http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54487
--- Comment #32 from tejohnson at gcc dot gnu.org 2012-09-14 21:06:54 UTC --- Author: tejohnson Date: Fri Sep 14 21:06:49 2012 New Revision: 191312 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=191312 Log: Backport from trunk r190952 to add counter histogram to gcov program summary, and follow-on fixes for PR gcov-profile/54487 (r191074 and r191238). 2012-09-14 Teresa Johnson <tejohn...@google.com> * libgcc/libgcov.c (gcov_histogram_insert): New function. (gcov_compute_histogram): Ditto. (sort_by_reverse_gcov_value): Remove function. (gcov_compute_cutoff_values): Ditto. (gcov_merge_gcda_file): Merge histogram while merging summary. (gcov_gcda_file_size): Include histogram in summary size computation. (gcov_write_gcda_file): Remove assert that is no longer valid. (gcov_exit_init): Invoke gcov_compute_histogram. * gcc/gcov-io.c (gcov_write_summary): Write out non-zero histogram entries to function summary along with an occupancy bit vector. (gcov_read_summary): Read in the histogram entries. (gcov_histo_index): New function. (gcov_histogram_merge): Ditto. * gcc/gcov-io.h (gcov_type_unsigned): New type. (struct gcov_bucket_type): Ditto. (struct gcov_ctr_summary): Include histogram. (GCOV_TAG_SUMMARY_LENGTH): Update to include histogram entries. (GCOV_HISTOGRAM_SIZE): New macro. (GCOV_HISTOGRAM_BITVECTOR_SIZE): Ditto. (gcov_gcda_file_size): New parameter. * gcc/profile.c (NUM_GCOV_WORKING_SETS): Ditto. (gcov_working_sets): New global variable. (compute_working_sets): New function. (find_working_set): Ditto. (get_exec_counts): Invoke compute_working_sets. * gcc/loop-unroll.c (code_size_limit_factor): Call new function find_working_set to obtain working set information. * gcc/coverage.c (read_counts_file): Merge histograms, and fix bug with accessing summary info for non-summable counters. * gcc/basic-block.h (gcov_type_unsigned): New type. (struct gcov_working_set_info): Ditto. (find_working_set): Declare. * gcc/gcov-dump.c (tag_summary): Dump out histogram. * gcc/configure.ac (HOST_HAS_F_SETLKW): Set based on compile test using F_SETLKW with fcntl. * gcc/configure, gcc/config.in: Regenerate. Modified: branches/google/gcc-4_7/gcc/ChangeLog.google-4_7 branches/google/gcc-4_7/gcc/basic-block.h branches/google/gcc-4_7/gcc/config.in branches/google/gcc-4_7/gcc/configure branches/google/gcc-4_7/gcc/configure.ac branches/google/gcc-4_7/gcc/coverage.c branches/google/gcc-4_7/gcc/gcov-dump.c branches/google/gcc-4_7/gcc/gcov-io.c branches/google/gcc-4_7/gcc/gcov-io.h branches/google/gcc-4_7/gcc/loop-unroll.c branches/google/gcc-4_7/gcc/profile.c branches/google/gcc-4_7/libgcc/ChangeLog.google-4_7 branches/google/gcc-4_7/libgcc/libgcov.c
