namespace {
- class R600CodeEmitter : public MachineFunctionPass, public AMDILCodeEmitter {
+class R600CodeEmitter : public MachineFunctionPass, public AMDILCodeEmitter {
- private:
+private:
static char ID;
formatted_raw_ostream &_OS;
const TargetMachine * TM;
const MachineRegisterInfo * MRI;
const R600RegisterInfo * TRI;
- bool evergreenEncoding;
bool isCube;
bool isReduction;
unsigned section_start;
- public:
+public:
R600CodeEmitter(formatted_raw_ostream &OS) : MachineFunctionPass(ID),
- _OS(OS), TM(NULL), evergreenEncoding(false), isCube(false), isReduction(false),
+ _OS(OS), TM(NULL), isCube(false), isReduction(false),
isLast(true) { }
const char *getPassName() const { return "AMDGPU Machine Code Emitter"; }
virtual uint64_t getMachineOpValue(const MachineInstr &MI,
const MachineOperand &MO) const;
- private:
+private:
void emitALUInstr(MachineInstr &MI);
void emitSrc(const MachineOperand & MO, int chan_override = -1);
void emitTexInstr(MachineInstr &MI);
void emitFCInstr(MachineInstr &MI);
- unsigned int getHWInst(const MachineInstr &MI);
-
void emitNullBytes(unsigned int byteCount);
void emitByte(unsigned int byte);
};
-} /* End anonymous namespace */
-
-#define WRITE_MASK_X 0x1
-#define WRITE_MASK_Y 0x2
-#define WRITE_MASK_Z 0x4
-#define WRITE_MASK_W 0x8
+} // End anonymous namespace
enum RegElement {
ELEMENT_X = 0,
enum TextureTypes {
TEXTURE_1D = 1,
- TEXTURE_2D,
+ TEXTURE_2D,
TEXTURE_3D,
TEXTURE_CUBE,
TEXTURE_RECT,
TEXTURE_SHADOW1D,
TEXTURE_SHADOW2D,
- TEXTURE_SHADOWRECT,
- TEXTURE_1D_ARRAY,
+ TEXTURE_SHADOWRECT,
+ TEXTURE_1D_ARRAY,
TEXTURE_2D_ARRAY,
TEXTURE_SHADOW1D_ARRAY,
TEXTURE_SHADOW2D_ARRAY
TRI = static_cast<const R600RegisterInfo *>(TM->getRegisterInfo());
const AMDILSubtarget &STM = TM->getSubtarget<AMDILSubtarget>();
std::string gpu = STM.getDeviceName();
- if (!gpu.compare(0,3, "rv7")) {
- evergreenEncoding = false;
- } else {
- evergreenEncoding = true;
- }
if (STM.dumpCode()) {
MF.dump();
case AMDIL::RAT_WRITE_CACHELESS_eg:
{
uint64_t inst = getBinaryCodeForInstr(MI);
- /* Set End Of Program bit */
- /* XXX: Need better check of end of program. EOP should be
- * encoded in one of the operands of the MI, and it should be
- * set in a prior pass. */
+ // Set End Of Program bit
+ // XXX: Need better check of end of program. EOP should be
+ // encoded in one of the operands of the MI, and it should be
+ // set in a prior pass.
