== Progress == * TCWG-180 Debugging - LTO bootstrap failure in Aarch64 with GCC 4.9. (6/10) Tried to recompile object files that showed differences in GCC trunk on amd64 machine.It turned out that GCC make system always builds LTO files in “gcc” directory and uses prev-gcc/xg++ to build them. No differences when building stage2 and stage3 objects under same directory “gcc” in FSF trunk. Doing the same experiment with gcc 4.9 branch shows failure both in x86_64 and aarch64.
Communicated the issue to Richard Beiner. Got some feedback on debugging from Honza and Richard.
Tried passing –save-temps to BOOT_CFLAGS using FSF trunk, getting assembler errors. Need to come back to this problem after finding root cause.
Read about LTO passes and wpa (partitioned ) vs non portioned mode.
* Others (2/10) * Upstream patch review. * 1-1 Meeting Christophe. * Misc and internal meeting. * setup LLVM.
* Friday off (2/10).
== Plan ==
* Continue LTO bootstrap issue. * Benchmark Core mark with LTO. * Upstream patch review.
== MISC == * National holiday on 15th August .