gcc/ChangeLog:

        * config/i386/avx10v2auxintrin.h (_mm_cvtss_epi32_epi8): New intrin.
        (_mm_mask_cvtss_epi32_epi8): Ditto.
        (_mm_maskz_cvtss_epi32_epi8): Ditto.
        (_mm_mask_cvtss_epi32_storeu_epi8): Ditto.
        (_mm256_cvtss_epi32_epi8): Ditto.
        (_mm256_mask_cvtss_epi32_epi8): Ditto.
        (_mm256_maskz_cvtss_epi32_epi8): Ditto.
        (_mm256_mask_cvtss_epi32_storeu_epi8): Ditto.
        (_mm512_cvtss_epi32_epi8): Ditto.
        (_mm512_mask_cvtss_epi32_epi8): Ditto.
        (_mm512_maskz_cvtss_epi32_epi8): Ditto.
        (_mm512_mask_cvtss_epi32_storeu_epi8): Ditto.
        (_mm_unpackb_epi8): Ditto.
        (_mm_mask_unpackb_epi8): Ditto.
        (_mm_maskz_unpackb_epi8): Ditto.
        (_mm256_unpackb_epi8): Ditto.
        (_mm256_mask_unpackb_epi8): Ditto.
        (_mm256_maskz_unpackb_epi8): Ditto.
        (_mm512_unpackb_epi8): Ditto.
        (_mm512_mask_unpackb_epi8): Ditto.
        (_mm512_maskz_unpackb_epi8): Ditto.
        * config/i386/i386-builtin-types.def (V16QI): Add new function type.
        * config/i386/i386-builtin.def (BDESC): Add new builtins.
        * config/i386/i386-expand.cc (ix86_expand_args_builtin): Handle new 
function type.
        * config/i386/predicates.md (const_8_to_63_operand): New predicate.
        * config/i386/sse.md (vunpackb<mode><mask_name>): New.
        (*vpmovssdb<mode>): Ditto.
        (vpmovssdbv4si_mask): Ditto.
        (*vpmovssdbv4si_mask): Ditto.
        (vpmovssdbv8si_mask): Ditto.
        (*vpmovssdbv8si_mask): Ditto.
        (vpmovssdbv16si<mask_name>): Ditto.
        (vpmovssdb<mode>_mask_store_1): Ditto.
        (vpmovssdb<mode>_mask_store_2): Ditto.

gcc/testsuite/ChangeLog:

        * lib/target-supports.exp: Add check for avx10v2aux.
        * gcc.target/i386/avx10v2aux-convert-1i.c: New test.
        * gcc.target/i386/avx10v2aux-convert-1j.c: New test.
        * gcc.target/i386/avx10v2aux-convert-1k.c: New test.

Co-authored-by: Venkataramanan Kumar <[email protected]>
Co-authored-by: Haochen Jiang <[email protected]>

---
 gcc/config/i386/avx10v2auxintrin.h            | 288 ++++++++++++++++++
 gcc/config/i386/i386-builtin-types.def        |   3 +
 gcc/config/i386/i386-builtin.def              |  10 +
 gcc/config/i386/i386-expand.cc                |   9 +
 gcc/config/i386/predicates.md                 |   5 +
 gcc/config/i386/sse.md                        | 149 +++++++++
 .../gcc.target/i386/avx10v2aux-convert-1i.c   |  36 +++
 .../gcc.target/i386/avx10v2aux-convert-1j.c   |  43 +++
 .../gcc.target/i386/avx10v2aux-convert-1k.c   |  29 ++
 gcc/testsuite/lib/target-supports.exp         |   3 +
 10 files changed, 575 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1i.c
 create mode 100644 gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1j.c
 create mode 100644 gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1k.c

diff --git a/gcc/config/i386/avx10v2auxintrin.h 
b/gcc/config/i386/avx10v2auxintrin.h
index fd54af28857..f828232d3c2 100644
--- a/gcc/config/i386/avx10v2auxintrin.h
+++ b/gcc/config/i386/avx10v2auxintrin.h
@@ -1608,6 +1608,294 @@ _mm512_maskz_cvthf6_hf8 (__mmask64 __U, __m512i __A)
                                                       (__mmask64) __U);
 }

+// VPMOVSSDB - 128-bit
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_cvtss_epi32_epi8 (__m128i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb128_mask ((__v4si) __A,
+                                                    (__v16qi)
+                                                    _mm_undefined_si128 (),
+                                                    (__mmask8) -1);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_mask_cvtss_epi32_epi8 (__m128i __W, __mmask8 __U, __m128i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb128_mask ((__v4si) __A,
+                                                    (__v16qi) __W,
+                                                    (__mmask8) __U);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_maskz_cvtss_epi32_epi8 (__mmask8 __U, __m128i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb128_mask ((__v4si) __A,
+                                                    (__v16qi)
+                                                    _mm_setzero_si128 (),
+                                                    (__mmask8) __U);
+}
+
+extern __inline void
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_mask_cvtss_epi32_storeu_epi8 (void * __P, __mmask8 __U, __m128i __A)
+{
+  __builtin_ia32_vpmovssdb128mem_mask ((unsigned int *) __P,
+                                      (__v4si) __A,
+                                      (__mmask8) __U);
+}
+
+// VPMOVSSDB - 256-bit
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_cvtss_epi32_epi8 (__m256i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb256_mask ((__v8si) __A,
+                                                    (__v16qi)
+                                                    _mm_undefined_si128 (),
+                                                    (__mmask8) -1);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_mask_cvtss_epi32_epi8 (__m128i __W, __mmask8 __U, __m256i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb256_mask ((__v8si) __A,
+                                                    (__v16qi) __W,
+                                                    (__mmask8) __U);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_maskz_cvtss_epi32_epi8 (__mmask8 __U, __m256i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb256_mask ((__v8si) __A,
+                                                    (__v16qi)
+                                                    _mm_setzero_si128 (),
+                                                    (__mmask8) __U);
+}
+
+extern __inline void
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_mask_cvtss_epi32_storeu_epi8 (void * __P, __mmask8 __U, __m256i __A)
+{
+  __builtin_ia32_vpmovssdb256mem_mask ((unsigned long long *) __P,
+                                      (__v8si) __A,
+                                      (__mmask8) __U);
+}
+
+// VPMOVSSDB - 512-bit
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_cvtss_epi32_epi8 (__m512i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb512_mask ((__v16si) __A,
+                                                    (__v16qi)
+                                                    _mm_undefined_si128 (),
+                                                    (__mmask16) -1);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_mask_cvtss_epi32_epi8 (__m128i __W, __mmask16 __U, __m512i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb512_mask ((__v16si) __A,
+                                                    (__v16qi) __W,
+                                                    (__mmask16) __U);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_maskz_cvtss_epi32_epi8 (__mmask16 __U, __m512i __A)
+{
+  return (__m128i) __builtin_ia32_vpmovssdb512_mask ((__v16si) __A,
+                                                    (__v16qi)
+                                                    _mm_setzero_si128 (),
+                                                    (__mmask16) __U);
+}
+
+extern __inline void
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_mask_cvtss_epi32_storeu_epi8 (void * __P, __mmask16 __U, __m512i __A)
+{
+  __builtin_ia32_vpmovssdb512mem_mask ((__v16qi *) __P,
+                                      (__v16si) __A,
+                                      (__mmask16) __U);
+}
+
+// VUNPACKB - 128-bit
+#ifdef __OPTIMIZE__
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_unpackb_epi8 (__m128i __A, const int __B)
+{
+  return (__m128i) __builtin_ia32_vunpackb128_mask ((__v16qi) __A,
+                                                   (const int) __B,
+                                                   (__v16qi)
+                                                   _mm_undefined_si128 (),
+                                                   (__mmask16) -1);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_mask_unpackb_epi8 (__m128i __W, __mmask16 __U,
+                      __m128i __A, const int __B)
+{
+  return (__m128i) __builtin_ia32_vunpackb128_mask ((__v16qi) __A,
+                                                   (const int) __B,
+                                                   (__v16qi) __W,
+                                                   (__mmask16) __U);
+}
+
+extern __inline __m128i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm_maskz_unpackb_epi8 (__mmask16 __U, __m128i __A, const int __B)
+{
+  return (__m128i) __builtin_ia32_vunpackb128_mask ((__v16qi) __A,
+                                                   (const int) __B,
+                                                   (__v16qi)
+                                                   _mm_setzero_si128 (),
+                                                   (__mmask16) __U);
+}
+
+// VUNPACKB - 256-bit
+
+extern __inline __m256i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_unpackb_epi8 (__m256i __A, const int __B)
+{
+  return (__m256i) __builtin_ia32_vunpackb256_mask ((__v32qi) __A,
+                                                   (const int) __B,
+                                                   (__v32qi)
+                                                   _mm256_undefined_si256 (),
+                                                   (__mmask32) -1);
+}
+
+extern __inline __m256i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_mask_unpackb_epi8 (__m256i __W, __mmask32 __U,
+                         __m256i __A, const int __B)
+{
+  return (__m256i) __builtin_ia32_vunpackb256_mask ((__v32qi) __A,
+                                                   (const int) __B,
