Re: Implement C11 _Atomic

[dominiq@lps.ens.fr (Dominique Dhumieres)]

The tests introduced in revision 204544 fail with -m32
(see http://gcc.gnu.org/ml/gcc-regression/2013-11/msg00213.html
or http://gcc.gnu.org/ml/gcc-testresults/2013-11/msg00526.html ).
This revision may also causes the failures of
gfortran.dg/typebound_operator_9.f03 and 
FAIL: gfortran.fortran-torture/execute/forall_1.f90.

On x86_64-apple-darwin* typebound_operator_9.f03 gives the following ICE with -O3

/opt/gcc/work/gcc/testsuite/gfortran.dg/typebound_operator_9.f03: In function 'nabla2_cart2d':
/opt/gcc/work/gcc/testsuite/gfortran.dg/typebound_operator_9.f03:272:0: internal compiler error: tree check: expected integer_cst, have plus_expr in tree_int_cst_lt, at tree.c:7083
   function nabla2_cart2d (obj)

and the failures of c11-atomic-exec-*.exe are of the kind

Executing on host: /opt/gcc/build_w/gcc/xgcc -B/opt/gcc/build_w/gcc/ /opt/gcc/work/gcc/testsuite/gcc.dg/atomic/c11-atomic-exec-4.c   -B/opt/gcc/build_w/x86_64-apple-darwin13.0.0/i386/libatomic/  -L/opt/gcc/build_w/x86_64-apple-darwin13.0.0/i386/libatomic/.libs -latomic  -fno-diagnostics-show-caret -fdiagnostics-color=never   -Os  -std=c11 -pedantic-errors -pthread -D_POSIX_C_SOURCE=200809L  -lm   -m32 -o ./c11-atomic-exec-4.exe    (timeout = 300)
spawn /opt/gcc/build_w/gcc/xgcc -B/opt/gcc/build_w/gcc/ /opt/gcc/work/gcc/testsuite/gcc.dg/atomic/c11-atomic-exec-4.c -B/opt/gcc/build_w/x86_64-apple-darwin13.0.0/i386/libatomic/ -L/opt/gcc/build_w/x86_64-apple-darwin13.0.0/i386/libatomic/.libs -latomic -fno-diagnostics-show-caret -fdiagnostics-color=never -Os -std=c11 -pedantic-errors -pthread -D_POSIX_C_SOURCE=200809L -lm -m32 -o ./c11-atomic-exec-4.exe
Undefined symbols for architecture i386:
  "___atomic_compare_exchange_16", referenced from:
      _test_main_long_double_add in ccBbKO9A.o
      _test_thread_long_double_add in ccBbKO9A.o
      _test_main_complex_double_add in ccBbKO9A.o
      _test_thread_complex_double_add in ccBbKO9A.o
      _test_main_long_double_postinc in ccBbKO9A.o
      _test_thread_long_double_postinc in ccBbKO9A.o
      _test_main_long_double_preinc in ccBbKO9A.o
      ...^M
  "___atomic_load_16", referenced from:
      _test_main_long_double_add in ccBbKO9A.o
      _test_thread_long_double_add in ccBbKO9A.o
      _test_main_complex_double_add in ccBbKO9A.o
      _test_thread_complex_double_add in ccBbKO9A.o
      _test_main_long_double_postinc in ccBbKO9A.o
      _test_thread_long_double_postinc in ccBbKO9A.o
      _test_main_long_double_preinc in ccBbKO9A.o
      ...^M
ld: symbol(s) not found for architecture i386

Dominique