Add VEC_WIDEN_MULT_EVEN/ODD_EXPR

        * tree.def (VEC_WIDEN_MULT_EVEN_EXPR, VEC_WIDEN_MULT_ODD_EXPR): New.
        * cfgexpand.c (expand_debug_expr): Handle them.
        * expr.c (expand_expr_real_2): Likewise.
        * fold-const.c (fold_binary_loc): Likewise.
        * gimple-pretty-print.c (dump_binary_rhs): Likewise.
        * optabs.c (optab_for_tree_code): Likewise.
        * tree-cfg.c (verify_gimple_assign_binary): Likewise.
        * tree-inline.c (estimate_operator_cost): Likewise.
        * tree-pretty-print.c (dump_generic_node): Likewise.
        * tree.c (commutative_tree_code): Likewise.
        * tree-vect-generic.c (expand_vector_operations_1): Likewise.
        Handle type change before looking up optab.
        * optabs.h (OTI_vec_widen_umult_even, OTI_vec_widen_umult_odd): New.
        (OTI_vec_widen_smult_even, OTI_vec_widen_smult_odd): New.
        (vec_widen_umult_even_optab, vec_widen_umult_odd_optab): New.
        (vec_widen_smult_even_optab, vec_widen_smult_odd_optab): New.
        * genopinit.c (optabs): Initialize them.
        * doc/md.texi: Document them.

From-SVN: r189403

15 files changed, 124 insertions, 77 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 533e844..a65b78e 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,24 @@
+2012-07-10  Richard Henderson  <rth@redhat.com>
+
+	* tree.def (VEC_WIDEN_MULT_EVEN_EXPR, VEC_WIDEN_MULT_ODD_EXPR): New.
+	* cfgexpand.c (expand_debug_expr): Handle them.
+	* expr.c (expand_expr_real_2): Likewise.
+	* fold-const.c (fold_binary_loc): Likewise.
+	* gimple-pretty-print.c (dump_binary_rhs): Likewise.
+	* optabs.c (optab_for_tree_code): Likewise.
+	* tree-cfg.c (verify_gimple_assign_binary): Likewise.
+	* tree-inline.c (estimate_operator_cost): Likewise.
+	* tree-pretty-print.c (dump_generic_node): Likewise.
+	* tree.c (commutative_tree_code): Likewise.
+	* tree-vect-generic.c (expand_vector_operations_1): Likewise.
+	Handle type change before looking up optab.
+	* optabs.h (OTI_vec_widen_umult_even, OTI_vec_widen_umult_odd): New.
+	(OTI_vec_widen_smult_even, OTI_vec_widen_smult_odd): New.
+	(vec_widen_umult_even_optab, vec_widen_umult_odd_optab): New.
+	(vec_widen_smult_even_optab, vec_widen_smult_odd_optab): New.
+	* genopinit.c (optabs): Initialize them.
+	* doc/md.texi: Document them.
+
 2012-07-10  Dehao Chen  <dehao@google.com>
 
 	* tree.h (phi_arg_d): New field.
diff --git a/gcc/cfgexpand.c b/gcc/cfgexpand.c
index ad2f667..c8d09c7 100644
--- a/gcc/cfgexpand.c
+++ b/gcc/cfgexpand.c
@@ -1,5 +1,5 @@
 /* A pass for lowering trees to RTL.
-   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+   Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -3410,6 +3410,8 @@ expand_debug_expr (tree exp)
     case VEC_UNPACK_LO_EXPR:
     case VEC_WIDEN_MULT_HI_EXPR:
     case VEC_WIDEN_MULT_LO_EXPR:
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
     case VEC_WIDEN_LSHIFT_HI_EXPR:
     case VEC_WIDEN_LSHIFT_LO_EXPR:
     case VEC_PERM_EXPR:
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index c71c59c..99f6528 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -4561,15 +4561,21 @@ floating point conversion and place the resulting N/2 values of size 2*S in
 the output vector (operand 0).
 
