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Propagate non aliasing initializers to compile time constants

This commit is contained in:
drmortalwombat 2025-05-13 20:48:12 +02:00
parent 52db653ec1
commit 2310416c46
1 changed files with 14 additions and 6 deletions
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20
oscar64/GlobalOptimizer.cpp
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@ -275,14 +275,22 @@ bool GlobalOptimizer::ReplaceGlobalConst(Expression* exp)
{ {
if (exp->mType == EX_VARIABLE && (exp->mDecValue->mFlags & (DTF_GLOBAL | DTF_STATIC)) && !(exp->mDecValue->mOptFlags & (OPTF_VAR_MODIFIED | OPTF_VAR_ADDRESS)) && exp->mDecValue->mValue) if (exp->mType == EX_VARIABLE && (exp->mDecValue->mFlags & (DTF_GLOBAL | DTF_STATIC)) && !(exp->mDecValue->mOptFlags & (OPTF_VAR_MODIFIED | OPTF_VAR_ADDRESS)) && exp->mDecValue->mValue)
{ {
Expression* cexp = exp->mDecValue->mValue; Expression* cexp = exp->mDecValue->mValue;
if (cexp->mType == EX_CONSTANT && if (cexp->mType == EX_CONSTANT)
(cexp->mDecValue->mType == DT_CONST_ADDRESS || cexp->mDecValue->mType == DT_CONST_INTEGER ||
cexp->mDecValue->mType == DT_CONST_POINTER || cexp->mDecValue->mType == DT_CONST_FLOAT))
{ {
exp->mType = EX_CONSTANT;
exp->mDecValue = cexp->mDecValue->ConstCast(exp->mDecType); if (cexp->mDecValue->mType == DT_CONST_ADDRESS || cexp->mDecValue->mType == DT_CONST_INTEGER ||
changed = true; cexp->mDecValue->mType == DT_CONST_POINTER || cexp->mDecValue->mType == DT_CONST_FLOAT)
{
exp->mType = EX_CONSTANT;
exp->mDecValue = cexp->mDecValue->ConstCast(exp->mDecType);
changed = true;
}
else if (exp->mDecValue->mBase->mType == DT_TYPE_STRUCT)
{
exp->mDecValue->mBase = exp->mDecValue->mBase->ToConstType();
}
} }
} }