Regressions on master at commit r16-4648 vs commit r16-4642 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r16-4648 vs commit r16-4642 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.target/i386/builtin-copysign-8b.c check-function-bodies foo