Re: [PATCH v2, middle-end]: Introduce memory_blockage named insn pattern

[David Edelsohn <dje.gcc@gmail.com>]

On Sat, Oct 14, 2017 at 11:44 AM, David Edelsohn <dje.gcc@gmail.com> wrote:
> This patch has broken bootstrap on AIX and possibly powerpc64-linux.
> Was this patch tested on any architecture other than x86?
>
> /nasfarm/edelsohn/src/src/libgcc/emutls.c: In function '__emutls_get_address':
> /nasfarm/edelsohn/src/src/libgcc/emutls.c:139:11: internal compiler
> error: in invalid_void, at config/rs6000/rs6000.md:10804
>    pointer offset = __atomic_load_n (&obj->loc.offset, __ATOMIC_ACQUIRE);
>            ^~~~~~

Same failure on powerpc64-linux using the GNU Compile Farm

during RTL pass: expand
/home/dje/src/src/libgcc/emutls.c: In function ‘__emutls_get_address’:
/home/dje/src/src/libgcc/emutls.c:139:11: internal compiler error: in
invalid_void, at config/rs6000/rs6000.md:10804
   pointer offset = __atomic_load_n (&obj->loc.offset, __ATOMIC_ACQUIRE);
           ^~~~~~

0x11401a13 invalid_void
/home/dje/src/src/gcc/config/rs6000/rs6000.md:10804
0x10c22263 expand_memory_blockage
/home/dje/src/src/gcc/optabs.c:6301
0x10c225cb expand_atomic_load(rtx_def*, rtx_def*, memmodel)
/home/dje/src/src/gcc/optabs.c:6365
0x1056a14b expand_builtin_atomic_load
/home/dje/src/src/gcc/builtins.c:5951
0x1056fd87 expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
/home/dje/src/src/gcc/builtins.c:7280
0x107ecf9f expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/dje/src/src/gcc/expr.c:10866
0x107de5c7 expand_expr_real(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
/home/dje/src/src/gcc/expr.c:8084
0x107d2d9b store_expr_with_bounds(tree_node*, rtx_def*, int, bool,
bool, tree_node*)
/home/dje/src/src/gcc/expr.c:5554
0x107d14e3 expand_assignment(tree_node*, tree_node*, bool)
/home/dje/src/src/gcc/expr.c:5319
0x105bb9c3 expand_call_stmt
/home/dje/src/src/gcc/cfgexpand.c:2664
0x105bf95b expand_gimple_stmt_1
/home/dje/src/src/gcc/cfgexpand.c:3585
0x105c025b expand_gimple_stmt
/home/dje/src/src/gcc/cfgexpand.c:3751
0x105c9dbf expand_gimple_basic_block
/home/dje/src/src/gcc/cfgexpand.c:5754
0x105cbf73 execute
/home/dje/src/src/gcc/cfgexpand.c:6361
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
make: *** [emutls.o] Error 1