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shader/arithmetic_integer: Fix edge case and mark IADD.X Rd.CC as unimplemented 

IADD.X Rd.CC requires some extra logic that is not currently
implemented. Abort when this is hit.
This commit is contained in:
ReinUsesLisp 2020-04-25 22:53:54 -03:00
parent 2a96bea6a7
commit e895a4e2d7
1 changed files with 6 additions and 1 deletions
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7
src/video_core/shader/decode/arithmetic_integer.cpp
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@ -35,7 +35,8 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) {
case OpCode::Id::IADD_C: case OpCode::Id::IADD_C:
case OpCode::Id::IADD_R: case OpCode::Id::IADD_R:
case OpCode::Id::IADD_IMM: { 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_a = GetOperandAbsNegInteger(op_a, false, instr.alu_integer.negate_a, true);
op_b = GetOperandAbsNegInteger(op_b, false, instr.alu_integer.negate_b, true); op_b = GetOperandAbsNegInteger(op_b, false, instr.alu_integer.negate_b, true);
@ -49,6 +50,10 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) {
} }
if (instr.generates_cc) { if (instr.generates_cc) {
// Avoid changing result's carry flag
SetTemporary(bb, 0, std::move(value));
value = GetTemporary(0);
const Node i0 = Immediate(0); const Node i0 = Immediate(0);
Node zero = Operation(OperationCode::LogicalIEqual, value, i0); Node zero = Operation(OperationCode::LogicalIEqual, value, i0);