 @cindex @code{vec_widen_umult_hi_@var{m}} instruction pattern
-@cindex @code{vec_widen_umult_lo__@var{m}} instruction pattern
+@cindex @code{vec_widen_umult_lo_@var{m}} instruction pattern
 @cindex @code{vec_widen_smult_hi_@var{m}} instruction pattern
 @cindex @code{vec_widen_smult_lo_@var{m}} instruction pattern
+@cindex @code{vec_widen_umult_even_@var{m}} instruction pattern
+@cindex @code{vec_widen_umult_odd_@var{m}} instruction pattern
+@cindex @code{vec_widen_smult_even_@var{m}} instruction pattern
+@cindex @code{vec_widen_smult_odd_@var{m}} instruction pattern
 @item @samp{vec_widen_umult_hi_@var{m}}, @samp{vec_widen_umult_lo_@var{m}}
 @itemx @samp{vec_widen_smult_hi_@var{m}}, @samp{vec_widen_smult_lo_@var{m}}
+@itemx @samp{vec_widen_umult_even_@var{m}}, @samp{vec_widen_umult_odd_@var{m}}
+@itemx @samp{vec_widen_smult_even_@var{m}}, @samp{vec_widen_smult_odd_@var{m}}
 Signed/Unsigned widening multiplication.  The two inputs (operands 1 and 2)
 are vectors with N signed/unsigned elements of size S@.  Multiply the high/low
-elements of the two vectors, and put the N/2 products of size 2*S in the
-output vector (operand 0).
+or even/odd elements of the two vectors, and put the N/2 products of size 2*S
+in the output vector (operand 0).
 
 @cindex @code{vec_widen_ushiftl_hi_@var{m}} instruction pattern
 @cindex @code{vec_widen_ushiftl_lo_@var{m}} instruction pattern
diff --git a/gcc/expr.c b/gcc/expr.c
index 1279186..c56b0e5 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -8917,29 +8917,15 @@ expand_expr_real_2 (sepops ops, rtx target, enum machine_mode tmode,
 
     case VEC_WIDEN_MULT_HI_EXPR:
     case VEC_WIDEN_MULT_LO_EXPR:
-      {
-	tree oprnd0 = treeop0;
-	tree oprnd1 = treeop1;
-
-	expand_operands (oprnd0, oprnd1, NULL_RTX, &op0, &op1, EXPAND_NORMAL);
-	target = expand_widen_pattern_expr (ops, op0, op1, NULL_RTX,
-					    target, unsignedp);
-	gcc_assert (target);
-	return target;
-      }
-
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
     case VEC_WIDEN_LSHIFT_HI_EXPR:
     case VEC_WIDEN_LSHIFT_LO_EXPR:
-      {
-        tree oprnd0 = treeop0;
-        tree oprnd1 = treeop1;
-
-        expand_operands (oprnd0, oprnd1, NULL_RTX, &op0, &op1, EXPAND_NORMAL);
-        target = expand_widen_pattern_expr (ops, op0, op1, NULL_RTX,
-                                            target, unsignedp);
-        gcc_assert (target);
-        return target;
-      }
+      expand_operands (treeop0, treeop1, NULL_RTX, &op0, &op1, EXPAND_NORMAL);
+      target = expand_widen_pattern_expr (ops, op0, op1, NULL_RTX,
+					  target, unsignedp);
+      gcc_assert (target);
+      return target;
 
     case VEC_PACK_TRUNC_EXPR:
     case VEC_PACK_SAT_EXPR:
diff --git a/gcc/fold-const.c b/gcc/fold-const.c
index 702f4e0..a491499 100644
--- a/gcc/fold-const.c
+++ b/gcc/fold-const.c
@@ -13657,8 +13657,11 @@ fold_binary_loc (location_t loc,
 
     case VEC_WIDEN_MULT_LO_EXPR:
     case VEC_WIDEN_MULT_HI_EXPR:
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
       {
-	unsigned int nelts = TYPE_VECTOR_SUBPARTS (type), i;
+	unsigned int nelts = TYPE_VECTOR_SUBPARTS (type);
+	unsigned int out, ofs, scale;
 	tree *elts;
 
 	gcc_assert (TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg0)) == nelts * 2
@@ -13671,19 +13674,28 @@ fold_binary_loc (location_t loc,
 	    || !vec_cst_ctor_to_array (arg1, elts + nelts * 2))
 	  return NULL_TREE;
 
