[PATCH v3 0/3] target/riscv: Remove redundant insn length check for zama16b

[PATCH v3 0/3] target/riscv: Remove redundant insn length check for zama16b

[LIU Zhiwei]

In this patch set, we remove the redundant insn length check for zama16b as the
specification clarified that zama16b applies to compressed encodings[1].

Richard points out we should obey the MXLEN requirement for F/D/Q loads or stores,
so we add this constraint for trans_fld/fsd.

I notice that we have a too strict aligment implementation for fld/fsd when xlen < 64.
It will hide some problems. So relex it from MO_ATOM_IFALIGN to MO_ATOM_NONE.

[1]: https://github.com/riscv/riscv-isa-manual/pull/1557

v3<-v2:
  1. Using get_xl_max instead of ctx->misa_mxl_max as documentation.
  2. Fix not clean split in patch 1.
  3. Explicitly specified aligment for fld/fsd under all cases. 

v2<-v1:
  1. Add mxlen check for fld when applies zama16b.
  2. Relax fld/fsd alignment for MO_ATOM_IFALIGN to MO_ATOM_NONE.

LIU Zhiwei (3):
  target/riscv: Remove redundant insn length check for zama16b
  target/riscv: Add MXLEN check for F/D/Q applies to zama16b
  target/riscv: Relax fld alignment requirement

 target/riscv/insn_trans/trans_rvd.c.inc | 18 ++++++++++++++++--
 target/riscv/insn_trans/trans_rvf.c.inc |  4 ++--
 target/riscv/insn_trans/trans_rvi.c.inc |  4 ++--
 3 files changed, 20 insertions(+), 6 deletions(-)

-- 
2.25.1

[PATCH v3 1/3] target/riscv: Remove redundant insn length check for zama16b

[LIU Zhiwei]

Compressed encodings also applies to zama16b.
https://github.com/riscv/riscv-isa-manual/pull/1557

Suggested-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
---
 target/riscv/insn_trans/trans_rvd.c.inc | 4 ++--
 target/riscv/insn_trans/trans_rvf.c.inc | 4 ++--
 target/riscv/insn_trans/trans_rvi.c.inc | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
index 1f5fac65a2..0ac42c3223 100644
--- a/target/riscv/insn_trans/trans_rvd.c.inc
+++ b/target/riscv/insn_trans/trans_rvd.c.inc
@@ -47,7 +47,7 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVD);
 
-    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
+    if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
 
@@ -67,7 +67,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVD);
 
-    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
+    if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
 
diff --git a/target/riscv/insn_trans/trans_rvf.c.inc b/target/riscv/insn_trans/trans_rvf.c.inc
index f771aa1939..0222a728df 100644
--- a/target/riscv/insn_trans/trans_rvf.c.inc
+++ b/target/riscv/insn_trans/trans_rvf.c.inc
@@ -48,7 +48,7 @@ static bool trans_flw(DisasContext *ctx, arg_flw *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVF);
 
-    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
+    if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
 
@@ -70,7 +70,7 @@ static bool trans_fsw(DisasContext *ctx, arg_fsw *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVF);
 
-    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
+    if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
 
diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc
index 98e3806d5e..fab5c06719 100644
--- a/target/riscv/insn_trans/trans_rvi.c.inc
+++ b/target/riscv/insn_trans/trans_rvi.c.inc
@@ -268,7 +268,7 @@ static bool gen_load(DisasContext *ctx, arg_lb *a, MemOp memop)
 {
     bool out;
 
-    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
+    if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
     decode_save_opc(ctx);
@@ -369,7 +369,7 @@ static bool gen_store_i128(DisasContext *ctx, arg_sb *a, MemOp memop)
 
 static bool gen_store(DisasContext *ctx, arg_sb *a, MemOp memop)
 {
-    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
+    if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
     decode_save_opc(ctx);
-- 
2.25.1

[PATCH v3 2/3] target/riscv: Add MXLEN check for F/D/Q applies to zama16b

[LIU Zhiwei]

Zama16b loads and stores of no more than MXLEN bits defined in the F, D, and Q
extensions.

Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
---
 target/riscv/insn_trans/trans_rvd.c.inc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
index 0ac42c3223..49682292b8 100644
--- a/target/riscv/insn_trans/trans_rvd.c.inc
+++ b/target/riscv/insn_trans/trans_rvd.c.inc
@@ -47,7 +47,11 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVD);
 
-    if (ctx->cfg_ptr->ext_zama16b) {
+    /*
+     * Zama16b applies to loads and stores of no more than MXLEN bits defined
+     * in the F, D, and Q extensions.
+     */
+    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
 
@@ -67,7 +71,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVD);
 
-    if (ctx->cfg_ptr->ext_zama16b) {
+    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
     }
 
-- 
2.25.1

[PATCH v3 3/3] target/riscv: Relax fld alignment requirement

[LIU Zhiwei]

According to the risc-v specification:
"FLD and FSD are only guaranteed to execute atomically if the effective
address is naturally aligned and XLEN≥64."

We currently implement fld as MO_ATOM_IFALIGN when XLEN < 64, which does
not violate the rules. But it will hide some problems. So relax it to
MO_ATOM_NONE.

Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
---
 target/riscv/insn_trans/trans_rvd.c.inc | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
index 49682292b8..8a46124f98 100644
--- a/target/riscv/insn_trans/trans_rvd.c.inc
+++ b/target/riscv/insn_trans/trans_rvd.c.inc
@@ -48,11 +48,17 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
     REQUIRE_EXT(ctx, RVD);
 
     /*
-     * Zama16b applies to loads and stores of no more than MXLEN bits defined
-     * in the F, D, and Q extensions.
+     * FLD and FSD are only guaranteed to execute atomically if the effective
+     * address is naturally aligned and XLEN≥64. Also, zama16b applies to
+     * loads and stores of no more than MXLEN bits defined in the F, D, and
+     * Q extensions.
      */
-    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
+    if (get_xl_max(ctx) == MXL_RV32) {
+        memop |= MO_ATOM_NONE;
+    } else if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
+    } else {
+        memop |= MO_ATOM_IFALIGN;
     }
 
     decode_save_opc(ctx);
@@ -71,8 +77,12 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
     REQUIRE_FPU;
     REQUIRE_EXT(ctx, RVD);
 
-    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
+    if (get_xl_max(ctx) == MXL_RV32) {
+        memop |= MO_ATOM_NONE;
+    } else if (ctx->cfg_ptr->ext_zama16b) {
         memop |= MO_ATOM_WITHIN16;
+    } else {
+        memop |= MO_ATOM_IFALIGN;
     }
 
     decode_save_opc(ctx);
-- 
2.25.1

Re: [PATCH v3 1/3] target/riscv: Remove redundant insn length check for zama16b

[Richard Henderson]

On 8/2/24 17:24, LIU Zhiwei wrote:
> Compressed encodings also applies to zama16b.
> https://github.com/riscv/riscv-isa-manual/pull/1557
> 
> Suggested-by: Alistair Francis<alistair.francis@wdc.com>
> Signed-off-by: LIU Zhiwei<zhiwei_liu@linux.alibaba.com>
> ---
>   target/riscv/insn_trans/trans_rvd.c.inc | 4 ++--
>   target/riscv/insn_trans/trans_rvf.c.inc | 4 ++--
>   target/riscv/insn_trans/trans_rvi.c.inc | 4 ++--
>   3 files changed, 6 insertions(+), 6 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

Re: [PATCH v3 2/3] target/riscv: Add MXLEN check for F/D/Q applies to zama16b

[Richard Henderson]

On 8/2/24 17:24, LIU Zhiwei wrote:
> Zama16b loads and stores of no more than MXLEN bits defined in the F, D, and Q
> extensions.
> 
> Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
> ---
>   target/riscv/insn_trans/trans_rvd.c.inc | 8 ++++++--
>   1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
> index 0ac42c3223..49682292b8 100644
> --- a/target/riscv/insn_trans/trans_rvd.c.inc
> +++ b/target/riscv/insn_trans/trans_rvd.c.inc
> @@ -47,7 +47,11 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
>       REQUIRE_FPU;
>       REQUIRE_EXT(ctx, RVD);
>   
> -    if (ctx->cfg_ptr->ext_zama16b) {
> +    /*
> +     * Zama16b applies to loads and stores of no more than MXLEN bits defined
> +     * in the F, D, and Q extensions.
> +     */
> +    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
>           memop |= MO_ATOM_WITHIN16;
>       }
>   
> @@ -67,7 +71,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
>       REQUIRE_FPU;
>       REQUIRE_EXT(ctx, RVD);
>   
> -    if (ctx->cfg_ptr->ext_zama16b) {
> +    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
>           memop |= MO_ATOM_WITHIN16;
>       }
>   

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

Re: [PATCH v3 3/3] target/riscv: Relax fld alignment requirement

[Richard Henderson]

