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[Bug rtl-optimization/24683] [3.4/4.0/4.1 Regression] ICE in in extract_insn, at recog.c:2084
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Nov 2005 16:55:53 -0000
- Subject: [Bug rtl-optimization/24683] [3.4/4.0/4.1 Regression] ICE in in extract_insn, at recog.c:2084
- References: <bug-24683-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #12 from steven at gcc dot gnu dot org 2005-11-05 16:55 -------
Breakpoint 4, emit_move_insn (x=0x2a95a69320, y=0x2a9594c820) at expr.c:3140
3140 enum machine_mode mode = GET_MODE (x);
(gdb) p debug_rtx(x)
(reg:DI 68)
$10 = void
(gdb) p debug_rtx(y)
(const:DI (plus:DI (symbol_ref/f:DI ("*.LC0") [flags 0x2] <string_cst
0x2a95a62510>)
(const_int 4294967233 [0xffffffc1])))
$11 = void
(gdb) bt
#0 emit_move_insn (x=0x2a95a69320, y=0x2a9594c820) at expr.c:3140
#1 0x0000000000a6e5a9 in move_movables (loop=0xe72f80, movables=0xe766d8,
threshold=93,
insn_count=9) at loop.c:2365
#2 0x0000000000a6c59a in scan_loop (loop=0xe72f80, flags=0) at loop.c:1522
#3 0x0000000000a6a1a1 in loop_optimize (f=0x2a9589b940, dumpfile=0x0, flags=0)
at loop.c:909
#4 0x0000000000a81e30 in rest_of_handle_loop_optimize () at loop.c:11784
#5 0x0000000000946f77 in execute_one_pass (pass=0xd9ae80) at passes.c:827
A bit further down:
3185 last_insn = emit_move_insn_1 (x, y);
(gdb) disab 4
(gdb) next
3187 if (y_cst && REG_P (x)
(gdb) p debug_rtx(last_insn)
(insn 60 59 0 (set (reg:DI 68)
(plus:DI (reg/f:DI 69)
(const_int 4294967233 [0xffffffc1]))) -1 (nil)
(nil))
$12 = void
(gdb) p recog_memoized (last_insn)
$13 = -1
(gdb) next
3191 set_unique_reg_note (last_insn, REG_EQUAL, y_cst);
(gdb)
3193 return last_insn;
(gdb)
3194 }
So there's your wrong instruction, produced by emit_move_insn itself... :-(
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24683