Richard Sandiford <richard.sandif...@linaro.org> writes:
> This patch adds support for the SVE bitwise reduction instructions
> (ANDV, ORV and EORV).  It's a fairly mechanical extension of existing
> REDUC_* operators.
>
> Tested on aarch64-linux-gnu (with and without SVE), x86_64-linux-gnu
> and powerpc64le-linux-gnu.

Here's an updated version that applies on top of the recent
removal of REDUC_*_EXPR.  Tested as before.

Thanks,
Richard


2017-11-22  Richard Sandiford  <richard.sandif...@linaro.org>
            Alan Hayward  <alan.hayw...@arm.com>
            David Sherwood  <david.sherw...@arm.com>

gcc/
        * optabs.def (reduc_and_scal_optab, reduc_ior_scal_optab)
        (reduc_xor_scal_optab): New optabs.
        * doc/md.texi (reduc_and_scal_@var{m}, reduc_ior_scal_@var{m})
        (reduc_xor_scal_@var{m}): Document.
        * doc/sourcebuild.texi (vect_logical_reduc): Likewise.
        * internal-fn.def (IFN_REDUC_AND, IFN_REDUC_IOR, IFN_REDUC_XOR): New
        internal functions.
        * fold-const-call.c (fold_const_call): Handle them.
        * tree-vect-loop.c (reduction_fn_for_scalar_code): Return the new
        internal functions for BIT_AND_EXPR, BIT_IOR_EXPR and BIT_XOR_EXPR.
        * config/aarch64/aarch64-sve.md (reduc_<bit_reduc>_scal_<mode>):
        (*reduc_<bit_reduc>_scal_<mode>): New patterns.
        * config/aarch64/iterators.md (UNSPEC_ANDV, UNSPEC_ORV)
        (UNSPEC_XORV): New unspecs.
        (optab): Add entries for them.
        (BITWISEV): New int iterator.
        (bit_reduc_op): New int attributes.

gcc/testsuite/
        * lib/target-supports.exp (check_effective_target_vect_logical_reduc):
        New proc.
        * gcc.dg/vect/vect-reduc-or_1.c: Also run for vect_logical_reduc
        and add an associated scan-dump test.  Prevent vectorization
        of the first two loops.
        * gcc.dg/vect/vect-reduc-or_2.c: Likewise.
        * gcc.target/aarch64/sve_reduc_1.c: Add AND, IOR and XOR reductions.
        * gcc.target/aarch64/sve_reduc_2.c: Likewise.
        * gcc.target/aarch64/sve_reduc_1_run.c: Likewise.
        (INIT_VECTOR): Tweak initial value so that some bits are always set.
        * gcc.target/aarch64/sve_reduc_2_run.c: Likewise.

Index: gcc/optabs.def
===================================================================
--- gcc/optabs.def      2017-11-22 18:05:58.624329338 +0000
+++ gcc/optabs.def      2017-11-22 18:06:54.516061226 +0000
@@ -292,6 +292,9 @@ OPTAB_D (reduc_smin_scal_optab, "reduc_s
 OPTAB_D (reduc_plus_scal_optab, "reduc_plus_scal_$a")
 OPTAB_D (reduc_umax_scal_optab, "reduc_umax_scal_$a")
 OPTAB_D (reduc_umin_scal_optab, "reduc_umin_scal_$a")
+OPTAB_D (reduc_and_scal_optab,  "reduc_and_scal_$a")
+OPTAB_D (reduc_ior_scal_optab,  "reduc_ior_scal_$a")
+OPTAB_D (reduc_xor_scal_optab,  "reduc_xor_scal_$a")
 
 OPTAB_D (sdot_prod_optab, "sdot_prod$I$a")
 OPTAB_D (ssum_widen_optab, "widen_ssum$I$a3")
Index: gcc/doc/md.texi
===================================================================
--- gcc/doc/md.texi     2017-11-22 18:05:58.620520950 +0000
+++ gcc/doc/md.texi     2017-11-22 18:06:54.515109580 +0000
@@ -5244,6 +5244,17 @@ Compute the sum of the elements of a vec
 operand 0 is the scalar result, with mode equal to the mode of the elements of
 the input vector.
 