-	if ((!BYTES_BIG_ENDIAN) ^ (code == VEC_WIDEN_MULT_LO_EXPR))
-	  elts += nelts;
-
-	for (i = 0; i < nelts; i++)
+	if (code == VEC_WIDEN_MULT_LO_EXPR)
+	  scale = 0, ofs = BYTES_BIG_ENDIAN ? nelts : 0;
+	else if (code == VEC_WIDEN_MULT_HI_EXPR)
+	  scale = 0, ofs = BYTES_BIG_ENDIAN ? 0 : nelts;
+	else if (code == VEC_WIDEN_MULT_EVEN_EXPR)
+	  scale = 1, ofs = 0;
+	else /* if (code == VEC_WIDEN_MULT_ODD_EXPR) */
+	  scale = 1, ofs = 1;
+	
+	for (out = 0; out < nelts; out++)
 	  {
-	    elts[i] = fold_convert_const (NOP_EXPR, TREE_TYPE (type), elts[i]);
-	    elts[i + nelts * 2]
-	      = fold_convert_const (NOP_EXPR, TREE_TYPE (type),
-				    elts[i + nelts * 2]);
-	    if (elts[i] == NULL_TREE || elts[i + nelts * 2] == NULL_TREE)
+	    unsigned int in1 = (out << scale) + ofs;
+	    unsigned int in2 = in1 + nelts * 2;
+	    tree t1, t2;
+
+	    t1 = fold_convert_const (NOP_EXPR, TREE_TYPE (type), elts[in1]);
+	    t2 = fold_convert_const (NOP_EXPR, TREE_TYPE (type), elts[in2]);
+
+	    if (t1 == NULL_TREE || t2 == NULL_TREE)
 	      return NULL_TREE;
-	    elts[i] = const_binop (MULT_EXPR, elts[i], elts[i + nelts * 2]);
-	    if (elts[i] == NULL_TREE || !CONSTANT_CLASS_P (elts[i]))
+	    elts[out] = const_binop (MULT_EXPR, t1, t2);
+	    if (elts[out] == NULL_TREE || !CONSTANT_CLASS_P (elts[out]))
 	      return NULL_TREE;
 	  }
 
diff --git a/gcc/genopinit.c b/gcc/genopinit.c
index baccd45..2d6757e 100644
--- a/gcc/genopinit.c
+++ b/gcc/genopinit.c
@@ -289,6 +289,10 @@ static const char * const optabs[] =
   "set_optab_handler (vec_widen_umult_lo_optab, $A, CODE_FOR_$(vec_widen_umult_lo_$a$))",
   "set_optab_handler (vec_widen_smult_hi_optab, $A, CODE_FOR_$(vec_widen_smult_hi_$a$))",
   "set_optab_handler (vec_widen_smult_lo_optab, $A, CODE_FOR_$(vec_widen_smult_lo_$a$))",
+  "set_optab_handler (vec_widen_umult_even_optab, $A, CODE_FOR_$(vec_widen_umult_even_$a$))",
+  "set_optab_handler (vec_widen_umult_odd_optab, $A, CODE_FOR_$(vec_widen_umult_odd_$a$))",
+  "set_optab_handler (vec_widen_smult_even_optab, $A, CODE_FOR_$(vec_widen_smult_even_$a$))",
+  "set_optab_handler (vec_widen_smult_odd_optab, $A, CODE_FOR_$(vec_widen_smult_odd_$a$))",
   "set_optab_handler (vec_widen_ushiftl_hi_optab, $A, CODE_FOR_$(vec_widen_ushiftl_hi_$a$))",
   "set_optab_handler (vec_widen_ushiftl_lo_optab, $A, CODE_FOR_$(vec_widen_ushiftl_lo_$a$))",
   "set_optab_handler (vec_widen_sshiftl_hi_optab, $A, CODE_FOR_$(vec_widen_sshiftl_hi_$a$))",
diff --git a/gcc/gimple-pretty-print.c b/gcc/gimple-pretty-print.c
index a80ae90..648597a 100644
--- a/gcc/gimple-pretty-print.c
+++ b/gcc/gimple-pretty-print.c
@@ -342,6 +342,8 @@ dump_binary_rhs (pretty_printer *buffer, gimple gs, int spc, int flags)
     case MAX_EXPR:
     case VEC_WIDEN_MULT_HI_EXPR:
     case VEC_WIDEN_MULT_LO_EXPR:
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
     case VEC_PACK_TRUNC_EXPR:
     case VEC_PACK_SAT_EXPR:
     case VEC_PACK_FIX_TRUNC_EXPR:
diff --git a/gcc/optabs.c b/gcc/optabs.c
index 3094476..fbea879 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -483,6 +483,14 @@ optab_for_tree_code (enum tree_code code, const_tree type,
       return TYPE_UNSIGNED (type) ?
 	vec_widen_umult_lo_optab : vec_widen_smult_lo_optab;
 
