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shader/arithmetic_integer: Implement CC for IADD

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This commit is contained in:
ReinUsesLisp 2020-04-25 21:56:11 -03:00
parent ffc5ec6fa8
commit 255197e643
5 changed files with 43 additions and 4 deletions
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22
src/video_core/shader/decode/arithmetic_integer.cpp
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@ -40,10 +40,26 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) {
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::IAdd, op_a, op_b);
SetInternalFlagsFromInteger(bb, value, instr.generates_cc);
SetRegister(bb, instr.gpr0, value);
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: