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[Flang] Fix ASSIGN statement #149941

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Merged
ceseo merged 3 commits into from
Jul 23, 2025
Merged

[Flang] Fix ASSIGN statement #149941

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e468ec6
[Flang] Fix ASSIGN statement
ceseo Jul 21, 2025
04d5cd8
Fix formatting
ceseo Jul 21, 2025
2de6a3e
Added testcase
ceseo Jul 22, 2025
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28 changes: 26 additions & 2 deletions flang/lib/Lower/Bridge.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -5506,10 +5506,34 @@ class FirConverter : public Fortran::lower::AbstractConverter {
void genFIR(const Fortran::parser::AssignStmt &stmt) {
const Fortran::semantics::Symbol &symbol =
*std::get<Fortran::parser::Name>(stmt.t).symbol;

mlir::Location loc = toLocation();
mlir::Type symbolType = genType(symbol);
mlir::Value addr = getSymbolAddress(symbol);

// Handle the case where the assigned variable is declared as a pointer
if (auto eleTy = fir::dyn_cast_ptrOrBoxEleTy(symbolType)) {
if (auto ptrType = mlir::dyn_cast<fir::PointerType>(eleTy)) {
symbolType = ptrType.getEleTy();
} else {
symbolType = eleTy;
}
} else if (auto ptrType = mlir::dyn_cast<fir::PointerType>(symbolType)) {
symbolType = ptrType.getEleTy();
}

mlir::Value labelValue = builder->createIntegerConstant(
loc, genType(symbol), std::get<Fortran::parser::Label>(stmt.t));
builder->create<fir::StoreOp>(loc, labelValue, getSymbolAddress(symbol));
loc, symbolType, std::get<Fortran::parser::Label>(stmt.t));

// If the address points to a boxed pointer, we need to dereference it
if (auto refType = mlir::dyn_cast<fir::ReferenceType>(addr.getType())) {
if (auto boxType = mlir::dyn_cast<fir::BoxType>(refType.getEleTy())) {
mlir::Value boxValue = builder->create<fir::LoadOp>(loc, addr);
addr = builder->create<fir::BoxAddrOp>(loc, boxValue);
}
}

builder->create<fir::StoreOp>(loc, labelValue, addr);
}

void genFIR(const Fortran::parser::FormatStmt &) {
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