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From: "amonakov at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106943] GCC building clang/llvm with LTO flags causes ICE
 in clang
Date: Thu, 11 May 2023 12:49:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106943

Alexander Monakov <amonakov at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |amonakov at gcc dot gnu.org

--- Comment #6 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
I'm giving this a shot, and with -flto-partition=3D1to1 there's a ranger ICE
(below).

What's the current best practice for LTO debugging? I don't imagine there's=
 an
easy way to identify which of 2000 lto1 invocation crashes, or attach gdb to
it? Or at least generate a corefile?

0x10308fd internal_error(char const*, ...)
        ???:0
0x13dcf8c operator_bitwise_not::fold_range(irange&, tree_node*, irange cons=
t&,
irange const&, tree_code) const
        ???:0
0x136882a fold_using_range::range_of_range_op(irange&, gimple*, fur_source&)
        ???:0
0x1323eb5 fold_using_range::fold_stmt(irange&, gimple*, fur_source&,
tree_node*)
        ???:0
0x134a417 path_range_query::range_of_stmt(irange&, gimple*, tree_node*)
        ???:0
0x13499b4 path_range_query::range_defined_in_block(irange&, tree_node*,
basic_block_def*)
        ???:0
0x135503a path_range_query::internal_range_of_expr(irange&, tree_node*,
gimple*)
        ???:0
0x1368424 fold_using_range::range_of_range_op(irange&, gimple*, fur_source&)
        ???:0
0x1323eb5 fold_using_range::fold_stmt(irange&, gimple*, fur_source&,
tree_node*)
        ???:0
0x134a417 path_range_query::range_of_stmt(irange&, gimple*, tree_node*)
        ???:0
0x13499b4 path_range_query::range_defined_in_block(irange&, tree_node*,
basic_block_def*)
        ???:0
0x135503a path_range_query::internal_range_of_expr(irange&, tree_node*,
gimple*)
        ???:0
0x1368424 fold_using_range::range_of_range_op(irange&, gimple*, fur_source&)
        ???:0
0x1323eb5 fold_using_range::fold_stmt(irange&, gimple*, fur_source&,
tree_node*)
        ???:0
0x134a417 path_range_query::range_of_stmt(irange&, gimple*, tree_node*)
        ???:0
0x13499b4 path_range_query::range_defined_in_block(irange&, tree_node*,
basic_block_def*)
        ???:0
0x135503a path_range_query::internal_range_of_expr(irange&, tree_node*,
gimple*)
        ???:0
0x1368424 fold_using_range::range_of_range_op(irange&, gimple*, fur_source&)
        ???:0
0x1323eb5 fold_using_range::fold_stmt(irange&, gimple*, fur_source&,
tree_node*)
        ???:0
0x134a417 path_range_query::range_of_stmt(irange&, gimple*, tree_node*)
        ???:0=