[Bug rtl-optimization/83321] [8 Regression] Conditional jump or move depends on uninitialised value in ira.c/ira-color.c

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83321

--- Comment #9 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Started with r255357.
But when using -march=znver1 I can reproduce the issue even with gcc-6.