1 //===-- NVPTXInstPrinter.cpp - PTX assembly instruction printing ----------===//
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 // Print MCInst instructions to .ptx format.
12 //===----------------------------------------------------------------------===//
14 #include "InstPrinter/NVPTXInstPrinter.h"
15 #include "MCTargetDesc/NVPTXBaseInfo.h"
17 #include "llvm/MC/MCExpr.h"
18 #include "llvm/MC/MCInst.h"
19 #include "llvm/MC/MCInstrInfo.h"
20 #include "llvm/MC/MCSubtargetInfo.h"
21 #include "llvm/MC/MCSymbol.h"
22 #include "llvm/Support/ErrorHandling.h"
23 #include "llvm/Support/FormattedStream.h"
27 #define DEBUG_TYPE "asm-printer"
29 #include "NVPTXGenAsmWriter.inc"
32 NVPTXInstPrinter::NVPTXInstPrinter(const MCAsmInfo &MAI, const MCInstrInfo &MII,
33 const MCRegisterInfo &MRI,
34 const MCSubtargetInfo &STI)
35 : MCInstPrinter(MAI, MII, MRI) {
36 setAvailableFeatures(STI.getFeatureBits());
39 void NVPTXInstPrinter::printRegName(raw_ostream &OS, unsigned RegNo) const {
40 // Decode the virtual register
41 // Must be kept in sync with NVPTXAsmPrinter::encodeVirtualRegister
42 unsigned RCId = (RegNo >> 28);
44 default: report_fatal_error("Bad virtual register encoding");
46 // This is actually a physical register, so defer to the autogenerated
48 OS << getRegisterName(RegNo);
70 unsigned VReg = RegNo & 0x0FFFFFFF;
74 void NVPTXInstPrinter::printInst(const MCInst *MI, raw_ostream &OS,
76 printInstruction(MI, OS);
78 // Next always print the annotation.
79 printAnnotation(OS, Annot);
82 void NVPTXInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
84 const MCOperand &Op = MI->getOperand(OpNo);
86 unsigned Reg = Op.getReg();
88 } else if (Op.isImm()) {
89 O << markup("<imm:") << formatImm(Op.getImm()) << markup(">");
91 assert(Op.isExpr() && "Unknown operand kind in printOperand");
96 void NVPTXInstPrinter::printCvtMode(const MCInst *MI, int OpNum, raw_ostream &O,
97 const char *Modifier) {
98 const MCOperand &MO = MI->getOperand(OpNum);
99 int64_t Imm = MO.getImm();
101 if (strcmp(Modifier, "ftz") == 0) {
103 if (Imm & NVPTX::PTXCvtMode::FTZ_FLAG)
105 } else if (strcmp(Modifier, "sat") == 0) {
107 if (Imm & NVPTX::PTXCvtMode::SAT_FLAG)
109 } else if (strcmp(Modifier, "base") == 0) {
111 switch (Imm & NVPTX::PTXCvtMode::BASE_MASK) {
114 case NVPTX::PTXCvtMode::NONE:
116 case NVPTX::PTXCvtMode::RNI:
119 case NVPTX::PTXCvtMode::RZI:
122 case NVPTX::PTXCvtMode::RMI:
125 case NVPTX::PTXCvtMode::RPI:
128 case NVPTX::PTXCvtMode::RN:
131 case NVPTX::PTXCvtMode::RZ:
134 case NVPTX::PTXCvtMode::RM:
137 case NVPTX::PTXCvtMode::RP:
142 llvm_unreachable("Invalid conversion modifier");
146 void NVPTXInstPrinter::printCmpMode(const MCInst *MI, int OpNum, raw_ostream &O,
147 const char *Modifier) {
148 const MCOperand &MO = MI->getOperand(OpNum);
149 int64_t Imm = MO.getImm();
151 if (strcmp(Modifier, "ftz") == 0) {
153 if (Imm & NVPTX::PTXCmpMode::FTZ_FLAG)
155 } else if (strcmp(Modifier, "base") == 0) {
156 switch (Imm & NVPTX::PTXCmpMode::BASE_MASK) {
159 case NVPTX::PTXCmpMode::EQ:
162 case NVPTX::PTXCmpMode::NE:
165 case NVPTX::PTXCmpMode::LT:
168 case NVPTX::PTXCmpMode::LE:
171 case NVPTX::PTXCmpMode::GT:
174 case NVPTX::PTXCmpMode::GE:
177 case NVPTX::PTXCmpMode::LO:
180 case NVPTX::PTXCmpMode::LS:
183 case NVPTX::PTXCmpMode::HI:
186 case NVPTX::PTXCmpMode::HS:
189 case NVPTX::PTXCmpMode::EQU:
192 case NVPTX::PTXCmpMode::NEU:
195 case NVPTX::PTXCmpMode::LTU:
198 case NVPTX::PTXCmpMode::LEU:
201 case NVPTX::PTXCmpMode::GTU:
204 case NVPTX::PTXCmpMode::GEU:
207 case NVPTX::PTXCmpMode::NUM:
210 case NVPTX::PTXCmpMode::NotANumber:
215 llvm_unreachable("Empty Modifier");
219 void NVPTXInstPrinter::printLdStCode(const MCInst *MI, int OpNum,
220 raw_ostream &O, const char *Modifier) {
222 const MCOperand &MO = MI->getOperand(OpNum);
223 int Imm = (int) MO.getImm();
224 if (!strcmp(Modifier, "volatile")) {
227 } else if (!strcmp(Modifier, "addsp")) {
229 case NVPTX::PTXLdStInstCode::GLOBAL:
232 case NVPTX::PTXLdStInstCode::SHARED:
235 case NVPTX::PTXLdStInstCode::LOCAL:
238 case NVPTX::PTXLdStInstCode::PARAM:
241 case NVPTX::PTXLdStInstCode::CONSTANT:
244 case NVPTX::PTXLdStInstCode::GENERIC:
247 llvm_unreachable("Wrong Address Space");
249 } else if (!strcmp(Modifier, "sign")) {
250 if (Imm == NVPTX::PTXLdStInstCode::Signed)
252 else if (Imm == NVPTX::PTXLdStInstCode::Unsigned)
256 } else if (!strcmp(Modifier, "vec")) {
257 if (Imm == NVPTX::PTXLdStInstCode::V2)
259 else if (Imm == NVPTX::PTXLdStInstCode::V4)
262 llvm_unreachable("Unknown Modifier");
264 llvm_unreachable("Empty Modifier");
267 void NVPTXInstPrinter::printMemOperand(const MCInst *MI, int OpNum,
268 raw_ostream &O, const char *Modifier) {
269 printOperand(MI, OpNum, O);
271 if (Modifier && !strcmp(Modifier, "add")) {
273 printOperand(MI, OpNum + 1, O);
275 if (MI->getOperand(OpNum + 1).isImm() &&
276 MI->getOperand(OpNum + 1).getImm() == 0)
277 return; // don't print ',0' or '+0'
279 printOperand(MI, OpNum + 1, O);
283 void NVPTXInstPrinter::printProtoIdent(const MCInst *MI, int OpNum,
284 raw_ostream &O, const char *Modifier) {
285 const MCOperand &Op = MI->getOperand(OpNum);
286 assert(Op.isExpr() && "Call prototype is not an MCExpr?");
287 const MCExpr *Expr = Op.getExpr();
288 const MCSymbol &Sym = cast<MCSymbolRefExpr>(Expr)->getSymbol();