Hi. I've updated the patch based on Honza's notes and installed it as 5f32f9cf13f99f6295591927950aaf98aa8dba91.
Just for the record, there are stats for cc1plus for PGO bootstrap: before: == Stats for gcc == stats for indirect_call: total: 9210 invalid: 760 tracked values: 0 values: 6248 times (67.84%) 1 values: 1795 times (19.49%) 2 values: 220 times (2.39%) 3 values: 87 times (0.94%) 4 values: 100 times (1.09%) stats for topn: total: 1513 invalid: 220 tracked values: 0 values: 1028 times (67.94%) 1 values: 149 times (9.85%) 2 values: 50 times (3.30%) 3 values: 38 times (2.51%) 4 values: 28 times (1.85%) after: stats for indirect_call: total: 9210 invalid: 600 tracked values: 0 values: 6280 times (68.19%) 1 values: 1856 times (20.15%) 2 values: 264 times (2.87%) 3 values: 157 times (1.70%) 4 values: 53 times (0.58%) stats for topn: total: 1513 invalid: 178 tracked values: 0 values: 1034 times (68.34%) 1 values: 176 times (11.63%) 2 values: 68 times (4.49%) 3 values: 39 times (2.58%) 4 values: 18 times (1.19%) Martin