+@cindex @code{reduc_and_scal_@var{m}} instruction pattern
+@item @samp{reduc_and_scal_@var{m}}
+@cindex @code{reduc_ior_scal_@var{m}} instruction pattern
+@itemx @samp{reduc_ior_scal_@var{m}}
+@cindex @code{reduc_xor_scal_@var{m}} instruction pattern
+@itemx @samp{reduc_xor_scal_@var{m}}
+Compute the bitwise @code{AND}/@code{IOR}/@code{XOR} reduction of the elements
+of a vector of mode @var{m}.  Operand 1 is the vector input and operand 0
+is the scalar result.  The mode of the scalar result is the same as one
+element of @var{m}.
+
 @cindex @code{sdot_prod@var{m}} instruction pattern
 @item @samp{sdot_prod@var{m}}
 @cindex @code{udot_prod@var{m}} instruction pattern
Index: gcc/doc/sourcebuild.texi
===================================================================
--- gcc/doc/sourcebuild.texi    2017-11-22 18:05:58.621473047 +0000
+++ gcc/doc/sourcebuild.texi    2017-11-22 18:06:54.515109580 +0000
@@ -1570,6 +1570,9 @@ Target supports 16- and 8-bytes vectors.
 
 @item vect_sizes_32B_16B
 Target supports 32- and 16-bytes vectors.
+
+@item vect_logical_reduc
+Target supports AND, IOR and XOR reduction on vectors.
 @end table
 
 @subsubsection Thread Local Storage attributes
Index: gcc/internal-fn.def
===================================================================
--- gcc/internal-fn.def 2017-11-22 18:05:51.545487816 +0000
+++ gcc/internal-fn.def 2017-11-22 18:06:54.516061226 +0000
@@ -137,6 +137,12 @@ DEF_INTERNAL_SIGNED_OPTAB_FN (REDUC_MAX,
                              reduc_smax_scal, reduc_umax_scal, unary)
 DEF_INTERNAL_SIGNED_OPTAB_FN (REDUC_MIN, ECF_CONST | ECF_NOTHROW, first,
                              reduc_smin_scal, reduc_umin_scal, unary)
+DEF_INTERNAL_OPTAB_FN (REDUC_AND, ECF_CONST | ECF_NOTHROW,
+                      reduc_and_scal, unary)
+DEF_INTERNAL_OPTAB_FN (REDUC_IOR, ECF_CONST | ECF_NOTHROW,
+                      reduc_ior_scal, unary)
+DEF_INTERNAL_OPTAB_FN (REDUC_XOR, ECF_CONST | ECF_NOTHROW,
+                      reduc_xor_scal, unary)
 
 /* Unary math functions.  */
 DEF_INTERNAL_FLT_FN (ACOS, ECF_CONST, acos, unary)
Index: gcc/fold-const-call.c
===================================================================
--- gcc/fold-const-call.c       2017-11-22 17:53:21.698058809 +0000
+++ gcc/fold-const-call.c       2017-11-22 18:06:54.516061226 +0000
@@ -1176,6 +1176,15 @@ fold_const_call (combined_fn fn, tree ty
     case CFN_REDUC_MIN:
       return fold_const_reduction (type, arg, MIN_EXPR);
 
+    case CFN_REDUC_AND:
+      return fold_const_reduction (type, arg, BIT_AND_EXPR);
+
+    case CFN_REDUC_IOR:
+      return fold_const_reduction (type, arg, BIT_IOR_EXPR);
+
+    case CFN_REDUC_XOR:
+      return fold_const_reduction (type, arg, BIT_XOR_EXPR);
+
     default:
       return fold_const_call_1 (fn, type, arg);
     }
Index: gcc/tree-vect-loop.c
===================================================================
--- gcc/tree-vect-loop.c        2017-11-22 18:05:58.629089823 +0000
+++ gcc/tree-vect-loop.c        2017-11-22 18:06:54.517964518 +0000
@@ -2436,11 +2436,20 @@ reduction_fn_for_scalar_code (enum tree_
         *reduc_fn = IFN_REDUC_PLUS;
         return true;
 
-      case MULT_EXPR:
-      case MINUS_EXPR:
+      case BIT_AND_EXPR:
+       *reduc_fn = IFN_REDUC_AND;
+       return true;
+
       case BIT_IOR_EXPR:
+       *reduc_fn = IFN_REDUC_IOR;
+       return true;
+
       case BIT_XOR_EXPR:
-      case BIT_AND_EXPR:
+       *reduc_fn = IFN_REDUC_XOR;
+       return true;
+
+      case MULT_EXPR:
+      case MINUS_EXPR:
         *reduc_fn = IFN_LAST;
         return true;
 
