Regressions on native/master at commit r15-7199 vs commit r15-7179 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-7199 vs commit r15-7179 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.target/i386/pr63527.c scan-assembler-not movl[ \t]%[^,]+, %ebx