llvm-project.git/flang/lib/Lower/ConvertExpr.cpp, branch main

[flang] Adding lowering of TEAMs features to PRIF in MIF Dialect (#165573)

2025-11-12T08:40:04+00:00

Support for multi-image features has begun to be integrated into LLVM
with the MIF dialect.
In this PR, you will find lowering and operations related to the TEAM
features (`SYNC TEAM`, `GET_TEAM`, `FORM TEAM`, `CHANGE TEAM`,
`TEAM_NUMBER`).

Note regarding the operation for `CHANGE TEAM` : This operation is
partial because it does not support the associated list of coarrays
because the allocation of a coarray and the lowering of PRIF's
`prif_alias_{create|destroy}` procedures are not yet supported in Flang.
This will be integrated later.

Any feedback is welcome.

[flang] Replace LLVM_ATTRIBUTE_UNUSED with [[maybe_unused]] (NFC) (#163916)

2025-10-17T14:27:28+00:00

This patch replaces LLVM_ATTRIBUTE_UNUSED with [[maybe_unused]],
introduced as part of C++17.

[flang] Consolidate copy-in/copy-out determination in evaluate framework (#151408)

2025-08-26T22:40:13+00:00

New implementation of `MayNeedCopy()` is used to consolidate
copy-in/copy-out checks.

`IsAssumedShape()` and `IsAssumedRank()` were simplified and are both
now in `Fortran::semantics` workspace.

`preparePresentUserCallActualArgument()` in lowering was modified to use
`MayNeedCopyInOut()`

Fixes https://github.com/llvm/llvm-project/issues/138471

[flang][NFC] Update more FIR op creation to the new APIs (#152060)

2025-08-05T00:53:44+00:00

[NFC] Fix `assignment` typo. (#151864)

2025-08-03T14:32:00+00:00

[mlir][NFC] update `flang/Lower` create APIs (8/n) (#149912)

2025-07-21T23:54:29+00:00

See https://github.com/llvm/llvm-project/pull/147168 for more info.

[flang] Migrate away from ArrayRef(std::nullopt_t) (#149454)

2025-07-18T15:05:12+00:00

ArrayRef(std::nullopt_t) has been deprecated.  This patch replaces
std::nullopt with mlir::TypeRange{} or mlir::ValueRange{} as
appropriate.

[flang] Migrate away from ArrayRef(std::nullopt_t) (#149337)

2025-07-17T22:23:55+00:00

ArrayRef(std::nullopt_t) has been deprecated.  This patch replaces
std::nullopt with {}.

A subsequence patch will address those places where we need to replace
std::nullopt with mlir::TypeRange{} or mlir::ValueRange{}.

[flang] Add lowering of volatile references (#132486)

2025-04-30T15:46:33+00:00

[RFC on
discourse](https://discourse.llvm.org/t/rfc-volatile-representation-in-flang/85404/1)

Flang currently lacks support for volatile variables. For some cases,
the compiler produces TODO error messages and others are ignored. Some
of our tests are like the example from _C.4 Clause 8 notes: The VOLATILE
attribute (8.5.20)_ and require volatile variables.

Prior commits:
```
c9ec1bc753b0 [flang] Handle volatility in lowering and codegen (#135311)
e42f8609858f [flang][nfc] Support volatility in Fir ops (#134858)
b2711e1526f9 [flang][nfc] Support volatile on ref, box, and class types (#134386)
```

[flang][nfc] Initial changes needed to use llvm intrinsics instead of regular calls (#134170)

2025-04-03T15:37:40+00:00

Flang uses `fir.call ` in a few places. This means
consumers of the IR need to strcmp every fir.call if they want to find a
particular LLVM intrinsic.
Emit LLVM memcpy intrinsics instead.