Regressions on native/master at commit r17-3446 vs commit r17-3443 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r17-3446 vs commit r17-3443 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.target/i386/abi-mix-1.c (test for excess errors)
FAIL: gcc.target/i386/abi-mix-1.c (test for excess errors)