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llvm-project/llvm/lib/Target/R600/InstPrinter/AMDGPUInstPrinter.cpp

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//===-- AMDGPUInstPrinter.cpp - AMDGPU MC Inst -> ASM ---------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
// \file
//===----------------------------------------------------------------------===//
#include "AMDGPUInstPrinter.h"
#include "MCTargetDesc/AMDGPUMCTargetDesc.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/Support/MathExtras.h"
using namespace llvm;
void AMDGPUInstPrinter::printInst(const MCInst *MI, raw_ostream &OS,
StringRef Annot) {
OS.flush();
printInstruction(MI, OS);
printAnnotation(OS, Annot);
}
void AMDGPUInstPrinter::printU8ImmOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
O << formatHex(MI->getOperand(OpNo).getImm() & 0xff);
}
void AMDGPUInstPrinter::printU16ImmOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
O << formatHex(MI->getOperand(OpNo).getImm() & 0xffff);
}
void AMDGPUInstPrinter::printU32ImmOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
O << formatHex(MI->getOperand(OpNo).getImm() & 0xffffffff);
}
void AMDGPUInstPrinter::printRegOperand(unsigned reg, raw_ostream &O) {
switch (reg) {
case AMDGPU::VCC:
O << "vcc";
return;
case AMDGPU::SCC:
O << "scc";
return;
case AMDGPU::EXEC:
O << "exec";
return;
case AMDGPU::M0:
O << "m0";
return;
default:
break;
}
char Type;
unsigned NumRegs;
if (MRI.getRegClass(AMDGPU::VGPR_32RegClassID).contains(reg)) {
Type = 'v';
NumRegs = 1;
} else if (MRI.getRegClass(AMDGPU::SGPR_32RegClassID).contains(reg)) {
Type = 's';
NumRegs = 1;
} else if (MRI.getRegClass(AMDGPU::VReg_64RegClassID).contains(reg)) {
Type = 'v';
NumRegs = 2;
} else if (MRI.getRegClass(AMDGPU::SReg_64RegClassID).contains(reg)) {
Type = 's';
NumRegs = 2;
} else if (MRI.getRegClass(AMDGPU::VReg_128RegClassID).contains(reg)) {
Type = 'v';
NumRegs = 4;
} else if (MRI.getRegClass(AMDGPU::SReg_128RegClassID).contains(reg)) {
Type = 's';
NumRegs = 4;
} else if (MRI.getRegClass(AMDGPU::VReg_96RegClassID).contains(reg)) {
Type = 'v';
NumRegs = 3;
} else if (MRI.getRegClass(AMDGPU::VReg_256RegClassID).contains(reg)) {
Type = 'v';
NumRegs = 8;
} else if (MRI.getRegClass(AMDGPU::SReg_256RegClassID).contains(reg)) {
Type = 's';
NumRegs = 8;
} else if (MRI.getRegClass(AMDGPU::VReg_512RegClassID).contains(reg)) {
Type = 'v';
NumRegs = 16;
} else if (MRI.getRegClass(AMDGPU::SReg_512RegClassID).contains(reg)) {
Type = 's';
NumRegs = 16;
} else {
O << getRegisterName(reg);
return;
}
// The low 8 bits of the encoding value is the register index, for both VGPRs
// and SGPRs.
unsigned RegIdx = MRI.getEncodingValue(reg) & ((1 << 8) - 1);
if (NumRegs == 1) {
O << Type << RegIdx;
return;
}
O << Type << '[' << RegIdx << ':' << (RegIdx + NumRegs - 1) << ']';
}
void AMDGPUInstPrinter::printImmediate(uint32_t Imm, raw_ostream &O) {
int32_t SImm = static_cast<int32_t>(Imm);
if (SImm >= -16 && SImm <= 64) {
O << SImm;
return;
}
if (Imm == FloatToBits(1.0f) ||
Imm == FloatToBits(-1.0f) ||
Imm == FloatToBits(0.5f) ||
Imm == FloatToBits(-0.5f) ||
Imm == FloatToBits(2.0f) ||
Imm == FloatToBits(-2.0f) ||
Imm == FloatToBits(4.0f) ||
Imm == FloatToBits(-4.0f)) {
O << BitsToFloat(Imm);
return;
}
O << formatHex(static_cast<uint64_t>(Imm));
}
void AMDGPUInstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNo);
if (Op.isReg()) {
switch (Op.getReg()) {
// This is the default predicate state, so we don't need to print it.
