51 lines
1.3 KiB
Java
Executable File
51 lines
1.3 KiB
Java
Executable File
package midend.llvm.instr;
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import backend.mips.MipsBuilder;
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import backend.mips.Register;
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import backend.mips.instr.MipsAlu;
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import backend.mips.instr.type.MipsAluType;
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import midend.llvm.type.IrType;
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import midend.llvm.value.IrValue;
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public class TruncInstr extends IrInstr {
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private IrType targetType;
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public TruncInstr(IrType targetType, IrValue value, String name) {
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super(targetType, name, IrInstrType.TRUNC);
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addUse(value);
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this.targetType = targetType;
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}
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public IrValue getSrc() {
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return getUse(0);
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}
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public IrType getTargetType() {
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return targetType;
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}
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public IrType getSrcType() {
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return getSrc().getType();
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}
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public String toString() {
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return getName() + " = trunc " + getSrcType()
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+ " " + getSrc().getName() + " to " + getTargetType();
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}
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public void toMips() {
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Register reg = MipsBuilder.getRegister(getSrc());
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if (reg == null) {
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reg = Register.K0;
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}
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loadValueToReg(getSrc(), reg);
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if (this.targetType.isInt8()) {
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new MipsAlu(MipsAluType.ANDI, reg, reg, 0xFF);
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} else if (this.targetType.isBool()) {
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new MipsAlu(MipsAluType.ANDI, reg, reg, 0x1);
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}
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saveResult(this, reg);
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}
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}
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