Thursday 26th January 2012

This month's meetings

WorkingGroups/ToolChain/Meetings
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Attendees

  • Åsa Sandahl
  • Ken Werner
  • Michael Hope
  • Peter Maydell
  • Ramana Radhakrishnan
  • Ulrich Weigand

Agenda

  • Stand up call

Minutes

Peter:

  • Added functionality to boot wrapper that starts kernel on a Fast Model
  • Uses semihosting
  • Discussions on IRC and email with the Validation people

Ken:

  • libunwind this week - various direct communications
  • Changed Qt build in OpenEmbedded to respect optimisation flags

  • Kicked off the -O3 -no-vect build
  • Wrote a script to measure memory footprint when running

Ulrich:

  • Committed info proc and core file generation!
  • Backported to Linaro GCC
  • GDB 7.4 has been released
  • Next release should be based on it
  • Will get in touch with Thiago re: Linaro GDB 7.4
  • Investigating on the GCC side
  • Forward propagation looks really good on mainline
  • Regressions on 4.6 though
  • Problem seems to be an unrelated issue with register allocation
  • In one benchmark, one block of six registers is maintained as one pseudo register
  • Can't re-use the original three until you get to the last result
  • Mainline is the same but can still find somewhere to allocate
  • Input to the allocator is the same, the mainline allocator is just better

Asa:

  • Focus on -O2 vs -O3 benchmarks
  • Worked on charts and sharing them, also done for size of executable
  • Benchmarking on GCC 4.7 trunk
  • Have results, need to process
  • V8 benchmark - seems possible to run SunSpider stand alone on just the engine

  • Is included with WebKit

  • Asa to track down partial-partial PRE and benchmark it

Ramana:

  • Looking into partial partial PRE
  • Put the patch in, see what we get, looking at alternate implementation
  • Couple of upstream bugs, committed upstream
  • PIC addresses and combine
  • Will backport to 4.6 after a shakedown

Michael:

  • Easier way to spawn jobs
  • KVM overall plan
  • Imported GDB 7.4
  • Binary toolchain release
  • O3 writeup
  • Output/finish pages for cards
  • Add QEMU to the auto builders
  • KVM discussion kick off

WorkingGroups/ToolChain/Meetings/Archive/2012-01-26 (last modified 2013-08-30 11:48:41)