case AMDGPU::PRED_SEL_OFF:
break;
default:
printRegOperand(Op.getReg(), O);
break;
}
} else if (Op.isImm()) {
printImmediate(Op.getImm(), O);
} else if (Op.isFPImm()) {
O << Op.getFPImm();
} else if (Op.isExpr()) {
const MCExpr *Exp = Op.getExpr();
Exp->print(O);
} else {
assert(!"unknown operand type in printOperand");
}
}
void AMDGPUInstPrinter::printOperandAndMods(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
unsigned InputModifiers = MI->getOperand(OpNo).getImm();
if (InputModifiers & 0x1)
O << "-";
if (InputModifiers & 0x2)
O << "|";
printOperand(MI, OpNo + 1, O);
if (InputModifiers & 0x2)
O << "|";
}
void AMDGPUInstPrinter::printInterpSlot(const MCInst *MI, unsigned OpNum,
raw_ostream &O) {
unsigned Imm = MI->getOperand(OpNum).getImm();
if (Imm == 2) {
O << "P0";
} else if (Imm == 1) {
O << "P20";
} else if (Imm == 0) {
O << "P10";
} else {
assert(!"Invalid interpolation parameter slot");
}
}
void AMDGPUInstPrinter::printMemOperand(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printOperand(MI, OpNo, O);
O << ", ";
printOperand(MI, OpNo + 1, O);
}
void AMDGPUInstPrinter::printIfSet(const MCInst *MI, unsigned OpNo,
raw_ostream &O, StringRef Asm,
StringRef Default) {
const MCOperand &Op = MI->getOperand(OpNo);
assert(Op.isImm());
if (Op.getImm() == 1) {
O << Asm;
} else {
O << Default;
}
}
void AMDGPUInstPrinter::printAbs(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O, "|");
}
void AMDGPUInstPrinter::printClamp(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O, "_SAT");
}
void AMDGPUInstPrinter::printLiteral(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
int32_t Imm = MI->getOperand(OpNo).getImm();
O << Imm << '(' << BitsToFloat(Imm) << ')';
}
void AMDGPUInstPrinter::printLast(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O.indent(25 - O.GetNumBytesInBuffer()), "*", " ");
}
void AMDGPUInstPrinter::printNeg(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O, "-");
}
void AMDGPUInstPrinter::printOMOD(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
switch (MI->getOperand(OpNo).getImm()) {
default: break;
case 1:
O << " * 2.0";
break;
case 2:
O << " * 4.0";
break;
case 3:
O << " / 2.0";
break;
}
}
void AMDGPUInstPrinter::printRel(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O, "+");
}
void AMDGPUInstPrinter::printUpdateExecMask(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O, "ExecMask,");
}
void AMDGPUInstPrinter::printUpdatePred(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
printIfSet(MI, OpNo, O, "Pred,");
}
void AMDGPUInstPrinter::printWrite(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
const MCOperand &Op = MI->getOperand(OpNo);
if (Op.getImm() == 0) {
O << " (MASKED)";
}
}
void AMDGPUInstPrinter::printSel(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
const char * chans = "XYZW";
int sel = MI->getOperand(OpNo).getImm();
int chan = sel & 3;
sel >>= 2;
if (sel >= 512) {
sel -= 512;
int cb = sel >> 12;
sel &= 4095;
O << cb << "[" << sel << "]";
} else if (sel >= 448) {
sel -= 448;
O << sel;
} else if (sel >= 0){
O << sel;
}
if (sel >= 0)
O << "." << chans[chan];
}
void AMDGPUInstPrinter::printBankSwizzle(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
int BankSwizzle = MI->getOperand(OpNo).getImm();
switch (BankSwizzle) {
case 1:
O << "BS:VEC_021/SCL_122";
break;
case 2:
O << "BS:VEC_120/SCL_212";
break;
case 3:
O << "BS:VEC_102/SCL_221";
break;
case 4:
O << "BS:VEC_201";
break;
case 5:
O << "BS:VEC_210";
break;
default:
break;
}
return;
}
void AMDGPUInstPrinter::printRSel(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
unsigned Sel = MI->getOperand(OpNo).getImm();
switch (Sel) {
case 0:
O << "X";
break;
case 1:
O << "Y";
break;
case 2:
O << "Z";
break;
case 3:
O << "W";
break;
case 4:
O << "0";
break;
case 5:
O << "1";
break;
case 7:
O << "_";
break;
default:
break;
}
}
void AMDGPUInstPrinter::printCT(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
unsigned CT = MI->getOperand(OpNo).getImm();
switch (CT) {
case 0:
O << "U";
break;
case 1:
O << "N";
break;
default:
break;
}
}
void AMDGPUInstPrinter::printKCache(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
int KCacheMode = MI->getOperand(OpNo).getImm();
if (KCacheMode > 0) {
int KCacheBank = MI->getOperand(OpNo - 2).getImm();
O << "CB" << KCacheBank <<":";
int KCacheAddr = MI->getOperand(OpNo + 2).getImm();
int LineSize = (KCacheMode == 1)?16:32;
O << KCacheAddr * 16 << "-" << KCacheAddr * 16 + LineSize;
}
}
void AMDGPUInstPrinter::printSendMsg(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
unsigned SImm16 = MI->getOperand(OpNo).getImm();
unsigned Msg = SImm16 & 0xF;
if (Msg == 2 || Msg == 3) {
unsigned Op = (SImm16 >> 4) & 0xF;
if (Msg == 3)
O << "Gs_done(";
else
O << "Gs(";
if (Op == 0) {
O << "nop";
} else {
unsigned Stream = (SImm16 >> 8) & 0x3;
if (Op == 1)
O << "cut";
else if (Op == 2)
O << "emit";
else if (Op == 3)
O << "emit-cut";
O << " stream " << Stream;
}
O << "), [m0] ";
} else if (Msg == 1)
O << "interrupt ";
else if (Msg == 15)
O << "system ";
else
O << "unknown(" << Msg << ") ";
}
void AMDGPUInstPrinter::printWaitFlag(const MCInst *MI, unsigned OpNo,
raw_ostream &O) {
// Note: Mask values are taken from SIInsertWaits.cpp and not from ISA docs
// SIInsertWaits.cpp bits usage does not match ISA docs description but it
// works so it might be a misprint in docs.
unsigned SImm16 = MI->getOperand(OpNo).getImm();
unsigned Vmcnt = SImm16 & 0xF;
unsigned Expcnt = (SImm16 >> 4) & 0xF;
unsigned Lgkmcnt = (SImm16 >> 8) & 0xF;
if (Vmcnt != 0xF)
O << "vmcnt(" << Vmcnt << ") ";
if (Expcnt != 0x7)
O << "expcnt(" << Expcnt << ") ";
if (Lgkmcnt != 0x7)
O << "lgkmcnt(" << Lgkmcnt << ")";
}
#include "AMDGPUGenAsmWriter.inc"
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