+                                                   (__v32qi) __W,
+                                                   (__mmask32) __U);
+}
+
+extern __inline __m256i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm256_maskz_unpackb_epi8 (__mmask32 __U, __m256i __A, const int __B)
+{
+  return (__m256i) __builtin_ia32_vunpackb256_mask ((__v32qi) __A,
+                                                   (const int) __B,
+                                                   (__v32qi)
+                                                   _mm256_setzero_si256 (),
+                                                   (__mmask32) __U);
+}
+
+// VUNPACKB - 512-bit
+
+extern __inline __m512i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_unpackb_epi8 (__m512i __A, const int __B)
+{
+  return (__m512i) __builtin_ia32_vunpackb512_mask ((__v64qi) __A,
+                                                   (const int) __B,
+                                                   (__v64qi)
+                                                   _mm512_undefined_si512 (),
+                                                   (__mmask64) -1);
+}
+
+extern __inline __m512i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_mask_unpackb_epi8 (__m512i __W, __mmask64 __U, __m512i __A,
+                         const int __B)
+{
+  return (__m512i) __builtin_ia32_vunpackb512_mask ((__v64qi) __A,
+                                                   (const int) __B,
+                                                   (__v64qi) __W,
+                                                   (__mmask64) __U);
+}
+
+extern __inline __m512i
+__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
+_mm512_maskz_unpackb_epi8 (__mmask64 __U, __m512i __A, const int __B)
+{
+  return (__m512i) __builtin_ia32_vunpackb512_mask ((__v64qi) __A,
+                                                   (const int) __B,
+                                                   (__v64qi)
+                                                   _mm512_setzero_si512 (),
+                                                   (__mmask64) __U);
+}
+
+#else
+#define _mm_unpackb_epi8(A, imm)                                       \
+  ((__m128i) __builtin_ia32_vunpackb128_mask ((__v16qi)(__m128i)(A),   \
+                                             (int)(imm),               \
+                                             (__v16qi)(__m128i)        \
+                                             (_mm_undefined_si128 ()), \
+                                             (__mmask16)(-1)))
+
+#define _mm_mask_unpackb_epi8(W, U, A, imm)                            \
+  ((__m128i) __builtin_ia32_vunpackb128_mask ((__v16qi)(__m128i)(A),   \
+                                             (int)(imm),               \
+                                             (__v16qi)(__m128i)(W),    \
+                                             (__mmask16)(U)))
+
+#define _mm_maskz_unpackb_epi8(U, A, imm)                              \
+  ((__m128i) __builtin_ia32_vunpackb128_mask ((__v16qi)(__m128i)(A),   \
+                                             (int)(imm),               \
+                                             (__v16qi)(__m128i)        \
+                                             (_mm_undefined_si128 ()), \
+                                             (__mmask16)(U)))
+
+#define _mm256_unpackb_epi8(A, imm)                                    \
+  ((__m256i) __builtin_ia32_vunpackb256_mask ((__v32qi)(__m256i)(A),   \
+                                             (int)(imm),               \
+                                             (__v32qi)(__m256i)        \
+                                             (_mm256_undefined_si256 ()),  \
+                                             (__mmask32)(-1)))
+
+#define _mm256_mask_unpackb_epi8(W, U, A, imm)                         \
+  ((__m256i) __builtin_ia32_vunpackb256_mask ((__v32qi)(__m256i)(A),   \
+                                             (int)(imm),               \
+                                             (__v32qi)(__m256i)(W),    \
+                                             (__mmask32)(U)))
+
+#define _mm256_maskz_unpackb_epi8(U, A, imm)                           \
+  ((__m256i) __builtin_ia32_vunpackb256_mask ((__v32qi)(__m256i)(A),   \
+                                             (int)(imm),               \
+                                             (__v32qi)(__m256i)        \
+                                             (_mm256_undefined_si256 ()),  \
+                                             (__mmask32)(U)))
+
+#define _mm512_unpackb_epi8(A, imm)                                    \
+  ((__m512i) __builtin_ia32_vunpackb512_mask ((__v64qi)(__m512i)(A),   \
+                                             (int)(imm),               \
+                                             (__v64qi)(__m512i)        \
+                                             (_mm512_undefined_si512 ()),  \
+                                             (__mmask64)(-1)))
+
+#define _mm512_mask_unpackb_epi8(W, U, A, imm)                         \
+  ((__m512i) __builtin_ia32_vunpackb512_mask ((__v64qi)(__m512i)(A),   \
+                                             (int)(imm),               \
+                                             (__v64qi)(__m512i)(W),    \
+                                             (__mmask64)(U)))
+
+#define _mm512_maskz_unpackb_epi8(U, A, imm) \
+  ((__m512i) __builtin_ia32_vunpackb512_mask ((__v64qi)(__m512i)(A),   \
+                                             (int)(imm),               \
+                                             (__v64qi)(__m512i)        \
+                                             (_mm512_undefined_si512 ()),  \
+                                             (__mmask64)(U)))
+#endif
+
+
 #ifdef __DISABLE_AVX10V2AUX__
 #undef __DISABLE_AVX10V2AUX__
 #pragma GCC pop_options
diff --git a/gcc/config/i386/i386-builtin-types.def 
b/gcc/config/i386/i386-builtin-types.def
index bc72594a124..677f1f55c3b 100644
--- a/gcc/config/i386/i386-builtin-types.def
+++ b/gcc/config/i386/i386-builtin-types.def
@@ -1490,6 +1490,9 @@ DEF_FUNCTION_TYPE (V64QI, V32QI, V64QI, UDI)
 DEF_FUNCTION_TYPE (VOID, PV8QI, V16QI)
 DEF_FUNCTION_TYPE (VOID, PV16QI, V32QI)
 DEF_FUNCTION_TYPE (VOID, PV32QI, V64QI)
+DEF_FUNCTION_TYPE (V16QI, V16QI, INT, V16QI, UHI)
+DEF_FUNCTION_TYPE (V32QI, V32QI, INT, V32QI, USI)
+DEF_FUNCTION_TYPE (V64QI, V64QI, INT, V64QI, UDI)


