Regressions on trunk at revision 266364 vs revision 266340

[H.J. Lu (ia32 Core i7)]

New failures:
ERROR: tcl error sourcing /export/gnu/import/git/gcc-test-ia32corei7/src-trunk/gcc/testsuite/g++.dg/lto/lto.exp.
ERROR: unmatched open brace in list

New passes:
FAIL: gcc.dg/tree-ssa/20030711-2.c scan-tree-dump-times dom2 "rtmem" 1
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++14  (test for errors, line 17)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++17  (test for errors, line 17)
FAIL: g++.dg/vect/slp-pr56812.cc  -std=c++98  (test for errors, line 17)