Regressions on native/releases/gcc-15 at commit r15-10443 vs commit r15-10439 on Linux/x86_64

[Haochen Jiang via Gcc-regression]

Regressions on releases/gcc-15 at commit r15-10443 vs commit r15-10439 on 
Linux/x86_64
New failures:
FAIL: gcc.target/i386/builtin-copysign-8b.c check-function-bodies foo

New passes:
FAIL: gcc.target/i386/fnabs.c scan-assembler-times \tv?orp[sd][ \t] 2
FAIL: gcc.target/i386/fnabs.c scan-assembler-times \tv?orp[sd][ \t] 2