 # SM4 builtins
diff --git a/gcc/config/i386/i386-builtin.def b/gcc/config/i386/i386-builtin.def
index bc773c3b1ca..611997fe666 100644
--- a/gcc/config/i386/i386-builtin.def
+++ b/gcc/config/i386/i386-builtin.def
@@ -530,6 +530,9 @@ BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, 
CODE_FOR_vcvtbf82bf4sv64qi_store, "__buil
 BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vcvthf82bf4sv16qi_store, 
"__builtin_ia32_vcvthf82bf4s128mem", IX86_BUILTIN_VCVTHF82BF4S128_MEM, UNKNOWN, 
(int) VOID_FTYPE_PV8QI_V16QI)
 BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vcvthf82bf4sv32qi_store, 
"__builtin_ia32_vcvthf82bf4s256mem", IX86_BUILTIN_VCVTHF82BF4S256_MEM, UNKNOWN, 
(int) VOID_FTYPE_PV16QI_V32QI)
 BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vcvthf82bf4sv64qi_store, 
"__builtin_ia32_vcvthf82bf4s512mem", IX86_BUILTIN_VCVTHF82BF4S512_MEM, UNKNOWN, 
(int) VOID_FTYPE_PV32QI_V64QI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vpmovssdbv4si_mask_store_2, 
"__builtin_ia32_vpmovssdb128mem_mask", IX86_BUILTIN_VPMOVSSDB128_MEM, UNKNOWN, 
(int) VOID_FTYPE_PUSI_V4SI_UQI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vpmovssdbv8si_mask_store_2, 
"__builtin_ia32_vpmovssdb256mem_mask", IX86_BUILTIN_VPMOVSSDB256_MEM, UNKNOWN, 
(int) VOID_FTYPE_PUDI_V8SI_UQI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vpmovssdbv16si_mask_store_1, 
"__builtin_ia32_vpmovssdb512mem_mask", IX86_BUILTIN_VPMOVSSDB512_MEM, UNKNOWN, 
(int) VOID_FTYPE_PV16QI_V16SI_UHI)

