Regressions on native/master at commit r15-8883 vs commit r15-8878 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-8883 vs commit r15-8878 on Linux/x86_64
New failures:

New passes:
FAIL: libgomp.graphite/force-parallel-8.c execution test