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LLVM/Clang Gets Targeting Support For The Krait

Compiler

Published on 08 December 2013 12:03 AM EST
Written by Michael Larabel in Compiler
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LLVM and its Clang compiler now have optimization targeting support for Qualcomm's Krait ARM processor.

With the latest Git/SVN code for LLVM and Clang there's now support for "-mcpu=krait" in targeting the compiler output for Qualcomm's Snapdragon SoCs with Krait processors. Krait is Qualcomm's competitor to the Cortex-A15 CPU used by other ARM SoC vendors.

The support added to LLVM/Clang is currently modeled around the Cortex-A9 CPU feature-set but with support for VFP4 (Fused Multiply Add/Subtract) and hardware division features also present. Krait also shares a schedule model with the Cortex-A9.

The Krait support was added with this Clang commit and this LLVM commit. It's taken a while for "-mcpu=krait" targeting to come to LLVM/Clang as "Krait" isn't even found in GCC yet Qualcomm is very interested in LLVM.

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