Regressions on trunk at revision 263197 vs revision 263082

[H.J. Lu (ia32)]

New failures:
FAIL: gcc.dg/pr84452.c (internal compiler error)
FAIL: gcc.dg/pr84452.c (test for excess errors)
FAIL: gcc.target/i386/pr84309.c (internal compiler error)
FAIL: gcc.target/i386/pr84309.c (test for excess errors)

New passes: