[ACTIVITY] 9 - 13 November 2015

[Prathamesh Kulkarni]

* TCWG-72 (3/10)
- divmod transform approved by Richard
- builds cleanly on arm-linux-gnueabihf, aarch64-linux-gnu
- Investigating segfault with __bdi64_div.c
happens when mode == DImode and libval_mode == TImode
- Found another segfault on x86 with TImode, on arm
TImode is not supported and compiler aborts. Perhaps we should
not do the transform when mode is TImode ?
- Had a look at expand_binop_twoval_libfunc().
Wrote a similar function to obtain both results but this resulted
in infinite loop in emit_libcall_block_1
- Strangely the bug is reproducible only during the build and doesn't
trigger when compiled with preprocessed version of bid64_div.c
(passing the same set of options).
- waiting for upstream comments

* TCWG-319 (1/10)
- Submitted jobs for fp benchmark on a53, a57

* Misc:
- PR66214 appears to have gone (fixed or became latent), that was
blocking firefox LTO build with trunk
- PR65837 still appears to be present after r230327

* Public Holidays (6/10)
- Diwali festival

== Next Week ==
- Continue with TCWG-72, TCWG-319 benchmarking, target hook conversion
- Run SPEC2k6 with LTO

[Omair Javaid]

== Progress ==

LLDB development
-- Root Google Nexus devices and read debug module configuration with
kernel module [TCWG-429] [7/10]
-- Figure out steps to unlock and root Nexus S
-- Figure out steps to build kernel and kernel module for Nexus S
-- Tried out lldb watchpoints with custom kernel on Nexus S
-- Tried out reaching debug co processors without ptrace using kernel module.

-- Identify mix-mode debugging problems (ARM & Thumb) [TCWG-229] [2/10]
-- Ongoing Initial investigation and indentifying code areas needing changes

Miscellaneous [1/10]
-- Meetings, emails, discussions etc.

== Plan ==

-- Root Google Nexus devices and read debug module configuration with
kernel module [TCWG-429]
-- Complete app and kernel module to read debug coprocessor registers.
-- Try them out on remaining Android devices.

-- Identify mix-mode debugging problems (ARM & Thumb) [TCWG-229]
-- Further investigation and testing a mix mode application.