11 Commits

Author SHA1 Message Date
Juan Manuel MARTINEZ CAAMAÑO
fa2b1cb8c9 [NFC][AMDGPULowerKernelAttributes] Factorize repeated code into function
Differential Revision: https://reviews.llvm.org/D135266
2022-10-05 09:26:39 -05:00
Changpeng Fang
dee4bc4a4e AMDGPU: Handle new address pattern in LowerKernelAttributes introduced by opaque pointers
Summary:
  With opaque pointer support, the "ptr" type is introduced and thus BitCast is not necessary in some cases.
This work takes care of this change, and recognizes the new address patterns to do appropriate optimizations.

Reviewers:
  arsenm

Differential Revision:
  https://reviews.llvm.org/D134596
2022-09-26 09:31:52 -07:00
Changpeng Fang
3ae4c3589e AMDGPU: Implicit kernel arguments related optimization when uniform-workgroup-size=true
Summary:
   Under code object version 5, ockl_get_local_size returns the value computed by the expression:
workgroup_id < hidden_block_count ? hidden_group_size : hidden_remainder
For functions with the attribute uniform-work-group-size=true. we can evaluate workgroup_id < hidden_block_count
as true, and thus hidden_group_size is returned for ockl_get_local_size.
  With uniform-workgroup-size=true, this work also set all remainders to zero, and if there
is reqd_work_group_size, we also set work-group-size to the required value from the metadata.

Reviewers:
  arsenm and bcahoon

Differential Revision:
  https://reviews.llvm.org/D131276
2022-09-20 17:25:52 -07:00
Matt Arsenault
c986d476cd AMDGPU: Update reqd-work-group-size optimization for umin intrinsic
This code was pattern matching the ID computation expression as it
appears in the library. This was a compare and select, but now that
umin is canonical, we were no longer matching. Update to match the
intrinsic instead.
2022-04-12 20:03:02 -04:00
Stanislav Mekhanoshin
aff66b7eef [AMDGPU] Fix pass name of AMDGPULowerKernelAttributes. NFC.
This was obviously copy-pasted.
2021-07-06 15:03:31 -07:00
Serge Guelton
d6de1e1a71 Normalize interaction with boolean attributes
Such attributes can either be unset, or set to "true" or "false" (as string).
throughout the codebase, this led to inelegant checks ranging from

        if (Fn->getFnAttribute("no-jump-tables").getValueAsString() == "true")

to

        if (Fn->hasAttribute("no-jump-tables") && Fn->getFnAttribute("no-jump-tables").getValueAsString() == "true")

Introduce a getValueAsBool that normalize the check, with the following
behavior:

no attributes or attribute set to "false" => return false
attribute set to "true" => return true

Differential Revision: https://reviews.llvm.org/D99299
2021-04-17 08:17:33 +02:00
dfukalov
560d7e0411 [NFC][AMDGPU] Split AMDGPUSubtarget.h to R600 and GCN subtargets
... to reduce headers dependency.

Reviewed By: rampitec, arsenm

Differential Revision: https://reviews.llvm.org/D95036
2021-01-20 22:22:45 +03:00
dfukalov
6a87e9b08b [NFC][AMDGPU] Reduce include files dependency.
Reviewed By: rampitec

Differential Revision: https://reviews.llvm.org/D93813
2021-01-07 22:22:05 +03:00
Arthur Eubanks
7ecbe0c7a0 [NewPM][AMDGPU] Port amdgpu-lower-kernel-attributes
And add it to the AMDGPU opt pipeline.

This is a function pass instead of a module pass (like the legacy pass)
because it's getting added to a CGSCCPassManager, and you can't put a
module pass in a CGSCCPassManager.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D93885
2020-12-29 10:26:06 -08:00
Chandler Carruth
2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Matt Arsenault
372d796ab1 AMDGPU: Add pass to optimize reqd_work_group_size
Eliminate loads from the dispatch packet when they will have
a known value.

Also pattern match the code used by the library to handle partial
workgroup dispatches, which isn't necessary if reqd_work_group_size
is used.

llvm-svn: 332771
2018-05-18 21:35:00 +00:00