Regressions on master at commit r14-8871 vs commit r14-8868 on Linux/i686

[H.J. Lu]

Regressions on master at commit r14-8871 vs commit r14-8868 on Linux/i686
New failures:

New passes:
FAIL: g++.dg/modules/hello-1_b.C -std=c++17 (internal compiler error: canonical types differ for identical types 'std::tuple_element<__i, std::tuple<_Elements ...> >' and 'std::tuple_element<__i, std::tuple<_Elements ...> >')
FAIL: g++.dg/modules/hello-1_b.C -std=c++17 (test for excess errors)
FAIL: g++.dg/modules/hello-1_b.C -std=c++2a (internal compiler error: canonical types differ for identical types 'std::tuple_element<__i, std::tuple<_Elements ...> >' and 'std::tuple_element<__i, std::tuple<_Elements ...> >')
FAIL: g++.dg/modules/hello-1_b.C -std=c++2a (test for excess errors)
FAIL: g++.dg/modules/hello-1_b.C -std=c++2b (internal compiler error: canonical types differ for identical types 'std::tuple_element<__i, std::tuple<_Elements ...> >' and 'std::tuple_element<__i, std::tuple<_Elements ...> >')
FAIL: g++.dg/modules/hello-1_b.C -std=c++2b (test for excess errors)