MachineBasicBlock::iterator NextI = llvm::next(I);
MachineInstr &NextMI = *NextI;
if (NextMI.getOpcode() == AMDIL::RETURN) {
case AMDIL::VTX_READ_eg:
{
emitByte(INSTR_VTX);
- /* inst */
+ // inst
emitByte(0);
- /* fetch_type */
+ // fetch_type
emitByte(2);
- /* buffer_id */
+ // buffer_id
emitByte(MI.getOperand(2).getImm());
- /* src_gpr */
+ // src_gpr
emitByte(getHWReg(MI.getOperand(1).getReg()));
- /* src_sel_x */
+ // src_sel_x
emitByte(TRI->getHWRegChan(MI.getOperand(1).getReg()));
- /* mega_fetch_count */
+ // mega_fetch_count
emitByte(3);
- /* dst_gpr */
+ // dst_gpr
emitByte(getHWReg(MI.getOperand(0).getReg()));
- /* dst_sel_x */
+ // dst_sel_x
emitByte(0);
- /* dst_sel_y */
+ // dst_sel_y
emitByte(7);
- /* dst_sel_z */
+ // dst_sel_z
emitByte(7);
- /* dst_sel_w */
+ // dst_sel_w
emitByte(7);
- /* use_const_fields */
+ // use_const_fields
emitByte(1);
- /* data_format */
+ // data_format
emitByte(0);
- /* num_format_all */
+ // num_format_all
emitByte(0);
- /* format_comp_all */
+ // format_comp_all
emitByte(0);
- /* srf_mode_all */
+ // srf_mode_all
emitByte(0);
- /* offset */
+ // offset
emitByte(0);
- /* endian */
+ // endian
emitByte(0);
break;
}
unsigned numOperands = MI.getNumExplicitOperands();
- /* Some instructions are just place holder instructions that represent
- * operations that the GPU does automatically. They should be ignored. */
+ // Some instructions are just place holder instructions that represent
+ // operations that the GPU does automatically. They should be ignored.
if (AMDGPU::isPlaceHolderOpcode(MI.getOpcode())) {
return;
}
- /* We need to handle some opcodes differently */
- switch (MI.getOpcode()) {
- default: break;
-
- /* XXX: Temp Hack */
- case AMDIL::STORE_OUTPUT:
- numOperands = 2;
- break;
- }
-
- /* XXX Check if instruction writes a result */
+ // XXX Check if instruction writes a result
if (numOperands < 1) {
return;
}
const MachineOperand dstOp = MI.getOperand(0);
- /* Emit instruction type */
+ // Emit instruction type
emitByte(0);
if (isCube) {
} else {
unsigned int opIndex;
for (opIndex = 1; opIndex < numOperands; opIndex++) {
- /* Literal constants are always stored as the last operand. */
+ // Literal constants are always stored as the last operand.
if (MI.getOperand(opIndex).isImm() || MI.getOperand(opIndex).isFPImm()) {
break;
}
emitSrc(MI.getOperand(opIndex));
}
- /* Emit zeros for unused sources */
+ // Emit zeros for unused sources
for ( ; opIndex < 4; opIndex++) {
emitNullBytes(SRC_BYTE_COUNT);
}
emitALU(MI, numOperands - 1);
}
-void R600CodeEmitter::emitSrc(const MachineOperand & MO, int chan_override /* = -1 */)
+void R600CodeEmitter::emitSrc(const MachineOperand & MO, int chan_override)
{
uint32_t value = 0;
- /* Emit the source select (2 bytes). For GPRs, this is the register index.
- * For other potential instruction operands, (e.g. constant registers) the
- * value of the source select is defined in the r600isa docs. */
+ // Emit the source select (2 bytes). For GPRs, this is the register index.
+ // For other potential instruction operands, (e.g. constant registers) the
+ // value of the source select is defined in the r600isa docs.
if (MO.isReg()) {
unsigned reg = MO.getReg();
emitTwoBytes(getHWReg(reg));
}
}
} else {
- /* XXX: Handle other operand types. */
+ // XXX: Handle other operand types.
emitTwoBytes(0);
}
- /* Emit the source channel (1 byte) */
+ // Emit the source channel (1 byte)
if (chan_override != -1) {
emitByte(chan_override);
} else if (isReduction) {
emitByte(0);
}
- /* XXX: Emit isNegated (1 byte) */
+ // XXX: Emit isNegated (1 byte)
if ((!(MO.getTargetFlags() & MO_FLAG_ABS))
&& (MO.getTargetFlags() & MO_FLAG_NEG ||
(MO.isReg() &&
emitByte(0);
}
- /* Emit isAbsolute (1 byte) */
+ // Emit isAbsolute (1 byte)
if (MO.getTargetFlags() & MO_FLAG_ABS) {
emitByte(1);
} else {
emitByte(0);
}
- /* XXX: Emit relative addressing mode (1 byte) */
+ // XXX: Emit relative addressing mode (1 byte)
emitByte(0);
- /* Emit kc_bank, This will be adjusted later by r600_asm */
+ // Emit kc_bank, This will be adjusted later by r600_asm
emitByte(0);
- /* Emit the literal value, if applicable (4 bytes). */
+ // Emit the literal value, if applicable (4 bytes).