Index: gcc/config/aarch64/aarch64-sve.md
===================================================================
--- gcc/config/aarch64/aarch64-sve.md   2017-11-22 18:05:58.618616756 +0000
+++ gcc/config/aarch64/aarch64-sve.md   2017-11-22 18:06:54.514157934 +0000
@@ -1513,6 +1513,26 @@ (define_insn "*reduc_<maxmin_uns>_scal_<
   "<maxmin_uns_op>v\t%<Vetype>0, %1, %2.<Vetype>"
 )
 
+(define_expand "reduc_<optab>_scal_<mode>"
+  [(set (match_operand:<VEL> 0 "register_operand")
+       (unspec:<VEL> [(match_dup 2)
+                      (match_operand:SVE_I 1 "register_operand")]
+                     BITWISEV))]
+  "TARGET_SVE"
+  {
+    operands[2] = force_reg (<VPRED>mode, CONSTM1_RTX (<VPRED>mode));
+  }
+)
+
+(define_insn "*reduc_<optab>_scal_<mode>"
+  [(set (match_operand:<VEL> 0 "register_operand" "=w")
+       (unspec:<VEL> [(match_operand:<VPRED> 1 "register_operand" "Upl")
+                      (match_operand:SVE_I 2 "register_operand" "w")]
+                     BITWISEV))]
+  "TARGET_SVE"
+  "<bit_reduc_op>\t%<Vetype>0, %1, %2.<Vetype>"
+)
+
 ;; Unpredicated floating-point addition.
 (define_expand "add<mode>3"
   [(set (match_operand:SVE_F 0 "register_operand")
Index: gcc/config/aarch64/iterators.md
===================================================================
--- gcc/config/aarch64/iterators.md     2017-11-22 18:05:58.618616756 +0000
+++ gcc/config/aarch64/iterators.md     2017-11-22 18:06:54.514157934 +0000
@@ -409,6 +409,9 @@ (define_c_enum "unspec"
     UNSPEC_SDOT                ; Used in aarch64-simd.md.
     UNSPEC_UDOT                ; Used in aarch64-simd.md.
     UNSPEC_SEL         ; Used in aarch64-sve.md.
+    UNSPEC_ANDV                ; Used in aarch64-sve.md.
+    UNSPEC_IORV                ; Used in aarch64-sve.md.
+    UNSPEC_XORV                ; Used in aarch64-sve.md.
     UNSPEC_ANDF                ; Used in aarch64-sve.md.
     UNSPEC_IORF                ; Used in aarch64-sve.md.
     UNSPEC_XORF                ; Used in aarch64-sve.md.
@@ -1318,6 +1321,8 @@ (define_int_iterator MAXMINV [UNSPEC_UMA
 (define_int_iterator FMAXMINV [UNSPEC_FMAXV UNSPEC_FMINV
                               UNSPEC_FMAXNMV UNSPEC_FMINNMV])
 
+(define_int_iterator BITWISEV [UNSPEC_ANDV UNSPEC_IORV UNSPEC_XORV])
+
 (define_int_iterator LOGICALF [UNSPEC_ANDF UNSPEC_IORF UNSPEC_XORF])
 
 (define_int_iterator HADDSUB [UNSPEC_SHADD UNSPEC_UHADD
@@ -1437,7 +1442,10 @@ (define_int_attr atomic_ldop
 ;; name for consistency with the integer patterns.
 (define_int_attr optab [(UNSPEC_ANDF "and")
                        (UNSPEC_IORF "ior")
-                       (UNSPEC_XORF "xor")])
+                       (UNSPEC_XORF "xor")
+                       (UNSPEC_ANDV "and")
+                       (UNSPEC_IORV "ior")
+                       (UNSPEC_XORV "xor")])
 
 (define_int_attr  maxmin_uns [(UNSPEC_UMAXV "umax")
                              (UNSPEC_UMINV "umin")
@@ -1465,6 +1473,10 @@ (define_int_attr  maxmin_uns_op [(UNSPEC
                                 (UNSPEC_FMAXNM "fmaxnm")
                                 (UNSPEC_FMINNM "fminnm")])
 
