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Fix inifinite pumping loop in integer range optimizer

This commit is contained in:
drmortalwombat 2023-10-30 18:02:34 +01:00
parent f808309058
commit 8a27cba1f9
3 changed files with 30 additions and 4 deletions
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12
oscar64/Declaration.cpp
View File

@ -526,6 +526,18 @@ Expression* Expression::ConstantFold(Errors * errors, LinkerSection * dataSectio
ex->mDecType = mDecType;
return ex;
}
else if (mType == EX_PREFIX && mToken == TK_BINARY_AND && mLeft->mType == EX_INDEX && mLeft->mLeft->mType == EX_VARIABLE && (mLeft->mLeft->mDecValue->mFlags & (DTF_STATIC | DTF_GLOBAL)) && mLeft->mRight->mType == EX_CONSTANT)
{
Expression* ex = new Expression(mLocation, EX_VARIABLE);
Declaration* dec = new Declaration(mLocation, DT_VARIABLE_REF);
dec->mFlags = mLeft->mLeft->mDecValue->mFlags;
dec->mBase = mLeft->mLeft->mDecValue;
dec->mSize = mLeft->mLeft->mDecType->mBase->mSize - int(mLeft->mRight->mDecValue->mInteger) * dec->mSize;
dec->mOffset = int(mLeft->mRight->mDecValue->mInteger) * dec->mSize;
ex->mDecValue = dec;
ex->mDecType = mLeft->mLeft->mDecType;
return ex;
}
else if (mType == EX_PREFIX && mToken == TK_BINARY_AND && mLeft->mType == EX_PREFIX && mLeft->mToken == TK_MUL)
{
return mLeft->mLeft;

7
oscar64/InterCode.cpp
View File

@ -17586,12 +17586,15 @@ void InterCodeProcedure::RebuildIntegerRangeSet(void)
ResetVisited();
mEntryBlock->RestartLocalIntegerRangeSets(mTemporaries.Size(), mLocalVars, mParamVars);
// No need to re-init the loop specific parts, we are restarting.
// Would lead to inifinte pumping weak - bound in some cases
#if 0
do {
DisassembleDebug("tr");
ResetVisited();
} while (mEntryBlock->BuildGlobalIntegerRangeSets(true, mLocalVars, mParamVars));
#endif
do {
DisassembleDebug("tr");
@ -18431,7 +18434,7 @@ void InterCodeProcedure::Close(void)
{
GrowingTypeArray tstack(IT_NONE);
CheckFunc = !strcmp(mIdent->mString, "fill");
CheckFunc = !strcmp(mIdent->mString, "getReady");
CheckCase = false;
mEntryBlock = mBlocks[0];

13
oscar64/InterCodeGenerator.cpp
View File

@ -712,6 +712,14 @@ void InterCodeGenerator::InitGlobalVariable(InterCodeModule * mod, Declaration*
DestructStack* destack = nullptr;
TranslateExpression(nullptr, mMainInitProc, mMainInitBlock, dec->mValue, destack, BranchTarget(), BranchTarget(), nullptr);
}
else if (dec->mValue->mType == EX_VARIABLE && dec->mValue->mDecType->mType == DT_TYPE_ARRAY && dec->mBase->mType == DT_TYPE_POINTER && dec->mBase->CanAssign(dec->mValue->mDecType))
{
Declaration* ndec = new Declaration(dec->mValue->mLocation, DT_CONST_POINTER);
ndec->mValue = dec->mValue;
ndec->mBase = dec->mValue->mDecType;
BuildInitializer(mod, d, 0, ndec, var);
}
else
mErrors->Error(dec->mLocation, EERR_CONSTANT_INITIALIZER, "Non constant initializer");
}
@ -2060,7 +2068,7 @@ InterCodeGenerator::ExValue InterCodeGenerator::TranslateExpression(Declaration*
block->Append(ins);
if (!(dec->mBase->mFlags & DTF_DEFINED))
mErrors->Error(dec->mLocation, EERR_VARIABLE_TYPE, "Undefined variable type");
mErrors->Error(dec->mLocation, EERR_VARIABLE_TYPE, "Undefined variable type for", dec->mQualIdent);
if (exp->mDecType->IsReference())
return ExValue(exp->mDecType->mBase, ins->mDst.mTemp, ref + 1);
@ -4517,6 +4525,9 @@ InterCodeGenerator::ExValue InterCodeGenerator::TranslateExpression(Declaration*
}
else
{
if (vr.mType->mType == DT_TYPE_ARRAY)
vr = Dereference(proc, exp, block, inlineMapper, vr, 1);
else
vr = Dereference(proc, exp, block, inlineMapper, vr);
ins->mCode = IC_TYPECAST;
ins->mSrc[0].mType = vr.mReference > 0 ? IT_POINTER : InterTypeOf(vr.mType);