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ir_opt: Split off A32 specific passes

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MerryMage 2018-01-10 19:24:19 +00:00
parent 595f157e5e
commit 72a793f5b0
8 changed files with 95 additions and 60 deletions
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77
src/ir_opt/a32_constant_memory_reads_pass.cpp Normal file
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/* This file is part of the dynarmic project.
* Copyright (c) 2016 MerryMage
* This software may be used and distributed according to the terms of the GNU
* General Public License version 2 or any later version.
*/
#include <dynarmic/A32/callbacks.h>
#include "frontend/ir/basic_block.h"
#include "frontend/ir/opcodes.h"
#include "ir_opt/passes.h"
namespace Dynarmic {
namespace Optimization {
void A32ConstantMemoryReads(IR::Block& block, const A32::UserCallbacks::Memory& memory_callbacks) {
for (auto& inst : block) {
switch (inst.GetOpcode()) {
case IR::Opcode::A32SetCFlag: {
IR::Value arg = inst.GetArg(0);
if (!arg.IsImmediate() && arg.GetInst()->GetOpcode() == IR::Opcode::A32GetCFlag) {
inst.Invalidate();
}
break;
}
case IR::Opcode::A32ReadMemory8: {
if (!inst.AreAllArgsImmediates())
break;
u32 vaddr = inst.GetArg(0).GetU32();
if (memory_callbacks.IsReadOnlyMemory(vaddr)) {
u8 value_from_memory = memory_callbacks.Read8(vaddr);
inst.ReplaceUsesWith(IR::Value{value_from_memory});
}
break;
}
case IR::Opcode::A32ReadMemory16: {
if (!inst.AreAllArgsImmediates())
break;
u32 vaddr = inst.GetArg(0).GetU32();
if (memory_callbacks.IsReadOnlyMemory(vaddr)) {
u16 value_from_memory = memory_callbacks.Read16(vaddr);
inst.ReplaceUsesWith(IR::Value{value_from_memory});
}
break;
}
case IR::Opcode::A32ReadMemory32: {
if (!inst.AreAllArgsImmediates())
break;
u32 vaddr = inst.GetArg(0).GetU32();
if (memory_callbacks.IsReadOnlyMemory(vaddr)) {
u32 value_from_memory = memory_callbacks.Read32(vaddr);
inst.ReplaceUsesWith(IR::Value{value_from_memory});
}
break;
}
case IR::Opcode::A32ReadMemory64: {
if (!inst.AreAllArgsImmediates())
break;
u32 vaddr = inst.GetArg(0).GetU32();
if (memory_callbacks.IsReadOnlyMemory(vaddr)) {
u64 value_from_memory = memory_callbacks.Read64(vaddr);
inst.ReplaceUsesWith(IR::Value{value_from_memory});
}
break;
}
default:
break;
}
}
}
} // namespace Optimization
} // namespace Dynarmic