+(define_int_attr bit_reduc_op [(UNSPEC_ANDV "andv")
+                              (UNSPEC_IORV "orv")
+                              (UNSPEC_XORV "eorv")])
+
 ;; The SVE logical instruction that implements an unspec.
 (define_int_attr logicalf_op [(UNSPEC_ANDF "and")
                              (UNSPEC_IORF "orr")
Index: gcc/testsuite/lib/target-supports.exp
===================================================================
--- gcc/testsuite/lib/target-supports.exp       2017-11-22 18:05:58.626233532 
+0000
+++ gcc/testsuite/lib/target-supports.exp       2017-11-22 18:06:54.517012872 
+0000
@@ -7187,6 +7187,12 @@ proc check_effective_target_vect_call_ro
     return $et_vect_call_roundf_saved($et_index)
 }
 
+# Return 1 if the target supports AND, OR and XOR reduction.
+
+proc check_effective_target_vect_logical_reduc { } {
+    return [check_effective_target_aarch64_sve]
+}
+
 # Return 1 if the target supports section-anchors
 
 proc check_effective_target_section_anchors { } {
Index: gcc/testsuite/gcc.dg/vect/vect-reduc-or_1.c
===================================================================
--- gcc/testsuite/gcc.dg/vect/vect-reduc-or_1.c 2017-11-22 18:05:58.624329338 
+0000
+++ gcc/testsuite/gcc.dg/vect/vect-reduc-or_1.c 2017-11-22 18:06:54.516061226 
+0000
@@ -1,4 +1,4 @@
-/* { dg-require-effective-target whole_vector_shift } */
+/* { dg-do run { target { whole_vector_shift || vect_logical_reduc } } } */
 
 /* Write a reduction loop to be reduced using vector shifts.  */
 
@@ -24,17 +24,17 @@ main (unsigned char argc, char **argv)
   check_vect ();
 
   for (i = 0; i < N; i++)
-    in[i] = (i + i + 1) & 0xfd;
+    {
+      in[i] = (i + i + 1) & 0xfd;
+      asm volatile ("" ::: "memory");
+    }
 
   for (i = 0; i < N; i++)
     {
       expected |= in[i];
-      asm volatile ("");
+      asm volatile ("" ::: "memory");
     }
 
-  /* Prevent constant propagation of the entire loop below.  */
-  asm volatile ("" : : : "memory");
-
   for (i = 0; i < N; i++)
     sum |= in[i];
 
@@ -47,5 +47,5 @@ main (unsigned char argc, char **argv)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump "Reduce using vector shifts" "vect" } } */
-
+/* { dg-final { scan-tree-dump "Reduce using vector shifts" "vect" { target { 
! vect_logical_reduc } } } } */
+/* { dg-final { scan-tree-dump "Reduce using direct vector reduction" "vect" { 
target vect_logical_reduc } } } */
Index: gcc/testsuite/gcc.dg/vect/vect-reduc-or_2.c
===================================================================
--- gcc/testsuite/gcc.dg/vect/vect-reduc-or_2.c 2017-11-22 18:05:58.625281435 
+0000
+++ gcc/testsuite/gcc.dg/vect/vect-reduc-or_2.c 2017-11-22 18:06:54.516061226 
+0000
@@ -1,4 +1,4 @@
-/* { dg-require-effective-target whole_vector_shift } */
+/* { dg-do run { target { whole_vector_shift || vect_logical_reduc } } } */
 
 /* Write a reduction loop to be reduced using vector shifts and folded.  */
 
@@ -23,12 +23,15 @@ main (unsigned char argc, char **argv)
   check_vect ();
 
   for (i = 0; i < N; i++)
-    in[i] = (i + i + 1) & 0xfd;
+    {
+      in[i] = (i + i + 1) & 0xfd;
+      asm volatile ("" ::: "memory");
+    }
 
   for (i = 0; i < N; i++)
     {
       expected |= in[i];
-      asm volatile ("");
+      asm volatile ("" ::: "memory");
     }
 
   for (i = 0; i < N; i++)
@@ -43,5 +46,5 @@ main (unsigned char argc, char **argv)
   return 0;
 }
 
