diff options
Diffstat (limited to 'src/video_core/shader/decode/arithmetic_integer.cpp')
| -rw-r--r-- | src/video_core/shader/decode/arithmetic_integer.cpp | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/src/video_core/shader/decode/arithmetic_integer.cpp b/src/video_core/shader/decode/arithmetic_integer.cpp index 0f4c3103a..a041519b7 100644 --- a/src/video_core/shader/decode/arithmetic_integer.cpp +++ b/src/video_core/shader/decode/arithmetic_integer.cpp @@ -35,15 +35,38 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) { case OpCode::Id::IADD_C: case OpCode::Id::IADD_R: case OpCode::Id::IADD_IMM: { - UNIMPLEMENTED_IF_MSG(instr.alu.saturate_d, "IADD saturation not implemented"); + UNIMPLEMENTED_IF_MSG(instr.alu.saturate_d, "IADD.SAT"); + UNIMPLEMENTED_IF_MSG(instr.iadd.x && instr.generates_cc, "IADD.X Rd.CC"); op_a = GetOperandAbsNegInteger(op_a, false, instr.alu_integer.negate_a, true); op_b = GetOperandAbsNegInteger(op_b, false, instr.alu_integer.negate_b, true); - const Node value = Operation(OperationCode::IAdd, PRECISE, op_a, op_b); + Node value = Operation(OperationCode::UAdd, op_a, op_b); - SetInternalFlagsFromInteger(bb, value, instr.generates_cc); - SetRegister(bb, instr.gpr0, value); + if (instr.iadd.x) { + Node carry = GetInternalFlag(InternalFlag::Carry); + Node x = Operation(OperationCode::Select, std::move(carry), Immediate(1), Immediate(0)); + value = Operation(OperationCode::UAdd, std::move(value), std::move(x)); + } + + if (instr.generates_cc) { + const Node i0 = Immediate(0); + + Node zero = Operation(OperationCode::LogicalIEqual, value, i0); + Node sign = Operation(OperationCode::LogicalILessThan, value, i0); + Node carry = Operation(OperationCode::LogicalAddCarry, op_a, op_b); + + Node pos_a = Operation(OperationCode::LogicalIGreaterThan, op_a, i0); + Node pos_b = Operation(OperationCode::LogicalIGreaterThan, op_b, i0); + Node pos = Operation(OperationCode::LogicalAnd, std::move(pos_a), std::move(pos_b)); + Node overflow = Operation(OperationCode::LogicalAnd, pos, sign); + + SetInternalFlag(bb, InternalFlag::Zero, std::move(zero)); + SetInternalFlag(bb, InternalFlag::Sign, std::move(sign)); + SetInternalFlag(bb, InternalFlag::Carry, std::move(carry)); + SetInternalFlag(bb, InternalFlag::Overflow, std::move(overflow)); + } + SetRegister(bb, instr.gpr0, std::move(value)); break; } case OpCode::Id::IADD3_C: @@ -249,8 +272,8 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) { } case OpCode::Id::LEA_IMM: { const bool neg = instr.lea.imm.neg != 0; - return {Immediate(static_cast<u32>(instr.lea.imm.entry_a)), - GetOperandAbsNegInteger(GetRegister(instr.gpr8), false, neg, true), + return {GetOperandAbsNegInteger(GetRegister(instr.gpr8), false, neg, true), + Immediate(static_cast<u32>(instr.lea.imm.entry_a)), Immediate(static_cast<u32>(instr.lea.imm.entry_b))}; } case OpCode::Id::LEA_RZ: { |