https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92213
Bug ID: 92213
Summary: internal compiler error: in lra_assign, at
lra-assigns.c:1647
Product: gcc
Version: 10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: vmakarov at redhat dot com
Target Milestone: ---
When enabling mask register spill with:
@@ -21452,6 +21442,13 @@ ix86_get_mask_mode (poly_uint64 nunits, poly_uint64
vector_size)
static reg_class_t
ix86_spill_class (reg_class_t rclass, machine_mode mode)
{
+ if (TARGET_AVX512BW
+ && (mode == QImode
+ || mode == HImode
+ || mode == SImode
+ || (TARGET_64BIT && mode == DImode))
+ && MAYBE_INTEGER_CLASS_P (rclass))
+ return ALL_MASK_REGS;
if (0 && TARGET_GENERAL_REGS_SSE_SPILL
&& TARGET_SSE2
&& TARGET_INTER_UNIT_MOVES_TO_VEC
I ran into
during RTL pass: reload
source/grid/tria.cc: In function 'execute_refinement':
source/grid/tria.cc:9243:4: internal compiler error: in lra_assign, at
lra-assigns.c:1647
9243 | }
| ^
0xa45159 lra_assign(bool&)
/export/gnu/import/git/intel/gcc-tuning/gcc/lra-assigns.c:1647
0xa3fb4d lra(_IO_FILE*)
/export/gnu/import/git/intel/gcc-tuning/gcc/lra.c:2482
0x9fc3f1 do_reload
/export/gnu/import/git/intel/gcc-tuning/gcc/ira.c:5511
0x9fc3f1 execute
/export/gnu/import/git/intel/gcc-tuning/gcc/ira.c:5697
Please submit a full bug report,
from
if (! lra_asm_error_p && flag_checking)
/* Check correctness of allocation for call-crossed pseudos but
only when there are no asm errors as in the case of errors the
asm is removed and it can result in incorrect allocation. */
for (i = FIRST_PSEUDO_REGISTER; i < max_regno; i++)
if (lra_reg_info[i].nrefs != 0
&& reg_renumber[i] >= 0
&& overlaps_hard_reg_set_p (lra_reg_info[i].conflict_hard_regs,
PSEUDO_REGNO_MODE (i), reg_renumber[i]))
gcc_unreachable ();
LRA calls
Check for conflict
assign_by_spills <<<<< Assign mask register k0 to a pseudo
...
assign_spill_hard_regs <<<< Assign mask register k0 to a different pseudo
...
Check for conflict <<< internal compiler error
assign_by_spills
assign_spill_hard_regs fails to notice that k0 has been assigned to
a pseudo.
