6a6fabea58
Some games call LDG at the top of a basic block, making the tracking heuristic to fail. This commit lets the heuristic the decoded nodes as a whole instead of per basic blocks. This may lead to some false positives but allows it the heuristic to track cases it previously couldn't.
49 lines
No EOL
1.6 KiB
C++
49 lines
No EOL
1.6 KiB
C++
// Copyright 2018 yuzu Emulator Project
|
|
// Licensed under GPLv2 or any later version
|
|
// Refer to the license.txt file included.
|
|
|
|
#include "common/assert.h"
|
|
#include "common/common_types.h"
|
|
#include "video_core/engines/shader_bytecode.h"
|
|
#include "video_core/shader/shader_ir.h"
|
|
|
|
namespace VideoCommon::Shader {
|
|
|
|
using Tegra::Shader::Instruction;
|
|
using Tegra::Shader::OpCode;
|
|
|
|
u32 ShaderIR::DecodeBfe(BasicBlock& bb, u32 pc) {
|
|
const Instruction instr = {program_code[pc]};
|
|
const auto opcode = OpCode::Decode(instr);
|
|
|
|
UNIMPLEMENTED_IF(instr.bfe.negate_b);
|
|
|
|
Node op_a = GetRegister(instr.gpr8);
|
|
op_a = GetOperandAbsNegInteger(op_a, false, instr.bfe.negate_a, false);
|
|
|
|
switch (opcode->get().GetId()) {
|
|
case OpCode::Id::BFE_IMM: {
|
|
UNIMPLEMENTED_IF_MSG(instr.generates_cc,
|
|
"Condition codes generation in BFE is not implemented");
|
|
|
|
const Node inner_shift_imm = Immediate(static_cast<u32>(instr.bfe.GetLeftShiftValue()));
|
|
const Node outer_shift_imm =
|
|
Immediate(static_cast<u32>(instr.bfe.GetLeftShiftValue() + instr.bfe.shift_position));
|
|
|
|
const Node inner_shift =
|
|
Operation(OperationCode::ILogicalShiftLeft, NO_PRECISE, op_a, inner_shift_imm);
|
|
const Node outer_shift =
|
|
Operation(OperationCode::ILogicalShiftRight, NO_PRECISE, inner_shift, outer_shift_imm);
|
|
|
|
SetInternalFlagsFromInteger(bb, outer_shift, instr.generates_cc);
|
|
SetRegister(bb, instr.gpr0, outer_shift);
|
|
break;
|
|
}
|
|
default:
|
|
UNIMPLEMENTED_MSG("Unhandled BFE instruction: {}", opcode->get().GetName());
|
|
}
|
|
|
|
return pc;
|
|
}
|
|
|
|
} // namespace VideoCommon::Shader
|