https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85416
--- Comment #9 from Martin Reinecke <mar...@mpa-garching.mpg.de> ---
Sure!
martin@martin-Latitude-E7450 ~/tmp $ gcc -O3 testcase2.c -lm
martin@martin-Latitude-E7450 ~/tmp $ perf stat ./a.out
Performance counter stats for './a.out':
1109,985866 task-clock (msec) # 0,999 CPUs utilized
2 context-switches # 0,002 K/sec
0 cpu-migrations # 0,000 K/sec
2.000 page-faults # 0,002 M/sec
3.155.388.780 cycles # 2,843 GHz
6.717.336.961 instructions # 2,13 insn per cycle
979.526.022 branches # 882,467 M/sec
38.112 branch-misses # 0,00% of all branches
1,110639187 seconds time elapsed
martin@martin-Latitude-E7450 ~/tmp $ gcc -O3 testcase2.c -march=native -lm
martin@martin-Latitude-E7450 ~/tmp $ perf stat ./a.out
Performance counter stats for './a.out':
7724,004864 task-clock (msec) # 1,000 CPUs utilized
86 context-switches # 0,011 K/sec
1 cpu-migrations # 0,000 K/sec
2.004 page-faults # 0,259 K/sec
22.129.645.853 cycles # 2,865 GHz
6.723.657.441 instructions # 0,30 insn per cycle
980.761.202 branches # 126,976 M/sec
171.813 branch-misses # 0,02% of all branches
7,726058359 seconds time elapsed
