[all-commits] [llvm/llvm-project] 3633de: [mlir][acc] Handle OpenACC host_data in LegalizeDa...

[nvptm via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 3633de702985e1580d72223ae38a31d0e6fd480b
      https://github.com/llvm/llvm-project/commit/3633de702985e1580d72223ae38a31d0e6fd480b
  Author: nvptm <pmathew at nvidia.com>
  Date:   2025-04-14 (Mon, 14 Apr 2025)

  Changed paths:
    M mlir/include/mlir/Dialect/OpenACC/OpenACC.h
    M mlir/lib/Dialect/OpenACC/Transforms/LegalizeDataValues.cpp
    M mlir/test/Dialect/OpenACC/legalize-data.mlir

  Log Message:
  -----------
  [mlir][acc] Handle OpenACC host_data in LegalizeDataValues (#134767)

`LegalizeDataValuesInRegion` is intended to replace the SSA values used
in a region with the output of data operations, but misses the handling
of the OpenACC `host_data` construct. As a result, currently

```
 !$acc host_data use_device(%var)
   ...%var...
 !$acc end host_data

```
is lowered to

```
 %dev_var = acc.use_device(%var)
 acc.host_data data_operands(%dev_var) {
   ...%var...
 }
```

This pull request updates the LegalizeDataValuesInRegion to handle
HostDataOp such that lowering results in

```
 %dev_var = acc.use_device(%var)
 acc.host_data data_operands(%dev_var) {
   ...%dev_var...
 }
```



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