tree 71d6d8ee1907193e297a6912d0ec02fd63dcaa83
parent 092b6e73e651469527662443b592f98f442ece72
author agozillon <Andrew.Gozillon@amd.com> 1744643756 +0200
committer GitHub <noreply@github.com> 1744643756 +0200
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[Flang][OpenMP][MLIR] Check for presence of Box type before emitting store in MapInfoFinalization pass (#135477)

Currently we don't check for the presence of descriptor/BoxTypes before
emitting stores which lower to memcpys, the issue with this is that
users can have optional arguments, where they don't provide an input,
making the argument effectively null. This can still be mapped and this
causes issues at the moment as we'll emit a memcpy for function
arguments to store to a local variable for certain edge cases, when we
perform this memcpy on a null input, we cause a segfault at runtime.

The fix to this is to simply create a branch around the store that
checks if the data we're copying from is actually present. If it is, we
proceed with the store, if it isn't we skip it.