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Optimize const and/or sequences

This commit is contained in:
drmortalwombat 2022-04-10 12:28:39 +02:00
parent 546dbfc45a
commit c635ae8136
2 changed files with 60 additions and 0 deletions
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38
oscar64/InterCode.cpp
View File

@ -8859,6 +8859,44 @@ void InterCodeBasicBlock::PeepholeOptimization(void)
mInstructions[i + 0]->mSrc[0].mIntConst = ~((1LL << shift) - 1);
changed = true;
}
#if 1
else if (
mInstructions[i + 0]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 0]->mOperator == IA_OR && mInstructions[i + 0]->mSrc[0].mTemp < 0 &&
mInstructions[i + 1]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 1]->mOperator == IA_AND && mInstructions[i + 1]->mSrc[0].mTemp < 0 &&
mInstructions[i + 1]->mSrc[1].mTemp == mInstructions[i + 0]->mDst.mTemp && mInstructions[i + 1]->mSrc[1].mFinal)
{
int64 ior = mInstructions[i + 0]->mSrc[0].mIntConst & mInstructions[i + 1]->mSrc[0].mIntConst;
int64 iand = mInstructions[i + 1]->mSrc[0].mIntConst;
mInstructions[i + 0]->mOperator = IA_AND;
mInstructions[i + 0]->mSrc[0].mIntConst = iand;
mInstructions[i + 1]->mOperator = IA_OR;
mInstructions[i + 1]->mSrc[0].mIntConst = ior;
changed = true;
}
#endif
#if 1
else if (
mInstructions[i + 0]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 0]->mOperator == IA_AND && mInstructions[i + 0]->mSrc[0].mTemp < 0 &&
mInstructions[i + 1]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 1]->mOperator == IA_AND && mInstructions[i + 1]->mSrc[0].mTemp < 0 &&
mInstructions[i + 1]->mSrc[1].mTemp == mInstructions[i + 0]->mDst.mTemp && mInstructions[i + 1]->mSrc[1].mFinal)
{
mInstructions[i + 0]->mSrc[0].mIntConst &= mInstructions[i + 1]->mSrc[0].mIntConst;
mInstructions[i + 0]->mDst = mInstructions[i + 1]->mDst;
mInstructions[i + 1]->mCode = IC_NONE;
changed = true;
}
else if (
mInstructions[i + 0]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 0]->mOperator == IA_OR && mInstructions[i + 0]->mSrc[0].mTemp < 0 &&
mInstructions[i + 1]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 1]->mOperator == IA_OR && mInstructions[i + 1]->mSrc[0].mTemp < 0 &&
mInstructions[i + 1]->mSrc[1].mTemp == mInstructions[i + 0]->mDst.mTemp && mInstructions[i + 1]->mSrc[1].mFinal)
{
mInstructions[i + 0]->mSrc[0].mIntConst |= mInstructions[i + 1]->mSrc[0].mIntConst;
mInstructions[i + 0]->mDst = mInstructions[i + 1]->mDst;
mInstructions[i + 1]->mCode = IC_NONE;
changed = true;
}
#endif
#if 1
else if (
mInstructions[i + 0]->mCode == IC_BINARY_OPERATOR && mInstructions[i + 0]->mOperator == IA_SHR && mInstructions[i + 0]->mSrc[0].mTemp < 0 &&

22
oscar64/Parser.cpp
View File

@ -3434,6 +3434,28 @@ void Parser::ParsePragma(void)
ConsumeToken(TK_CLOSE_PARENTHESIS);
}
else if (!strcmp(mScanner->mTokenIdent->mString, "bss"))
{
mScanner->NextToken();
ConsumeToken(TK_OPEN_PARENTHESIS);
if (mScanner->mToken == TK_IDENT)
{
const Ident* sectionIdent = mScanner->mTokenIdent;
mScanner->NextToken();
LinkerSection* lsec = mCompilationUnits->mLinker->FindSection(sectionIdent);
if (lsec)
{
mBSSection = lsec;
}
else
mErrors->Error(mScanner->mLocation, EERR_PRAGMA_PARAMETER, "Section not defined");
}
else
mErrors->Error(mScanner->mLocation, EERR_PRAGMA_PARAMETER, "Section name expected");
ConsumeToken(TK_CLOSE_PARENTHESIS);
}
else if (!strcmp(mScanner->mTokenIdent->mString, "align"))
{
mScanner->NextToken();