https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78549
Thomas Koenig <tkoenig at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
Target Milestone|--- |8.0
Summary|Very slow formatted |[8 Regression] Very slow
|internal file output |formatted internal file
| |output
--- Comment #13 from Thomas Koenig <tkoenig at gcc dot gnu.org> ---
Here is the timing for gcc 6:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls ms/call ms/call name
32.15 0.99 0.99 output_float
12.34 1.37 0.38 formatted_transfer
11.04 1.71 0.34 next_format0
7.14 1.93 0.22 write_float
3.73 2.05 0.12 _gfortrani_write_block
3.25 2.15 0.10 next_char
2.92 2.24 0.09 data_transfer_init
2.60 2.32 0.08 _gfortrani_next_format
2.60 2.40 0.08 get_fnode
2.60 2.48 0.08 write_integer
2.27 2.55 0.07 _gfortrani_parse_format
2.27 2.62 0.07 finalize_transfer
2.27 2.69 0.07 parse_format_list
1.95 2.75 0.06 _gfortrani_next_record
1.14 2.78 0.04 _gfortran_transfer_array
0.97 2.81 0.03 _gfortrani_mem_alloc_r4
So, this does appear to be a regression for gcc8 at least.
The time is also longer (~20 s for trunk, ~14 s for gcc 6).
