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Merge pull request #3577 from ReinUsesLisp/lea

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shader/lea: Fix LEA implementation
This commit is contained in:
Fernando Sahmkow 2020-03-31 14:36:07 -04:00 committed by GitHub
commit 5b95a01463
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 4 additions and 11 deletions
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15
src/video_core/shader/decode/arithmetic_integer.cpp
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@ -235,34 +235,30 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) {
case OpCode::Id::LEA_IMM:
case OpCode::Id::LEA_RZ:
case OpCode::Id::LEA_HI: {
const auto [op_a, op_b, op_c] = [&]() -> std::tuple<Node, Node, Node> {
auto [op_a, op_b, op_c] = [&]() -> std::tuple<Node, Node, Node> {
switch (opcode->get().GetId()) {
case OpCode::Id::LEA_R2: {
return {GetRegister(instr.gpr20), GetRegister(instr.gpr39),
Immediate(static_cast<u32>(instr.lea.r2.entry_a))};
}
case OpCode::Id::LEA_R1: {
const bool neg = instr.lea.r1.neg != 0;
return {GetOperandAbsNegInteger(GetRegister(instr.gpr8), false, neg, true),
GetRegister(instr.gpr20),
Immediate(static_cast<u32>(instr.lea.r1.entry_a))};
}
case OpCode::Id::LEA_IMM: {
const bool neg = instr.lea.imm.neg != 0;
return {Immediate(static_cast<u32>(instr.lea.imm.entry_a)),
GetOperandAbsNegInteger(GetRegister(instr.gpr8), false, neg, true),
Immediate(static_cast<u32>(instr.lea.imm.entry_b))};
}
case OpCode::Id::LEA_RZ: {
const bool neg = instr.lea.rz.neg != 0;
return {GetConstBuffer(instr.lea.rz.cb_index, instr.lea.rz.cb_offset),
GetOperandAbsNegInteger(GetRegister(instr.gpr8), false, neg, true),
Immediate(static_cast<u32>(instr.lea.rz.entry_a))};
}
case OpCode::Id::LEA_HI:
default:
UNIMPLEMENTED_MSG("Unhandled LEA subinstruction: {}", opcode->get().GetName());
@ -275,12 +271,9 @@ u32 ShaderIR::DecodeArithmeticInteger(NodeBlock& bb, u32 pc) {
UNIMPLEMENTED_IF_MSG(instr.lea.pred48 != static_cast<u64>(Pred::UnusedIndex),
"Unhandled LEA Predicate");
const Node shifted_c =
Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, Immediate(1), op_c);
const Node mul_bc = Operation(OperationCode::IMul, NO_PRECISE, op_b, shifted_c);
const Node value = Operation(OperationCode::IAdd, NO_PRECISE, op_a, mul_bc);
SetRegister(bb, instr.gpr0, value);
Node value = Operation(OperationCode::ILogicalShiftLeft, std::move(op_a), std::move(op_c));
value = Operation(OperationCode::IAdd, std::move(op_b), std::move(value));
SetRegister(bb, instr.gpr0, std::move(value));
break;
}