llvm-project/flang/include
Valentin Clement e7361469bb
[fir] Add fir.array_amend operation definition
This patch adds the fir.array_amend operation. this op
is used later in upstreaming patches for the F95 compliance.

The `array_amend` operation marks an array value as having been changed via
a reference obtain by an `array_access`. It acts as a logical transaction
log that is used to merge the final result back with an `array_merge_store`
operation.

 ```mlir
  // fetch the value of one of the array value's elements
  %1 = fir.array_access %v, %i, %j : (!fir.array<?x?xT>, index, index) -> !fir.ref<T>
  // modify the element by storing data using %1 as a reference
  %2 = ... %1 ...
  // mark the array value
  %new_v = fir.array_amend %v, %2 : (!fir.array<?x?xT>, !fir.ref<T>) -> !fir.array<?x?xT>
```

This patch is part of the upstreaming effort from fir-dev branch.

Reviewed By: kiranchandramohan, schweitz

Differential Revision: https://reviews.llvm.org/D112448

Co-authored-by: Eric Schweitz <eschweitz@nvidia.com>
2022-02-03 15:04:35 +01:00
..
flang [fir] Add fir.array_amend operation definition 2022-02-03 15:04:35 +01:00
CMakeLists.txt [flang] A rework of the cmake build components for in and out of tree builds. 2020-03-26 18:17:04 +00:00