Regressions on native/master at commit r15-7360 vs commit r15-7352 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-7360 vs commit r15-7352 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.dg/pr109393.c scan-tree-dump-times optimized "return 1;" 3