コード例 #1
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool PushPop2MovOptimization::optimize(AsmCode& code, int index){
	if(	prepare(code[index], code[index + 1]) && *cmd1 == cmdPUSH && *cmd2 == cmdPOP 
		&& !(cmd1->argument()->isMemory() && cmd2->argument()->isMemory())){
		AsmCmd* optCmd = new AsmCmd2(cmdMOV, cmd2->argument(), cmd1->argument());
		code.deleteRange(index, index + 1);
		code.insert(optCmd, index);	
		return true;
	} 
	return false;
}
コード例 #2
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool RegRegCMP2RegIntCmpOptimization::optimize(AsmCode& code, int index){
	if(	prepare(code[index], code[index + 1]) 
		&& *cmd1 == cmdMOV && cmd2 && *cmd2 == cmdCMP
		&& *cmd1->firstArg() == cmd2->secondArg()){
			AsmCmd2* optCmd = new AsmCmd2(cmdCMP, cmd2->firstArg(), cmd1->secondArg());
			code.deleteRange(index, index + 1);
			code.insert(optCmd, index);
			return true;
	} 
	return false;
}
コード例 #3
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool MovPush2PushOptimization::optimize(AsmCode& code, int index){
	if (prepare(code[index], code[index + 1]) 
		&& *cmd1 == cmdMOV && *cmd1->firstArg() == EAX
		&& *cmd2 == cmdPUSH && *cmd1->firstArg() == cmd2->argument()){
			AsmCmd1* optCmd = new AsmCmd1(cmdPUSH, cmd1->secondArg());
			code.deleteRange(index, index + 1);
			code.insert(optCmd, index);
			return true;
	}  
	return false;
}
コード例 #4
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool AddZero2MovOptimization::optimize(AsmCode& code, int index){
	if( prepare(code[index], code[index + 1], code[index + 2])
		&& *cmd1 == cmdMOV && *cmd2 == cmdMOV && *cmd3 == cmdADD 
		&& (*cmd1->secondArg() == 0 || *cmd2->secondArg() == 0)){
			AsmCmd2* optCmd = new AsmCmd2(cmdMOV, cmd3->firstArg(), *cmd1->secondArg() == 0 ? cmd2->secondArg() : cmd1->secondArg());
			code.deleteRange(index, index + 2);
			code.insert(optCmd, index);
			return true;
	} 
	return false;
}
コード例 #5
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool MovChainOptimization::optimize(AsmCode& code, int index){
	if (prepare(code[index], code[index + 1]) 
		&& *cmd1 == cmdMOV && *cmd1->firstArg() == EAX 
		&& *cmd2 == cmdMOV && *cmd2->secondArg() == cmd1->firstArg()
		&& !(cmd1->secondArg()->isMemory() && cmd2->firstArg()->isMemory()) ){
			AsmCmd* optCmd = new AsmCmd2(cmdMOV, cmd2->firstArg(), cmd1->secondArg());
			code.deleteRange(index, index + 1);
			code.insert(optCmd, index);
			return true;
	}
	return false;
}
コード例 #6
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool CompactAdditionOptimization::optimize(AsmCode& code, int index){
	if(	prepare(code[index], code[index + 1], code[index + 2])
		&& *cmd1 == cmdMOV && *cmd2 == cmdMOV && *cmd1->firstArg() == EBX 
		&& *cmd1->secondArg() == cmd2->firstArg() && *cmd3 == cmdADD 
		&& *cmd3->firstArg() == cmd2->firstArg() && *cmd3->secondArg() == cmd1->firstArg()){
			AsmCmd2* optCmd = new AsmCmd2(cmdMOV, makeArg(EBX), cmd2->secondArg());
			code.deleteRange(index, index + 1);
			code.insert(optCmd, index);
			return true;
	} 
	return false;
}
コード例 #7
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool Neg2MovOppositeOptimization::optimize(AsmCode& code, int index){
	if (prepare(code[index], code[index + 1]) 
		&& *cmd1 == cmdMOV && *cmd1->firstArg() == EAX
		&& *cmd2 == cmdNEG && *cmd2->argument() == EAX
		&& dynamic_cast<AsmImmediateArg*>(cmd1->secondArg())){
			int val = dynamic_cast<AsmImmediateArg*>(cmd1->secondArg())->value;
			AsmCmd2* optCmd = new AsmCmd2(cmdMOV, makeArg(EAX), makeArg(-val));
			code.deleteRange(index, index + 1);
			code.insert(optCmd, index);
			return true;
	}
	return false;
}
コード例 #8
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool MultIntByInt2MovOptimization::optimize(AsmCode& code, int index){
	if(	prepare(code[index], code[index + 1], code[index + 2])
		&& *cmd1 == cmdMOV && *cmd2 == cmdMOV
		&& *cmd1->firstArg() == EAX && *cmd2->firstArg() == EBX
		&& cmd1->secondArg()->isImmediate() && cmd2->secondArg()->isImmediate()
		&& *cmd3 == cmdIMUL){
			int val1 = dynamic_cast<AsmImmediateArg*>(cmd1->secondArg())->value,
				val2 = dynamic_cast<AsmImmediateArg*>(cmd2->secondArg())->value;
			AsmCmd2* optCmd = new AsmCmd2(cmdMOV, cmd3->firstArg(), makeArg(val1 * val2));
			code.deleteRange(index, index + 2);
			code.insert(optCmd, index);
			return true;
	}
	return false;
}
コード例 #9
0
ファイル: l_optimizer.cpp プロジェクト: Alex-ttt/C-Compoiler 
bool Mov2MemoryDirectlyOptimization::optimize(AsmCode& code, int index){
	AsmCmd2* cmd1 = dynamic_cast<AsmCmd2*>(code[index]);
	AsmCmd2* cmd2 = dynamic_cast<AsmCmd2*>(code[index + 1]);
	AsmCmd2* cmd3 = dynamic_cast<AsmCmd2*>(code[index + 2]);
	AsmCmd2* cmd4 = dynamic_cast<AsmCmd2*>(code[index + 3]);
	if (cmd1 && *cmd1->firstArg() == EAX && cmd1->secondArg()->isOffset()
		&& cmd2 && *cmd2->firstArg() == EBX && cmd2->secondArg()->isImmediate()
		&& cmd3 && cmd3->firstArg()->isMemory() && *cmd3->secondArg() == EBX
		&& cmd4 && *cmd4 == cmdMOV){
			cmd1->secondArg()->clearOffset();
			AsmCmd2* optCmd1 = new AsmCmd2(cmdMOV, cmd1->secondArg(), cmd2->secondArg());
			AsmCmd2* optCmd2 = new AsmCmd2(cmdMOV, cmd4->firstArg(), cmd2->secondArg());
			code.deleteRange(index, index + 3);
			code.insert(optCmd2, index);
			code.insert(optCmd1, index);
			return true;
	}	
	return false;
}