Regressions on master at commit r12-7620 vs commit r12-7608 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: libitm.c/memcpy-1.c (internal compiler error: in extract_insn, at recog.cc:2769)
FAIL: libitm.c/memcpy-1.c (test for excess errors)
FAIL: libitm.c/memset-1.c (internal compiler error: in extract_insn, at recog.cc:2769)
FAIL: libitm.c/memset-1.c (test for excess errors)

New passes:
FAIL: g++.dg/other/pr84964.C  -std=c++14  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++14  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++17  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++17  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++20  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++20  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++98  (test for warnings, line 6)
FAIL: g++.dg/other/pr84964.C  -std=c++98  (test for warnings, line 6)