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Code Issues Releases Activity

shader: Fix IADD3.CC

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This commit is contained in:
ameerj 2021-04-27 21:05:41 -04:00
parent 53acdda772
commit fb14820c86
1 changed files with 5 additions and 12 deletions
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17
src/shader_recompiler/frontend/maxwell/translate/impl/integer_add_three_input.cpp
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@ -73,21 +73,13 @@ void IADD3(TranslatorVisitor& v, u64 insn, IR::U32 op_b, IR::U32 op_c) {
op_c = v.ir.INeg(op_c); op_c = v.ir.INeg(op_c);
} }
IR::U32 lhs{v.ir.IAdd(op_a, op_b)}; IR::U32 lhs_1{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) { if (iadd3.x != 0) {
const IR::U32 carry{v.ir.Select(v.ir.GetCFlag(), v.ir.Imm32(1), v.ir.Imm32(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); lhs_1 = v.ir.IAdd(lhs_1, carry);
} }
if (iadd3.cc != 0 && iadd3.shift == Shift::Left) { const IR::U32 lhs_2{IntegerShift(v.ir, lhs_1, iadd3.shift)};
const IR::U32 high_bits{v.ir.ShiftRightLogical(lhs, v.ir.Imm32(16))}; const IR::U32 result{v.ir.IAdd(lhs_2, op_c)};
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); v.X(iadd3.dest_reg, result);
if (iadd3.cc != 0) { if (iadd3.cc != 0) {
@ -98,6 +90,7 @@ void IADD3(TranslatorVisitor& v, u64 insn, IR::U32 op_b, IR::U32 op_c) {
v.SetZFlag(v.ir.GetZeroFromOp(result)); v.SetZFlag(v.ir.GetZeroFromOp(result));
v.SetSFlag(v.ir.GetSignFromOp(result)); v.SetSFlag(v.ir.GetSignFromOp(result));
v.SetCFlag(v.ir.GetCarryFromOp(result)); v.SetCFlag(v.ir.GetCarryFromOp(result));
const IR::U1 of_1{v.ir.ILessThan(lhs_1, op_a, false)};
v.SetOFlag(v.ir.LogicalOr(v.ir.GetOverflowFromOp(result), of_1)); v.SetOFlag(v.ir.LogicalOr(v.ir.GetOverflowFromOp(result), of_1));
} }
} }