static void AliasesOneBlock(BLOCK *b)
{
QUAD *head = b->head;
while (head != b->tail->fwd)
{
switch(head->dc.opcode)
{
case i_assnblock:
HandleAssnBlock(head);
break;
case i_parmblock:
HandleParmBlock(head);
break;
case i_parm:
HandleParm(head);
break;
case i_phi:
HandlePhi(head);
break;
case i_assn:
HandleAssn(head);
break;
case i_add:
case i_sub:
HandleAdd(head);
break;
default:
break;
}
head = head->fwd;
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Operand* Peephole::Simplify(Instruction* instr) {
// Set the insertion point for new instructions; all new instructions
// after the current one, in the order they are created.
irGen_.SetInsertionPoint(instr);
switch(instr->GetOpcode()) {
case Instr_Add: {
return PreserveUSO(instr, HandleAdd(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock()));
}
case Instr_Sub: {
return PreserveUSO(instr, HandleSub(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock()));
}
case Instr_Mul: {
return PreserveUSO(instr, HandleMul(instr->GetSourceOp(0),
instr->GetSourceOp(1), instr->ParentBlock()));
}
case Instr_Div: {
auto arithInstr = instr->As<ArithmeticInstr>();
return PreserveUSO(instr, HandleDiv(arithInstr->LeftOp(),
arithInstr->RightOp(),
instr->ParentBlock(),
arithInstr->HasNoRemainder()));
}
case Instr_Udiv: {
return PreserveUSO(instr, HandleUdiv(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock()));
}
case Instr_Mod: {
return PreserveUSO(instr, HandleMod(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock()));
}
case Instr_Umod: {
return PreserveUSO(instr, HandleUmod(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock()));
}
case Instr_Fadd: {
auto arithInstr = instr->As<ArithmeticInstr>();
return HandleFadd(arithInstr->LeftOp(),
arithInstr->RightOp(),
arithInstr->GetFPMode());
}
case Instr_Fsub: {
auto arithInstr = instr->As<ArithmeticInstr>();
return HandleFsub(arithInstr->LeftOp(),
arithInstr->RightOp(),
arithInstr->GetFPMode());
}
case Instr_Fmul: {
auto arithInstr = instr->As<ArithmeticInstr>();
return HandleFmul(arithInstr->LeftOp(),
arithInstr->RightOp(),
arithInstr->GetFPMode());
}
case Instr_Fdiv: {
auto arithInstr = instr->As<ArithmeticInstr>();
return HandleFdiv(arithInstr->LeftOp(),
arithInstr->RightOp(),
arithInstr->GetFPMode());
}
case Instr_And: return HandleAnd(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock());
case Instr_Or: return HandleOr(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock());
case Instr_Xor: return HandleXor(instr->GetSourceOp(0),
instr->GetSourceOp(1),
instr->ParentBlock());
case Instr_Shl: return HandleShl(instr->As<ShlInstr>());
case Instr_Shr: return HandleShr(instr->As<ShrInstr>());
case Instr_Ushr: return HandleUshr(instr->As<UshrInstr>());
case Instr_Cmp: return HandleCmp(instr->As<CmpInstr>());
case Instr_Ucmp: return HandleUcmp(instr->As<UcmpInstr>());
case Instr_Fcmp: return HandleFcmp(instr->As<FcmpInstr>());
case Instr_Trunc: return HandleTrunc(instr->As<TruncInstr>());
case Instr_Sext: return HandleSext(instr->As<SextInstr>());
case Instr_Zext: return HandleZext(instr->As<ZextInstr>());
case Instr_Ftrunc: return HandleFtrunc(instr->As<FtruncInstr>());
case Instr_Fext: return HandleFext(instr->As<FextInstr>());
case Instr_Ftoi: return HandleFtoi(instr->As<FtoiInstr>());
case Instr_Ftoui: return HandleFtoui(instr->As<FtouiInstr>());
case Instr_Itof: return HandleItof(instr->As<ItofInstr>());
case Instr_Itop: return HandleItop(instr->As<ItopInstr>());
case Instr_Ptoi: return HandlePtoi(instr->As<PtoiInstr>());
case Instr_Ptop: return HandlePtop(instr->As<PtopInstr>());
case Instr_Uitof: return HandleUitof(instr->As<UitofInstr>());
case Instr_Call: return HandleCall(instr->As<CallInstr>());
case Instr_Address: return HandleAddress(instr->As<AddressInstr>());
case Instr_Index: return HandleIndex(instr->As<IndexInstr>());
case Instr_Element: return HandleElement(instr->As<ElementInstr>());
case Instr_Load: return HandleLoad(instr->As<LoadInstr>());
case Instr_Store: return HandleStore(instr->As<StoreInstr>());
case Instr_Question: return HandleQuestion(instr->As<QuestionInstr>());
case Instr_Phi: return HandlePhi(instr->As<PhiInstr>());
}
// This is an instruction that is not supported.
return nullptr;
}
