[Bug rtl-optimization/92264] [10 Regression] Compile time hog in 521.wrf_r with -Ofast -march=znver2 -g since r276318

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92264

--- Comment #14 from Martin Liška <marxin at gcc dot gnu.org> ---
For firefox with LTO we get:

$ wc -l /tmp/fbt
1645 /tmp/fbt
$ sort /tmp/fbt | uniq -c | sort -n | tac | head -n20
     10 64 /tmp/libxul.so.J1HwqB.ltrans17.o CollectReports 103 0
     10 64 /tmp/libxul.so.J1HwqB.ltrans17.o CollectReports 101 0
      6 64 /tmp/libxul.so.J1HwqB.ltrans17.o CollectReports 106 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 997 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 996 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 995 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 994 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 993 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 992 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 991 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 988 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 987 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 986 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 985 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 984 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 983 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 982 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 979 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 978 0
      2 64 /tmp/libxul.so.J1HwqB.ltrans55.o GetFormat 977 0

there are no bigger values than 1000.