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+      return TYPE_UNSIGNED (type) ?
+	vec_widen_umult_even_optab : vec_widen_smult_even_optab;
+
+    case VEC_WIDEN_MULT_ODD_EXPR:
+      return TYPE_UNSIGNED (type) ?
+	vec_widen_umult_odd_optab : vec_widen_smult_odd_optab;
+
     case VEC_WIDEN_LSHIFT_HI_EXPR:
       return TYPE_UNSIGNED (type) ?
         vec_widen_ushiftl_hi_optab : vec_widen_sshiftl_hi_optab;
diff --git a/gcc/optabs.h b/gcc/optabs.h
index d87aff8..37a6bfd 100644
--- a/gcc/optabs.h
+++ b/gcc/optabs.h
@@ -340,12 +340,16 @@ enum optab_index
   OTI_vec_shr,
   /* Extract specified elements from vectors, for vector load.  */
   OTI_vec_realign_load,
-  /* Widening multiplication.
-     The high/low part of the resulting vector of products is returned.  */
+  /* Widening multiplication.  The high/low/even/odd part of the
+     resulting vector of products is returned.  */
   OTI_vec_widen_umult_hi,
   OTI_vec_widen_umult_lo,
   OTI_vec_widen_smult_hi,
   OTI_vec_widen_smult_lo,
+  OTI_vec_widen_umult_even,
+  OTI_vec_widen_umult_odd,
+  OTI_vec_widen_smult_even,
+  OTI_vec_widen_smult_odd,
   /* Widening shift left.
      The high/low part of the resulting vector is returned.  */
   OTI_vec_widen_ushiftl_hi,
@@ -565,6 +569,10 @@ enum optab_index
 #define vec_widen_umult_lo_optab (&optab_table[OTI_vec_widen_umult_lo])
 #define vec_widen_smult_hi_optab (&optab_table[OTI_vec_widen_smult_hi])
 #define vec_widen_smult_lo_optab (&optab_table[OTI_vec_widen_smult_lo])
+#define vec_widen_umult_even_optab (&optab_table[OTI_vec_widen_umult_even])
+#define vec_widen_umult_odd_optab (&optab_table[OTI_vec_widen_umult_odd])
+#define vec_widen_smult_even_optab (&optab_table[OTI_vec_widen_smult_even])
+#define vec_widen_smult_odd_optab (&optab_table[OTI_vec_widen_smult_odd])
 #define vec_widen_ushiftl_hi_optab (&optab_table[OTI_vec_widen_ushiftl_hi])
 #define vec_widen_ushiftl_lo_optab (&optab_table[OTI_vec_widen_ushiftl_lo])
 #define vec_widen_sshiftl_hi_optab (&optab_table[OTI_vec_widen_sshiftl_hi])
diff --git a/gcc/tree-cfg.c b/gcc/tree-cfg.c
index e03313e..d8a396f 100644
--- a/gcc/tree-cfg.c
+++ b/gcc/tree-cfg.c
@@ -3724,6 +3724,8 @@ do_pointer_plus_expr_check:
     case WIDEN_SUM_EXPR:
     case VEC_WIDEN_MULT_HI_EXPR:
     case VEC_WIDEN_MULT_LO_EXPR:
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
     case VEC_PACK_TRUNC_EXPR:
     case VEC_PACK_SAT_EXPR:
     case VEC_PACK_FIX_TRUNC_EXPR:
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
index 7d444e1..f576ee5 100644
--- a/gcc/tree-inline.c
+++ b/gcc/tree-inline.c
@@ -3456,6 +3456,8 @@ estimate_operator_cost (enum tree_code code, eni_weights *weights,
 
