Regressions on trunk at revision 220811 vs revision 220808

[H.J. Lu ia32]

New failures:
ERROR: 29_atomics/atomic_flag/test_and_set/explicit-hle.cc: can't read "et_cache(ia32,value)": no such element in array for " dg-options 3 "-std=gnu++11 -g0 -fno-exceptions -fno-asynchronous-unwind-tables -march=i486" { target ia32 } "
ERROR: decimal/compound-assignment-memfunc.cc: can't read "additional_sources": no such variable for " dg-require-effective-target 18 dfp "

New passes:
ERROR: 29_atomics/atomic_flag/test_and_set/explicit-hle.cc: can't read "additional_sources": no such variable for " dg-options 3 "-std=gnu++11 -g0 -fno-exceptions -fno-asynchronous-unwind-tables -march=i486" { target ia32 } "
ERROR: decimal/compound-assignment-memfunc.cc: can't read "et_cache(dfp,value)": no such element in array for " dg-require-effective-target 18 dfp "