linaro-toolchain

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5600 discussions

by Ramana Radhakrishnan

Hi, Does anyone have anything they'd like to bring up in tomorrow's performance call. ? I don't have any topics other than following on action items from last time's call - which was comparing movw/ movt with constant pools . https://wiki.linaro.org/WorkingGroups/ToolChain/Meetings/2012-01-10 Please add to it as you deem fit. cheers Ramana

13 years, 5 months

[ACTIVITY] 2nd - 6th January

by Andrew Stubbs

* Linaro Continued work on getting GCC to build on LAVA. I've ironed out a few more bugs from my test scripts, but it's slow going because a test runs takes a long time to run, and there are very few useful error messages when something goes wrong. Wrote, posted, and committed a patch to fix the "120" testsuite bug I encountered last month. Basically the GCC testsuite's "headmerge-1" testcase would have failed from now until September because a sloppy regex happening to match "120" in the toolchain version string's snapshot date. I've also backported it to upstream 4.6 and posted a merge request for Linaro 4.6. Continued running benchmarks for the generic tuning project. Continued looking at optimizing 64-bit shifts. No real progress this week though. * Other Monday: Public holiday. Tuesday: Vacation. Caught up on a mountain of email.

13 years, 5 months

[ACTIVITY] Jan 04 - Jan 06

by Zhenqiang Chen

Summary: * Read armV7-A/R reference manual and analyze bugs. Details: * Read armV7-A/R reference manual and share the instruction set part with local team. * Analyze bugs: LP: #889985 "binaries: can't step out of helper functions" and LP: #889984 "binaries: should step across helper functions" Plan: * Ramp-up on gcc. Planed leave: * Jan 21 - 29: Chinese new year holiday. Best regards! -Zhenqiang

13 years, 5 months

Jobs/tasks inside the group

by Michael Hope

Hi there. I want each administrative task inside our group to have an owner and a fill-in. I've started a list at: https://wiki.linaro.org/WorkingGroups/ToolChain/Jobs I took the chance to hand off some of my jobs as well so you might see your name somewhere new (but hopefully not surprising). I'll discuss this at tonight's meeting and in the 1-on-1s. Reply away if you'd like more detail or have a task to add. -- Michael

13 years, 5 months

[ACTIVITY] report week 01

by Peter Maydell

[short week, three days] RAG: Red: Amber: Green: Current Milestones: || || Planned || Estimate || Actual || ||cp15-rework || 2012-01-06 || 2012-01-17 || || ||initial-a15-system-model || 2012-01-27 || 2012-01-27 || || ||qemu-kvm-getting-started || 2012-03-04?|| 2012-03-04?|| || (for blueprint definitions: https://wiki.linaro.org/PeterMaydell/QemuKVM) Historical Milestones: ||a15-usermode-support || 2011-11-10 || 2011-11-10 || 2011-10-27 || ||upstream-omap3-cleanup || 2011-11-10 || 2011-12-15 || 2011-12-12 || == other == * catchup on email, etc * patch review: patches for Calxeda's Highbank SoC model * put together pull requests for target-arm and arm-devs patchqueues * rebased qemu-linaro, added patches for things we want to fix in 2011.01, rolled a tarball, tested it and sent to Michael H for testing

13 years, 5 months

Operations on intrinsic types

by Michael Hope

Hi Ramana. You were right about being able to do operations on intrinsic types. Instead of doing the admittedly made up: int16x4_t foo2(int16x4_t a, int16x4_t b) { int16x4_t ca = vdup_n_s16(0.2126*256); int16x4_t cb = vdup_n_s16(0.7152*256); return vadd_s16(vmul_s16(ca, a), vmul_s16(cb, b)); } you can do: int16x4_t foo3(int16x4_t a, int16x4_t b) { int16x4_t ca = vdup_n_s16(0.2126*256); int16x4_t cb = vdup_n_s16(0.7152*256); return ca*a + cb*b; } which is more readable and, as an added bonus, generates the multiply-and-accumulate that I missed when using intrinsics. Nice. -- Michael

13 years, 5 months

[ACTIVITY] Jan 02 - Jan 05

by Ulrich Weigand

== GDB == * Ongoing discussion on remote support for "info proc" and core file generation. * Fixed various GDB 7.4 regressions on multiple platforms. == GCC == * Patch review week. * Started looking into current status of performance patches. 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

13 years, 5 months

Release notes for 2012.01

by Michael Hope

I liked Andrew's idea of sharing the release notes so I stole it for this month: https://wiki.linaro.org/MichaelHope/Sandbox/GCC2012.01ReleaseNotes Please add anything new and noteworthy that you've done to this draft. -- Michael

13 years, 5 months

[ACTIVITY] weekly status

by Ken Werner

Hi, * Android * migrated my linaro android build environment * did a small change to the debuggerd patch (thanks Sylvain) * OpenEmbedded * the linaro binary toolchain uses multiarch paths while OE doesn't -> setup a workaround to make it look like a classic one * however, I think what I really want is to build the libc instead of using the one provided by the binary external toolchain * The core-image-minimal still doesn't boot properly because 'init' doesn't come properly Regards Ken

13 years, 5 months

Patch drop: fwprop.c patch for neon-strided-load-extract

by Richard Sandiford

The remaining change for neon-strided-load-extract is to allow fwprop.c to propagate: (set (reg X) (subreg (reg Y) N)) even if no further simplifications are possible. I posted the original patch for comments here: http://article.gmane.org/gmane.comp.gcc.patches/246180/ and fixed the problem that H.J. spotted. I wasn't entirely happy with the benchmark results though, so it never became an RFA. Richard gcc/ * fwprop.c (propagate_rtx): Also set PR_CAN_APPEAR for subregs. Index: gcc/fwprop.c =================================================================== --- gcc/fwprop.c 2011-09-15 14:36:23.206143787 +0100 +++ gcc/fwprop.c 2011-09-15 14:36:40.995131564 +0100 @@ -664,7 +664,12 @@ propagate_rtx (rtx x, enum machine_mode return NULL_RTX; flags = 0; - if (REG_P (new_rtx) || CONSTANT_P (new_rtx)) + if (REG_P (new_rtx) + || CONSTANT_P (new_rtx) + || (GET_CODE (new_rtx) == SUBREG + && REG_P (SUBREG_REG (new_rtx)) + && (GET_MODE_SIZE (mode) + <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (new_rtx)))))) flags |= PR_CAN_APPEAR; if (!for_each_rtx (&new_rtx, varying_mem_p, NULL)) flags |= PR_HANDLE_MEM;

13 years, 5 months

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