https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69110
--- Comment #7 from vries at gcc dot gnu.org --- (In reply to vries from comment #4) > Created attachment 37210 [details] > minimal version, v2 needs -fno-tree-loop-im as well: ... $ gcc doloop-2.c -O1 -ftree-parallelize-loops=2 -Wl,-rpath=$(pwd -P)/install/lib64 -fno-tree-loop-im ...