Regressions on trunk at revision 238665 vs revision 238662

[H.J. Lu Intel64 Core i7]

New failures:
ERROR: gcc.dg/atomic/pr71675.c   -O0 : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O0 : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O1 : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O1 : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O2 : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O2 : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O3 -fomit-frame-pointer -funroll-loops -fpeel-loops -ftracer -finline-functions : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O3 -g : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -O3 -g : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -Os : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "
ERROR: gcc.dg/atomic/pr71675.c   -Os : syntax error in target selector "target c11" for " dg-do 3 compile { target c11 } "

New passes: