Regressions on master at commit r14-8326-gd9ed3ac20e893f vs commit r14-8315-ga57439d6193792 on Linux/x86_64

[H.J. Lu]

Regressions on master at commit r14-8326-gd9ed3ac20e893f vs commit r14-8315-ga57439d6193792 on Linux/x86_64
New failures:
FAIL: 30_threads/future/members/poll.cc  -std=gnu++17 execution test
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps
FAIL: libgomp.fortran/target-nowait-array-section.f90   -O  execution test

New passes:
FAIL: gcc.target/i386/pr82580.c scan-assembler-not \\mmovzb