https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69709
--- Comment #8 from Dominik Vogt <vogt at linux dot vnet.ibm.com> --- Created attachment 37790 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=37790&action=edit Test case The option -fpeel-loops triggers the bug. The attached program has a different result with -fpeel-loops than without it. $ gcc -O2 -march=z10 -fpeel-loops pr69709.c && ./a.out 1 bits set in result $ gcc -O2 -march=z10 pr69709.c && ./a.out 2 bits set in result (2 is the correct result).
