tree-cfg.c (verify_gimple_assign_unary): Allow vector conversions.

2011-10-30  Dmitry Plotnikov  <dplotnikov@ispras.ru>

        * tree-cfg.c (verify_gimple_assign_unary): Allow vector conversions.
        * optabs.c (supportable_convert_operation): New function.
        * optabs.h (supportable_convert_operation): New prototype.
        * tree-vect-stmts.c (vectorizable_conversion): Change condition and
        behavior for NONE modifier case.
        * tree.h (VECTOR_INTEGER_TYPE_P): New macro.

From-SVN: r180684

gcc/ChangeLog

+2011-10-30  Dmitry Plotnikov  <dplotnikov@ispras.ru>
+
+	* tree-cfg.c (verify_gimple_assign_unary): Allow vector conversions.
+	* optabs.c (supportable_convert_operation): New function.
+	* optabs.h (supportable_convert_operation): New prototype.
+	* tree-vect-stmts.c (vectorizable_conversion): Change condition and
+	behavior for NONE modifier case.
+	* tree.h (VECTOR_INTEGER_TYPE_P): New macro.
+
 2011-10-30  Jakub Jelinek  <jakub@redhat.com>
 
 	* tree-vectorizer.h (NUM_PATTERNS): Bump to 9.

gcc/optabs.c

@@ -4824,6 +4824,60 @@ can_float_p (enum machine_mode fltmode, enum machine_mode fixmode,
   tab = unsignedp ? ufloat_optab : sfloat_optab;
   return convert_optab_handler (tab, fltmode, fixmode);
 }
+
+/* Function supportable_convert_operation
+
+   Check whether an operation represented by the code CODE is a
+   convert operation that is supported by the target platform in
+   vector form (i.e., when operating on arguments of type VECTYPE_IN
+   producing a result of type VECTYPE_OUT).
+   
+   Convert operations we currently support directly are FIX_TRUNC and FLOAT.
+   This function checks if these operations are supported
+   by the target platform either directly (via vector tree-codes), or via
+   target builtins.
+   
+   Output:
+   - CODE1 is code of vector operation to be used when
+   vectorizing the operation, if available.
+   - DECL is decl of target builtin functions to be used
+   when vectorizing the operation, if available.  In this case,
+   CODE1 is CALL_EXPR.  */
+
+bool
+supportable_convert_operation (enum tree_code code,
+                                    tree vectype_out, tree vectype_in,
+                                    tree *decl, enum tree_code *code1)
+{
+  enum machine_mode m1,m2;
+  int truncp;
+
+  m1 = TYPE_MODE (vectype_out);
+  m2 = TYPE_MODE (vectype_in);
+
+  /* First check if we can done conversion directly.  */
+  if ((code == FIX_TRUNC_EXPR 
+       && can_fix_p (m1,m2,TYPE_UNSIGNED (vectype_out), &truncp) 
+          != CODE_FOR_nothing)
+      || (code == FLOAT_EXPR
+          && can_float_p (m1,m2,TYPE_UNSIGNED (vectype_in))
+	     != CODE_FOR_nothing))
+    {
+      *code1 = code;
+      return true;
+    }
+
+  /* Now check for builtin.  */
+  if (targetm.vectorize.builtin_conversion
+      && targetm.vectorize.builtin_conversion (code, vectype_out, vectype_in))
+    {
+      *code1 = CALL_EXPR;
+      *decl = targetm.vectorize.builtin_conversion (code, vectype_out, vectype_in);
+      return true;
+    }
+  return false;
+}
+
 
 /* Generate code to convert FROM to floating point
    and store in TO.  FROM must be fixed point and not VOIDmode.

gcc/optabs.h

@@ -883,6 +883,12 @@ extern void expand_float (rtx, rtx, int);
 /* Return the insn_code for a FLOAT_EXPR.  */
 enum insn_code can_float_p (enum machine_mode, enum machine_mode, int);
 
+/* Check whether an operation represented by the code CODE is a
+   convert operation that is supported by the target platform in
+   vector form */
+bool supportable_convert_operation (enum tree_code, tree, tree, tree *, 
+                                    enum tree_code *);
+
 /* Generate code for a FIX_EXPR.  */
 extern void expand_fix (rtx, rtx, int);
 

gcc/tree-cfg.c

@@ -3342,7 +3342,9 @@ verify_gimple_assign_unary (gimple stmt)
 
     case FLOAT_EXPR:
       {
-	if (!INTEGRAL_TYPE_P (rhs1_type) || !SCALAR_FLOAT_TYPE_P (lhs_type))
+	if ((!INTEGRAL_TYPE_P (rhs1_type) || !SCALAR_FLOAT_TYPE_P (lhs_type))
+	    && (!VECTOR_INTEGER_TYPE_P (rhs1_type)
+	        || !VECTOR_FLOAT_TYPE_P(lhs_type)))
 	  {
 	    error ("invalid types in conversion to floating point");
 	    debug_generic_expr (lhs_type);
@@ -3355,7 +3357,9 @@ verify_gimple_assign_unary (gimple stmt)
 
