1. Patchew
  2. QEMU
  3. View series

[PATCH] target/riscv: rvv: Check single width operator for vector fp widen instructions

Max Chou posted 1 patch 1 year, 10 months ago
Patches applied successfully (tree, apply log)
git fetch https://github.com/patchew-project/qemu tags/patchew/20240320072709.1043227-3-max.chou@sifive.com
Maintainers: Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Weiwei Li <liwei1518@gmail.com>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>
target/riscv/insn_trans/trans_rvv.c.inc | 5 +++++
1 file changed, 5 insertions(+)
[PATCH] target/riscv: rvv: Check single width operator for vector fp widen instructions
Posted by Max Chou 1 year, 10 months ago 
The require_scale_rvf function only checks the double width operator for
the vector floating point widen instructions, so most of the widen
checking functions need to add require_rvf for single width operator.

The vfwcvt.f.x.v and vfwcvt.f.xu.v instructions convert single width
integer to double width float, so the opfxv_widen_check function doesn’t
need require_rvf for the single width operator(integer).

Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/insn_trans/trans_rvv.c.inc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
index ef568e263d..6cb9bc9fde 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -2331,6 +2331,7 @@ GEN_OPFVF_TRANS(vfrsub_vf,  opfvf_check)
 static bool opfvv_widen_check(DisasContext *s, arg_rmrr *a)
 {
     return require_rvv(s) &&
+           require_rvf(s) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
@@ -2370,6 +2371,7 @@ GEN_OPFVV_WIDEN_TRANS(vfwsub_vv, opfvv_widen_check)
 static bool opfvf_widen_check(DisasContext *s, arg_rmrr *a)
 {
     return require_rvv(s) &&
+           require_rvf(s) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
@@ -2402,6 +2404,7 @@ GEN_OPFVF_WIDEN_TRANS(vfwsub_vf)
 static bool opfwv_widen_check(DisasContext *s, arg_rmrr *a)
 {
     return require_rvv(s) &&
+           require_rvf(s) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
@@ -2441,6 +2444,7 @@ GEN_OPFWV_WIDEN_TRANS(vfwsub_wv)
 static bool opfwf_widen_check(DisasContext *s, arg_rmrr *a)
 {
     return require_rvv(s) &&
+           require_rvf(s) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8) &&
            vext_check_isa_ill(s) &&
@@ -2941,6 +2945,7 @@ GEN_OPFVV_TRANS(vfredmin_vs, freduction_check)
 static bool freduction_widen_check(DisasContext *s, arg_rmrr *a)
 {
     return reduction_widen_check(s, a) &&
+           require_rvf(s) &&
            require_scale_rvf(s) &&
            (s->sew != MO_8);
 }
-- 
2.31.1
Re: [PATCH] target/riscv: rvv: Check single width operator for vector fp widen instructions
Posted by Daniel Henrique Barboza 1 year, 10 months ago 

On 3/20/24 04:25, Max Chou wrote:
> The require_scale_rvf function only checks the double width operator for
> the vector floating point widen instructions, so most of the widen
> checking functions need to add require_rvf for single width operator.
> 
> The vfwcvt.f.x.v and vfwcvt.f.xu.v instructions convert single width
> integer to double width float, so the opfxv_widen_check function doesn’t
> need require_rvf for the single width operator(integer).
> 
> Signed-off-by: Max Chou <max.chou@sifive.com>
> ---

Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>

>   target/riscv/insn_trans/trans_rvv.c.inc | 5 +++++
>   1 file changed, 5 insertions(+)
> 
> diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
> index ef568e263d..6cb9bc9fde 100644
> --- a/target/riscv/insn_trans/trans_rvv.c.inc
> +++ b/target/riscv/insn_trans/trans_rvv.c.inc
> @@ -2331,6 +2331,7 @@ GEN_OPFVF_TRANS(vfrsub_vf,  opfvf_check)
>   static bool opfvv_widen_check(DisasContext *s, arg_rmrr *a)
>   {
>       return require_rvv(s) &&
> +           require_rvf(s) &&
>              require_scale_rvf(s) &&
>              (s->sew != MO_8) &&
>              vext_check_isa_ill(s) &&
> @@ -2370,6 +2371,7 @@ GEN_OPFVV_WIDEN_TRANS(vfwsub_vv, opfvv_widen_check)
>   static bool opfvf_widen_check(DisasContext *s, arg_rmrr *a)
>   {
>       return require_rvv(s) &&
> +           require_rvf(s) &&
>              require_scale_rvf(s) &&
>              (s->sew != MO_8) &&
>              vext_check_isa_ill(s) &&
> @@ -2402,6 +2404,7 @@ GEN_OPFVF_WIDEN_TRANS(vfwsub_vf)
>   static bool opfwv_widen_check(DisasContext *s, arg_rmrr *a)
>   {
>       return require_rvv(s) &&
> +           require_rvf(s) &&
>              require_scale_rvf(s) &&
>              (s->sew != MO_8) &&
>              vext_check_isa_ill(s) &&
> @@ -2441,6 +2444,7 @@ GEN_OPFWV_WIDEN_TRANS(vfwsub_wv)
>   static bool opfwf_widen_check(DisasContext *s, arg_rmrr *a)
>   {
>       return require_rvv(s) &&
> +           require_rvf(s) &&
>              require_scale_rvf(s) &&
>              (s->sew != MO_8) &&
>              vext_check_isa_ill(s) &&
> @@ -2941,6 +2945,7 @@ GEN_OPFVV_TRANS(vfredmin_vs, freduction_check)
>   static bool freduction_widen_check(DisasContext *s, arg_rmrr *a)
>   {
>       return reduction_widen_check(s, a) &&
> +           require_rvf(s) &&
>              require_scale_rvf(s) &&
>              (s->sew != MO_8);
>   }

Patchew 2.1-devel-b67e4c2

© 2016 - 2026 Red Hat, Inc.