Hello,
I tried to compile LTO kernel with latest gcc, applied patch by
Jan http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57334#c6:
lto1: internal compiler error: in lto_symtab_prevailing_decl, at
lto-symtab.c:644
0x783c63 lto_symtab_prevailing_decl(tree_node*)
../../gcc/lto-symtab.c:644
0x50afe4 lto_fixup_prevailing_decls
../../gcc/lto/lto.c:3220
0x50afe4 lto_fixup_decls
../../gcc/lto/lto.c:3284
0x50afe4 read_cgraph_and_symbols
../../gcc/lto/lto.c:3490
0x50afe4 lto_main()
../../gcc/lto/lto.c:3834
I commented gcc_checking_assert in Jan's patch and compilation was
'almost' successful:
+ sortextable vmlinux
+ /home/marxin/Programming/linux-andikleen/scripts/sortextable vmlinux
Error:
no main_extable_sort_needed symbol in file: vmlinux
Both vmlinux1 and vmlinux2 were linker without any problem.
ld --version
GNU ld (Linux/GNU Binutils) 2.23.51.0.9.20130118
Build was done with Andi's kernel config and lto-3.9 branch of git repository.
Thanks,
Martin
On 17 June 2013 19:51, Andi Kleen <a...@firstfloor.org> wrote:
>
> Current trunk cannot build LTO kernels now, with your patch,
> as reported earlier.
>
> Please fix ASAP. I'm surprised that you checked in a patchkit
> with such serious reported problems.
>
> -Andi
>
>
> backup/lsrc/git/linux-lto-2.6/lib/decompress_unlzo.c: In function 'unlzo':
> /backup/lsrc/git/linux-lto-2.6/lib/decompress_unlzo.c:79:8: internal compiler
> error: in expand_expr_real_1, at expr.c:9361
> parse += 7;
> ^
> 0x5ea175 expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
> expand_modifier, rtx_def**)
> ../../gcc/gcc/expr.c:9356
> 0x53fe49 expand_expr
> ../../gcc/gcc/expr.h:444
> 0x53fe49 expand_gimple_stmt_1
> ../../gcc/gcc/cfgexpand.c:2283
> 0x53fe49 expand_gimple_stmt
> ../../gcc/gcc/cfgexpand.c:2370
> 0x5408a8 expand_gimple_basic_block
> ../../gcc/gcc/cfgexpand.c:4204
> 0x542996 gimple_expand_cfg
> ../../gcc/gcc/cfgexpand.c:4723
> Please submit a full bug report,
> with preprocessed source if appropriate.
> Please include the complete backtrace with any bug report.
> See <http://gcc.gnu.org/bugs.html> for instructions.
> make[3]: *** [/home/ak/lsrc/git/obj-lto/ccUSzSrf.ltrans18.ltrans.o] Error 1
>
>
>
>
>
>
>
> --
> a...@linux.intel.com -- Speaking for myself only.