     case FIX_TRUNC_EXPR:
       {
-	if (!INTEGRAL_TYPE_P (lhs_type) || !SCALAR_FLOAT_TYPE_P (rhs1_type))
+        if ((!INTEGRAL_TYPE_P (lhs_type) || !SCALAR_FLOAT_TYPE_P (rhs1_type))
+            && (!VECTOR_INTEGER_TYPE_P (lhs_type)
+                || !VECTOR_FLOAT_TYPE_P(rhs1_type)))
 	  {
 	    error ("invalid types in conversion to integer");
 	    debug_generic_expr (lhs_type);

gcc/tree-vect-stmts.c

@@ -1824,7 +1824,6 @@ vect_gen_widened_results_half (enum tree_code code,
   return new_stmt;
 }
 
-
 /* Check if STMT performs a conversion operation, that can be vectorized.
    If VEC_STMT is also passed, vectorize the STMT: create a vectorized
    stmt to replace it, put it in VEC_STMT, and insert it at BSI.
@@ -1853,7 +1852,6 @@ vectorizable_conversion (gimple stmt, gimple_stmt_iterator *gsi,
   tree vectype_out, vectype_in;
   int ncopies, j;
   tree rhs_type;
-  tree builtin_decl;
   enum { NARROW, NONE, WIDEN } modifier;
   int i;
   VEC(tree,heap) *vec_oprnds0 = NULL;
@@ -1942,7 +1940,7 @@ vectorizable_conversion (gimple stmt, gimple_stmt_iterator *gsi,
 
   /* Supportable by target?  */
   if ((modifier == NONE
-       && !targetm.vectorize.builtin_conversion (code, vectype_out, vectype_in))
+       && !supportable_convert_operation (code, vectype_out, vectype_in, &decl1, &code1))
       || (modifier == WIDEN
 	  && !supportable_widening_operation (code, stmt,
 					      vectype_out, vectype_in,
@@ -1992,19 +1990,28 @@ vectorizable_conversion (gimple stmt, gimple_stmt_iterator *gsi,
 	  else
 	    vect_get_vec_defs_for_stmt_copy (dt, &vec_oprnds0, NULL);
 
-	  builtin_decl =
-	    targetm.vectorize.builtin_conversion (code,
-						  vectype_out, vectype_in);
 	  FOR_EACH_VEC_ELT (tree, vec_oprnds0, i, vop0)
-	    {
-	      /* Arguments are ready. create the new vector stmt.  */
-	      new_stmt = gimple_build_call (builtin_decl, 1, vop0);
-	      new_temp = make_ssa_name (vec_dest, new_stmt);
-	      gimple_call_set_lhs (new_stmt, new_temp);
-	      vect_finish_stmt_generation (stmt, new_stmt, gsi);
-	      if (slp_node)
-		VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt);
-	    }
+          {
+            /* Arguments are ready, create the new vector stmt.  */
+            if (code1 == CALL_EXPR)
+              {
+                new_stmt = gimple_build_call (decl1, 1, vop0);
+                new_temp = make_ssa_name (vec_dest, new_stmt);
+                gimple_call_set_lhs (new_stmt, new_temp);
+              }
+            else
+              {
+                gcc_assert (TREE_CODE_LENGTH (code) == unary_op);
+                new_stmt = gimple_build_assign_with_ops (code, vec_dest, vop0,
+                                                        NULL);
+                new_temp = make_ssa_name (vec_dest, new_stmt);
+                gimple_assign_set_lhs (new_stmt, new_temp);
+              }
+
+            vect_finish_stmt_generation (stmt, new_stmt, gsi);
+            if (slp_node)
+              VEC_quick_push (gimple, SLP_TREE_VEC_STMTS (slp_node), new_stmt);
+          }
 
 	  if (j == 0)
 	    STMT_VINFO_VEC_STMT (stmt_info) = *vec_stmt = new_stmt;

gcc/tree.h

@@ -1120,6 +1120,13 @@ extern void omp_clause_range_check_failed (const_tree, const char *, int,
   (TREE_CODE (TYPE) == COMPLEX_TYPE	\
    && TREE_CODE (TREE_TYPE (TYPE)) == REAL_TYPE)
 
+/* Nonzero if TYPE represents a vector integer type.  */
+                
+#define VECTOR_INTEGER_TYPE_P(TYPE)                   \
+             (TREE_CODE (TYPE) == VECTOR_TYPE      \
+                 && TREE_CODE (TREE_TYPE (TYPE)) == INTEGER_TYPE)
+
+
 /* Nonzero if TYPE represents a vector floating-point type.  */
 
 #define VECTOR_FLOAT_TYPE_P(TYPE)	\