Summary:
* Linaro binary toolchain 2012.05 release.
* Code size benchmark analysis.
Details:
1. Linaro binary toolchain 2012.05 release
* Check-in the patches to support multilib and arm-linux-gnueabihf
in linaro crosstool.
* Update config to 2012.05 release, which will build multilib toolchain:
default option: -mthumb -march=armv7-a -mfloat-api=hard
-mtune=cortex-a9 -mfpu=vfpv3-d16
armv4t option: -marm -march=armv4t -mfloat-api=soft
* Try u-boot build with the armv4t option.
* Add arm-linux-gnueabihf.mpi for windows installer.
* Tests and regression analysis.
2. During code size regression analysis, we find postreload can not
optimize some cases when spilling happens, reassociation for PHI note
might lead to spilling, expand generates inefficient codes which can
not be optimized by later passes and poor code layout introduces more
branch instructions.
Plans:
* Linaro binary toolchain 2012.05 release.
* Investigate other code size regressions in 4.7.
Best regards!
-Zhenqiang
== GCC ==
* Completed implementation of new optimization sub-pass to improve
re-association of plus/minus chains for types with undefined
overflow (to improve end-of-loop value computation);
posted to gcc-patches for review.
Mit freundlichen Gruessen / Best Regards
Ulrich Weigand
--
Dr. Ulrich Weigand | Phone: +49-7031/16-3727
STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E.
IBM Deutschland Research & Development GmbH
Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk
Wittkopp
Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht
Stuttgart, HRB 243294
Current Milestones:
|| || Planned || Estimate || Actual ||
||cp15-rework || 2012-01-06 || 2012-06-23 || ||
Historical Milestones:
||initial-a15-system-model || 2012-01-27 || 2012-01-27 || 2012-01-17 ||
||qemu-kvm-getting-started || 2012-03-04?|| 2012-03-04 || 2012-02-01 ||
== cp15-rework ==
* fixed various issues, sent out v2 series, looks good to me
== other ==
* qemu-linaro 2012.05 released
* thinking about how to handle TrustZone in the context of QEMU/KVM
(we're not going to try to do a full emulation, but we need to
define a coherent line for how we support running guests that
are expecting to run as either S or NS PL1/0 kernels)
* had a play with booting UEFI on QEMU -- fails early on trying
to use the TrustZone-only VBAR register
* usual upstream maintainer duties
-- PMM
On 17 May 2012 18:23, Zhenqiang Chen <zhenqiang.chen(a)linaro.org> wrote:
>> Some are marked as unsupported but shouldn't be:
>>
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-11a.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-11b.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-11.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-11c.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-25.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-26.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-28.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-2.c
>> +UNSUPPORTED: gcc.dg/tree-ssa/gen-vect-32.c
>
> The root cause is "target vect_cmdline_needed". For those cases, they
> have notes as:
>
> /* { dg-do run { target vect_cmdline_needed } } */
>
> In function "check_effective_target_vect_cmdline_needed" of
> lib/target-supports.exp, it check_effective_target_arm_neon.
>
> For our build, it is arm neon,
> check_effective_target_vect_cmdline_needed return 0.
>
> A quick fix is to add another dg-do run like:
> /* { dg-do run { target arm*-*-*eabihf } } */
I've looked into this further and the tests make no sense. The test
themselves are turned off unless the compiler needs extra command line
arguments to enable some type of SIMD. See PR21292. Let's discuss
this on Monday.
I've put an updated list at:
http://people.linaro.org/~michaelh/incoming/hard-float-builder-diff-2.txt
The interesting ones below. They're a mix of assembler faults, ICEs,
and testisims. None are due to the change in triplet so please
propose your patch upstream.
-- Michael
+FAIL: gcc.c-torture/compile/sync-1.c -O0 (test for excess errors)
+FAIL: gcc.c-torture/compile/sync-3.c -O0 (test for excess errors)
/tmp/ccGuCO1R.s:463: Error: co-processor offset out of range
** Doesn't happen with a natty sysroot. Assembler fault?
+FAIL: gcc.dg/builtin-apply2.c execution test
** Testism. Skips if an explicit float-abi=hard is passed.
+FAIL: gcc.dg/pr48335-5.c (test for excess errors)
(insn 11 10 12 3 (set (reg:DI 141)
(unspec:DI [
(mem/c:DI (plus:SI (reg/f:SI 129 virtual-stack-vars)
(const_int -8 [0xfffffffffffffff8])) [2 S8 A32])
] UNSPEC_MISALIGNED_ACCESS))
/cbuild/slaves/ursa2/gcc-linaro-4.7+bzr114985~michaelh1~hard-builder-test/gcc/gcc-linaro-4.7/gcc/testsuite/gcc.dg/pr48335-5.c:16
-1
(nil))
** The unaligned access support doesn't include an unaligned DI pattern?
+FAIL: gcc.dg/torture/stackalign/builtin-apply-2.c -Os execution test
** Testism. Assumes doubles are passed in core registers.
+UNSUPPORTED: gcc.target/arm/mmx-1.c
/cbuild/slaves/ursa2/gcc-linaro-4.7+bzr114985~michaelh1~hard-builder-test/gcc/gcc-linaro-4.7/gcc/testsuite/gcc.target/arm/g2.c:12:1:
sorry, unimplemented: Thumb-1 hard-float VFP ABI
** Various forms. Needs thought.
The Linaro Toolchain Working Group is pleased to announce the release of
Linaro QEMU 2012.05.
