https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111600
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://gcc.gnu.org/bugzill
| |a/show_bug.cgi?id=111622
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Compiling insn-opinit.ii with a cross compiler at -O2 shows (checking enabled
but -fno-checking)
scheduling : 34.48 ( 47%) 0.01 ( 1%) 34.50 ( 46%)
7576k ( 1%)
I don't run into the stack space issue with using the cross, but GCC tries
to up the stack limit and appearantly qemu doesn't implement that. With
a hard limit of 8MB (our default soft limit) I hit the recursion issue
also with a cross.
The backtrace is
Program received signal SIGSEGV, Segmentation fault.
0x0000000001808aff in range_query::get_tree_range (this=this@entry=0x5f540f0,
r=..., expr=expr@entry=<integer_cst 0x7fffeecd7780>, stmt=<optimized out>) at
/space/rguenther/src/gcc/gcc/value-query.cc:163
163 i.set (TREE_TYPE (expr), w, w);
(gdb) bt
#0 0x0000000001808aff in range_query::get_tree_range
(this=this@entry=0x5f540f0, r=...,
expr=expr@entry=<integer_cst 0x7fffeecd7780>, stmt=<optimized out>) at
/space/rguenther/src/gcc/gcc/value-query.cc:163
#1 0x000000000273f7c6 in gimple_ranger::range_of_expr (this=0x5f540f0, r=...,
expr=<integer_cst 0x7fffeecd7780>,
stmt=<optimized out>) at /space/rguenther/src/gcc/gcc/gimple-range.cc:86
#2 0x00000000016dd2ce in get_range (val=val@entry=<integer_cst
0x7fffeecd7780>, stmt=<optimized out>,
minmax=minmax@entry=0x7fffff7ff9b0, rvals=<optimized out>) at
/space/rguenther/src/gcc/gcc/tree-ssa-strlen.cc:219
#3 0x0000000001358656 in get_offset_range (x=<integer_cst 0x7fffeecd7780>,
stmt=stmt@entry=<gimple_assign 0x7fffe9c22e10>, r=r@entry=0x7fffff7ffaf0,
rvals=<optimized out>)
at /space/rguenther/src/gcc/gcc/pointer-query.cc:93
#4 0x000000000135bd53 in handle_mem_ref (qry=0x41938e8, snlim=...,
pref=0x7fffff7ffd90, ostype=<optimized out>,
stmt=<gimple_assign 0x7fffe9c22e10>, mref=<mem_ref 0x7fffef391578>)
at /space/rguenther/src/gcc/gcc/pointer-query.cc:1995
#5 compute_objsize_r (ptr=<mem_ref 0x7fffef391578>, stmt=<gimple_assign
0x7fffe9c22e10>, addr=addr@entry=false,
ostype=ostype@entry=0, pref=pref@entry=0x7fffff7ffd90, snlim=...,
qry=0x41938e8)
at /space/rguenther/src/gcc/gcc/pointer-query.cc:2262
#6 0x000000000136022a in compute_objsize (ptr=<optimized out>,
stmt=stmt@entry=<gimple_assign 0x7fffe9c22e10>,
ostype=ostype@entry=0, pref=0x7fffff7ffd90, ptr_qry=<optimized out>,
ptr_qry@entry=0x41938e8)
at /space/rguenther/src/gcc/gcc/pointer-query.cc:2368
#7 0x00000000013603f6 in pointer_query::get_ref (this=this@entry=0x41938e8,
ptr=ptr@entry=<mem_ref 0x7fffef391578>,
stmt=stmt@entry=<gimple_assign 0x7fffe9c22e10>,
pref=pref@entry=0x7fffff7ffd90, ostype=ostype@entry=0)
at /space/rguenther/src/gcc/gcc/pointer-query.cc:1516
#8 0x00000000010d8a6d in (anonymous
namespace)::pass_waccess::check_dangling_stores (this=this@entry=0x4193890,
bb=<basic_block 0x7fffe7bc6900 (21227)>, stores=..., bbs=...)
at /space/rguenther/src/gcc/gcc/gimple-ssa-warn-access.cc:4561
...
#18067 0x00000000010e1303 in (anonymous
namespace)::pass_waccess::check_dangling_stores (this=0x4193890)
at /space/rguenther/src/gcc/gcc/gimple-ssa-warn-access.cc:4640
4640 check_dangling_stores (EXIT_BLOCK_PTR_FOR_FN (m_func), stores, bbs);
I'll fix that.
I also see insn-emit.cc compile (of the cross compiler) requiring 8GB of memory
and multiple minutes (with a GCC 7 host compiler).