-/* { dg-final { scan-tree-dump "Reduce using vector shifts" "vect" } } */
-
+/* { dg-final { scan-tree-dump "Reduce using vector shifts" "vect" { target { 
! vect_logical_reduc } } } } */
+/* { dg-final { scan-tree-dump "Reduce using direct vector reduction" "vect" { 
target vect_logical_reduc } } } */
Index: gcc/testsuite/gcc.target/aarch64/sve_reduc_1.c
===================================================================
--- gcc/testsuite/gcc.target/aarch64/sve_reduc_1.c      2017-11-22 
18:05:58.625281435 +0000
+++ gcc/testsuite/gcc.target/aarch64/sve_reduc_1.c      2017-11-22 
18:06:54.516061226 +0000
@@ -65,6 +65,46 @@ #define TEST_MAXMIN(T)                               \
 
 TEST_MAXMIN (DEF_REDUC_MAXMIN)
 
+#define DEF_REDUC_BITWISE(TYPE, NAME, BIT_OP)  \
+TYPE __attribute__ ((noinline, noclone))       \
+reduc_##NAME##_##TYPE (TYPE *a, int n)         \
+{                                              \
+  TYPE r = 13;                                 \
+  for (int i = 0; i < n; ++i)                  \
+    r BIT_OP a[i];                             \
+  return r;                                    \
+}
+
+#define TEST_BITWISE(T)                                \
+  T (int8_t, and, &=)                          \
+  T (int16_t, and, &=)                         \
+  T (int32_t, and, &=)                         \
+  T (int64_t, and, &=)                         \
+  T (uint8_t, and, &=)                         \
+  T (uint16_t, and, &=)                                \
+  T (uint32_t, and, &=)                                \
+  T (uint64_t, and, &=)                                \
+                                               \
+  T (int8_t, ior, |=)                          \
+  T (int16_t, ior, |=)                         \
+  T (int32_t, ior, |=)                         \
+  T (int64_t, ior, |=)                         \
+  T (uint8_t, ior, |=)                         \
+  T (uint16_t, ior, |=)                                \
+  T (uint32_t, ior, |=)                                \
+  T (uint64_t, ior, |=)                                \
+                                               \
+  T (int8_t, xor, ^=)                          \
+  T (int16_t, xor, ^=)                         \
+  T (int32_t, xor, ^=)                         \
+  T (int64_t, xor, ^=)                         \
+  T (uint8_t, xor, ^=)                         \
+  T (uint16_t, xor, ^=)                                \
+  T (uint32_t, xor, ^=)                                \
+  T (uint64_t, xor, ^=)
+
+TEST_BITWISE (DEF_REDUC_BITWISE)
+
 /* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.b, z[0-9]+\.b, 
z[0-9]+\.b\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.h, z[0-9]+\.h, 
z[0-9]+\.h\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tadd\tz[0-9]+\.s, z[0-9]+\.s, 
z[0-9]+\.s\n} 2 } } */
@@ -102,6 +142,12 @@ TEST_MAXMIN (DEF_REDUC_MAXMIN)
 /* { dg-final { scan-assembler-times {\tfminnm\tz[0-9]+\.s, p[0-7]/m, 
z[0-9]+\.s, z[0-9]+\.s\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tfminnm\tz[0-9]+\.d, p[0-7]/m, 
z[0-9]+\.d, z[0-9]+\.d\n} 1 } } */
 
