Thursday 9th August 2012

This month's meetings

WorkingGroups/ToolChain/Meetings
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Attendees

  • Michael Hope
  • Peter Maydell
  • Ramana Radhakrishnan
  • Ulrich Weigand
  • Zhenqiang Chen
  • Christophe Lyon
  • Matt Gretton-Dann

Agenda

  • Stand up call

Minutes

Peter:

  • Keeping QEMU up with the KVM kernel API changes, pulled Rusty's patches
  • Nearly at the point of RFC'ing to qemu-devel
  • Upstream patch review
    • Samsung are doing save/restore for SD cards
    • Missing save/restore bitmap (for the write protect group state)
    • unsigned long underneath so serialising is tricky
  • Hard freeze is coming up, need to check

Ulrich:

  • Backporting the vector alignment patch to 4.6, 4.7 mainline
  • Seeing extra failures on 4.6, need to investigate
  • mp3player regressions
    • Unexpected with change of vector alignment
    • Checked the hotspot with perf and gcov
    • A one source line loop body
    • perf shows more hits
    • But the body is the same and also not vectorised
    • Cache effects?
    • Forced all globals to 16 bytes and regression goes away
    • But manually aligning the hot variables doesn't fix it

Zhenqiang:

  • Embedded toolchain side for code size
  • Fixed a crosstool-NG issue with multithreading and GOLD
  • Set up DENBench, EEMBC locally

Matt:

  • Doing initial setup, accounts, new laptop, etc
  • Can build off FSF trunk

Christophe:

  • First 24 hours!
  • Reading HR docs, areas on wiki

Michael:

  • Release branch merges
  • ST-E re: dso_handle and dynamic libraries

  • VFP vs NEON and vectoriser vs without results
  • PGO and LTO support in EEMBC, DENBench, SPEC
  • Runs of each
  • Gave an interview for a LLVM position

Ramana:

  • Looking at NEON intrinsic patches, addressing Richard's comments
  • Looking at auto inc/dec patches, nothing to gain in SPEC
  • Various internal work

WorkingGroups/ToolChain/Meetings/Archive/2012-08-09 (last modified 2013-08-30 11:48:01)