[Mlir-commits] [flang] [mlir] [Flang][mlir] - Translation of delayed privatization for deferred target-tasks (PR #155348)
Pranav Bhandarkar
llvmlistbot at llvm.org
Fri Sep 12 08:54:53 PDT 2025
================
@@ -73,4 +73,16 @@ def DIScopeForLLVMFuncOpPass : Pass<"ensure-debug-info-scope-on-llvm-func", "::m
];
}
+def PrepareForOMPOffloadPrivatizationPass : Pass<"omp-offload-privatization-prepare", "::mlir::LLVM::LLVMFuncOp"> {
+ let summary = "Prepare OpenMP maps for privatization for deferred target tasks";
+ let description = [{
+ When generating LLVMIR for privatized variables in an OpenMP offloading directive (eg. omp::TargetOp)
+ that creates a deferred target task (when the nowait clause is used), we need to copy the privatized
+ variable out of the stack of the generating task and into the heap so that the deferred target task
+ can still access it. However, if such a privatized variable is also mapped, typically the case for
+ allocatables, then the corresponding `omp::MapInfoOp` needs to be fixed up to map the new heap-allocated
+ variable and not the original variable.
+ }];
+ let dependentDialects = ["LLVM::LLVMDialect", "mlir::omp::OpenMPDialect"];
----------------
bhandarkar-pranav wrote:
@joker-eph - Thank you for looking this over. I get it now, unless a pass creates Ops from a dialect, it shouldn't list the dialect in `dependentDialects`
https://github.com/llvm/llvm-project/pull/155348
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