https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26854
--- Comment #132 from lucier at math dot purdue.edu --- Created attachment 37763 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37763&action=edit Detailed time/memory report when compiling _num.i Generated with heine:~/Downloads> /pkgs/gcc-mainline/bin/gcc -v Using built-in specs. COLLECT_GCC=/pkgs/gcc-mainline/bin/gcc COLLECT_LTO_WRAPPER=/pkgs/gcc-mainline/libexec/gcc/x86_64-pc-linux-gnu/6.0.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: ../../gcc-mainline/configure --prefix=/pkgs/gcc-mainline --enable-checking=release --enable-languages=c --disable-multilib --enable-gather-detailed-mem-stats Thread model: posix gcc version 6.0.0 20160222 (experimental) (GCC) heine:~/Downloads> /pkgs/gcc-mainline/bin/gcc -v -c -O2 -fmem-report -ftime-report _num.i -save-temps > & ! report-compiler_num2 There are some negative numbers in the file that suggest that some bitmap memory counters overflowed: tree-ssa-structalias.c:1268 (build_pred_graph) 62026224: 15.9% 62048368 7961338: 8.5% 186859 248364 heap df-problems.c:3658 (df_note_compute) 88025520: 22.6% 88026080 3719686: 4.0% 515641 1741186 heap df-problems.c:4405 (df_md_alloc) -39759960:4741239668736.0% -40 520627: 0.6% 0 0 heap df-problems.c:225 (df_rd_alloc) -17948440:4741239668736.0% -40 284572: 0.3% 0 0 heap -------------------------------------------------------------------------------------------------------------------------------------------- Total 389070056 94152365