[Bug target/99252] New: SVE: ICE in maybe_legitimize_operand with LTO

[Bug target/99252] New: SVE: ICE in maybe_legitimize_operand with LTO

[acoplan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99252

            Bug ID: 99252
           Summary: SVE: ICE in maybe_legitimize_operand with LTO
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: acoplan at gcc dot gnu.org
  Target Milestone: ---

Presumably related to PR99216 since we fail to compile a simpler call to svaddv
with LTO there (although we're ICEing in a different place).

$ cat test.cc
#include <arm_sve.h>
int main() {
  return svaddv(svptrue_b8(), svadd_z(svptrue_b8(), svdup_s64(0),
svdup_s64(0)));
}
$ aarch64-linux-gnu-gcc -march=armv8.2-a+sve -flto test.cc
during RTL pass: expand
test.cc: In function ‘main’:
test.cc:3:16: internal compiler error: in maybe_legitimize_operand, at
optabs.c:7622
    3 |   return svaddv(svptrue_b8(), svadd_z(svptrue_b8(), svdup_s64(0),
svdup_s64(0)));
      |                ^
0xb855b3 maybe_legitimize_operand
        /home/alecop01/toolchain/src/gcc/gcc/optabs.c:7621
0xb855b3 maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
        /home/alecop01/toolchain/src/gcc/gcc/optabs.c:7758
0xb85926 maybe_gen_insn(insn_code, unsigned int, expand_operand*)
        /home/alecop01/toolchain/src/gcc/gcc/optabs.c:7777
0xb85b42 maybe_expand_insn(insn_code, unsigned int, expand_operand*)
        /home/alecop01/toolchain/src/gcc/gcc/optabs.c:7820
0xb850d9 expand_insn(insn_code, unsigned int, expand_operand*)
        /home/alecop01/toolchain/src/gcc/gcc/optabs.c:7851
0x1194a47 aarch64_sve::function_expander::generate_insn(insn_code)
       
/home/alecop01/toolchain/src/gcc/gcc/config/aarch64/aarch64-sve-builtins.cc:2883
0x11953e1 aarch64_sve::function_expander::use_exact_insn(insn_code)
       
/home/alecop01/toolchain/src/gcc/gcc/config/aarch64/aarch64-sve-builtins.cc:3031
0x1196101 aarch64_sve::function_expander::expand()
       
/home/alecop01/toolchain/src/gcc/gcc/config/aarch64/aarch64-sve-builtins.cc:3318
0x1197242 aarch64_sve::expand_builtin(unsigned int, tree_node*, rtx_def*)
       
/home/alecop01/toolchain/src/gcc/gcc/config/aarch64/aarch64-sve-builtins.cc:3607
0x10f62eb aarch64_expand_builtin
        /home/alecop01/toolchain/src/gcc/gcc/config/aarch64/aarch64.c:13568
0x74b79a expand_builtin(tree_node*, rtx_def*, rtx_def*, machine_mode, int)
        /home/alecop01/toolchain/src/gcc/gcc/builtins.c:9518
0x8c51cc expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
        /home/alecop01/toolchain/src/gcc/gcc/expr.c:11276
0x8c6779 expand_expr_real(tree_node*, rtx_def*, machine_mode, expand_modifier,
rtx_def**, bool)
        /home/alecop01/toolchain/src/gcc/gcc/expr.c:8513
0x8cfc1c store_expr(tree_node*, rtx_def*, int, bool, bool)
        /home/alecop01/toolchain/src/gcc/gcc/expr.c:5886
0x8d1927 expand_assignment(tree_node*, tree_node*, bool)
        /home/alecop01/toolchain/src/gcc/gcc/expr.c:5622
0x780d7c expand_call_stmt
        /home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:2838
0x780d7c expand_gimple_stmt_1
        /home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:3844
0x780d7c expand_gimple_stmt
        /home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:4008
0x78a5a7 expand_gimple_basic_block
        /home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:6045
0x78bc61 execute
        /home/alecop01/toolchain/src/gcc/gcc/cfgexpand.c:6729
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.
lto-wrapper: fatal error: aarch64-linux-gnu-gcc returned 1 exit status
compilation terminated.
/home/alecop01/toolchain/build-aarch64-linux-gnu/install/bin/../lib/gcc/aarch64-linux-gnu/11.0.0/../../../../aarch64-linux-gnu/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status

[Bug target/99252] SVE: ICE in maybe_legitimize_operand with LTO

[ktkachov at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99252

ktkachov at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
      Known to fail|                            |10.2.1
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-02-24
                 CC|                            |ktkachov at gcc dot gnu.org
   Target Milestone|---                         |10.3

--- Comment #1 from ktkachov at gcc dot gnu.org ---
Confirmed.

[Bug target/99252] SVE: ICE in maybe_legitimize_operand with LTO

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99252

rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |DUPLICATE
             Status|NEW                         |RESOLVED
                 CC|                            |rsandifo at gcc dot gnu.org

--- Comment #2 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Confirmed to be the same problem as PR99216.

*** This bug has been marked as a duplicate of bug 99216 ***