https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70110
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |i?86-*-*
Status|UNCONFIRMED |NEW
Last reconfirmed| |2016-03-06
Component|rtl-optimization |target
CC| |ienkovich at gcc dot gnu.org
Ever confirmed|0 |1
Summary|ICE at -O3 in the 32-bit |[6 Regression] ICE at -O3
|mode in set_last_insn, at |in the 32-bit mode in
|emit-rtl.h:420 |set_last_insn, at
| |emit-rtl.h:420
Target Milestone|--- |6.0
--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Confirmed, a TARGET_STV problem. -O3 -msse2 flags are needed.
(gdb) bt
#0 internal_error (gmsgid=0x1f308b7 "in %s, at %s:%d") at
/home/uros/gcc-svn/trunk/gcc/diagnostic.c:1256
#1 0x00000000018241b0 in fancy_abort (file=0x1913f78
"/home/uros/gcc-svn/trunk/gcc/emit-rtl.h", line=420,
function=0x1915290 <_ZZL13set_last_insnP8rtx_insnE12__FUNCTION__>
"set_last_insn") at /home/uros/gcc-svn/trunk/gcc/diagnostic.c:1329
#2 0x00000000009a18d0 in set_last_insn (insn=0x7fffef9d2a00) at
/home/uros/gcc-svn/trunk/gcc/emit-rtl.h:420
#3 0x00000000009ac4b1 in end_sequence () at
/home/uros/gcc-svn/trunk/gcc/emit-rtl.c:5442
#4 0x000000000119806a in scalar_chain::make_vector_copies
(this=0x7fffffffd8f0, regno=96) at
/home/uros/gcc-svn/trunk/gcc/config/i386/i386.c:3276
#5 0x0000000001198c96 in scalar_chain::convert (this=0x7fffffffd8f0) at
/home/uros/gcc-svn/trunk/gcc/config/i386/i386.c:3512
#6 0x0000000001198f47 in convert_scalars_to_vector () at
/home/uros/gcc-svn/trunk/gcc/config/i386/i386.c:3577
#7 0x0000000001199159 in (anonymous namespace)::pass_stv::execute
(this=0x2570ff0) at /home/uros/gcc-svn/trunk/gcc/config/i386/i386.c:3669
#8 0x0000000000ce0362 in execute_one_pass (pass=0x2570ff0) at
/home/uros/gcc-svn/trunk/gcc/passes.c:2336
#9 0x0000000000ce066a in execute_pass_list_1 (pass=0x2570ff0) at
/home/uros/gcc-svn/trunk/gcc/passes.c:2410
#10 0x0000000000ce069b in execute_pass_list_1 (pass=0x2560740) at
/home/uros/gcc-svn/trunk/gcc/passes.c:2411
#11 0x0000000000ce06f3 in execute_pass_list (fn=0x7fffef970930, pass=0x255d1a0)
at /home/uros/gcc-svn/trunk/gcc/passes.c:2421
#12 0x00000000008f06be in cgraph_node::expand (this=0x7fffef9962e0) at
/home/uros/gcc-svn/trunk/gcc/cgraphunit.c:1980
#13 0x00000000008f0cf4 in expand_all_functions () at
/home/uros/gcc-svn/trunk/gcc/cgraphunit.c:2116
#14 0x00000000008f180d in symbol_table::compile (this=0x7fffef8730a8) at
/home/uros/gcc-svn/trunk/gcc/cgraphunit.c:2472
#15 0x00000000008f1a3e in symbol_table::finalize_compilation_unit
(this=0x7fffef8730a8) at /home/uros/gcc-svn/trunk/gcc/cgraphunit.c:2562
#16 0x0000000000df3bc3 in compile_file () at
/home/uros/gcc-svn/trunk/gcc/toplev.c:490
#17 0x0000000000df60e3 in do_compile () at
/home/uros/gcc-svn/trunk/gcc/toplev.c:1988
#18 0x0000000000df6368 in toplev::main (this=0x7fffffffdba0, argc=5,
argv=0x7fffffffdca8) at /home/uros/gcc-svn/trunk/gcc/toplev.c:2096
#19 0x000000000180b0e8 in main (argc=5, argv=0x7fffffffdca8) at
/home/uros/gcc-svn/trunk/gcc/main.c:39
(gdb) f 2
#2 0x00000000009a18d0 in set_last_insn (insn=0x7fffef9d2a00) at
/home/uros/gcc-svn/trunk/gcc/emit-rtl.h:420
420 gcc_checking_assert (!insn || !NEXT_INSN (insn));
(gdb) list
415 /* Specify a new insn as the last in the chain. */
416
417 static inline void
418 set_last_insn (rtx_insn *insn)
419 {
420 gcc_checking_assert (!insn || !NEXT_INSN (insn));
421 get_current_sequence ()->last = insn;
422 }
423
424 /* Return a number larger than any instruction's uid in this function.
*/
(gdb) p debug_rtx (insn)
(insn 69 68 145 11 (parallel [
(set (reg:DI 96 [ prephitmp_27 ])
(sign_extend:DI (reg:SI 104 [ c ])))
(clobber (reg:CC 17 flags))
(clobber (scratch:SI))
]) 146 {extendsidi2_1}
(expr_list:REG_DEAD (reg:SI 104 [ c ])
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil))))
$1 = void
(gdb) p debug_rtx (NEXT_INSN(insn))
(insn 145 69 146 11 (set (mem/c:SI (plus:SI (reg/f:SI 20 frame)
(const_int -8 [0xfffffffffffffff8])) [0 S4 A64])
(subreg:SI (reg:DI 96 [ prephitmp_27 ]) 0)) -1
(nil))
$2 = void
CC'd author.
