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[flang] Address TODO from previous changes to IsSaved()

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An earlier fix to evaluate::IsSaved() needed to preserve its
treatment of named constants in modules and main programs -- i.e.
they would appear to be saved -- until a correction was added
to the lowering code.  This TODO can now be resolved.

Differential Revision: https://reviews.llvm.org/D114756
This commit is contained in:
Peter Klausler 2021-11-26 12:40:11 -08:00
parent c0b33a65f2
commit 8bc593cbbb
1 changed files with 3 additions and 10 deletions
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13
flang/lib/Evaluate/tools.cpp
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@ -1207,10 +1207,8 @@ bool IsSaved(const Symbol &original) {
return false; // this is a component
} else if (symbol.attrs().test(Attr::SAVE)) {
return true; // explicit SAVE attribute
} else if (symbol.test(Symbol::Flag::InDataStmt)) {
return true;
} else if (IsDummy(symbol) || IsFunctionResult(symbol) ||
IsAutomatic(symbol)) {
IsAutomatic(symbol) || IsNamedConstant(symbol)) {
return false;
} else if (scopeKind == Scope::Kind::Module ||
(scopeKind == Scope::Kind::MainProgram &&
@ -1228,13 +1226,8 @@ bool IsSaved(const Symbol &original) {
// -fno-automatic/-save/-Msave option applies to objects in
// executable subprograms unless they are explicitly RECURSIVE.
return true;
} else if (IsNamedConstant(symbol)) {
// TODO: lowering needs named constants in modules to be static,
// so this test for a named constant has lower precedence for the
// time being; when lowering is corrected, this case should be
// moved up above module logic, since named constants don't really
// have implied SAVE attributes.
return false;
} else if (symbol.test(Symbol::Flag::InDataStmt)) {
return true;
} else if (const auto *object{symbol.detailsIf<ObjectEntityDetails>()};
object && object->init()) {
return true;