1 //===-- NVPTXInstPrinter.cpp - PTX assembly instruction printing ----------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // Print MCInst instructions to .ptx format.
11 //===----------------------------------------------------------------------===//
13 #include "MCTargetDesc/NVPTXInstPrinter.h"
14 #include "MCTargetDesc/NVPTXBaseInfo.h"
16 #include "llvm/MC/MCExpr.h"
17 #include "llvm/MC/MCInst.h"
18 #include "llvm/MC/MCInstrInfo.h"
19 #include "llvm/MC/MCSubtargetInfo.h"
20 #include "llvm/MC/MCSymbol.h"
21 #include "llvm/Support/ErrorHandling.h"
22 #include "llvm/Support/FormattedStream.h"
26 #define DEBUG_TYPE "asm-printer"
28 #include "NVPTXGenAsmWriter.inc"
30 NVPTXInstPrinter::NVPTXInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
31 const MCRegisterInfo &MRI)
32 : MCInstPrinter(MAI, MII, MRI) {}
34 void NVPTXInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
35 // Decode the virtual register
36 // Must be kept in sync with NVPTXAsmPrinter::encodeVirtualRegister
37 unsigned RCId = (RegNo >> 28);
39 default: report_fatal_error("Bad virtual register encoding");
41 // This is actually a physical register, so defer to the autogenerated
43 OS << getRegisterName(RegNo);
71 unsigned VReg = RegNo & 0x0FFFFFFF;
75 void NVPTXInstPrinter::printInst(const MCInst *MI, raw_ostream &OS,
76 StringRef Annot, const MCSubtargetInfo &STI) {
77 printInstruction(MI, OS);
79 // Next always print the annotation.
80 printAnnotation(OS, Annot);
83 void NVPTXInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
85 const MCOperand &Op = MI->getOperand(OpNo);
87 unsigned Reg = Op.getReg();
89 } else if (Op.isImm()) {
90 O << markup("<imm:") << formatImm(Op.getImm()) << markup(">");
92 assert(Op.isExpr() && "Unknown operand kind in printOperand");
93 Op.getExpr()->print(O, &MAI);
97 void NVPTXInstPrinter::printCvtMode(const MCInst *MI, int OpNum, raw_ostream &O,
98 const char *Modifier) {
99 const MCOperand &MO = MI->getOperand(OpNum);
100 int64_t Imm = MO.getImm();
102 if (strcmp(Modifier, "ftz") == 0) {
104 if (Imm & NVPTX::PTXCvtMode::FTZ_FLAG)
106 } else if (strcmp(Modifier, "sat") == 0) {
108 if (Imm & NVPTX::PTXCvtMode::SAT_FLAG)
110 } else if (strcmp(Modifier, "base") == 0) {
112 switch (Imm & NVPTX::PTXCvtMode::BASE_MASK) {
115 case NVPTX::PTXCvtMode::NONE:
117 case NVPTX::PTXCvtMode::RNI:
120 case NVPTX::PTXCvtMode::RZI:
123 case NVPTX::PTXCvtMode::RMI:
126 case NVPTX::PTXCvtMode::RPI:
129 case NVPTX::PTXCvtMode::RN:
132 case NVPTX::PTXCvtMode::RZ:
135 case NVPTX::PTXCvtMode::RM:
138 case NVPTX::PTXCvtMode::RP:
143 llvm_unreachable("Invalid conversion modifier");
147 void NVPTXInstPrinter::printCmpMode(const MCInst *MI, int OpNum, raw_ostream &O,
148 const char *Modifier) {
149 const MCOperand &MO = MI->getOperand(OpNum);
150 int64_t Imm = MO.getImm();
152 if (strcmp(Modifier, "ftz") == 0) {
154 if (Imm & NVPTX::PTXCmpMode::FTZ_FLAG)
156 } else if (strcmp(Modifier, "base") == 0) {
