Committed Dan's RVCT interoperation patch, both upstream and to Linaro
GCC 4.6.
Adjusted Benrd's "Discourage NEON on Cortex-A8" patch following Richard
Earnshaw's comments, and reposted upstream. The new version was
approved, and committed. I've also submitted a merge proposal to Linaro
GCC 4.6.
Dropped Tom's patch for marking smalls strings read-only. This
optimization seems to have no visible effect for ARM in GCC 4.6. I'll
leave it it to Tom to forward-port, if it's still meaningful for MIPS.
Julian has committed the patch for lp:675347, so I've submitted merge
requests to both Linaro GCC 4.5 and 4.6.
Bernd has posted the shrink wrapping patches upstream. I've posted this
info in all the relevant Linaro tracking tickets.
Talked Revital Eres through the Bazaar/Launchpad merge request system.
Tried to understand why GCC 4.6 does not use multiply-and-accumulate
efficiently, when used with 64-bit values. It seems that the compiler
sometimes uses (subreg:SI (reg:DI ...)) and sometimes just uses a plain
(reg:SI ..) and those don't combine to give useful patterns, but I
haven't got to the bottom of it yet.
Tested an FSF GCC 4.6 snapshot from the 23rd. All well, so I've merged
it to the Linaro GCC 4.6 branch.
* Future Absence
Away Monday 28th to Friday 1st April.
----
Upstream patched requiring review:
* Thumb2 constants:
http://gcc.gnu.org/ml/gcc-patches/2010-12/msg00652.html
* ARM EABI half-precision functions
http://gcc.gnu.org/ml/gcc-patches/2011-02/msg00874.html
* ARM Thumb2 Spill Likely tweak
http://gcc.gnu.org/ml/gcc-patches/2011-02/msg00880.html
* NEON scheduling patch
http://gcc.gnu.org/ml/gcc-patches/2011-02/msg01431.html
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