 BDESC_END (SPECIAL_ARGS, PURE_ARGS)

@@ -3435,6 +3438,13 @@ BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, 
CODE_FOR_vcvtbf62hf8v64qi_mask, "__builti
 BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vcvthf62hf8v16qi_mask, 
"__builtin_ia32_vcvthf62hf8128_mask", IX86_BUILTIN_VCVTHF62HF8128_MASK, 
UNKNOWN, (int) V16QI_FTYPE_V16QI_V16QI_UHI)
 BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vcvthf62hf8v32qi_mask, 
"__builtin_ia32_vcvthf62hf8256_mask", IX86_BUILTIN_VCVTHF62HF8256_MASK, 
UNKNOWN, (int) V32QI_FTYPE_V32QI_V32QI_USI)
 BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vcvthf62hf8v64qi_mask, 
"__builtin_ia32_vcvthf62hf8512_mask", IX86_BUILTIN_VCVTHF62HF8512_MASK, 
UNKNOWN, (int) V64QI_FTYPE_V64QI_V64QI_UDI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vunpackbv16qi_mask, 
"__builtin_ia32_vunpackb128_mask", IX86_BUILTIN_VUNPACKB128_MASK, UNKNOWN, 
(int) V16QI_FTYPE_V16QI_INT_V16QI_UHI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vunpackbv32qi_mask, 
"__builtin_ia32_vunpackb256_mask", IX86_BUILTIN_VUNPACKB256_MASK, UNKNOWN, 
(int) V32QI_FTYPE_V32QI_INT_V32QI_USI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vunpackbv64qi_mask, 
"__builtin_ia32_vunpackb512_mask", IX86_BUILTIN_VUNPACKB512_MASK, UNKNOWN, 
(int) V64QI_FTYPE_V64QI_INT_V64QI_UDI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vpmovssdbv4si_mask, 
"__builtin_ia32_vpmovssdb128_mask", IX86_BUILTIN_VPMOVSSDB128_MASK, UNKNOWN, 
(int) V16QI_FTYPE_V4SI_V16QI_UQI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vpmovssdbv8si_mask, 
"__builtin_ia32_vpmovssdb256_mask", IX86_BUILTIN_VPMOVSSDB256_MASK, UNKNOWN, 
(int) V16QI_FTYPE_V8SI_V16QI_UQI)
+BDESC (0, OPTION_MASK_ISA2_AVX10V2AUX, CODE_FOR_vpmovssdbv16si_mask, 
"__builtin_ia32_vpmovssdb512_mask", IX86_BUILTIN_VPMOVSSDB512_MASK, UNKNOWN, 
(int) V16QI_FTYPE_V16SI_V16QI_UHI)
+