     case VEC_WIDEN_MULT_HI_EXPR:
     case VEC_WIDEN_MULT_LO_EXPR:
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
     case VEC_UNPACK_HI_EXPR:
     case VEC_UNPACK_LO_EXPR:
     case VEC_UNPACK_FLOAT_HI_EXPR:
diff --git a/gcc/tree-pretty-print.c b/gcc/tree-pretty-print.c
index f418d39..cdf3f28 100644
--- a/gcc/tree-pretty-print.c
+++ b/gcc/tree-pretty-print.c
@@ -602,6 +602,7 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
   tree op0, op1;
   const char *str;
   bool is_expr;
+  enum tree_code code;
 
   if (node == NULL_TREE)
     return spc;
@@ -614,7 +615,8 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
   if ((flags & TDF_LINENO) && EXPR_HAS_LOCATION (node))
     dump_location (buffer, EXPR_LOCATION (node));
 
-  switch (TREE_CODE (node))
+  code = TREE_CODE (node);
+  switch (code)
     {
     case ERROR_MARK:
       pp_string (buffer, "<<< error >>>");
@@ -2336,31 +2338,15 @@ dump_generic_node (pretty_printer *buffer, tree node, int spc, int flags,
       break;
 
     case VEC_WIDEN_MULT_HI_EXPR:
-      pp_string (buffer, " VEC_WIDEN_MULT_HI_EXPR < ");
-      dump_generic_node (buffer, TREE_OPERAND (node, 0), spc, flags, false);
-      pp_string (buffer, ", ");
-      dump_generic_node (buffer, TREE_OPERAND (node, 1), spc, flags, false);
-      pp_string (buffer, " > ");
-      break;
-
     case VEC_WIDEN_MULT_LO_EXPR:
-      pp_string (buffer, " VEC_WIDEN_MULT_LO_EXPR < ");
-      dump_generic_node (buffer, TREE_OPERAND (node, 0), spc, flags, false);
-      pp_string (buffer, ", ");
-      dump_generic_node (buffer, TREE_OPERAND (node, 1), spc, flags, false);
-      pp_string (buffer, " > ");
-      break;
-
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
     case VEC_WIDEN_LSHIFT_HI_EXPR:
-      pp_string (buffer, " VEC_WIDEN_LSHIFT_HI_EXPR < ");
-      dump_generic_node (buffer, TREE_OPERAND (node, 0), spc, flags, false);
-      pp_string (buffer, ", ");
-      dump_generic_node (buffer, TREE_OPERAND (node, 1), spc, flags, false);
-      pp_string (buffer, " > ");
-      break;
-
     case VEC_WIDEN_LSHIFT_LO_EXPR:
-      pp_string (buffer, " VEC_WIDEN_LSHIFT_HI_EXPR < ");
+      pp_character (buffer, ' ');
+      for (str = tree_code_name [code]; *str; str++)
+	pp_character (buffer, TOUPPER (*str));
+      pp_string (buffer, " < ");
       dump_generic_node (buffer, TREE_OPERAND (node, 0), spc, flags, false);
       pp_string (buffer, ", ");
       dump_generic_node (buffer, TREE_OPERAND (node, 1), spc, flags, false);
diff --git a/gcc/tree-vect-generic.c b/gcc/tree-vect-generic.c
index 8d05101..e37c631 100644
--- a/gcc/tree-vect-generic.c
+++ b/gcc/tree-vect-generic.c
@@ -1361,6 +1361,23 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi)
       || code == VEC_UNPACK_FLOAT_LO_EXPR)
     type = TREE_TYPE (rhs1);
 
