tree d03c50f85b2fb3ed4bf373403de02e664f295b92
parent 2b1a8e7679fe0c7a9fcd076eb1c16b9d76cfc24b
parent 1e1a6e34df092aea86bfd2dc4585b9748dbd8b14
author Ben Vanik <ben.vanik@gmail.com> 1730778916 -0800
committer GitHub <noreply@github.com> 1730778916 -0800
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Adding iree_hal_device_queue_update and improving queue DMA operations. (#19000)

As with all queue DMA operations it's best if things are batched into
command buffers but it's bad to have a command buffer with a single DMA
operation - this completes the set of fill/update/copy operations at the
queue level to match the command buffer DMA operations. Practically this
is useful when combined with reusable/indirect command buffers for
uploading new parameters in queue order prior to issuing a command
buffer that references them. The compiler will use this to turn push
constants into uniform buffers. An emulated version is added but
implementations are encouraged to do better... they currently don't.

While updating the queue API I've added placeholder flags to all DMA
operations in preparation for compiler updates that will provide them.
`iree_hal_device_queue_execute` has needed simplification for awhile and
that's done here to allow implementations to not need to worry with
batched command buffer juggling. The unused-since-its-inception
`iree_hal_command_buffer_discard_buffer` API has been renamed to
`iree_hal_command_buffer_advise_buffer` ahead of compiler changes that
will use it for multi-device cache management.

No breaking changes to the compiler here - future PRs will update the
HAL module and ops.