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October 2013 GNU Toolchain Update

Hi Guys,

  It has been a quiet month for GNU Toolchain developments.  But there are a few new features worth mentioning:

  * A port of the compiler to the Synopsys DesignWare ARC architecture has been contributed.

  * Function prototypes can now be annotated with a returns_nonnull attribute which lets the compile know that the return value will never be a null pointer.  This can allow the compiler to implement extra optimizations.

  * The AArch64 and ARM targets now support a command line option -mlra to enable the use of the Local Register Allocator as a replacement for the, sometimes troublesome, reload pass.

  * The MIPS target now supports a -mmsa command line option to enable or disable the use of the MIPS SIMD Architecture Extension instructions.

Cheers
  Nick

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