+/* { dg-final { scan-assembler-times {\tand\tz[0-9]+\.d, z[0-9]+\.d, 
z[0-9]+\.d\n} 8 } } */
+
+/* { dg-final { scan-assembler-times {\torr\tz[0-9]+\.d, z[0-9]+\.d, 
z[0-9]+\.d\n} 8 } } */
+
+/* { dg-final { scan-assembler-times {\teor\tz[0-9]+\.d, z[0-9]+\.d, 
z[0-9]+\.d\n} 8 } } */
+
 /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.b\n} 
1 } } */
 /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.h\n} 
1 } } */
 /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.s\n} 
2 } } */
@@ -133,3 +179,18 @@ TEST_MAXMIN (DEF_REDUC_MAXMIN)
 /* { dg-final { scan-assembler-times {\tfminnmv\th[0-9]+, p[0-7], 
z[0-9]+\.h\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tfminnmv\ts[0-9]+, p[0-7], 
z[0-9]+\.s\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tfminnmv\td[0-9]+, p[0-7], 
z[0-9]+\.d\n} 1 } } */
+
+/* { dg-final { scan-assembler-times {\tandv\tb[0-9]+, p[0-7], z[0-9]+\.b} 2 } 
} */
+/* { dg-final { scan-assembler-times {\tandv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } 
} */
+/* { dg-final { scan-assembler-times {\tandv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } 
} */
+/* { dg-final { scan-assembler-times {\tandv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } 
} */
+
+/* { dg-final { scan-assembler-times {\torv\tb[0-9]+, p[0-7], z[0-9]+\.b} 2 } 
} */
+/* { dg-final { scan-assembler-times {\torv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } 
} */
+/* { dg-final { scan-assembler-times {\torv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } 
} */
+/* { dg-final { scan-assembler-times {\torv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } 
} */
+
+/* { dg-final { scan-assembler-times {\teorv\tb[0-9]+, p[0-7], z[0-9]+\.b} 2 } 
} */
+/* { dg-final { scan-assembler-times {\teorv\th[0-9]+, p[0-7], z[0-9]+\.h} 2 } 
} */
+/* { dg-final { scan-assembler-times {\teorv\ts[0-9]+, p[0-7], z[0-9]+\.s} 2 } 
} */
+/* { dg-final { scan-assembler-times {\teorv\td[0-9]+, p[0-7], z[0-9]+\.d} 2 } 
} */
Index: gcc/testsuite/gcc.target/aarch64/sve_reduc_2.c
===================================================================
--- gcc/testsuite/gcc.target/aarch64/sve_reduc_2.c      2017-11-22 
18:05:58.625281435 +0000
+++ gcc/testsuite/gcc.target/aarch64/sve_reduc_2.c      2017-11-22 
18:06:54.517012872 +0000
@@ -73,6 +73,49 @@ #define TEST_MAXMIN(T)                               \
 
 TEST_MAXMIN (DEF_REDUC_MAXMIN)
 
+#define DEF_REDUC_BITWISE(TYPE,NAME,BIT_OP)                    \
+void __attribute__ ((noinline, noclone))                       \
+reduc_##NAME##TYPE (TYPE (*restrict a)[NUM_ELEMS(TYPE)],       \
+                   TYPE *restrict r, int n)                    \
+{                                                              \
+  for (int i = 0; i < n; i++)                                  \
+    {                                                          \
+      r[i] = a[i][0];                                          \
+      for (int j = 0; j < NUM_ELEMS(TYPE); j++)                        \
+        r[i] BIT_OP a[i][j];                                   \
+    }                                                          \
+}
+
+#define TEST_BITWISE(T)                                \
+  T (int8_t, and, &=)                          \
+  T (int16_t, and, &=)                         \
+  T (int32_t, and, &=)                         \
+  T (int64_t, and, &=)                         \
+  T (uint8_t, and, &=)                         \
+  T (uint16_t, and, &=)                                \
+  T (uint32_t, and, &=)                                \
+  T (uint64_t, and, &=)                                \
+                                               \
+  T (int8_t, ior, |=)                          \
+  T (int16_t, ior, |=)                         \
+  T (int32_t, ior, |=)                         \
+  T (int64_t, ior, |=)                         \
+  T (uint8_t, ior, |=)                         \
+  T (uint16_t, ior, |=)                                \
+  T (uint32_t, ior, |=)                                \
+  T (uint64_t, ior, |=)                                \
+                                               \
+  T (int8_t, xor, ^=)                          \
+  T (int16_t, xor, ^=)                         \
+  T (int32_t, xor, ^=)                         \
+  T (int64_t, xor, ^=)                         \
+  T (uint8_t, xor, ^=)                         \
+  T (uint16_t, xor, ^=)                                \
+  T (uint32_t, xor, ^=)                                \
+  T (uint64_t, xor, ^=)
+
+TEST_BITWISE (DEF_REDUC_BITWISE)
+
 /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.b\n} 
1 } } */
 /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.h\n} 
1 } } */
 /* { dg-final { scan-assembler-times {\tuaddv\td[0-9]+, p[0-7], z[0-9]+\.s\n} 
2 } } */
@@ -104,3 +147,18 @@ TEST_MAXMIN (DEF_REDUC_MAXMIN)
 /* { dg-final { scan-assembler-times {\tfminnmv\th[0-9]+, p[0-7], 
z[0-9]+\.h\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tfminnmv\ts[0-9]+, p[0-7], 
z[0-9]+\.s\n} 1 } } */
 /* { dg-final { scan-assembler-times {\tfminnmv\td[0-9]+, p[0-7], 
z[0-9]+\.d\n} 1 } } */
+
+/* { dg-final { scan-assembler-times {\tandv\tb[0-9]+, p[0-7], z[0-9]+\.b\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\tandv\th[0-9]+, p[0-7], z[0-9]+\.h\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\tandv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\tandv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 
} } */
+
+/* { dg-final { scan-assembler-times {\torv\tb[0-9]+, p[0-7], z[0-9]+\.b\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\torv\th[0-9]+, p[0-7], z[0-9]+\.h\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\torv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\torv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 
} } */
+
+/* { dg-final { scan-assembler-times {\teorv\tb[0-9]+, p[0-7], z[0-9]+\.b\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\teorv\th[0-9]+, p[0-7], z[0-9]+\.h\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\teorv\ts[0-9]+, p[0-7], z[0-9]+\.s\n} 2 
} } */
+/* { dg-final { scan-assembler-times {\teorv\td[0-9]+, p[0-7], z[0-9]+\.d\n} 2 
} } */
Index: gcc/testsuite/gcc.target/aarch64/sve_reduc_1_run.c
===================================================================
--- gcc/testsuite/gcc.target/aarch64/sve_reduc_1_run.c  2017-11-22 
18:05:58.625281435 +0000
+++ gcc/testsuite/gcc.target/aarch64/sve_reduc_1_run.c  2017-11-22 
18:06:54.516061226 +0000
@@ -9,7 +9,7 @@ #define INIT_VECTOR(TYPE)                               \
   TYPE a[NUM_ELEMS (TYPE) + 1];                                \
   for (int i = 0; i < NUM_ELEMS (TYPE) + 1; i++)       \
     {                                                  \
-      a[i] = (i * 2) * (i & 1 ? 1 : -1);               \
+      a[i] = ((i * 2) * (i & 1 ? 1 : -1) | 3);         \
       asm volatile ("" ::: "memory");                  \
     }
 
@@ -35,10 +35,22 @@ #define TEST_REDUC_MAXMIN(TYPE, NAME, CM
       __builtin_abort ();                                      \
   }
 
+#define TEST_REDUC_BITWISE(TYPE, NAME, BIT_OP)                 \
+  {                                                            \
+    INIT_VECTOR (TYPE);                                                \
+    TYPE r1 = reduc_##NAME##_##TYPE (a, NUM_ELEMS (TYPE));     \
+    volatile TYPE r2 = 13;                                     \
+    for (int i = 0; i < NUM_ELEMS (TYPE); ++i)                 \
+      r2 BIT_OP a[i];                                          \
+    if (r1 != r2)                                              \
+      __builtin_abort ();                                      \
+  }
+
 int main ()
 {
   TEST_PLUS (TEST_REDUC_PLUS)
   TEST_MAXMIN (TEST_REDUC_MAXMIN)
+  TEST_BITWISE (TEST_REDUC_BITWISE)
 
   return 0;
 }
Index: gcc/testsuite/gcc.target/aarch64/sve_reduc_2_run.c
===================================================================
--- gcc/testsuite/gcc.target/aarch64/sve_reduc_2_run.c  2017-11-22 
18:05:58.625281435 +0000
+++ gcc/testsuite/gcc.target/aarch64/sve_reduc_2_run.c  2017-11-22 
18:06:54.517012872 +0000
@@ -56,6 +56,20 @@ #define TEST_REDUC_MAXMIN(TYPE, NAME, CM
       }                                                        \
     }
 
+#define TEST_REDUC_BITWISE(TYPE, NAME, BIT_OP)         \
+  {                                                    \
+    INIT_MATRIX (TYPE);                                        \
+    reduc_##NAME##_##TYPE (mat, r, NROWS);             \
+    for (int i = 0; i < NROWS; i++)                    \
+      {                                                        \
+       volatile TYPE r2 = mat[i][0];                   \
+       for (int j = 0; j < NUM_ELEMS (TYPE); ++j)      \
+         r2 BIT_OP mat[i][j];                          \
+       if (r[i] != r2)                                 \
+         __builtin_abort ();                           \
+      }                                                        \
+    }
+
 int main ()
 {
   TEST_PLUS (TEST_REDUC_PLUS)

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