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SignedConstIntNeg values are encoded relative to a base value

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georgemoralis 2026-03-16 23:27:24 +02:00
parent 221629b8b5
commit ff40a9240f
1 changed files with 4 additions and 2 deletions
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6
src/shader_recompiler/frontend/translate/vector_alu.cpp
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@ -1160,7 +1160,8 @@ void Translator::V_CMP_U64(ConditionOp op, bool is_signed, bool set_exec, const
case OperandField::SignedConstIntPos: case OperandField::SignedConstIntPos:
return ir.Imm64(static_cast<u64>(inst.src[0].code)); return ir.Imm64(static_cast<u64>(inst.src[0].code));
case OperandField::SignedConstIntNeg: case OperandField::SignedConstIntNeg:
return ir.Imm64(static_cast<u64>(-s32(inst.src[0].code))); s32 decoded_value = -s32(inst.src[0].code) + SignedConstIntNegMin - 1;
return ir.Imm64(static_cast<u64>(decoded_value));
default: default:
UNREACHABLE_MSG("src0 = {}", u32(inst.src[0].field)); UNREACHABLE_MSG("src0 = {}", u32(inst.src[0].field));
} }
@ -1189,7 +1190,8 @@ void Translator::V_CMP_U64(ConditionOp op, bool is_signed, bool set_exec, const
case OperandField::SignedConstIntPos: case OperandField::SignedConstIntPos:
return ir.Imm64(static_cast<u64>(inst.src[1].code)); return ir.Imm64(static_cast<u64>(inst.src[1].code));
case OperandField::SignedConstIntNeg: case OperandField::SignedConstIntNeg:
return ir.Imm64(static_cast<u64>(-s32(inst.src[1].code))); s32 decoded_value = -s32(inst.src[0].code) + SignedConstIntNegMin - 1;
return ir.Imm64(static_cast<u64>(decoded_value));
default: default:
UNREACHABLE_MSG("Unsupported src[1] operand field: {}", u32(inst.src[1].field)); UNREACHABLE_MSG("Unsupported src[1] operand field: {}", u32(inst.src[1].field));
} }