Sameer Sahasrabuddhe b02b395a1e [AMDGPU] Asynchronous loads from global/buffer to LDS on pre-GFX12 (#180466) ...

The existing "LDS DMA" builtins/intrinsics copy data from global/buffer
pointer to LDS. These are now augmented with their ".async" version,
where the compiler does not automatically track completion. The
completion is now tracked using explicit mark/wait intrinsics, which
must be inserted by the user. This makes it possible to write programs
with efficient waits in software pipeline loops. The program can now
wait for only the oldest outstanding operations to finish, while
launching more operations for later use.

This change only contains the new names of the builtins/intrinsics,
which continue to behave exactly like their non-async counterparts. A
later change will implement the actual mark/wait semantics in
SIInsertWaitcnts.

This is part of a stack split out from #173259:
- #180467
- #180466

Fixes: SWDEV-521121

2026-02-11 05:26:58 +00:00

6.3 KiB

Raw Permalink Blame History

View Raw