gcc/ChangeLog:

        * doc/md.texi: Add mask_len_strided_load/mask_len_strided_store optab.
        * optabs.def (OPTAB_D): Ditto.

---
 gcc/doc/md.texi | 27 +++++++++++++++++++++++++++
 gcc/optabs.def  |  2 ++
 2 files changed, 29 insertions(+)

diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index fab2513105a..eee4fe156e4 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -5094,6 +5094,20 @@ Bit @var{i} of the mask is set if element @var{i} of the 
result should
 be loaded from memory and clear if element @var{i} of the result should be 
undefined.
 Mask elements @var{i} with @var{i} > (operand 6 + operand 7) are ignored.
 
+@cindex @code{mask_len_strided_load@var{m}} instruction pattern
+@item @samp{mask_len_strided_load@var{m}}
+Load several separate memory locations into a destination vector of mode 
@var{m}.
+Operand 0 is a destination vector of mode @var{m}.
+Operand 1 is a scalar base address and operand 2 is a scalar stride of Pmode.
+operand 3 is mask operand, operand 4 is length operand and operand 5 is bias 
operand.
+The instruction can be seen as a special case of 
@code{mask_len_gather_load@var{m}@var{n}}
+with an offset vector that is a @code{vec_series} with operand 1 as base and 
operand 2 as step.
+For each element index i load address is operand 1 + @var{i} * operand 2.
+Similar to mask_len_load, the instruction loads at most (operand 4 + operand 
5) elements from memory.
+Element @var{i} of the mask (operand 3) is set if element @var{i} of the 
result should
+be loaded from memory and clear if element @var{i} of the result should be 
zero.
+Mask elements @var{i} with @var{i} > (operand 4 + operand 5) are ignored.
+
 @cindex @code{scatter_store@var{m}@var{n}} instruction pattern
 @item @samp{scatter_store@var{m}@var{n}}
 Store a vector of mode @var{m} into several distinct memory locations.
@@ -5131,6 +5145,19 @@ at most (operand 6 + operand 7) elements of (operand 4) 
to memory.
 Bit @var{i} of the mask is set if element @var{i} of (operand 4) should be 
stored.
 Mask elements @var{i} with @var{i} > (operand 6 + operand 7) are ignored.
 
+@cindex @code{mask_len_strided_store@var{m}} instruction pattern
+@item @samp{mask_len_strided_store@var{m}}
+Store a vector of mode m into several distinct memory locations.
+Operand 0 is a scalar base address and operand 1 is scalar stride of Pmode.
+Operand 2 is the vector of values that should be stored, which is of mode 
@var{m}.
+operand 3 is mask operand, operand 4 is length operand and operand 5 is bias 
operand.
+The instruction can be seen as a special case of 
@code{mask_len_scatter_store@var{m}@var{n}}
+with an offset vector that is a @code{vec_series} with operand 1 as base and 
operand 1 as step.
+For each element index i store address is operand 0 + @var{i} * operand 1.
+Similar to mask_len_store, the instruction stores at most (operand 4 + operand 
5) elements of mask (operand 3) to memory.
+Element @var{i} of the mask is set if element @var{i} of (operand 3) should be 
stored.
+Mask elements @var{i} with @var{i} > (operand 4 + operand 5) are ignored.
+
 @cindex @code{vec_set@var{m}} instruction pattern
 @item @samp{vec_set@var{m}}
 Set given field in the vector value.  Operand 0 is the vector to modify,
diff --git a/gcc/optabs.def b/gcc/optabs.def
index 2ccbe4197b7..9ae677f8f27 100644
--- a/gcc/optabs.def
+++ b/gcc/optabs.def
@@ -536,4 +536,6 @@ OPTAB_DC (vec_series_optab, "vec_series$a", VEC_SERIES)
 OPTAB_D (vec_shl_insert_optab, "vec_shl_insert_$a")
 OPTAB_D (len_load_optab, "len_load_$a")
 OPTAB_D (len_store_optab, "len_store_$a")
+OPTAB_D (mask_len_strided_load_optab, "mask_len_strided_load_$a")
+OPTAB_D (mask_len_strided_store_optab, "mask_len_strided_store_$a")
 OPTAB_D (select_vl_optab, "select_vl$a")
-- 
2.36.3

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