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Clang Now Handles AMD Excavator "Bdver4" Tuning

Compiler

Published on 02 May 2014 01:31 PM EDT
Written by Michael Larabel in Compiler
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LLVM's Clang compiler can now support tuning its code generation for AMD's future "Excavator" micro-architecture.

Support was added to Clang today for supporting -march=bdver4, which exposes the instruction set extensions supported by the upcoming CPU/APUs based upon AMD's Excavator. Excavator/bdver4 is the successor to their Steamroller micro-architecture. Excavator cores expected to appear in 2015 within Carrizo APUs. Excavator adds support for the AVX2 and RDRAND instruction set extensions of Steamroller bdver3.

On the GCC side, AMD Excavator landed in GCC 4.9. With today's Git commit for bdver4 targeting in Clang, it will be part of the LLVM 3.5 release this summer -- well ahead of seeing any AMD Excavator processors.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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