 /* Builtins with rounding support.  */
 BDESC_END (ARGS, ROUND_ARGS)
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index aea2ac7b31a..e9b9b2c9ff5 100644
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -13321,6 +13321,9 @@ ix86_expand_args_builtin (const struct 
builtin_description *d,
     case V4DF_FTYPE_V8DF_INT_V4DF_UQI:
     case V4SF_FTYPE_V16SF_INT_V4SF_UQI:
     case V8DI_FTYPE_V8DI_INT_V8DI_UQI:
+    case V16QI_FTYPE_V16QI_INT_V16QI_UHI:
+    case V32QI_FTYPE_V32QI_INT_V32QI_USI:
+    case V64QI_FTYPE_V64QI_INT_V64QI_UDI:
       nargs = 4;
       mask_pos = 2;
       nargs_constant = 1;
@@ -13572,6 +13575,12 @@ ix86_expand_args_builtin (const struct 
builtin_description *d,
                error ("the last argument must be a 5-bit immediate");
                return const0_rtx;

+             case CODE_FOR_vunpackbv16qi_mask:
+             case CODE_FOR_vunpackbv32qi_mask:
+             case CODE_FOR_vunpackbv64qi_mask:
+               error ("the last argument must be a 5-bit immediate in range 
8-63");
+               return const0_rtx;
+
              default:
                switch (nargs_constant)
                  {
diff --git a/gcc/config/i386/predicates.md b/gcc/config/i386/predicates.md
index 6a2ced03604..e06190cfdca 100644
--- a/gcc/config/i386/predicates.md
+++ b/gcc/config/i386/predicates.md
@@ -958,6 +958,11 @@
   (and (match_code "const_int")
        (match_test "IN_RANGE (INTVAL (op), 0, 63)")))

+;; Match 8 to 63.
+(define_predicate "const_8_to_63_operand"
+  (and (match_code "const_int")
+       (match_test "IN_RANGE (INTVAL (op), 8, 63)")))
+
 ;; Match 0 to 127.
 (define_predicate "const_0_to_127_operand"
   (and (match_code "const_int")
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 6fd38e9273b..901da35bef9 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -279,6 +279,8 @@
   UNSPEC_VCVTHF82HF6S
   UNSPEC_VCVTBF62HF8
   UNSPEC_VCVTHF62HF8
+  UNSPEC_VUNPACKB
+  UNSPEC_VPMOVSSDB
 ])

