================ @@ -0,0 +1,501 @@ +//===- LowerGPUIntrinsic.cpp ----------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// Lower the llvm.gpu intrinsics to target specific code sequences. +// Can be called from clang if building for a specific GPU or from the backend +// as part of a SPIRV lowering pipeline. Initial pass can lower to amdgcn or ---------------- MrSidims wrote:
> I'd like lowering for intel too but that will need to be out of tree until > intel comes in tree. To clarify: while me and Michal are working for Intel, our concerns are not about lowering to some Intel's internal stuff, but about lowering to SPIR-V, which is supported as intermediate representation for Vulkan, OpenCL etc by multiple vendors. I can't speak for others, but (judging by amount of PRs I've been looking in LLVM's SPIR-V backend) apart of Intel at least Google has interest in developing SPIR-V backend. So let me actually invite @sudonatalie and @Keenuts to the discussion. > which passes llvm intrinsics through unchanged, and ends up creating amdgcn-- > LLVM IR to feed back into the backend I assume it only works, when the frontend and the backend are built on top of the same LLVM version, right? Otherwise you would face an issues like: a. intrinsics semantics can change depending on LLVM version; b. rules of intrinsics' name can change from version to version (for example LLVM's switch from typed to untyped pointers has affected the names). So talking about SPIR-V toolchains, as it's hard to know ahead of time, who will consume the generated SPIR-V - we must not have compiler generated external symbols (like intrinsics) in the module as the backend might not be able to resolve them. https://github.com/llvm/llvm-project/pull/131190 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
