https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68467
Joseph S. Myers <jsm28 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-11-07
Component|libgcc |target
Summary|libgcc, compilation for |libgcc, compilation for
|target m68k-linux breaks in |target m68k-linux breaks in
|linux_atomic.c, #define |linux_atomic.c
|COMMA , |
Ever confirmed|0 |1
--- Comment #3 from Joseph S. Myers <jsm28 at gcc dot gnu.org> ---
Confirmed. Building libgcc for m68k-linux-gnu --with-arch=cf fails for every
GCC version from 4.7 onwards (4.6 didn't have linux-atomic.c, so I'm not sure
if this counts as a regression).
Errors with current mainline:
/scratch/jmyers/glibc/many7/src/gcc/libgcc/config/m68k/linux-atomic.c: In
function '__sync_bool_compare_and_swap_1':
/scratch/jmyers/glibc/many7/src/gcc/libgcc/config/m68k/linux-atomic.c:197:13:
internal compiler error: in emit_library_call_value_1, at calls.c:4624
return (__sync_val_compare_and_swap_##WIDTH (ptr, oldval, newval) \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/scratch/jmyers/glibc/many7/src/gcc/libgcc/config/m68k/linux-atomic.c:202:1:
note: in expansion of macro 'SUBWORD_BOOL_CAS'
SUBWORD_BOOL_CAS (unsigned char, 1)
^~~~~~~~~~~~~~~~
0x6a7dc7 emit_library_call_value_1
/scratch/jmyers/glibc/many7/src/gcc/gcc/calls.c:4623
0x6acb5f emit_library_call_value(rtx_def*, rtx_def*, libcall_type,
machine_mode, int, ...)
/scratch/jmyers/glibc/many7/src/gcc/gcc/calls.c:4817
0x9e576e expand_atomic_compare_and_swap(rtx_def**, rtx_def**, rtx_def*,
rtx_def*, rtx_def*, bool, memmodel, memmodel)
/scratch/jmyers/glibc/many7/src/gcc/gcc/optabs.c:6210
0x690b1b expand_builtin_compare_and_swap
/scratch/jmyers/glibc/many7/src/gcc/gcc/builtins.c:5059
0x69db77 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
/scratch/jmyers/glibc/many7/src/gcc/gcc/builtins.c:6606
0x7bdd4d expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/scratch/jmyers/glibc/many7/src/gcc/gcc/expr.c:10773
0x7c8e4f store_expr_with_bounds(tree_node*, rtx_def*, int, bool, bool,
tree_node*)
/scratch/jmyers/glibc/many7/src/gcc/gcc/expr.c:5548
0x7ca790 expand_assignment(tree_node*, tree_node*, bool)
/scratch/jmyers/glibc/many7/src/gcc/gcc/expr.c:5317
0x6bb4ba expand_call_stmt
/scratch/jmyers/glibc/many7/src/gcc/gcc/cfgexpand.c:2666
0x6bb4ba expand_gimple_stmt_1
/scratch/jmyers/glibc/many7/src/gcc/gcc/cfgexpand.c:3581
0x6bb4ba expand_gimple_stmt
/scratch/jmyers/glibc/many7/src/gcc/gcc/cfgexpand.c:3747
0x6bd28e expand_gimple_basic_block
/scratch/jmyers/glibc/many7/src/gcc/gcc/cfgexpand.c:5754
0x6c3176 execute
/scratch/jmyers/glibc/many7/src/gcc/gcc/cfgexpand.c:6368
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