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https://github.com/KytyPS5/KytyPS5.git
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TheCruZ
95 lines
4.1 KiB
C++
95 lines
4.1 KiB
C++
#include "graphics/shader/recompiler/frontend/translate/Translator.h"
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#include <bit>
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#include <utility>
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namespace Libs::Graphics::ShaderRecompiler::Frontend {
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void Translator::EmitCompareResult(const Decoder::Instruction& inst, IR::U1 value, bool scalar,
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bool cmpx) {
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if (scalar) {
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ir.SetScc(value);
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return;
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}
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const auto masked = ir.LogicalAnd(ir.GetExec(), value);
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if (cmpx) {
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const auto mask = BallotMask(masked);
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ir.SetExec(masked);
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ir.SetExecLo(mask[0]);
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ir.SetExecHi(mask[1]);
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return;
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}
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WriteMask(inst.dst, masked);
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}
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void Translator::EmitCompareConstant(const Decoder::Instruction& inst, bool value, bool scalar,
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bool cmpx) {
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EmitCompareResult(inst, IR::U1(IR::Value(value)), scalar, cmpx);
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}
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void Translator::EmitIntegerCompare(const Decoder::Instruction& inst, IR::ValueOpcode opcode,
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IR::Type type, bool scalar, bool cmpx, bool swap_operands) {
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// The equality compares share their IR opcode with the unsigned ones.
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const bool signed_64 = opcode == IR::ValueOpcode::SLessThan64 ||
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opcode == IR::ValueOpcode::SLessThanEqual64 ||
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inst.opcode == Decoder::Opcode::V_CMP_EQ_I64 ||
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inst.opcode == Decoder::Opcode::V_CMPX_EQ_I64 ||
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inst.opcode == Decoder::Opcode::V_CMP_NE_I64 ||
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inst.opcode == Decoder::Opcode::V_CMPX_NE_I64;
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const auto read = [&](const Decoder::Operand& operand) {
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// RDNA2 expands signed 64-bit integer literals by sign extension.
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if (signed_64 && operand.kind == Decoder::OperandKind::LiteralConstant) {
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return IR::Value(static_cast<uint64_t>(
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static_cast<int64_t>(std::bit_cast<int32_t>(operand.value))));
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}
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return ReadOperand(operand, type);
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};
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auto lhs = read(inst.src0);
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auto rhs = read(inst.src1);
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if (swap_operands) {
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std::swap(lhs, rhs);
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}
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EmitCompareResult(inst, IR::U1(ir.Emit(opcode, {lhs, rhs})), scalar, cmpx);
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}
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void Translator::EmitInteger16Compare(const Decoder::Instruction& inst, IR::ValueOpcode opcode,
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bool signed_value, bool cmpx) {
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const auto lhs = ReadU16AsU32(inst.src0, signed_value);
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const auto rhs = ReadU16AsU32(inst.src1, signed_value);
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EmitCompareResult(inst, IR::U1(ir.Emit(opcode, {lhs, rhs})), false, cmpx);
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}
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void Translator::EmitFloatCompare(const Decoder::Instruction& inst, IR::ValueOpcode opcode,
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bool half, bool cmpx) {
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const auto type = IR::ArgTypeOf(opcode, 0);
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const auto lhs =
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half ? IR::Value(ReadF16AsF32(inst.src0)) : ReadOperand(inst.src0, type);
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const auto rhs =
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half ? IR::Value(ReadF16AsF32(inst.src1)) : ReadOperand(inst.src1, type);
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const IR::FPCompareFlags flags{
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.flush_input_denorms = !half && type == IR::Type::F32 && flush_f32_inputs};
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EmitCompareResult(inst, IR::U1(ir.Emit(opcode, {lhs, rhs}, flags)), false, cmpx);
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}
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void Translator::EmitFloatOrderedCompare(const Decoder::Instruction& inst, bool ordered, bool cmpx,
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bool is64) {
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const auto type = is64 ? IR::Type::F64 : IR::Type::F32;
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const auto is_nan_op = is64 ? IR::ValueOpcode::FPIsNan64 : IR::ValueOpcode::FPIsNan32;
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const auto lhs = ReadOperand(inst.src0, type);
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const auto rhs = ReadOperand(inst.src1, type);
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const auto unordered = ir.LogicalOr(IR::U1(ir.Emit(is_nan_op, {lhs})),
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IR::U1(ir.Emit(is_nan_op, {rhs})));
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EmitCompareResult(inst, ordered ? ir.LogicalNot(unordered) : unordered, false, cmpx);
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}
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void Translator::EmitFloatClassCompare(const Decoder::Instruction& inst, bool cmpx, bool half) {
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const auto value = half ? IR::Value(Read16LaneBits(inst.src0, false))
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: ReadOperand(inst.src0, IR::Type::F32);
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const auto mask = half ? IR::Value(Read16LaneBits(inst.src1, false))
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: ReadOperand(inst.src1, IR::Type::U32);
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const auto opcode = half ? IR::ValueOpcode::FPCmpClass16 : IR::ValueOpcode::FPCmpClass32;
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EmitCompareResult(inst, IR::U1(ir.Emit(opcode, {value, mask})), false, cmpx);
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}
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} // namespace Libs::Graphics::ShaderRecompiler::Frontend
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