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GP-5240 Simplify late expressions where a SUBPIECE is taken of a PIECE

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This commit is contained in:
caheckman 2025-01-06 21:51:28 +00:00
parent acf5ac688a
commit 53d8d182e3
15 changed files with 215 additions and 88 deletions
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18
Ghidra/Features/Decompiler/src/decompile/cpp/variable.cc
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@ -303,19 +303,19 @@ void HighVariable::stripType(void) const
{
if (!type->hasStripped())
return;
if (type->getMetatype() == TYPE_PARTIALUNION) {
if (symbol != (Symbol *)0 && symboloffset != -1) {
type_metatype meta = symbol->getType()->getMetatype();
if (meta != TYPE_STRUCT && meta != TYPE_UNION) // If partial union does not have a bigger backing symbol
type = type->getStripped(); // strip the partial union
type_metatype meta = type->getMetatype();
if (meta == TYPE_PARTIALUNION || meta == TYPE_PARTIALSTRUCT) {
if (symbol != (Symbol *)0 && symboloffset != -1) { // If there is a bigger backing symbol
type_metatype submeta = symbol->getType()->getMetatype();
if (submeta == TYPE_STRUCT || submeta == TYPE_UNION)
return; // Don't strip the partial union
}
}
else if (type->isEnumType()) {
if (inst.size() != 1 || !inst[0]->isConstant()) // Only preserve partial enum on a constant
type = type->getStripped();
if (inst.size() == 1 && inst[0]->isConstant()) // Only preserve partial enum on a constant
return;
}
else
type = type->getStripped();
type = type->getStripped();
}
/// Only update if the cover is marked as \e dirty.