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* [Bug c/15464] New: ICE: unable to find a register to spill in class `DREG' @ 2004-05-16 14:23 coyote at coyotegulch dot com 2004-05-16 14:26 ` [Bug c/15464] " coyote at coyotegulch dot com ` (2 more replies) 0 siblings, 3 replies; 4+ messages in thread From: coyote at coyotegulch dot com @ 2004-05-16 14:23 UTC (permalink / raw) To: gcc-bugs When compiling the attached program with gcc -c -std=gnu99 -O1 -march=pentium4 -fschedule-insns -funit-at-a-time -fno-inline bug_reg_spill.c GCC mainline (3.5.0 20040514) expresses an ICE: bug_reg_spill.c: In function `decode': bug_reg_spill.c:135: error: unable to find a register to spill in class `DREG' bug_reg_spill.c:135: error: this is the insn: (insn 52 51 53 14 (parallel [ (set (reg:SI 0 ax [95]) (udiv:SI (reg:SI 0 ax [93]) (reg/v:SI 4 si [orig:70 range ] [70]))) (set (reg:SI 96) (umod:SI (reg:SI 0 ax [93]) (reg/v:SI 4 si [orig:70 range ] [70]))) (clobber (reg:CC 17 flags)) ]) 190 {udivmodsi4} (insn_list 51 (insn_list 42 (nil))) (expr_list:REG_DEAD (reg:SI 0 ax [93]) (expr_list:REG_UNUSED (reg:CC 17 flags) (expr_list:REG_UNUSED (reg:SI 96) (nil))))) bug_reg_spill.c:135: confused by earlier errors, bailing out I believe this is different from bug 15318, but the causes might be similar. This ICE does not occur on my X86_64 system, or if the -march=pentium4 flag is removed from the compile command. -- Summary: ICE: unable to find a register to spill in class `DREG' Product: gcc Version: 3.5.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: coyote at coyotegulch dot com CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: i686-pc-linux GCC host triplet: i686-pc-linux GCC target triplet: i686-pc-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15464 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug c/15464] ICE: unable to find a register to spill in class `DREG' 2004-05-16 14:23 [Bug c/15464] New: ICE: unable to find a register to spill in class `DREG' coyote at coyotegulch dot com @ 2004-05-16 14:26 ` coyote at coyotegulch dot com 2004-05-16 18:42 ` [Bug rtl-optimization/15464] " pinskia at gcc dot gnu dot org 2004-08-15 3:12 ` pinskia at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: coyote at coyotegulch dot com @ 2004-05-16 14:26 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From coyote at coyotegulch dot com 2004-05-15 15:39 ------- Created an attachment (id=6302) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=6302&action=view) Testcase that demonstrates the bug I'll try to reduce this further later today. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15464 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/15464] ICE: unable to find a register to spill in class `DREG' 2004-05-16 14:23 [Bug c/15464] New: ICE: unable to find a register to spill in class `DREG' coyote at coyotegulch dot com 2004-05-16 14:26 ` [Bug c/15464] " coyote at coyotegulch dot com @ 2004-05-16 18:42 ` pinskia at gcc dot gnu dot org 2004-08-15 3:12 ` pinskia at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-05-16 18:42 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-05-15 16:17 ------- Confirmed, known problem in x86, -fschedule-insns schedule instructions before register allocation which is known to ICE on x86. -- What |Removed |Added ---------------------------------------------------------------------------- BugsThisDependsOn| |9085 Status|UNCONFIRMED |NEW Component|c |rtl-optimization Ever Confirmed| |1 Keywords| |ice-on-valid-code Last reconfirmed|0000-00-00 00:00:00 |2004-05-15 16:17:49 date| | http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15464 ^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug rtl-optimization/15464] ICE: unable to find a register to spill in class `DREG' 2004-05-16 14:23 [Bug c/15464] New: ICE: unable to find a register to spill in class `DREG' coyote at coyotegulch dot com 2004-05-16 14:26 ` [Bug c/15464] " coyote at coyotegulch dot com 2004-05-16 18:42 ` [Bug rtl-optimization/15464] " pinskia at gcc dot gnu dot org @ 2004-08-15 3:12 ` pinskia at gcc dot gnu dot org 2 siblings, 0 replies; 4+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-08-15 3:12 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-08-15 03:12 ------- Fixed. : Search converges between 2004-07-06-trunk (#480) and 2004-07-07-trunk (#481). -- What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED Target Milestone|--- |3.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15464 ^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2004-08-15 3:12 UTC | newest] Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-05-16 14:23 [Bug c/15464] New: ICE: unable to find a register to spill in class `DREG' coyote at coyotegulch dot com 2004-05-16 14:26 ` [Bug c/15464] " coyote at coyotegulch dot com 2004-05-16 18:42 ` [Bug rtl-optimization/15464] " pinskia at gcc dot gnu dot org 2004-08-15 3:12 ` pinskia at gcc dot gnu dot org
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