Use tree_vector_builder instead of build_vector

This patch switches most build_vector calls over to tree_vector_builder,
using explicit encodings where appropriate.  Later patches handle
the remaining uses of build_vector.

2017-12-07  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* config/sparc/sparc.c: Include tree-vector-builder.h.
	(sparc_fold_builtin): Use tree_vector_builder instead of build_vector.
	* expmed.c: Include tree-vector-builder.h.
	(make_tree): Use tree_vector_builder instead of build_vector.
	* fold-const.c: Include tree-vector-builder.h.
	(const_binop): Use tree_vector_builder instead of build_vector.
	(const_unop): Likewise.
	(native_interpret_vector): Likewise.
	(fold_vec_perm): Likewise.
	(fold_ternary_loc): Likewise.
	* gimple-fold.c: Include tree-vector-builder.h.
	(gimple_fold_stmt_to_constant_1): Use tree_vector_builder instead
	of build_vector.
	* tree-ssa-forwprop.c: Include tree-vector-builder.h.
	(simplify_vector_constructor): Use tree_vector_builder instead
	of build_vector.
	* tree-vect-generic.c: Include tree-vector-builder.h.
	(add_rshift): Use tree_vector_builder instead of build_vector.
	(expand_vector_divmod): Likewise.
	(optimize_vector_constructor): Likewise.
	* tree-vect-loop.c: Include tree-vector-builder.h.
	(vect_create_epilog_for_reduction): Use tree_vector_builder instead
	of build_vector.  Explicitly use a stepped encoding for
	{ 1, 2, 3, ... }.
	* tree-vect-slp.c: Include tree-vector-builder.h.
	(vect_get_constant_vectors): Use tree_vector_builder instead
	of build_vector.
	(vect_transform_slp_perm_load): Likewise.
	(vect_schedule_slp_instance): Likewise.
	* tree-vect-stmts.c: Include tree-vector-builder.h.
	(vectorizable_bswap): Use tree_vector_builder instead of build_vector.
	(vect_gen_perm_mask_any): Likewise.
	(vectorizable_call): Likewise.  Explicitly use a stepped encoding.
	* tree.c: (build_vector_from_ctor): Use tree_vector_builder instead
	of build_vector.
	(build_vector_from_val): Likewise.  Explicitly use a duplicate
	encoding.

From-SVN: r255475

1 files changed, 7 insertions, 6 deletions

diff --git a/gcc/config/sparc/sparc.c b/gcc/config/sparc/sparc.c
index 54e7a0e..a8d363c 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -57,6 +57,7 @@ along with GCC; see the file COPYING3.  If not see
 #include "tree-pass.h"
 #include "context.h"
 #include "builtins.h"
+#include "tree-vector-builder.h"
 
 /* This file should be included last.  */
 #include "target-def.h"
@@ -11752,14 +11753,14 @@ sparc_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED,
 	  tree inner_type = TREE_TYPE (rtype);
 	  unsigned i;
 
-	  auto_vec<tree, 32> n_elts (VECTOR_CST_NELTS (arg0));
+	  tree_vector_builder n_elts (rtype, VECTOR_CST_NELTS (arg0), 1);
 	  for (i = 0; i < VECTOR_CST_NELTS (arg0); ++i)
 	    {
 	      unsigned HOST_WIDE_INT val
 		= TREE_INT_CST_LOW (VECTOR_CST_ELT (arg0, i));
 	      n_elts.quick_push (build_int_cst (inner_type, val << 4));
 	    }
-	  return build_vector (rtype, n_elts);
+	  return n_elts.build ();
 	}
       break;
 
@@ -11774,9 +11775,9 @@ sparc_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED,
       if (TREE_CODE (arg0) == VECTOR_CST && TREE_CODE (arg1) == VECTOR_CST)
 	{
 	  tree inner_type = TREE_TYPE (rtype);
-	  auto_vec<tree, 32> n_elts (VECTOR_CST_NELTS (arg0));
+	  tree_vector_builder n_elts (rtype, VECTOR_CST_NELTS (arg0), 1);
 	  sparc_handle_vis_mul8x16 (&n_elts, code, inner_type, arg0, arg1);
-	  return build_vector (rtype, n_elts);
+	  return n_elts.build ();
 	}
       break;
 
@@ -11788,7 +11789,7 @@ sparc_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED,
 
       if (TREE_CODE (arg0) == VECTOR_CST && TREE_CODE (arg1) == VECTOR_CST)
 	{
-	  auto_vec<tree, 32> n_elts (2 * VECTOR_CST_NELTS (arg0));
+	  tree_vector_builder n_elts (rtype, 2 * VECTOR_CST_NELTS (arg0), 1);
 	  unsigned i;
 	  for (i = 0; i < VECTOR_CST_NELTS (arg0); ++i)
 	    {
@@ -11796,7 +11797,7 @@ sparc_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED,
 	      n_elts.quick_push (VECTOR_CST_ELT (arg1, i));
 	    }
 
-	  return build_vector (rtype, n_elts);
+	  return n_elts.build ();
 	}
       break;