Regressions on master at commit r16-5588 vs commit r16-5587 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r16-5588 vs commit r16-5587 on Linux/x86_64
New failures:
FAIL: objc/execute/bf-15.m compilation,  -O2 -fgnu-runtime

New passes: