Regressions on master at commit r11-7161 vs commit r11-7048 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: gcc.target/i386/pr97971.c  (test for errors, line 10)

New passes:
FAIL: g++.dg/lto/pr65549 cp_lto_pr65549_0.o assemble,  -std=gnu++14 -flto -g -O2 -fno-inline -flto-partition=max -Wno-return-type  (internal compiler error)
FAIL: g++.dg/lto/pr65549 cp_lto_pr65549_0.o assemble,  -std=gnu++14 -flto -g -Wno-return-type  (internal compiler error)
FAIL: g++.dg/modules/xtreme-header-1_a.H module-cmi  (gcm.cache/$srcdir/g++.dg/modules/xtreme-header-1_a.H.gcm)
FAIL: g++.dg/modules/xtreme-header-1_a.H -std=c++2a (internal compiler error)
FAIL: g++.dg/modules/xtreme-header-1_a.H -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/xtreme-header-1_b.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/xtreme-header-1_c.C -std=c++2a (test for excess errors)
FAIL: g++.dg/pr77550.C   (internal compiler error)
FAIL: g++.dg/pr77550.C   (test for excess errors)