Force_operand issues an ICE when input
is (subreg:DI (us_truncate:V8QI)), it's probably because it's an
invalid rtx, So refine backend patterns for that.

Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}.
Ready push to trunk.

gcc/ChangeLog:

        PR target/117318
        * config/i386/sse.md (*avx512vl_<code>v2div2qi2_mask_store_1):
        Rename to ..
        (avx512vl_<code>v2div2qi2_mask_store_1): .. this.
        (avx512vl_<code>v2div2qi2_mask_store_2): Change to
        define_expand.
        (*avx512vl_<code><mode>v4qi2_mask_store_1): Rename to ..
        (avx512vl_<code><mode>v4qi2_mask_store_1): .. this.
        (avx512vl_<code><mode>v4qi2_mask_store_2): Change to
        define_expand.
        (*avx512vl_<code><mode>v8qi2_mask_store_1): Rename to ..
        (avx512vl_<code><mode>v8qi2_mask_store_1): .. this.
        (avx512vl_<code><mode>v8qi2_mask_store_2): Change to
        define_expand.
        (*avx512vl_<code><mode>v4hi2_mask_store_1): Rename to ..
        (avx512vl_<code><mode>v4hi2_mask_store_1): .. this.
        (avx512vl_<code><mode>v4hi2_mask_store_2): Change to
        define_expand.
        (*avx512vl_<code>v2div2hi2_mask_store_1): Rename to ..
        (avx512vl_<code>v2div2hi2_mask_store_1): .. this.
        (avx512vl_<code>v2div2hi2_mask_store_2): Change to
        define_expand.
        (*avx512vl_<code>v2div2si2_mask_store_1): Rename to ..
        (avx512vl_<code>v2div2si2_mask_store_1): .. this.
        (avx512vl_<code>v2div2si2_mask_store_2): Change to
        define_expand.
        (*avx512f_<code>v8div16qi2_mask_store_1): Rename to ..
        (avx512f_<code>v8div16qi2_mask_store_1): .. this.
        (avx512f_<code>v8div16qi2_mask_store_2): Change to
        define_expand.

gcc/testsuite/ChangeLog:

        * gcc.target/i386/pr117318.c: New test.
---
 gcc/config/i386/sse.md                   | 268 +++++++++--------------
 gcc/testsuite/gcc.target/i386/pr117318.c |  12 +
 2 files changed, 110 insertions(+), 170 deletions(-)
 create mode 100644 gcc/testsuite/gcc.target/i386/pr117318.c

diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index 2345015db1b..36f8567b66f 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -15439,7 +15439,7 @@ (define_insn "*avx512vl_<code>v2div2qi2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512vl_<code>v2div2qi2_mask_store_1"
+(define_insn "avx512vl_<code>v2div2qi2_mask_store_1"
   [(set (match_operand:V2QI 0 "memory_operand" "=m")
          (vec_merge:V2QI
            (any_truncate:V2QI
@@ -15453,28 +15453,19 @@ (define_insn "*avx512vl_<code>v2div2qi2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512vl_<code>v2div2qi2_mask_store_2"
-  [(set (match_operand:HI 0 "memory_operand")
-       (subreg:HI
-         (vec_merge:V2QI
-           (any_truncate:V2QI
-             (match_operand:V2DI 1 "register_operand"))
-           (vec_select:V2QI
-             (subreg:V4QI
-               (vec_concat:V2HI
-                 (match_dup 0)
-                 (const_int 0)) 0)
-             (parallel [(const_int 0) (const_int 1)]))
-           (match_operand:QI 2 "register_operand")) 0))]
-  "TARGET_AVX512VL && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V2QI
-         (any_truncate:V2QI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V2QImode, 0);")
+(define_expand "avx512vl_<code>v2div2qi2_mask_store_2"
+  [(match_operand:HI 0 "memory_operand")
+   (any_truncate:V2QI
+     (match_operand:V2DI 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512VL"
+{
+  operands[0] = adjust_address_nv (operands[0], V2QImode, 0);
+  emit_insn (gen_avx512vl_<code>v2div2qi2_mask_store_1 (operands[0],
+                                                       operands[1],
+                                                       operands[2]));
+  DONE;
+})
 