 (define_c_enum "unspecv" [
@@ -34528,3 +34530,150 @@
   "vcvt<convertfp62hf8>\t{%1, %0<mask_operand2>|%0<mask_operand2>, %1}"
   [(set_attr "prefix" "evex")
    (set_attr "mode" "<sseinsnmode>")])
+
+;; VUNPACKB - Sub-byte element extraction
+
+(define_insn "vunpackb<mode><mask_name>"
+  [(set (match_operand:AUXFP6CVT_MODE 0 "register_operand" "=v")
+       (unspec:AUXFP6CVT_MODE
+         [(match_operand:AUXFP6CVT_MODE 1 "nonimmediate_operand" "vm")
+     (match_operand:QI 2 "const_8_to_63_operand")]
+         UNSPEC_VUNPACKB))]
+  "TARGET_AVX10V2AUX"
+  "vunpackb\t{%2, %1, %0<mask_operand3>|%0<mask_operand3>, %1, %2}"
+  [(set_attr "prefix" "evex")
+   (set_attr "mode" "<sseinsnmode>")])
+
+;; VPMOVSSDB - Symmetric signed saturation narrow (32-bit to 8-bit)
+
+(define_mode_iterator VPMOVSSDB_PART [V4SI V8SI])
+(define_mode_iterator VPMOVSSDB_MODES [V4SI V8SI V16SI])
+(define_mode_attr pmovssdb_out
+  [(V4SI "V4QI") (V8SI "V8QI") (V16SI "V16QI")])
+(define_mode_attr pmovssdb_pad
+  [(V4SI "V12QI") (V8SI "V8QI")])
+(define_mode_attr pmovssdbmask
+  [(V4SI "QI") (V8SI "QI") (V16SI "HI")])
+
+(define_insn "*vpmovssdb<mode>"
+  [(set (match_operand:V16QI 0 "register_operand" "=v")
+       (vec_concat:V16QI
+         (unspec:<pmovssdb_out>
+           [(match_operand:VPMOVSSDB_PART 1 "register_operand" "v")]
+           UNSPEC_VPMOVSSDB)
+         (match_operand:<pmovssdb_pad> 2 "const0_operand")))]
+  "TARGET_AVX10V2AUX"
+  "vpmovssdb\t{%1, %0|%0, %1}"
+  [(set_attr "prefix" "evex")
+   (set_attr "mode" "<sseinsnmode>")])
+
+(define_expand "vpmovssdbv4si_mask"
+  [(set (match_operand:V16QI 0 "register_operand")
+       (vec_concat:V16QI
+         (vec_merge:V4QI
+           (unspec:V4QI
+             [(match_operand:V4SI 1 "register_operand")]
+             UNSPEC_VPMOVSSDB)
+           (vec_select:V4QI
+             (match_operand:V16QI 2 "nonimm_or_0_operand")
+             (parallel [(const_int 0) (const_int 1)
+                        (const_int 2) (const_int 3)]))
+           (match_operand:QI 3 "register_operand"))
+         (match_dup 4)))]
+  "TARGET_AVX10V2AUX"
+  "operands[4] = CONST0_RTX (V12QImode);")
+
+(define_insn "*vpmovssdbv4si_mask"
+  [(set (match_operand:V16QI 0 "register_operand" "=v")
+       (vec_concat:V16QI
+         (vec_merge:V4QI
+           (unspec:V4QI
+             [(match_operand:V4SI 1 "register_operand" "v")]
+             UNSPEC_VPMOVSSDB)
+           (vec_select:V4QI
+             (match_operand:V16QI 2 "nonimm_or_0_operand" "0C")
+             (parallel [(const_int 0) (const_int 1)
+                        (const_int 2) (const_int 3)]))
+           (match_operand:QI 3 "register_operand" "Yk"))
+         (match_operand:V12QI 4 "const0_operand")))]
+  "TARGET_AVX10V2AUX"
+  "vpmovssdb\t{%1, %0%{%3%}%N2|%0%{%3%}%N2, %1}"
+  [(set_attr "prefix" "evex")
+   (set_attr "mode" "TI")])
+
+(define_expand "vpmovssdbv8si_mask"
+  [(set (match_operand:V16QI 0 "register_operand")
+       (vec_concat:V16QI
+         (vec_merge:V8QI
+           (unspec:V8QI
+             [(match_operand:V8SI 1 "register_operand")]
+             UNSPEC_VPMOVSSDB)
+           (vec_select:V8QI
+             (match_operand:V16QI 2 "nonimm_or_0_operand")
+             (parallel [(const_int 0) (const_int 1)
+                        (const_int 2) (const_int 3)
+                        (const_int 4) (const_int 5)
+                        (const_int 6) (const_int 7)]))
+           (match_operand:QI 3 "register_operand"))
+         (match_dup 4)))]
+  "TARGET_AVX10V2AUX"
+  "operands[4] = CONST0_RTX (V8QImode);")
+
+(define_insn "*vpmovssdbv8si_mask"
+  [(set (match_operand:V16QI 0 "register_operand" "=v")
+       (vec_concat:V16QI
+         (vec_merge:V8QI
+           (unspec:V8QI
+             [(match_operand:V8SI 1 "register_operand" "v")]
+             UNSPEC_VPMOVSSDB)
+           (vec_select:V8QI
+             (match_operand:V16QI 2 "nonimm_or_0_operand" "0C")
+             (parallel [(const_int 0) (const_int 1)
+                        (const_int 2) (const_int 3)
+                        (const_int 4) (const_int 5)
+                        (const_int 6) (const_int 7)]))
+           (match_operand:QI 3 "register_operand" "Yk"))
+         (match_operand:V8QI 4 "const0_operand")))]
+  "TARGET_AVX10V2AUX"
+  "vpmovssdb\t{%1, %0%{%3%}%N2|%0%{%3%}%N2, %1}"
+  [(set_attr "prefix" "evex")
+   (set_attr "mode" "OI")])
+
+(define_insn "vpmovssdbv16si<mask_name>"
+  [(set (match_operand:V16QI 0 "register_operand" "=v")
+       (unspec:V16QI
+         [(match_operand:V16SI 1 "register_operand" "v")]
+         UNSPEC_VPMOVSSDB))]
+  "TARGET_AVX10V2AUX"
+  "vpmovssdb\t{%1, %0<mask_operand2>|%0<mask_operand2>, %1}"
+  [(set_attr "prefix" "evex")
+   (set_attr "mode" "XI")])
+
+(define_insn "vpmovssdb<mode>_mask_store_1"
+  [(set (match_operand:<pmovssdb_out> 0 "memory_operand" "=m")
+       (vec_merge:<pmovssdb_out>
+         (unspec:<pmovssdb_out>
+           [(match_operand:VPMOVSSDB_MODES 1 "register_operand" "v")]
+           UNSPEC_VPMOVSSDB)
+         (match_dup 0)
+         (match_operand:<pmovssdbmask> 2 "register_operand" "Yk")))]
+  "TARGET_AVX10V2AUX"
+  "vpmovssdb\t{%1, %0%{%2%}|%0%{%2%}, %1}"
+  [(set_attr "type" "ssemov")
+   (set_attr "memory" "store")
+   (set_attr "prefix" "evex")
+   (set_attr "mode" "<sseinsnmode>")])
+
+(define_expand "vpmovssdb<mode>_mask_store_2"
+  [(match_operand:<pmovssdb_out> 0 "memory_operand")
+   (unspec:<pmovssdb_out>
+     [(match_operand:VPMOVSSDB_PART 1 "register_operand")]
+     UNSPEC_VPMOVSSDB)
+   (match_operand:<pmovssdbmask> 2 "register_operand")]
+  "TARGET_AVX10V2AUX"
+{
+  operands[0] = adjust_address_nv (operands[0], <pmovssdb_out>mode, 0);
+  emit_insn (gen_vpmovssdb<mode>_mask_store_1 (operands[0], operands[1],
+                                             operands[2]));
+  DONE;
+})
diff --git a/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1i.c 
b/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1i.c
new file mode 100644