emit(value);
}
void R600CodeEmitter::emitDst(const MachineOperand & MO)
{
if (MO.isReg()) {
- /* Emit the destination register index (1 byte) */
+ // Emit the destination register index (1 byte)
emitByte(getHWReg(MO.getReg()));
- /* Emit the element of the destination register (1 byte)*/
+ // Emit the element of the destination register (1 byte)
if (isReduction || isCube) {
emitByte(currentElement);
} else {
emitByte(TRI->getHWRegChan(MO.getReg()));
}
- /* Emit isClamped (1 byte) */
+ // Emit isClamped (1 byte)
if (MO.getTargetFlags() & MO_FLAG_CLAMP) {
emitByte(1);
} else {
emitByte(0);
}
- /* Emit writemask (1 byte). */
+ // Emit writemask (1 byte).
if ((isReduction && currentElement != TRI->getHWRegChan(MO.getReg()))
|| MO.getTargetFlags() & MO_FLAG_MASK) {
emitByte(0);
emitByte(1);
}
- /* XXX: Emit relative addressing mode */
+ // XXX: Emit relative addressing mode
emitByte(0);
} else {
- /* XXX: Handle other operand types. Are there any for destination regs? */
+ // XXX: Handle other operand types. Are there any for destination regs?
emitNullBytes(DST_BYTE_COUNT);
}
}
void R600CodeEmitter::emitALU(MachineInstr &MI, unsigned numSrc)
{
- /* Emit the instruction (2 bytes) */
- emitTwoBytes(getHWInst(MI));
+ // Emit the instruction (2 bytes)
+ emitTwoBytes(getBinaryCodeForInstr(MI));
- /* Emit isLast (for this instruction group) (1 byte) */
+ // Emit isLast (for this instruction group) (1 byte)
if (isLast) {
emitByte(1);
} else {
emitByte(0);
}
- /* Emit isOp3 (1 byte) */
+ // Emit isOp3 (1 byte)
if (numSrc == 3) {
emitByte(1);
} else {
emitByte(0);
}
- /* XXX: Emit predicate (1 byte) */
+ // XXX: Emit predicate (1 byte)
emitByte(0);
- /* XXX: Emit bank swizzle. (1 byte) Do we need this? It looks like
- * r600_asm.c sets it. */
+ // XXX: Emit bank swizzle. (1 byte) Do we need this? It looks like
+ // r600_asm.c sets it.
emitByte(0);
- /* XXX: Emit bank_swizzle_force (1 byte) Not sure what this is for. */
+ // XXX: Emit bank_swizzle_force (1 byte) Not sure what this is for.
emitByte(0);
- /* XXX: Emit OMOD (1 byte) Not implemented. */
+ // XXX: Emit OMOD (1 byte) Not implemented.
emitByte(0);
- /* XXX: Emit index_mode. I think this is for indirect addressing, so we
- * don't need to worry about it. */
+ // XXX: Emit index_mode. I think this is for indirect addressing, so we
+ // don't need to worry about it.
emitByte(0);
}
unsigned opcode = MI.getOpcode();
unsigned srcSelect[4] = {0, 1, 2, 3};
- /* Emit instruction type */
+ // Emit instruction type
emitByte(1);
- /* Emit instruction */
- emitByte(getHWInst(MI));
+ // Emit instruction
+ emitByte(getBinaryCodeForInstr(MI));
- /* XXX: Emit resource id r600_shader.c uses sampler + 1. Why? */
+ // XXX: Emit resource id r600_shader.c uses sampler + 1. Why?