 (define_insn "*avx512vl_<code><mode>v4qi2_store_1"
   [(set (match_operand:V4QI 0 "memory_operand" "=m")
@@ -15543,7 +15534,7 @@ (define_insn "*avx512vl_<code><mode>v4qi2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512vl_<code><mode>v4qi2_mask_store_1"
+(define_insn "avx512vl_<code><mode>v4qi2_mask_store_1"
   [(set (match_operand:V4QI 0 "memory_operand" "=m")
        (vec_merge:V4QI
          (any_truncate:V4QI
@@ -15557,29 +15548,19 @@ (define_insn 
"*avx512vl_<code><mode>v4qi2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512vl_<code><mode>v4qi2_mask_store_2"
-  [(set (match_operand:SI 0 "memory_operand")
-       (subreg:SI
-         (vec_merge:V4QI
-           (any_truncate:V4QI
-             (match_operand:VI4_128_8_256 1 "register_operand"))
-           (vec_select:V4QI
-             (subreg:V8QI
-               (vec_concat:V2SI
-                 (match_dup 0)
-                 (const_int 0)) 0)
-             (parallel [(const_int 0) (const_int 1)
-                        (const_int 2) (const_int 3)]))
-           (match_operand:QI 2 "register_operand")) 0))]
-  "TARGET_AVX512VL && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V4QI
-         (any_truncate:V4QI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V4QImode, 0);")
+(define_expand "avx512vl_<code><mode>v4qi2_mask_store_2"
+  [(match_operand:SI 0 "memory_operand")
+   (any_truncate:V4QI
+     (match_operand:VI4_128_8_256 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512VL"
+{
+  operands[0] = adjust_address_nv (operands[0], V4QImode, 0);
+  emit_insn (gen_avx512vl_<code><mode>v4qi2_mask_store_1 (operands[0],
+                                                         operands[1],
+                                                         operands[2]));
+  DONE;
+})
 
 (define_mode_iterator VI2_128_BW_4_256
   [(V8HI "TARGET_AVX512BW") V8SI])
@@ -15651,7 +15632,7 @@ (define_insn "*avx512vl_<code><mode>v8qi2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512vl_<code><mode>v8qi2_mask_store_1"
+(define_insn "avx512vl_<code><mode>v8qi2_mask_store_1"
   [(set (match_operand:V8QI 0 "memory_operand" "=m")
        (vec_merge:V8QI
          (any_truncate:V8QI
@@ -15665,31 +15646,19 @@ (define_insn 
"*avx512vl_<code><mode>v8qi2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512vl_<code><mode>v8qi2_mask_store_2"
-  [(set (match_operand:DI 0 "memory_operand")
-       (subreg:DI
-         (vec_merge:V8QI
-           (any_truncate:V8QI
-             (match_operand:VI2_128_BW_4_256 1 "register_operand"))
-           (vec_select:V8QI
-             (subreg:V16QI
-               (vec_concat:V2DI
-                 (match_dup 0)
-                 (const_int 0)) 0)
-             (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 2 "register_operand")) 0))]
-  "TARGET_AVX512VL && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V8QI
-         (any_truncate:V8QI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V8QImode, 0);")
+(define_expand "avx512vl_<code><mode>v8qi2_mask_store_2"
+  [(match_operand:DI 0 "memory_operand")
+   (any_truncate:V8QI
+     (match_operand:VI2_128_BW_4_256 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512VL"
+{
+  operands[0] = adjust_address_nv (operands[0], V8QImode, 0);
+  emit_insn (gen_avx512vl_<code><mode>v8qi2_mask_store_1 (operands[0],
+                                                         operands[1],
+                                                         operands[2]));
+  DONE;
+})
 
 (define_mode_iterator PMOV_SRC_MODE_4 [(V4DI "TARGET_AVX2") V2DI V4SI])
 (define_mode_attr pmov_dst_4
@@ -15817,7 +15786,7 @@ (define_insn "*avx512vl_<code><mode>v4hi2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512vl_<code><mode>v4hi2_mask_store_1"
+(define_insn "avx512vl_<code><mode>v4hi2_mask_store_1"
   [(set (match_operand:V4HI 0 "memory_operand" "=m")
        (vec_merge:V4HI
          (any_truncate:V4HI
@@ -15835,30 +15804,19 @@ (define_insn 
"*avx512vl_<code><mode>v4hi2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512vl_<code><mode>v4hi2_mask_store_2"
-  [(set (match_operand:DI 0 "memory_operand")
-       (subreg:DI
-         (vec_merge:V4HI
-           (any_truncate:V4HI
-             (match_operand:VI4_128_8_256 1 "register_operand"))
-           (vec_select:V4HI
-             (subreg:V8HI
-               (vec_concat:V2DI
-                 (match_dup 0)
-                 (const_int 0)) 0)
-             (parallel [(const_int 0) (const_int 1)
-                        (const_int 2) (const_int 3)]))
-           (match_operand:QI 2 "register_operand")) 0))]
-  "TARGET_AVX512VL && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V4HI
-         (any_truncate:V4HI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V4HImode, 0);")
-
+(define_expand "avx512vl_<code><mode>v4hi2_mask_store_2"
+  [(match_operand:DI 0 "memory_operand")
+   (any_truncate:V4HI
+     (match_operand:VI4_128_8_256 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512VL"
+{
+  operands[0] = adjust_address_nv (operands[0], V4HImode, 0);
+  emit_insn (gen_avx512vl_<code><mode>v4hi2_mask_store_1 (operands[0],
+                                                         operands[1],
+                                                         operands[2]));
+  DONE;
+})
 
 (define_insn "*avx512vl_<code>v2div2hi2_store_1"
   [(set (match_operand:V2HI 0 "memory_operand" "=m")
@@ -15919,7 +15877,7 @@ (define_insn "*avx512vl_<code>v2div2hi2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512vl_<code>v2div2hi2_mask_store_1"
+(define_insn "avx512vl_<code>v2div2hi2_mask_store_1"
   [(set (match_operand:V2HI 0 "memory_operand" "=m")
        (vec_merge:V2HI
          (any_truncate:V2HI
@@ -15933,28 +15891,19 @@ (define_insn "*avx512vl_<code>v2div2hi2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512vl_<code>v2div2hi2_mask_store_2"
-  [(set (match_operand:SI 0 "memory_operand")
-       (subreg:SI
-         (vec_merge:V2HI
-           (any_truncate:V2HI
-             (match_operand:V2DI 1 "register_operand"))
-           (vec_select:V2HI
-             (subreg:V4HI
-               (vec_concat:V2SI
-                 (match_dup 0)
-                 (const_int 0)) 0)
-             (parallel [(const_int 0) (const_int 1)]))
-           (match_operand:QI 2 "register_operand")) 0))]
-  "TARGET_AVX512VL && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V2HI
-         (any_truncate:V2HI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V2HImode, 0);")
+(define_expand "avx512vl_<code>v2div2hi2_mask_store_2"
+  [(match_operand:SI 0 "memory_operand")
+   (any_truncate:V2HI
+    (match_operand:V2DI 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512VL"
+{
+  operands[0] = adjust_address_nv (operands[0], V2HImode, 0);
+  emit_insn (gen_avx512vl_<code>v2div2hi2_mask_store_1 (operands[0],
+                                                       operands[1],
+                                                       operands[2]));
+  DONE;
+})
 
