Regressions on native/master at commit r11-5670 vs commit r11-5662 on Linux/x86_64

[H. J. Lu]

New failures:
FAIL: gcc.dg/lto/save-temps c_lto_save-temps_0.o-c_lto_save-temps_0.o link,  -O -flto -save-temps
FAIL: g++.dg/template/canon-type-4.C  -std=c++17 (internal compiler error)
FAIL: g++.dg/template/canon-type-4.C  -std=c++17 (test for excess errors)

New passes: