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* [Bug inline-asm/99015] New: ICE: Max. number of generated reload insns per insn is achieved (90)
@ 2021-02-09  1:32 zhan3299 at purdue dot edu
  2021-02-12 19:14 ` [Bug inline-asm/99015] " zhan3299 at purdue dot edu
                   ` (7 more replies)
  0 siblings, 8 replies; 9+ messages in thread
From: zhan3299 at purdue dot edu @ 2021-02-09  1:32 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99015

            Bug ID: 99015
           Summary: ICE: Max. number of generated reload insns per insn is
                    achieved (90)
           Product: gcc
           Version: 10.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: inline-asm
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zhan3299 at purdue dot edu
  Target Milestone: ---

Another inline-asm issue causes an ICE.

--- poc.c starts ---
int main() {
    asm("" : : "fq"(.100));
}
--- poc.c ends ---

The version of GCC is 10.2.0 x86-64, and running 'gcc -O1 poc.c ' can trigger
the ICE.

--- error trace starts ---
$ gcc -O1 poc.c
during RTL pass: reload
test.c: In function ‘main’:
test.c:3:1: internal compiler error: maximum number of generated reload insns
per insn achieved (90)
    3 | }
      | ^
0x9fb0c0 lra_constraints(bool)
        ../../gcc/gcc/lra-constraints.c:4952
0x9e9314 lra(_IO_FILE*)
        ../../gcc/gcc/lra.c:2440
0x9a7201 do_reload
        ../../gcc/gcc/ira.c:5523
0x9a7201 execute
        ../../gcc/gcc/ira.c:5709
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
--- error trace ends ---


This issue only occurs when compiling with -O1 and higher, but does not with
-O0.

I also test other versions of GCC. It seems to affect GCC version 8.1 and
higher, but not version 7.5 and lower.


This issue may be similar with
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98991. However, as #98991
additionally affects GCC version 7.5 and lower, I suspect they are different.

^ permalink raw reply	[flat|nested] 9+ messages in thread
end of thread, other threads:[~2024-05-08 11:45 UTC | newest]

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-09  1:32 [Bug inline-asm/99015] New: ICE: Max. number of generated reload insns per insn is achieved (90) zhan3299 at purdue dot edu
2021-02-12 19:14 ` [Bug inline-asm/99015] " zhan3299 at purdue dot edu
2021-09-14  7:17 ` [Bug rtl-optimization/99015] [9/10/11/12 Regression] " pinskia at gcc dot gnu.org
2022-01-21 13:18 ` rguenth at gcc dot gnu.org
2022-05-27  9:44 ` [Bug rtl-optimization/99015] [10/11/12/13 " rguenth at gcc dot gnu.org
2022-06-28 10:43 ` jakub at gcc dot gnu.org
2023-07-07 10:39 ` [Bug rtl-optimization/99015] [11/12/13/14 " rguenth at gcc dot gnu.org
2024-03-11  2:43 ` [Bug rtl-optimization/99015] [11/12/13 " law at gcc dot gnu.org
2024-05-08 11:45 ` rguenth at gcc dot gnu.org

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