On Mar 21, 2017, at 10:18 AM, Christophe Lyon <christophe.l...@linaro.org>
wrote:
>
> Since this was committed (r246319), I've noticed that
> GCC cross-compiler fails to build glibc for target aarch64-linux-gnu.
>
> I'm seeing:
> In function '_IO_vfscanf_internal':
> cc1: internal compiler error: in gimplify_modify_expr, at gimplify.c:5627
> 0x8ae5bf gimplify_modify_expr
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:5627
> 0x8902b4 gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11198
> 0x8963c8 gimplify_stmt(tree_node**, gimple**)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:6477
> 0x89bf55 gimplify_cond_expr
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:3971
> 0x890273 gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
> /tmp/1882393_6.tmpdir/aci-In function '_IO_vfscanf_internal':
> cc1: internal compiler error: in gimplify_modify_expr, at gimplify.c:5627
> 0x8ae5bf gimplify_modify_expr
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:5627
> 0x8902b4 gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11198
> 0x8963c8 gimplify_stmt(tree_node**, gimple**)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:6477
> 0x89bf55 gimplify_cond_expr
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:3971
> 0x890273 gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11154
> 0x8963c8 gimplify_stmt(tree_node**, gimple**)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:6477
> 0x89b803 gimplify_cond_expr
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:3864
> 0x890273 gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11154
> 0x89328f gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11356
> 0x8b49f9 force_gimple_operand_1(tree_node*, gimple**, bool
> (*)(tree_node*), tree_node*)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify-me.c:78
> 0xda0f16 expand_ifn_va_arg_1
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/tree-stdarg.c:1064
> 0xda0f16 expand_ifn_va_arg
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/tree-stdarg.c:1105
> 0xda494b execute
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/tree-stdarg.c:1158
> gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11154
> 0x8963c8 gimplify_stmt(tree_node**, gimple**)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:6477
> 0x89b803 gimplify_cond_expr
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:3864
> 0x890273 gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11154
> 0x89328f gimplify_expr(tree_node**, gimple**, gimple**, bool
> (*)(tree_node*), int)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify.c:11356
> 0x8b49f9 force_gimple_operand_1(tree_node*, gimple**, bool
> (*)(tree_node*), tree_node*)
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/gimplify-me.c:78
> 0xda0f16 expand_ifn_va_arg_1
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/tree-stdarg.c:1064
> 0xda0f16 expand_ifn_va_arg
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/tree-stdarg.c:1105
> 0xda494b execute
>
> /tmp/1882393_6.tmpdir/aci-gcc-fsf/sources/gcc-fsf/gccsrc/gcc/tree-stdarg.c:1158
>
>
> I can start a manual build if you need a .i file.
Yes, please! Please open a PR for tracking and CC me (wschm...@gcc.gnu.org);
I'll investigate.
Bill
>
> Thanks,
>
> Christophe
>
>> Thanks,
>> Richard.
>>
>>> Thanks,
>>> Bill
>>>
>>>
>>> [gcc]
>>>
>>> 2017-03-20 Bill Schmidt <wschm...@linux.vnet.ibm.com>
>>> Richard Biener <rgue...@suse.com>
>>>
>>> PR tree-optimization/79908
>>> * tree-stdarg.c (expand_ifn_va_arg_1): For a VA_ARG whose LHS has
>>> been cast away, use force_gimple_operand to construct the side
>>> effects.
>>>
>>> [gcc/testsuite]
>>>
>>> 2017-03-20 Bill Schmidt <wschm...@linux.vnet.ibm.com>
>>> Richard Biener <rguent...@suse.de>
>>>
>>> PR tree-optimization/79908
>>> * gcc.dg/torture/pr79908.c: New file.
>>>
>>>
>>> Index: gcc/testsuite/gcc.dg/torture/pr79908.c
>>> ===================================================================
>>> --- gcc/testsuite/gcc.dg/torture/pr79908.c (nonexistent)
>>> +++ gcc/testsuite/gcc.dg/torture/pr79908.c (working copy)
>>> @@ -0,0 +1,12 @@
>>> +/* { dg-do compile } */
>>> +
>>> +/* Used to fail in the stdarg pass before fix for PR79908. */
>>> +
>>> +typedef __builtin_va_list __gnuc_va_list;
>>> +typedef __gnuc_va_list va_list;
>>> +
>>> +void testva (int n, ...)
>>> +{
>>> + va_list ap;
>>> + _Complex int i = __builtin_va_arg (ap, _Complex int);
>>> +}
>>> Index: gcc/tree-stdarg.c
>>> ===================================================================
>>> --- gcc/tree-stdarg.c (revision 246286)
>>> +++ gcc/tree-stdarg.c (working copy)
>>> @@ -33,6 +33,7 @@ along with GCC; see the file COPYING3. If not see
>>> #include "gimple-iterator.h"
>>> #include "gimple-walk.h"
>>> #include "gimplify.h"
>>> +#include "gimplify-me.h"
>>> #include "tree-into-ssa.h"
>>> #include "tree-cfg.h"
>>> #include "tree-stdarg.h"
>>> @@ -1058,12 +1059,16 @@ expand_ifn_va_arg_1 (function *fun)
>>> gimplify_assign (lhs, expr, &pre);
>>> }
>>> else
>>> - gimplify_expr (&expr, &pre, &post, is_gimple_lvalue, fb_lvalue);
>>> + {
>>> + gimple_seq tmp_seq;
>>> + force_gimple_operand (expr, &tmp_seq, false, NULL_TREE);
>>> + gimple_seq_add_seq_without_update (&pre, tmp_seq);
>>> + }
>>>
>>> input_location = saved_location;
>>> pop_gimplify_context (NULL);
>>>
>>> - gimple_seq_add_seq (&pre, post);
>>> + gimple_seq_add_seq_without_update (&pre, post);
>>> update_modified_stmts (pre);
>>>
>>> /* Add the sequence after IFN_VA_ARG. This splits the bb right
>>> @@ -1072,11 +1077,10 @@ expand_ifn_va_arg_1 (function *fun)
>>> gimple_find_sub_bbs (pre, &i);
>>>
>>> /* Remove the IFN_VA_ARG gimple_call. It's the last stmt in the
>>> - bb. */
>>> + bb if we added any stmts. */
>>> unlink_stmt_vdef (stmt);
>>> release_ssa_name_fn (fun, gimple_vdef (stmt));
>>> gsi_remove (&i, true);
>>> - gcc_assert (gsi_end_p (i));
>>>
>>> /* We're walking here into the bbs which contain the expansion of
>>> IFN_VA_ARG, and will not contain another IFN_VA_ARG that needs
>>>
>