Linaro QEMU 2012.05 is the latest monthly release of qemu-linaro. Based
off upstream (trunk) QEMU, it includes a number of ARM-focused bug fixes
and enhancements.
New in this month's release:
- Beagle bootrom emulation now correctly handles FAT12/FAT16
images (thanks to Peter Chubb for the bug report and patch).
- We now support running ARM BE8 userspace binaries (ie
byte-invariant big-endian data and little-endian code).
Known issues:
- Graphics do not work for OMAP3 based models (beagle, overo)
with 11.10 Linaro images.
- Audio may not work on Versatile Express models with the latest
Linaro kernel/hardware packs (LP:977610).
The source tarball is available at:
https://launchpad.net/qemu-linaro/+milestone/2012.05
More information on Linaro QEMU is available at:
https://launchpad.net/qemu-linaro
There will be no release of Linaro GDB this month. We're busy working
on upstreaming Android support and will backport them as they come
ready.
-- Michael
The Linaro Toolchain Working Group is pleased to announce the 2012.05
release of both Linaro GCC 4.7 and Linaro GCC 4.6.
Linaro GCC 4.7 2012.05 is the second release in the 4.7 series. Based
off the latest GCC 4.7.0+svn187448 release, it includes performance
improvements especially around 64 bit operations.
Interesting changes include:
* Updates to GCC 4.7.0+svn187448
* Uses the new /lib/ld-linux-armhf.so.3 loader for hard float binaries
* Adds support for negating 64 bit values in NEON
* Improves loading of 64 bit immediate values in NEON
Fixes:
* LP: #959242 ICE: in vect_is_simple_use_1, at tree-vect-stmts.c
* LP: #968766 GCC 4.6.3 (cc1) crashes when compiling MPFR 3.1.0
Linaro GCC 4.6 2012.05 is the fifteenth release in the 4.6 series.
Based off the latest GCC 4.6.3+svn187273 release, this is the second
release after entering maintenance.
Interesting changes include:
* Updates to 4.6.3+svn187273
Fixes:
* LP: #959242 ICE: in vect_is_simple_use_1, at tree-vect-stmts.c
* LP: #968766 GCC 4.6.3 (cc1) crashes when compiling MPFR 3.1.0
* LP: #972648 ICE (segfault) in gsi_for_stmt
The source tarballs are available from:
https://launchpad.net/gcc-linaro/+milestone/4.7-2012.05https://launchpad.net/gcc-linaro/+milestone/4.6-2012.05
Downloads are available from the Linaro GCC page on Launchpad:
https://launchpad.net/gcc-linaro
More information on the features and issues are available from the
release page:
https://launchpad.net/gcc-linaro/4.7/4.7-2012.05
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 support(a)linaro.org
-- Michael
Hi,
OpenEmbedded-Core/meta-linaro:
* reverted the gcc 4.7 support from the denzil branch as it's causing
too much trouble
* instead we'll use a oe-core master snaphsot for 4.7
* committed a fix to our kernel bbappend
* started to look into cbuild
* added configurations to support building the images for all
oe-core targets
* created lp:~kwerner/cbuild/oecore
* kicked off a build for ARM, MIPS, PPC, X86, X86_64 using Linaro
GCC 4.6 2012.04
Misc:
* IBM internal meetings
* public holiday on Thu, vacation on Fri
I'll be back on monday
Regards,
Ken
Hi Ramana. FYI, gcc trunk fails to bootstrap with:
../../../../gcc-4.8~/libgcc/libgcc2.c: In function '__mulvdi3':
../../../../gcc-4.8~/libgcc/libgcc2.c:397:1: internal compiler error:
in df_uses_record, at df-scan.c:3179
A cross compiler fails when building EEMBC with:
(insn 1166 1165 1167 155 (set (reg:CC 24 cc)
(compare:CC (reg:SI 2148 [ D.6766 ])
(const_int 5000 [0x1388]))) iirflt01/bmark.c:501 -1
(nil))
iirflt01/bmark.c:1138:1: internal compiler error: in extract_insn, at
recog.c:2131
The last revision that bootstrapped was 187203. 187223 and 187275 failed.
-- Michael
