1. Release Linaro GCC 4.5 and 4.6
2. Build our platform build with the results to test
Here's Michael's release email:
The Linaro Toolchain Working Group is pleased to announce the release
of both Linaro GCC 4.5 and Linaro GCC 4.6.
Linaro GCC 4.5 2011.05 is the tenth release in the 4.5 series. Based
off the latest
GCC 4.5.3+svn173417, it adds new optimisations, much improved support
for strided load/stores, and fixes for many of the issues found in the
last month.
Interesting changes in 4.5 include:
* Updates to 4.5.3+r173417
* Performance improvements in NEON strided loads and stores
* Performance improvements targeted at EEMBC CoreMark
* Precompiled header support on recent Linux kernels
Fixes:
* LP: #660156: Heap randomisation causes PCH testsuite failures
* LP: #784375: vset_lane_u8 intrinsic generates wrong lane number
* LP: #759409: Profiled bootstrap fails in FSF GCC 4.5
* LP: #723086: Test regressions in the Fortran test suite
The strided load/store improvements allow both NEON intrinsics and the
vectoriser to efficiently access values that occur at every n'th
address, such as all of the red values in a RGB image or all of the
left channel samples in a interleaved audio array. Previous versions of GCC
would unpack the values onto the stack instead of using the registers
directly.
The CoreMark improvements improve the code generation for the hot
functions in benchmark. This release is now on par with Linaro GCC
4.4 and significantly ahead of other FSF or Linaro 4.5 based
compilers. This fixes the long-standing problems of ARMv5 being
faster than ARMv7 and 4.4 based compilers being faster than 4.5 based
ones.
Linaro GCC 4.6 is the third release in the 4.6 series. Based off the
latest GCC 4.6.0+svn173480, it adds new optimisations, vectoriser
improvements, and continues with the merge of many ARM-focused
changes.
Interesting changes include:
* Updates to 4.6.0+r173417
* Brings forward more of the performance improvements from Linaro GCC 4.5
* Adds support for swing-modulo scheduling
* Fixes precompiled header support on recent Linux kernels
* Changes the default NEON vector size to quads
* Adds auto-detection of the best vector size
* Adds vectorisation improvements due to better if-conversion
Fixes:
* LP: #714921: Uses an unreasonable amount of memory to compile QEMU on armel
* LP: #723086: Test regressions in the Fortran test suite
The source tarball is available from:
https://launchpad.net/gcc-linaro/+milestone/4.5-2011.05-0
https://launchpad.net/gcc-linaro/+milestone/4.6-2011.05-0
Downloads are available from the Linaro GCC page on Launchpad:
https://launchpad.net/gcc-linaro
Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain
Bugs: https://bugs.launchpad.net/gcc-linaro/
Questions? https://ask.linaro.org/
Interested in commercial support? inquire at <email address hidden>
-- Michael
Download URL: http://