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e42e319313
Jay is a new SSA-based compiler for Intel GPUs. This is an early work-in-progress. It isn't ready to ship, but we'd like to move development in tree rather than rebasing the world every week. Please don't bother testing yet - we know the status and we're working on it! Jay's design is similar to other modern NIR backends, particularly ACO, NAK and AGX. It is fully SSA, deconstructing phis after RA. We use a Colombet register allocator similar to NAK, allowing us to handle Intel's complex register regioning restrictions in a straightforward way. Spilling logical registers is straightforward with Braun-Hack. Thanks to the SSA-based design, the entire backend is essentially linear time, regardless of register pressure, addressing brw's excessive compile time when especially spilling with brw. In this current early draft, we support a limited subset of all three APIs on Xe2. A lot works and a lot doesn't. The core compiler is there (spilling, scoreboarding, SIMD32, etc should more or less work), but there are details to fill in for both performance and correctness. We essentially pass conformance on OpenGL ES 3.0 and OpenCL 3.0, and we're busy iterating on Vulkan. Likewise, additional hardware support will come down the line. There's nothing fundamentally Xe2-specific here. I just have a Lunarlake laptop on my desk, Ken has a Battlemage card, and we had to pick _something_ as the first target. Co-authored-by: Kenneth Graunke <kenneth@whitecape.org> Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40835>
25 lines
658 B
C
25 lines
658 B
C
/*
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* Copyright 2026 Intel Corporation
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* SPDX-License-Identifier: MIT
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*/
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#pragma once
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#include "compiler/brw/brw_compiler.h"
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#include "util/shader_stats.h"
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#include "nir.h"
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struct intel_device_info;
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struct nir_shader_compiler_options;
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struct jay_shader_bin {
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const uint32_t *kernel;
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uint32_t size;
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struct genisa_stats stats;
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};
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struct jay_shader_bin *jay_compile(const struct intel_device_info *devinfo,
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void *mem_ctx,
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nir_shader *nir,
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union brw_any_prog_data *prog_data,
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union brw_any_prog_key *key);
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