Regressions on master at commit r15-4199 vs commit r15-4186 on Linux/i686

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-4199 vs commit r15-4186 on Linux/i686
New failures:

New passes:
FAIL: gcc.dg/pr67089-6.c scan-tree-dump-times widening_mul "SUB_OVERFLOW" 7