Regressions on native/master at commit r15-1297 vs commit r15-1244 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on master at commit r15-1297 vs commit r15-1244 on Linux/x86_64
New failures:

New passes:
FAIL: gcc.target/i386/pr77881.c scan-assembler js[ \t].?L
FAIL: gcc.target/i386/pr77881.c scan-assembler js[ \t].?L