On 8/2/24 17:24, LIU Zhiwei wrote:
> According to the risc-v specification:
> "FLD and FSD are only guaranteed to execute atomically if the effective
> address is naturally aligned and XLEN≥64."
> 
> We currently implement fld as MO_ATOM_IFALIGN when XLEN < 64, which does
> not violate the rules. But it will hide some problems. So relax it to
> MO_ATOM_NONE.
> 
> Signed-off-by: LIU Zhiwei<zhiwei_liu@linux.alibaba.com>
> ---
>   target/riscv/insn_trans/trans_rvd.c.inc | 18 ++++++++++++++----
>   1 file changed, 14 insertions(+), 4 deletions(-)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

r~

Re: [PATCH v3 1/3] target/riscv: Remove redundant insn length check for zama16b

[Alistair Francis]

On Fri, Aug 2, 2024 at 5:26 PM LIU Zhiwei <zhiwei_liu@linux.alibaba.com> wrote:
>
> Compressed encodings also applies to zama16b.
> https://github.com/riscv/riscv-isa-manual/pull/1557
>
> Suggested-by: Alistair Francis <alistair.francis@wdc.com>
> Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn_trans/trans_rvd.c.inc | 4 ++--
>  target/riscv/insn_trans/trans_rvf.c.inc | 4 ++--
>  target/riscv/insn_trans/trans_rvi.c.inc | 4 ++--
>  3 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
> index 1f5fac65a2..0ac42c3223 100644
> --- a/target/riscv/insn_trans/trans_rvd.c.inc
> +++ b/target/riscv/insn_trans/trans_rvd.c.inc
> @@ -47,7 +47,7 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVD);
>
> -    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
> +    if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>
> @@ -67,7 +67,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVD);
>
> -    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
> +    if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>
> diff --git a/target/riscv/insn_trans/trans_rvf.c.inc b/target/riscv/insn_trans/trans_rvf.c.inc
> index f771aa1939..0222a728df 100644
> --- a/target/riscv/insn_trans/trans_rvf.c.inc
> +++ b/target/riscv/insn_trans/trans_rvf.c.inc
> @@ -48,7 +48,7 @@ static bool trans_flw(DisasContext *ctx, arg_flw *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVF);
>
> -    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
> +    if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>
> @@ -70,7 +70,7 @@ static bool trans_fsw(DisasContext *ctx, arg_fsw *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVF);
>
> -    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
> +    if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>
> diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc
> index 98e3806d5e..fab5c06719 100644
> --- a/target/riscv/insn_trans/trans_rvi.c.inc
> +++ b/target/riscv/insn_trans/trans_rvi.c.inc
> @@ -268,7 +268,7 @@ static bool gen_load(DisasContext *ctx, arg_lb *a, MemOp memop)
>  {
>      bool out;
>
> -    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
> +    if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>      decode_save_opc(ctx);
> @@ -369,7 +369,7 @@ static bool gen_store_i128(DisasContext *ctx, arg_sb *a, MemOp memop)
>
>  static bool gen_store(DisasContext *ctx, arg_sb *a, MemOp memop)
>  {
> -    if (ctx->cfg_ptr->ext_zama16b && (ctx->cur_insn_len != 2)) {
> +    if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>      decode_save_opc(ctx);
> --
> 2.25.1
>
>

Re: [PATCH v3 2/3] target/riscv: Add MXLEN check for F/D/Q applies to zama16b

[Alistair Francis]

On Fri, Aug 2, 2024 at 5:27 PM LIU Zhiwei <zhiwei_liu@linux.alibaba.com> wrote:
>
> Zama16b loads and stores of no more than MXLEN bits defined in the F, D, and Q
> extensions.
>
> Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn_trans/trans_rvd.c.inc | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
> index 0ac42c3223..49682292b8 100644
> --- a/target/riscv/insn_trans/trans_rvd.c.inc
> +++ b/target/riscv/insn_trans/trans_rvd.c.inc
> @@ -47,7 +47,11 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVD);
>
> -    if (ctx->cfg_ptr->ext_zama16b) {
> +    /*
> +     * Zama16b applies to loads and stores of no more than MXLEN bits defined
> +     * in the F, D, and Q extensions.
> +     */
> +    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>
> @@ -67,7 +71,7 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVD);
>
> -    if (ctx->cfg_ptr->ext_zama16b) {
> +    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
>      }
>
> --
> 2.25.1
>
>

Re: [PATCH v3 3/3] target/riscv: Relax fld alignment requirement

[Alistair Francis]

