diff options
Diffstat (limited to 'src/shader_recompiler')
| -rw-r--r-- | src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp index c2dbd7998..e88c0ffb6 100644 --- a/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp +++ b/src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp @@ -58,13 +58,6 @@ void IADD3(TranslatorVisitor& v, u64 insn, IR::U32 op_b, IR::U32 op_c) { BitField<51, 1, u64> neg_a; } iadd3{insn}; - if (iadd3.x != 0) { - throw NotImplementedException("IADD3 X"); - } - if (iadd3.cc != 0) { - throw NotImplementedException("IADD3 CC"); - } - IR::U32 op_a{v.X(iadd3.src_a)}; op_a = IntegerHalf(v.ir, op_a, iadd3.half_a); op_b = IntegerHalf(v.ir, op_b, iadd3.half_b); @@ -81,10 +74,32 @@ void IADD3(TranslatorVisitor& v, u64 insn, IR::U32 op_b, IR::U32 op_c) { } IR::U32 lhs{v.ir.IAdd(op_a, op_b)}; + IR::U1 of_1; + if (iadd3.cc != 0) { + of_1 = v.ir.GetOverflowFromOp(lhs); + } + if (iadd3.x != 0) { + const IR::U32 carry{v.ir.Select(v.ir.GetCFlag(), v.ir.Imm32(1), v.ir.Imm32(0))}; + lhs = v.ir.IAdd(lhs, carry); + } + if (iadd3.cc != 0 && iadd3.shift == Shift::Left) { + IR::U32 high_bits{v.ir.ShiftRightLogical(lhs, v.ir.Imm32(16))}; + of_1 = v.ir.LogicalOr(of_1, v.ir.INotEqual(v.ir.Imm32(0), high_bits)); + } lhs = IntegerShift(v.ir, lhs, iadd3.shift); const IR::U32 result{v.ir.IAdd(lhs, op_c)}; v.X(iadd3.dest_reg, result); + if (iadd3.cc != 0) { + // TODO: How does CC behave when X is set? + if (iadd3.x != 0) { + throw NotImplementedException("IADD3 X+CC"); + } + v.SetZFlag(v.ir.GetZeroFromOp(result)); + v.SetSFlag(v.ir.GetSignFromOp(result)); + v.SetCFlag(v.ir.GetCarryFromOp(result)); + v.SetOFlag(v.ir.LogicalOr(v.ir.GetOverflowFromOp(result), of_1)); + } } } // Anonymous namespace |