The LLVM 18.1 release has seen new support for Intel's next-gen Panther Lake client & Clearwater Forest server CPUs.
Intel's 2025 Client & Server CPU Lineup Receives Early Support In LLVM 18.1 - Panther Lake & Clearwater Forest
In 2025, Intel aims to release a range of new chips for both client and server segments while ramping up the production of its late 2024 Arrow Lake and Lunar Lake lineups. Some of Intel's biggest launches next year will be the Panther Lake "Core" and Clearwater Forest "Xeon" CPUs.
Phoronix reports that the latest release of LLVM 18.1 has added these next-gen chips within the support list. In addition to the CPUs, the new release also adds support for AVX10.1-256 & AVX10.1-512 instruction set architecture which paves the way for next-gen CPU architectures by team Blue. Some of the highlights of the release are mentioned below:
- ISA support for Intel AVX10.1-256 and AVX10.1-512.
- Intel Panther Lake and Clearwater Forest targets are now added with -march=pantherlake and -march=clearwaterforest.
- The "-mapxf" switch is now supported as part of the ongoing Intel Advanced Performance Extensions (APX) enablement.
- Various new RISC-V instructions are supported. The SiFive P670 target is also now supported.
- Support for Arm Cortex A520, A720, and X4 CPUs. The Arm Cortex-M52 CPU is also now supported.
- LLVM 18 on LoongArch now supports LSX 128-bit and LASX 256-bit SIMD with new intrinsics. LoongArch on LLVM also has initial support for auto vectorization and linker relaxation.
- Support for the Intel AVX10.1 ISA as well as Intel additions for USER_MSR.
- Intel Panther Lake and Clearwater Forest targets are now added with -march=pantherlake and -march=clearwaterforest.
- Intel OpenMP kernel language support.
- Quite a lot of bug fixes.
The Intel Panther Lake CPUs will follow the Arrow Lake CPUs for desktop and mobile platforms. These chips will be supported on the same LGA 1851 socket that debuts with Arrow Lake later this year and will utilize next-gen Cougar Cove P-Cores with optimized Skymont E-Cores. Intel has already teased the doubling of AI performance for Panther Lake chips over Lunar Lake. The chips are expected to be fabricated using the Intel 18A process node and incorporate next-gen iGPU cores (Celestial Xe3).
On the other hand, we have Clearwater Forest E-Core Xeon CPUs which will serve the server market and will incorporate Darkmont cores based on the 18A process node. These chips are positioned for launch in 2025 and will be replacing the Sierra Forest E-Core Xeons with up to 288 cores. Their target market is going to be the cloud and data center segment where they will compete against the likes of AMD's Zen 5C architecture which debuts with a variant of EPYC Turin in 2025. Intel will be talking more about its next-gen CPU architectures and family during Computex in June so stay tuned for more information.
Intel Desktop CPU Generations Comparison:
| Processor Family | Processor Architecture | Processor Process | Processors Cores (Max) | Platform Chipset | Platform Socket | Memory Support | TDPs | PCIe Support | Launch |
|---|---|---|---|---|---|---|---|---|---|
| Intel Coffee Lake | Coffee Lake | 14nm++ | 6/12 | 300-Series | LGA 1151 | DDR4 | 35-95W | PCIe 3.0 | 2017 |
| Intel Coffee Lake Refresh | Coffee Lake | 14nm++ | 8/16 | 300-Series | LGA 1151 | DDR4 | 35-95W | PCIe 3.0 | 2018 |
| Intel Comet Lake | Comet Lake | 14nm++ | 10/20 | 400-Series | LGA 1200 | DDR4 | 35-127W | PCIe 3.0 | 2020 |
| Intel Rocket Lake | Rocket Lake | 14nm++ | 10/20 | 500-Series | LGA 1200 | DDR4 | 35-125W | PCIe 4.0 | 2021 |
| Intel Alder Lake | Golden Cove (P-Core) Gracemont (E-Core) | Intel 7 | 16/24 | 600-Series | LGA 1700 | DDR5/DDR4 | 35-150W | PCIe 5.0 | 2021 |
| Intel Raptor Lake | Raptor Cove (P-Core) Gracemont (E-Core) | Intel 7 | 24/32 | 700-Series | LGA 1700 | DDR5/DDR4 | 35-150W | PCIe 5.0 | 2022 |
| Intel Raptor Lake Refresh | Raptor Cove (P-Core) Gracemont (E-Core) | Intel 7 | 24/32 | 700-Series | LGA 1700 | DDR5/DDR4 | 35-150W | PCIe 5.0 | 2023 |
| Intel Meteor Lake | Redwood Cove (P-Core) Crestmont (E-Core) | Intel 4 | 14/20 | 800-Series | LGA 1851 | DDR5 | 35-65W | PCIe 5.0 | 2024 (PS-Only) |
| Intel Bartlett Lake | Raptor Cove (P-Core) Gracemont (E-Core) | Intel 7 | TBD | 700-Series | LGA 1700 | DDR5/DDR4 | TBD | PCIe 5.0 | 2024 |
| Intel Arrow Lake | Cougar Cove (P-Core) Skymont (E-Core) | Intel 20A TSMC N3 | 24/24? | 800-Series | LGA 1851 | DDR5 | 35-125W | PCIe 5.0 | 2024 |
| Intel Panther Lake | Cougar Cove (P-Core) Skymont (E-Core) | Intel 18A | TBD | 900-Series | LGA 1851 | DDR5 | TBD | TBD | 2025 |
About the author: A Software Engineer by training and a PC enthusiast by passion, Hassan Mujtaba serves as Wccftech's Senior Editor for hardware section. With years of experience in the industry, he specializes in deep-dive technical analysis of next-generation CPU and GPU architectures, motherboards, and cooling solutions. His work involves not only breaking news on upcoming technologies but also extensive hands-on reviews and benchmarking.
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