Regressions on trunk at revision 249872 vs revision 249866

[Intel Automatic Testing System [Intel64 Core AVX2 PIC]]

New failures:
FAIL: gcc.dg/vect/pr79347.c -flto -ffat-lto-objects  scan-tree-dump-not vect "Invalid sum of "
FAIL: gcc.dg/vect/pr79347.c -flto -ffat-lto-objects  scan-tree-dump-not vect "Invalid sum of "
FAIL: gcc.dg/vect/pr79347.c scan-tree-dump-not vect "Invalid sum of "
FAIL: gcc.dg/vect/pr79347.c scan-tree-dump-not vect "Invalid sum of "

New passes: