rs6000: Remove vcond{,u} expanders

Hi,

As PR114189 shows, middle-end will obsolete vcond, vcondu
and vcondeq optabs soon.  This patch is to remove all
vcond{,u} expanders in rs6000 port and adjust the function
rs6000_emit_vector_cond_expr which is called by those
expanders as static.

Bootstrapped and regtested on powerpc64-linux-gnu P8/P9 and
powerpc64le-linux-gnu P9 and P10.

I'm going to push this later this week if no objections.

BR,
Kewen
-----

gcc/ChangeLog:

	* config/rs6000/rs6000-protos.h (rs6000_emit_vector_cond_expr): Remove.
	* config/rs6000/rs6000.cc (rs6000_emit_vector_cond_expr): Add static
	qualifier as it is only called by rs6000_emit_swsqrt now.
	* config/rs6000/vector.md (vcond<VEC_F:mode><VEC_F:mode>): Remove.
	(vcond<VEC_I:mode><VEC_I:mode>): Remove.
	(vcondv4sfv4si): Likewise.
	(vcondv4siv4sf): Likewise.
	(vcondv2dfv2di): Likewise.
	(vcondv2div2df): Likewise.
	(vcondu<VEC_I:mode><VEC_I:mode>): Likewise.
	(vconduv4sfv4si): Likewise.
	(vconduv2dfv2di): Likewise.
---
 gcc/config/rs6000/rs6000-protos.h |   1 -
 gcc/config/rs6000/rs6000.cc       |   2 +-
 gcc/config/rs6000/vector.md       | 160 ------------------------------
 3 files changed, 1 insertion(+), 162 deletions(-)

 ;; Same mode for condition true/false values and predicate operand.
--
2.39.1

On Mon, Jul 8, 2024 at 8:24 AM Kewen.Lin <linkw@linux.ibm.com> wrote:
>
> Hi,
>
> As PR114189 shows, middle-end will obsolete vcond, vcondu
> and vcondeq optabs soon.  This patch is to remove all
> vcond{,u} expanders in rs6000 port and adjust the function
> rs6000_emit_vector_cond_expr which is called by those
> expanders as static.
>
> Bootstrapped and regtested on powerpc64-linux-gnu P8/P9 and
> powerpc64le-linux-gnu P9 and P10.
>
> I'm going to push this later this week if no objections.

Thanks a lot for doing this!

Richard.

> BR,
> Kewen
> -----
>
> gcc/ChangeLog:
>
>         * config/rs6000/rs6000-protos.h (rs6000_emit_vector_cond_expr): Remove.
>         * config/rs6000/rs6000.cc (rs6000_emit_vector_cond_expr): Add static
>         qualifier as it is only called by rs6000_emit_swsqrt now.
>         * config/rs6000/vector.md (vcond<VEC_F:mode><VEC_F:mode>): Remove.
>         (vcond<VEC_I:mode><VEC_I:mode>): Remove.
>         (vcondv4sfv4si): Likewise.
>         (vcondv4siv4sf): Likewise.
>         (vcondv2dfv2di): Likewise.
>         (vcondv2div2df): Likewise.
>         (vcondu<VEC_I:mode><VEC_I:mode>): Likewise.
>         (vconduv4sfv4si): Likewise.
>         (vconduv2dfv2di): Likewise.
> ---
>  gcc/config/rs6000/rs6000-protos.h |   1 -
>  gcc/config/rs6000/rs6000.cc       |   2 +-
>  gcc/config/rs6000/vector.md       | 160 ------------------------------
>  3 files changed, 1 insertion(+), 162 deletions(-)
>
> diff --git a/gcc/config/rs6000/rs6000-protos.h b/gcc/config/rs6000/rs6000-protos.h
> index 09a57a806fa..b40557a8557 100644
> --- a/gcc/config/rs6000/rs6000-protos.h
> +++ b/gcc/config/rs6000/rs6000-protos.h
> @@ -126,7 +126,6 @@ extern void rs6000_emit_dot_insn (rtx dst, rtx src, int dot, rtx ccreg);
>  extern bool rs6000_emit_set_const (rtx, rtx);
>  extern bool rs6000_emit_cmove (rtx, rtx, rtx, rtx);
>  extern bool rs6000_emit_int_cmove (rtx, rtx, rtx, rtx);
> -extern int rs6000_emit_vector_cond_expr (rtx, rtx, rtx, rtx, rtx, rtx);
>  extern void rs6000_emit_minmax (rtx, enum rtx_code, rtx, rtx);
>  extern void rs6000_expand_atomic_compare_and_swap (rtx op[]);
>  extern rtx swap_endian_selector_for_mode (machine_mode mode);
> diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
> index 58553ff66f4..24044f3a558 100644
> --- a/gcc/config/rs6000/rs6000.cc
> +++ b/gcc/config/rs6000/rs6000.cc
> @@ -16145,7 +16145,7 @@ rs6000_emit_vector_compare (enum rtx_code rcode,
>     OP_FALSE are two VEC_COND_EXPR operands.  CC_OP0 and CC_OP1 are the two
>     operands for the relation operation COND.  */
>
> -int
> +static int
>  rs6000_emit_vector_cond_expr (rtx dest, rtx op_true, rtx op_false,
>                               rtx cond, rtx cc_op0, rtx cc_op1)
>  {
> diff --git a/gcc/config/rs6000/vector.md b/gcc/config/rs6000/vector.md
> index 59489e06839..0d3e0a24e11 100644
> --- a/gcc/config/rs6000/vector.md
> +++ b/gcc/config/rs6000/vector.md
> @@ -331,166 +331,6 @@ (define_expand "vector_copysign<mode>3"
>  })
>
>
>
> -;; Vector comparisons
> -(define_expand "vcond<mode><mode>"
> -  [(set (match_operand:VEC_F 0 "vfloat_operand")
> -       (if_then_else:VEC_F
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:VEC_F 4 "vfloat_operand")
> -                         (match_operand:VEC_F 5 "vfloat_operand")])
> -        (match_operand:VEC_F 1 "vfloat_operand")
> -        (match_operand:VEC_F 2 "vfloat_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (<MODE>mode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vcond<mode><mode>"
> -  [(set (match_operand:VEC_I 0 "vint_operand")
> -       (if_then_else:VEC_I
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:VEC_I 4 "vint_operand")
> -                         (match_operand:VEC_I 5 "vint_operand")])
> -        (match_operand:VEC_I 1 "vector_int_reg_or_same_bit")
> -        (match_operand:VEC_I 2 "vector_int_reg_or_same_bit")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (<MODE>mode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vcondv4sfv4si"
> -  [(set (match_operand:V4SF 0 "vfloat_operand")
> -       (if_then_else:V4SF
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:V4SI 4 "vint_operand")
> -                         (match_operand:V4SI 5 "vint_operand")])
> -        (match_operand:V4SF 1 "vfloat_operand")
> -        (match_operand:V4SF 2 "vfloat_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (V4SFmode)
> -   && VECTOR_UNIT_ALTIVEC_P (V4SImode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vcondv4siv4sf"
> -  [(set (match_operand:V4SI 0 "vint_operand")
> -       (if_then_else:V4SI
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:V4SF 4 "vfloat_operand")
> -                         (match_operand:V4SF 5 "vfloat_operand")])
> -        (match_operand:V4SI 1 "vint_operand")
> -        (match_operand:V4SI 2 "vint_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (V4SFmode)
> -   && VECTOR_UNIT_ALTIVEC_P (V4SImode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vcondv2dfv2di"
> -  [(set (match_operand:V2DF 0 "vfloat_operand")
> -       (if_then_else:V2DF
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:V2DI 4 "vint_operand")
> -                         (match_operand:V2DI 5 "vint_operand")])
> -        (match_operand:V2DF 1 "vfloat_operand")
> -        (match_operand:V2DF 2 "vfloat_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (V2DFmode)
> -   && VECTOR_UNIT_ALTIVEC_OR_VSX_P (V2DImode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vcondv2div2df"
> -  [(set (match_operand:V2DI 0 "vint_operand")
> -       (if_then_else:V2DI
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:V2DF 4 "vfloat_operand")
> -                         (match_operand:V2DF 5 "vfloat_operand")])
> -        (match_operand:V2DI 1 "vint_operand")
> -        (match_operand:V2DI 2 "vint_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (V2DFmode)
> -   && VECTOR_UNIT_ALTIVEC_OR_VSX_P (V2DImode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vcondu<mode><mode>"
> -  [(set (match_operand:VEC_I 0 "vint_operand")
> -       (if_then_else:VEC_I
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:VEC_I 4 "vint_operand")
> -                         (match_operand:VEC_I 5 "vint_operand")])
> -        (match_operand:VEC_I 1 "vector_int_reg_or_same_bit")
> -        (match_operand:VEC_I 2 "vector_int_reg_or_same_bit")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (<MODE>mode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vconduv4sfv4si"
> -  [(set (match_operand:V4SF 0 "vfloat_operand")
> -       (if_then_else:V4SF
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:V4SI 4 "vint_operand")
> -                         (match_operand:V4SI 5 "vint_operand")])
> -        (match_operand:V4SF 1 "vfloat_operand")
> -        (match_operand:V4SF 2 "vfloat_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (V4SFmode)
> -   && VECTOR_UNIT_ALTIVEC_P (V4SImode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
> -(define_expand "vconduv2dfv2di"
> -  [(set (match_operand:V2DF 0 "vfloat_operand")
> -       (if_then_else:V2DF
> -        (match_operator 3 "comparison_operator"
> -                        [(match_operand:V2DI 4 "vint_operand")
> -                         (match_operand:V2DI 5 "vint_operand")])
> -        (match_operand:V2DF 1 "vfloat_operand")
> -        (match_operand:V2DF 2 "vfloat_operand")))]
> -  "VECTOR_UNIT_ALTIVEC_OR_VSX_P (V2DFmode)
> -   && VECTOR_UNIT_ALTIVEC_OR_VSX_P (V2DImode)"
> -{
> -  if (rs6000_emit_vector_cond_expr (operands[0], operands[1], operands[2],
> -                                   operands[3], operands[4], operands[5]))
> -    DONE;
> -  else
> -    gcc_unreachable ();
> -})
> -
>  ;; To support vector condition vectorization, define vcond_mask and vec_cmp.
>
>  ;; Same mode for condition true/false values and predicate operand.
> --
> 2.39.1