emitByte(sampler + 1 + 1);
- /* Emit source register */
+ // Emit source register
emitByte(getHWReg(MI.getOperand(1).getReg()));
- /* XXX: Emit src isRelativeAddress */
+ // XXX: Emit src isRelativeAddress
emitByte(0);
- /* Emit destination register */
+ // Emit destination register
emitByte(getHWReg(MI.getOperand(0).getReg()));
- /* XXX: Emit dst isRealtiveAddress */
+ // XXX: Emit dst isRealtiveAddress
emitByte(0);
- /* XXX: Emit dst select */
- emitByte(0); /* X */
- emitByte(1); /* Y */
- emitByte(2); /* Z */
- emitByte(3); /* W */
+ // XXX: Emit dst select
+ emitByte(0); // X
+ emitByte(1); // Y
+ emitByte(2); // Z
+ emitByte(3); // W
- /* XXX: Emit lod bias */
+ // XXX: Emit lod bias
emitByte(0);
- /* XXX: Emit coord types */
+ // XXX: Emit coord types
unsigned coordType[4] = {1, 1, 1, 1};
if (textureType == TEXTURE_RECT
emitByte(coordType[i]);
}
- /* XXX: Emit offsets */
- emitByte(0); /* X */
- emitByte(0); /* Y */
- emitByte(0); /* Z */
- /* There is no OFFSET_W */
+ // XXX: Emit offsets
+ emitByte(0); // X
+ emitByte(0); // Y
+ emitByte(0); // Z
+ // There is no OFFSET_W
- /* Emit sampler id */
+ // Emit sampler id
emitByte(sampler);
- /* XXX:Emit source select */
+ // XXX:Emit source select
if ((textureType == TEXTURE_SHADOW1D
|| textureType == TEXTURE_SHADOW2D
|| textureType == TEXTURE_SHADOWRECT
void R600CodeEmitter::emitFCInstr(MachineInstr &MI)
{
- /* Emit instruction type */
+ // Emit instruction type
emitByte(INSTR_FC);
- /* Emit SRC */
+ // Emit SRC
unsigned numOperands = MI.getNumOperands();
if (numOperands > 0) {
assert(numOperands == 1);
emitNullBytes(SRC_BYTE_COUNT);
}
- /* Emit FC Instruction */
+ // Emit FC Instruction
enum FCInstr instr;
switch (MI.getOpcode()) {
case AMDIL::BREAK_LOGICALZ_f32:
case AMDIL::CONTINUE_LOGICALNZ_i32:
instr = FC_CONTINUE;
break;
- /* XXX: This assumes that all IFs will be if (x != 0). If we add
- * optimizations this might not be the case */
case AMDIL::IF_LOGICALNZ_f32:
case AMDIL::IF_LOGICALNZ_i32:
instr = FC_IF;
emitByte(instr);
}
-#define INSTR_FLOAT2_V(inst, hw) \
- case AMDIL:: inst##_v4f32: \
- case AMDIL:: inst##_v2f32: return HW_INST2(hw);
-
-#define INSTR_FLOAT2_S(inst, hw) \
- case AMDIL:: inst##_f32: return HW_INST2(hw);
-
-#define INSTR_FLOAT2(inst, hw) \
- INSTR_FLOAT2_V(inst, hw) \
- INSTR_FLOAT2_S(inst, hw)
-
-unsigned int R600CodeEmitter::getHWInst(const MachineInstr &MI)
-{
-
- /* XXX: Lower these to MOV before the code emitter. */
- switch (MI.getOpcode()) {
- case AMDIL::STORE_OUTPUT:
- case AMDIL::VCREATE_v4i32:
- case AMDIL::LOADCONST_i32:
- case AMDIL::LOADCONST_f32:
- case AMDIL::MOVE_v4i32:
- /* Instructons to reinterpret bits as ... */
- case AMDIL::IL_ASINT_f32:
- case AMDIL::IL_ASINT_i32:
- case AMDIL::IL_ASFLOAT_f32:
- case AMDIL::IL_ASFLOAT_i32:
- return 0x19;
-
- default:
- return getBinaryCodeForInstr(MI);
- }
-}
-
void R600CodeEmitter::emitNullBytes(unsigned int byteCount)
{
for (unsigned int i = 0; i < byteCount; i++) {
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