("Unknown Modifier");
}
void NVPTXInstPrinter::printMemOperand(const MCInst *MI, int OpNum,
raw_ostream &O, const char *Modifier) {
printOperand(MI, OpNum, O);
if (Modifier && !strcmp(Modifier, "add")) {
O << ", ";
printOperand(MI, OpNum + 1, O);
} else {
if (MI->getOperand(OpNum + 1).isImm() &&
MI->getOperand(OpNum + 1).getImm() == 0)
return; // don't print ',0' or '+0'
O << "+";
printOperand(MI, OpNum + 1, O);
}
}
void NVPTXInstPrinter::printProtoIdent(const MCInst *MI, int OpNum,
raw_ostream &O, const char *Modifier) {
const MCOperand &Op = MI->getOperand(OpNum);
assert(Op.isExpr() && "Call prototype is not an MCExpr?");
const MCExpr *Expr = Op.getExpr();
const MCSymbol &Sym = cast<MCSymbolRefExpr>(Expr)->getSymbol();
O << Sym.getName();
}
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