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From: "crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/104496] [12 Regression] ICE: in as_a, at machmode.h:365
 with -O -mgeneral-regs-only -msse
Date: Fri, 11 Feb 2022 07:44:42 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104496

--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
(In reply to Hongtao.liu from comment #2)
> here is type V, a vector type with DImode and hit ICE in build=20
> build_vector_type_for_mode (type, mode) which take type as inner_type.
>=20
>  <vector_type 0x7fffea3ec498
>     type <integer_type 0x7fffea2fe5e8 int public SI
>         size <integer_cst 0x7fffea2e2f90 constant 32>
>         unit-size <integer_cst 0x7fffea2e2fa8 constant 4>
>         align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
> 0x7fffea2fe5e8 precision:32 min <integer_cst 0x7fffea2e2f48 -2147483648> =
max
> <integer_cst 0x7fffea2e2f60 2147483647>
>         pointer_to_this <pointer_type 0x7fffea3069d8>>
>     DI
>     size <integer_cst 0x7fffea2e2d50 type <integer_type 0x7fffea2fe0a8
> bitsizetype> constant 64>
>     unit-size <integer_cst 0x7fffea2e2d68 type <integer_type 0x7fffea2fe0=
00
> sizetype> constant 8>

/* If TYPE is a vector type, return true if IFN is a direct internal
   function that is supported for that type.  If TYPE is a scalar type,
   return true if IFN is a direct internal function that is supported for
   the target's preferred vector version of TYPE.  */

Hmm, TYPE is vector type, but mode is scalar mode.=