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Cell phones have to handle telecommunications and audiovisual processing while maximizing battery life. Digital Signal Processors, or DSPs, use specialized hardware to offload these tasks from the CPU which lowers power usage. From an old Qualcomm presentation on Snapdragon 800, showing Hexagon's evolution. Note the large blocks of L2/TCM SRAM Qualcomm's Hexagon has a long…
They're not coming soon, but Intel's got big plans for revision to its bread-and-butter ISA.
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CPU architectures often gain interesting new instructions as they evolve, but application developers often find it difficult to take advantage of those instructions. Reluctance to lose backward-compatibility is one of the main roadblocks slowing developers from using advancements in newer computing architectures. Function multi-versioning (FMV), which first appeared in GCC 4.8, is a way to have multiple implementations of a function, each using a different architecture's specialized instruction-set extensions. GCC 6 introduces changes to FMV that make it even easier to bring architecture-b...
After many delays, Intel has finally launched the long-awaited Sapphire Rapids family of server processors, now named the 4th Generation Intel Xeon Scalable processors and the Intel Xeon CPU Max Series. Both names are mouthfuls, which has become typical of Intel product naming. Also typical is Intel’s ability to change the playing field to its…
The Evolution Of The QEMU Translator Alex Bennée | 11 mins read Introduction The QEMU team in Linaro sits inside a group known as the Toolchain Working Group (TCWG). The rest of the team spend their time working with compilers and other code generators such as GCC and LLVM. When dealing with emulation, QEMU has its own module known as the Tiny Code Generator (TCG). It shares many similarities with a compiler albeit one that works with different constraints than your typical compiler. As the code generator works on a just-in-time (JIT) basis it can’t afford to spend large amounts of time...