JonChesterfield wrote:
We don't need a way to call the builtins. See for example this pull request.
Intel have done the spirv64-intel- thing similar to the spirv64-amd-amdhsa so
they can (presumably?) use whatever intrinsics they like, using another header
quite like this one.
https://github.
https://github.com/jhuber6 commented:
If all this does is call the `amdgpu` builtins, is it possible to just include
that one? I think the only thing that differs is the address spaces so we could
probably just undef those.
https://github.com/llvm/llvm-project/pull/131164
_
https://github.com/JonChesterfield updated
https://github.com/llvm/llvm-project/pull/131164
>From 402a091ac6eac8a50ce54a519acce5bfa4de1c88 Mon Sep 17 00:00:00 2001
From: Jon Chesterfield
Date: Tue, 18 Mar 2025 15:57:02 +
Subject: [PATCH] [Headers] Implement spirvamdgcnintrin.h
---
clang/l
sarnex wrote:
> @sarnex I'm assuming you're somewhat familiar with SPIR-V and the backend. We
> really need a way to call SPIR-V builtins directly, i.e. some way to get
> clang to lower something like __builtin_spirv_ballot() to
> OpGroupNonUniformBallot. I don't know how much SPIR-V exposes f
jhuber6 wrote:
@sarnex I'm assuming you're somewhat familiar with SPIR-V and the backend. We
really need a way to call SPIR-V builtins directly, i.e. some way to get clang
to lower something like `__builtin_spirv_ballot()` to
`OpGroupNonUniformBallot`. I don't know how much SPIR-V exposes for
sarnex wrote:
No problem, as long as we have a somewhat reasonable way to eventually get the
DeviceRTL working I'm happy, thanks for working on this.
https://github.com/llvm/llvm-project/pull/131164
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https://github.com/JonChesterfield edited
https://github.com/llvm/llvm-project/pull/131164
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JonChesterfield wrote:
@sarnex I'm deeply sorry about this sequence of events. The single spirv64
header that lowered to intrinsics that amdgpu or intel map onto their own world
would have removed a swathe of spurious variation.
What we're going to have to do in the interim is have spirvamdgcn
https://github.com/JonChesterfield edited
https://github.com/llvm/llvm-project/pull/131164
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