index 00000000000..d815502308d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1i.c
@@ -0,0 +1,36 @@
+/* { dg-do compile } */
+/* { dg-options "-mavx10v2aux -O2 -fno-fuse-ops-with-volatile-access" } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%xmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%xmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%xmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}\{z\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%ymm\[0-9\]+\[^\n\r]*%ymm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%ymm\[0-9\]+\[^\n\r]*%ymm\[0-9\]+\{%k\[1-7\]\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%ymm\[0-9\]+\[^\n\r]*%ymm\[0-9\]+\{%k\[1-7\]\}\{z\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%zmm\[0-9\]+\[^\n\r]*%zmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%zmm\[0-9\]+\[^\n\r]*%zmm\[0-9\]+\{%k\[1-7\]\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vunpackb\[ 
\\t\]+\[^\{\n\]*%zmm\[0-9\]+\[^\n\r]*%zmm\[0-9\]+\{%k\[1-7\]\}\{z\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+
+#include <immintrin.h>
+
+volatile __m128i x128i;
+volatile __m256i x256i;
+volatile __m512i x512i;
+volatile __mmask16 m16;
+volatile __mmask32 m32;
+volatile __mmask64 m64;
+
+void extern
+avx10v2aux_vunpackb_test (void)
+{
+  x128i = _mm_unpackb_epi8 (x128i, 8);
+  x128i = _mm_mask_unpackb_epi8 (x128i, m16, x128i, 8);
+  x128i = _mm_maskz_unpackb_epi8 (m16, x128i, 8);
+
+  x256i = _mm256_unpackb_epi8 (x256i, 16);
+  x256i = _mm256_mask_unpackb_epi8 (x256i, m32, x256i, 16);
+  x256i = _mm256_maskz_unpackb_epi8 (m32, x256i, 16);
+
+  x512i = _mm512_unpackb_epi8 (x512i, 32);
+  x512i = _mm512_mask_unpackb_epi8 (x512i, m64, x512i, 32);
+  x512i = _mm512_maskz_unpackb_epi8 (m64, x512i, 32);
+}
diff --git a/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1j.c 
b/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1j.c
new file mode 100644
index 00000000000..630968a7803
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1j.c
@@ -0,0 +1,43 @@
+/* { dg-do compile } */
+/* { dg-options "-mavx10v2aux -O2 -fno-fuse-ops-with-volatile-access" } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%xmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%xmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%xmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}\{z\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%ymm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%ymm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%ymm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}\{z\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%zmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%zmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ 
\\t\]+\[^\{\n\]*%zmm\[0-9\]+\[^\n\r]*%xmm\[0-9\]+\{%k\[1-7\]\}\{z\}(?:\n|\[ 
\\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ \\t\]+%xmm\[0-9\]+, 
\\(\[^\{\n\]*\\)\{%k\[1-7\]\}(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ \\t\]+%ymm\[0-9\]+, 
\\(\[^\{\n\]*\\)\{%k\[1-7\]\}(?:\n|\[ \\t\]+#)" 1 } } */
+/* { dg-final { scan-assembler-times "vpmovssdb\[ \\t\]+%zmm\[0-9\]+, 
\\(\[^\{\n\]*\\)\{%k\[1-7\]\}(?:\n|\[ \\t\]+#)" 1 } } */
+
+#include <immintrin.h>
+
+volatile __m128i x128i;
+volatile __m256i x256i;
+volatile __m512i x512i;
+volatile __m128i res128i;
+volatile __mmask8 m8;
+volatile __mmask16 m16;
+char *p;
+
+void extern
+avx10v2aux_vpmovssdb_test (void)
+{
+  res128i = _mm_cvtss_epi32_epi8 (x128i);
+  res128i = _mm_mask_cvtss_epi32_epi8 (res128i, m8, x128i);
+  res128i = _mm_maskz_cvtss_epi32_epi8 (m8, x128i);
+  _mm_mask_cvtss_epi32_storeu_epi8 ((void *) p, m8, x128i);
+
+  res128i = _mm256_cvtss_epi32_epi8 (x256i);
+  res128i = _mm256_mask_cvtss_epi32_epi8 (res128i, m8, x256i);
+  res128i = _mm256_maskz_cvtss_epi32_epi8 (m8, x256i);
+  _mm256_mask_cvtss_epi32_storeu_epi8 ((void *) p, m8, x256i);
+
+  res128i = _mm512_cvtss_epi32_epi8 (x512i);
+  res128i = _mm512_mask_cvtss_epi32_epi8 (res128i, m16, x512i);
+  res128i = _mm512_maskz_cvtss_epi32_epi8 (m16, x512i);
+  _mm512_mask_cvtss_epi32_storeu_epi8 ((void *) p, m16, x512i);
+}
diff --git a/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1k.c 
b/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1k.c
new file mode 100644
index 00000000000..5a004325bcb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/avx10v2aux-convert-1k.c
@@ -0,0 +1,29 @@
+/* Exercise the non-__OPTIMIZE__ (macro) path of the vunpackb intrinsics.  */
+/* { dg-do compile } */
+/* { dg-options "-mavx10v2aux -O0" } */
+/* { dg-final { scan-assembler-times "vunpackb\[ \\t\]" 9 } } */
+
+#include <immintrin.h>
+
+volatile __m128i x128i;
+volatile __m256i x256i;
+volatile __m512i x512i;
+volatile __mmask16 m16;
+volatile __mmask32 m32;
+volatile __mmask64 m64;
+
+void extern
+avx10v2aux_vunpackb_noopt_test (void)
+{
+  x128i = _mm_unpackb_epi8 (x128i, 8);
+  x128i = _mm_mask_unpackb_epi8 (x128i, m16, x128i, 8);
+  x128i = _mm_maskz_unpackb_epi8 (m16, x128i, 8);
+
+  x256i = _mm256_unpackb_epi8 (x256i, 16);
+  x256i = _mm256_mask_unpackb_epi8 (x256i, m32, x256i, 16);
+  x256i = _mm256_maskz_unpackb_epi8 (m32, x256i, 16);
+
+  x512i = _mm512_unpackb_epi8 (x512i, 32);
+  x512i = _mm512_mask_unpackb_epi8 (x512i, m64, x512i, 32);
+  x512i = _mm512_maskz_unpackb_epi8 (m64, x512i, 32);
+}
diff --git a/gcc/testsuite/lib/target-supports.exp 
b/gcc/testsuite/lib/target-supports.exp
index 5e48974078a..d5c48957c9c 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -11602,6 +11602,9 @@ proc check_effective_target_avx10v2aux { } {
        foo ()
        {
          __asm__ volatile ("vcvtps2bf8\t{%%xmm1, %%xmm0|%%xmm0, %%xmm1}");
+         __asm__ volatile ("vcvtbf82ps\t{%%xmm1, %%xmm0|%%xmm0, %%xmm1}");
+         __asm__ volatile ("vunpackb\t$1, %%ymm1, %%ymm0");
+         __asm__ volatile ("vpmovssdb\t{%%zmm1, %%xmm0|%%xmm0, %%zmm1}");
        }
     } "-mavx10v2aux" ]
 }
--
2.34.1


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