157 switch (Imm & NVPTX::PTXCmpMode::BASE_MASK) {
160 case NVPTX::PTXCmpMode::EQ:
163 case NVPTX::PTXCmpMode::NE:
166 case NVPTX::PTXCmpMode::LT:
169 case NVPTX::PTXCmpMode::LE:
172 case NVPTX::PTXCmpMode::GT:
175 case NVPTX::PTXCmpMode::GE:
178 case NVPTX::PTXCmpMode::LO:
181 case NVPTX::PTXCmpMode::LS:
184 case NVPTX::PTXCmpMode::HI:
187 case NVPTX::PTXCmpMode::HS:
190 case NVPTX::PTXCmpMode::EQU:
193 case NVPTX::PTXCmpMode::NEU:
196 case NVPTX::PTXCmpMode::LTU:
199 case NVPTX::PTXCmpMode::LEU:
202 case NVPTX::PTXCmpMode::GTU:
205 case NVPTX::PTXCmpMode::GEU:
208 case NVPTX::PTXCmpMode::NUM:
211 case NVPTX::PTXCmpMode::NotANumber:
216 llvm_unreachable("Empty Modifier");
220 void NVPTXInstPrinter::printLdStCode(const MCInst *MI, int OpNum,
221 raw_ostream &O, const char *Modifier) {
223 const MCOperand &MO = MI->getOperand(OpNum);
224 int Imm = (int) MO.getImm();
225 if (!strcmp(Modifier, "volatile")) {
228 } else if (!strcmp(Modifier, "addsp")) {
230 case NVPTX::PTXLdStInstCode::GLOBAL:
233 case NVPTX::PTXLdStInstCode::SHARED:
236 case NVPTX::PTXLdStInstCode::LOCAL:
239 case NVPTX::PTXLdStInstCode::PARAM:
242 case NVPTX::PTXLdStInstCode::CONSTANT:
245 case NVPTX::PTXLdStInstCode::GENERIC:
248 llvm_unreachable("Wrong Address Space");
250 } else if (!strcmp(Modifier, "sign")) {
251 if (Imm == NVPTX::PTXLdStInstCode::Signed)
253 else if (Imm == NVPTX::PTXLdStInstCode::Unsigned)
255 else if (Imm == NVPTX::PTXLdStInstCode::Untyped)
257 else if (Imm == NVPTX::PTXLdStInstCode::Float)
260 llvm_unreachable("Unknown register type");
261 } else if (!strcmp(Modifier, "vec")) {
262 if (Imm == NVPTX::PTXLdStInstCode::V2)
264 else if (Imm == NVPTX::PTXLdStInstCode::V4)
267 llvm_unreachable("Unknown Modifier");
269 llvm_unreachable("Empty Modifier");
272 void NVPTXInstPrinter::printMmaCode(const MCInst *MI, int OpNum, raw_ostream &O,
273 const char *Modifier) {
274 const MCOperand &MO = MI->getOperand(OpNum);
275 int Imm = (int)MO.getImm();
276 if (Modifier == nullptr || strcmp(Modifier, "version") == 0) {
277 O << Imm; // Just print out PTX version
278 } else if (strcmp(Modifier, "aligned") == 0) {
279 // PTX63 requires '.aligned' in the name of the instruction.
283 llvm_unreachable("Unknown Modifier");
286 void NVPTXInstPrinter::printMemOperand(const MCInst *MI, int OpNum,
287 raw_ostream &O, const char *Modifier) {
288 printOperand(MI, OpNum, O);
290 if (Modifier && !strcmp(Modifier, "add")) {
292 printOperand(MI, OpNum + 1, O);
294 if (MI->getOperand(OpNum + 1).isImm() &&
295 MI->getOperand(OpNum + 1).getImm() == 0)
296 return; // don't print ',0' or '+0'
298 printOperand(MI, OpNum + 1, O);
302 void NVPTXInstPrinter::printProtoIdent(const MCInst *MI, int OpNum,
303 raw_ostream &O, const char *Modifier) {
304 const MCOperand &Op = MI->getOperand(OpNum);
305 assert(Op.isExpr() && "Call prototype is not an MCExpr?");
306 const MCExpr *Expr = Op.getExpr();
307 const MCSymbol &Sym = cast<MCSymbolRefExpr>(Expr)->getSymbol();