Intel Compiler Engineer Shares Latest Project Gains For APX

At the GNU Tools Cauldron 2026 conference in Prague, Intel's Hongtao Liu presented updates on APX (Advanced Performance Extensions) compiler enablement, confirming GCC 15.1 (with Binutils 2.44+, Glibc 2.39+, Linux 6.16+) and LLVM 20.1+ have good support. SPEC CPU 2017 simulations project over 10% fewer loads, over 20% fewer stores, and over 10% fewer instructions with APX. AMD engineers also presented on their competing ACE V1 extensions, targeting GCC 17.1. Real-world APX performance will be measurable once Diamond Rapids and Nova Lake processors ship.

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