+  /* For widening/narrowing vector operations, the relevant type is of the
+     arguments, not the widened result.  VEC_UNPACK_FLOAT_*_EXPR is
+     calculated in the same way above.  */
+  if (code == WIDEN_SUM_EXPR
+      || code == VEC_WIDEN_MULT_HI_EXPR
+      || code == VEC_WIDEN_MULT_LO_EXPR
+      || code == VEC_WIDEN_MULT_EVEN_EXPR
+      || code == VEC_WIDEN_MULT_ODD_EXPR
+      || code == VEC_UNPACK_HI_EXPR
+      || code == VEC_UNPACK_LO_EXPR
+      || code == VEC_PACK_TRUNC_EXPR
+      || code == VEC_PACK_SAT_EXPR
+      || code == VEC_PACK_FIX_TRUNC_EXPR
+      || code == VEC_WIDEN_LSHIFT_HI_EXPR
+      || code == VEC_WIDEN_LSHIFT_LO_EXPR)
+    type = TREE_TYPE (rhs1);
+
   /* Choose between vector shift/rotate by vector and vector shift/rotate by
      scalar */
   if (code == LSHIFT_EXPR
@@ -1409,21 +1426,6 @@ expand_vector_operations_1 (gimple_stmt_iterator *gsi)
   else
     op = optab_for_tree_code (code, type, optab_default);
 
-  /* For widening/narrowing vector operations, the relevant type is of the
-     arguments, not the widened result.  VEC_UNPACK_FLOAT_*_EXPR is
-     calculated in the same way above.  */
-  if (code == WIDEN_SUM_EXPR
-      || code == VEC_WIDEN_MULT_HI_EXPR
-      || code == VEC_WIDEN_MULT_LO_EXPR
-      || code == VEC_UNPACK_HI_EXPR
-      || code == VEC_UNPACK_LO_EXPR
-      || code == VEC_PACK_TRUNC_EXPR
-      || code == VEC_PACK_SAT_EXPR
-      || code == VEC_PACK_FIX_TRUNC_EXPR
-      || code == VEC_WIDEN_LSHIFT_HI_EXPR
-      || code == VEC_WIDEN_LSHIFT_LO_EXPR)
-    type = TREE_TYPE (rhs1);
-
   /* Optabs will try converting a negation into a subtraction, so
      look for it as well.  TODO: negation of floating-point vectors
      might be turned into an exclusive OR toggling the sign bit.  */
diff --git a/gcc/tree.c b/gcc/tree.c
index f92f070..d10b9ab 100644
--- a/gcc/tree.c
+++ b/gcc/tree.c
@@ -6927,6 +6927,8 @@ commutative_tree_code (enum tree_code code)
     case WIDEN_MULT_EXPR:
     case VEC_WIDEN_MULT_HI_EXPR:
     case VEC_WIDEN_MULT_LO_EXPR:
+    case VEC_WIDEN_MULT_EVEN_EXPR:
+    case VEC_WIDEN_MULT_ODD_EXPR:
       return true;
 
     default:
diff --git a/gcc/tree.def b/gcc/tree.def
index b0d4aea..70188ff 100644
--- a/gcc/tree.def
+++ b/gcc/tree.def
@@ -1171,6 +1171,10 @@ DEFTREECODE (VEC_RSHIFT_EXPR, "vec_rshift_expr", tcc_binary, 2)
 DEFTREECODE (VEC_WIDEN_MULT_HI_EXPR, "widen_mult_hi_expr", tcc_binary, 2)
 DEFTREECODE (VEC_WIDEN_MULT_LO_EXPR, "widen_mult_lo_expr", tcc_binary, 2)
 
+/* Similarly, but return the even or odd N/2 products.  */
+DEFTREECODE (VEC_WIDEN_MULT_EVEN_EXPR, "widen_mult_even_expr", tcc_binary, 2)
+DEFTREECODE (VEC_WIDEN_MULT_ODD_EXPR, "widen_mult_odd_expr", tcc_binary, 2)
+
 /* Unpack (extract and promote/widen) the high/low elements of the input
    vector into the output vector.  The input vector has twice as many
    elements as the output vector, that are half the size of the elements