Release GCC ARM Embedded 6 major

Written for GNU Arm Embedded Toolchain by Andre Vieira on 2016-12-21

The 6 2016q4 major release is available at:


IMPORTANT NOTICE: As previously announced we are no longer releasing the binary packages of this toolchain on Launchpad, please see the link for above.

New Features

* All GCC 6 features, plus latest mainline features:
  + Full ARMv8-M support including atomics and Security Extensions
  + ARM PURECODE support for ARMv7-M and ARMv8-M Mainline
  + Co-processor intrinsics support
  + Cortex-M23 and Cortex-M33 support
  + -mthumb optional for Cortex-M devices

Important bugs fixed in 6 major release:

* Fix redundant load in loop
* Fixed stack corruption when using high registers and LR register
* Fixed internal compiler error when compiling empty FIQ interrupt handler
* Fix internal compiler error with LTO when building g++.dg/lto/20081219 testcase
* Fixed callee-saved register trashing when clobbering SP register
* Fixed internal compiler error when using -mslow-flash-data and floating-point
* Fixed wrong code generation with indirect sibbling calls
* Fixed spurious code removal

Known Changes and Issues

* Windows wildcard support missing
* Thumb1 code size regression due to new register allocation:
* Multilib is now enabled with --with-multilib-list=rmprofile when building the
  toolchain from source

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