[Bug c/104209] New: ICE in lra_split_hard_reg_for, at lra-assigns.cc:1837

[Bug c/104209] New: ICE in lra_split_hard_reg_for, at lra-assigns.cc:1837

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

            Bug ID: 104209
           Summary: ICE in lra_split_hard_reg_for, at lra-assigns.cc:1837
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

With file gcc.dg/torture/pr20314-2.c, 
affects versions down to at least r5 :


$ gcc-12-20220123 -c pr20314-2.c -m32 -fPIC
pr20314-2.c: In function 'f1':
pr20314-2.c:5:3: error: 'asm' operand has impossible constraints
    5 |   __asm__ volatile (""
      |   ^~~~~~~
pr20314-2.c:9:1: error: unable to find a register to spill
    9 | }
      | ^
pr20314-2.c:9:1: error: this is the insn:
(insn 96 94 98 2 (set (reg:SI 151 [123])
        (reg:SI 123)) "pr20314-2.c":5:3 81 {*movsi_internal}
     (expr_list:REG_DEAD (reg:SI 123)
        (nil)))
during RTL pass: reload
pr20314-2.c:9:1: internal compiler error: in lra_split_hard_reg_for, at
lra-assigns.cc:1837
0x685898 _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
        ../../gcc/rtl-error.cc:108
0xc1f9e1 lra_split_hard_reg_for()
        ../../gcc/lra-assigns.cc:1837
0xc19c5b lra(_IO_FILE*)
        ../../gcc/lra.cc:2420
0xbc7b39 do_reload
        ../../gcc/ira.cc:5940
0xbc7b39 execute
        ../../gcc/ira.cc:6126

[Bug rtl-optimization/104209] [9/10/11/12 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|testsuite-fail              |
             Status|UNCONFIRMED                 |NEW
      Known to fail|                            |5.1.0
   Last reconfirmed|                            |2022-01-24
     Ever confirmed|0                           |1
            Summary|gcc.dg/torture/pr20314-2.c  |[9/10/11/12 Regression]
                   |ICE with -m32 -fPIC in      |gcc.dg/torture/pr20314-2.c
                   |lra_split_hard_reg_for      |ICE with -m32 -fPIC in
                   |                            |lra_split_hard_reg_for
      Known to work|                            |4.9.4

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed, 4.9.4 did not ICE.

[Bug rtl-optimization/104209] [9/10/11/12 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Here is the testcase:
int a, b, c, d, e, f, g, h, i, j, k, l;

void
f1 (void)
{
  __asm__ volatile (""
                    : [a] "+r" (a), [b] "+r" (b), [c] "+r" (c), [d] "+r" (d),
                      [e] "+r" (e), [f] "+r" (f), [g] "+r" (g), [h] "+r" (h),
                      [i] "+r" (i), [j] "+r" (j), [k] "+r" (k), [l] "+r" (l));
}

[Bug rtl-optimization/104209] [9/10/11/12 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |9.5

[Bug rtl-optimization/104209] [9/10/11/12 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |marxin at gcc dot gnu.org

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
I think it started with r5-4065-gbcb21886b9ea0c38.

[Bug rtl-optimization/104209] [9/10/11/12 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4

[Bug rtl-optimization/104209] [10/11/12/13 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|9.5                         |10.4

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 9 branch is being closed

[Bug rtl-optimization/104209] [10/11/12/13 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.4                        |10.5

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
GCC 10.4 is being released, retargeting bugs to GCC 10.5.

[Bug rtl-optimization/104209] [11/12/13/14 Regression] gcc.dg/torture/pr20314-2.c ICE with -m32 -fPIC in lra_split_hard_reg_for

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104209

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|10.5                        |11.5

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
GCC 10 branch is being closed.