On Fri, Aug 2, 2024 at 5:27 PM LIU Zhiwei <zhiwei_liu@linux.alibaba.com> wrote:
>
> According to the risc-v specification:
> "FLD and FSD are only guaranteed to execute atomically if the effective
> address is naturally aligned and XLEN≥64."
>
> We currently implement fld as MO_ATOM_IFALIGN when XLEN < 64, which does
> not violate the rules. But it will hide some problems. So relax it to
> MO_ATOM_NONE.
>
> Signed-off-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn_trans/trans_rvd.c.inc | 18 ++++++++++++++----
>  1 file changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/target/riscv/insn_trans/trans_rvd.c.inc b/target/riscv/insn_trans/trans_rvd.c.inc
> index 49682292b8..8a46124f98 100644
> --- a/target/riscv/insn_trans/trans_rvd.c.inc
> +++ b/target/riscv/insn_trans/trans_rvd.c.inc
> @@ -48,11 +48,17 @@ static bool trans_fld(DisasContext *ctx, arg_fld *a)
>      REQUIRE_EXT(ctx, RVD);
>
>      /*
> -     * Zama16b applies to loads and stores of no more than MXLEN bits defined
> -     * in the F, D, and Q extensions.
> +     * FLD and FSD are only guaranteed to execute atomically if the effective
> +     * address is naturally aligned and XLEN≥64. Also, zama16b applies to
> +     * loads and stores of no more than MXLEN bits defined in the F, D, and
> +     * Q extensions.
>       */
> -    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
> +    if (get_xl_max(ctx) == MXL_RV32) {
> +        memop |= MO_ATOM_NONE;
> +    } else if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
> +    } else {
> +        memop |= MO_ATOM_IFALIGN;
>      }
>
>      decode_save_opc(ctx);
> @@ -71,8 +77,12 @@ static bool trans_fsd(DisasContext *ctx, arg_fsd *a)
>      REQUIRE_FPU;
>      REQUIRE_EXT(ctx, RVD);
>
> -    if ((get_xl_max(ctx) >= MXL_RV64) && ctx->cfg_ptr->ext_zama16b) {
> +    if (get_xl_max(ctx) == MXL_RV32) {
> +        memop |= MO_ATOM_NONE;
> +    } else if (ctx->cfg_ptr->ext_zama16b) {
>          memop |= MO_ATOM_WITHIN16;
> +    } else {
> +        memop |= MO_ATOM_IFALIGN;
>      }
>
>      decode_save_opc(ctx);
> --
> 2.25.1
>
>

Re: [PATCH v3 0/3] target/riscv: Remove redundant insn length check for zama16b

[Alistair Francis]

On Fri, Aug 2, 2024 at 5:25 PM LIU Zhiwei <zhiwei_liu@linux.alibaba.com> wrote:
>
> In this patch set, we remove the redundant insn length check for zama16b as the
> specification clarified that zama16b applies to compressed encodings[1].
>
> Richard points out we should obey the MXLEN requirement for F/D/Q loads or stores,
> so we add this constraint for trans_fld/fsd.
>
> I notice that we have a too strict aligment implementation for fld/fsd when xlen < 64.
> It will hide some problems. So relex it from MO_ATOM_IFALIGN to MO_ATOM_NONE.
>
> [1]: https://github.com/riscv/riscv-isa-manual/pull/1557
>
> v3<-v2:
>   1. Using get_xl_max instead of ctx->misa_mxl_max as documentation.
>   2. Fix not clean split in patch 1.
>   3. Explicitly specified aligment for fld/fsd under all cases.
>
> v2<-v1:
>   1. Add mxlen check for fld when applies zama16b.
>   2. Relax fld/fsd alignment for MO_ATOM_IFALIGN to MO_ATOM_NONE.
>
> LIU Zhiwei (3):
>   target/riscv: Remove redundant insn length check for zama16b
>   target/riscv: Add MXLEN check for F/D/Q applies to zama16b
>   target/riscv: Relax fld alignment requirement

Thanks!

Applied to riscv-to-apply.next

Alistair

>
>  target/riscv/insn_trans/trans_rvd.c.inc | 18 ++++++++++++++++--
>  target/riscv/insn_trans/trans_rvf.c.inc |  4 ++--
>  target/riscv/insn_trans/trans_rvi.c.inc |  4 ++--
>  3 files changed, 20 insertions(+), 6 deletions(-)
>
> --
> 2.25.1
>
>