| Issue | 124802 |
|---|---|
| Summary | [AMDGPU] Review intrinsic flags for `int_amdgcn_s_sendmsg` |
| Labels | new issue |
| Assignees | |
| Reporter | raiseirql |
This intrinsic and others in the immediate area are not setting the `IntrNoCallback` flag. Not having this intrinsic prevents `PostOrderFunctionAttrsPass` from marking a function that uses the intrinsic from having the `norecurse` flag applied. Ultimately, that then causes the `amdhsa_uses_dynamic_stack` flag to be set for the kernel.
The use case for this is in our implementation of `print()` for Mojo that uses the intrinsic to build a native `hostcall()` implementation. Fixing the intrinsic to have this flag set fixes the problem locally. Other intrinsics such as `int_amdgcn_s_sleep` do not have the same problem because they derive from `DefaultAttrsIntrinsic`. Other options are likely available in our LLVM pipeline config, but fixing the intrinsic so far has been the easiest path. cc: @arsenm
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