 (define_expand "truncv2div2si2"
   [(set (match_operand:V2SI 0 "register_operand")
@@ -16074,7 +16023,7 @@ (define_insn "*avx512vl_<code>v2div2si2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512vl_<code>v2div2si2_mask_store_1"
+(define_insn "avx512vl_<code>v2div2si2_mask_store_1"
   [(set (match_operand:V2SI 0 "memory_operand" "=m")
        (vec_merge:V2SI
          (any_truncate:V2SI
@@ -16088,28 +16037,19 @@ (define_insn "*avx512vl_<code>v2div2si2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512vl_<code>v2div2si2_mask_store_2"
-  [(set (match_operand:DI 0 "memory_operand")
-       (subreg:DI
-         (vec_merge:V2SI
-           (any_truncate:V2SI
-             (match_operand:V2DI 1 "register_operand"))
-           (vec_select:V2SI
-             (subreg:V4SI
-               (vec_concat:V2DI
-                 (match_dup 0)
-                 (const_int 0)) 0)
-             (parallel [(const_int 0) (const_int 1)]))
-           (match_operand:QI 2 "register_operand")) 0))]
-  "TARGET_AVX512VL && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V2SI
-         (any_truncate:V2SI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V2SImode, 0);")
+(define_expand "avx512vl_<code>v2div2si2_mask_store_2"
+  [(match_operand:DI 0 "memory_operand")
+   (any_truncate:V2SI
+    (match_operand:V2DI 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512VL"
+{
+  operands[0] = adjust_address_nv (operands[0], V2SImode, 0);
+  emit_insn (gen_avx512vl_<code>v2div2si2_mask_store_1 (operands[0],
+                                                       operands[1],
+                                                       operands[2]));
+  DONE;
+})
 
 (define_expand "truncv8div8qi2"
   [(set (match_operand:V8QI 0 "register_operand")
@@ -16208,7 +16148,7 @@ (define_insn "*avx512f_<code>v8div16qi2_mask_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn "*avx512f_<code>v8div16qi2_mask_store_1"
+(define_insn "avx512f_<code>v8div16qi2_mask_store_1"
   [(set (match_operand:V8QI 0 "memory_operand" "=m")
        (vec_merge:V8QI
          (any_truncate:V8QI
@@ -16222,31 +16162,19 @@ (define_insn "*avx512f_<code>v8div16qi2_mask_store_1"
    (set_attr "prefix" "evex")
    (set_attr "mode" "TI")])
 
-(define_insn_and_split "avx512f_<code>v8div16qi2_mask_store_2"
-  [(set (match_operand:DI 0 "memory_operand")
-       (subreg:DI
-         (vec_merge:V8QI
-         (any_truncate:V8QI
-           (match_operand:V8DI 1 "register_operand"))
-         (vec_select:V8QI
-           (subreg:V16QI
-             (vec_concat:V2DI
-               (match_dup 0)
-               (const_int 0)) 0)
-           (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 2 "register_operand")) 0))]
-  "TARGET_AVX512F && TARGET_EVEX512 && ix86_pre_reload_split ()"
-  "#"
-  "&& 1"
-  [(set (match_dup 0)
-       (vec_merge:V8QI
-         (any_truncate:V8QI (match_dup 1))
-         (match_dup 0)
-         (match_dup 2)))]
-  "operands[0] = adjust_address_nv (operands[0], V8QImode, 0);")
+(define_expand "avx512f_<code>v8div16qi2_mask_store_2"
+  [(match_operand:DI 0 "memory_operand")
+   (any_truncate:V8QI
+    (match_operand:V8DI 1 "register_operand"))
+   (match_operand:QI 2 "register_operand")]
+  "TARGET_AVX512F && TARGET_EVEX512"
+{
+  operands[0] = adjust_address_nv (operands[0], V8QImode, 0);
+  emit_insn (gen_avx512f_<code>v8div16qi2_mask_store_1 (operands[0],
+                                                       operands[1],
+                                                       operands[2]));
+  DONE;
+})
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;
diff --git a/gcc/testsuite/gcc.target/i386/pr117318.c 
b/gcc/testsuite/gcc.target/i386/pr117318.c
new file mode 100644
index 00000000000..3d316ad04cf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr117318.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-mavx512f -O" } */
+
+typedef __attribute__((__vector_size__ (64))) long long V;
+unsigned long long x;
+
+unsigned long long
+foo()
+{
+  __builtin_ia32_pmovusqb512mem_mask (&x, (V){8000000000000000}, 255);
+  return x;
+}
-- 
2.34.1

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