[082/nnn] poly_int: omp-simd-clone.c

[Richard Sandiford]

This patch adds a wrapper around TYPE_VECTOR_SUBPARTS for omp-simd-clone.c.
Supporting SIMD clones for variable-length vectors is post GCC8 work.


2017-10-23  Richard Sandiford  <richard.sandif...@linaro.org>
            Alan Hayward  <alan.hayw...@arm.com>
            David Sherwood  <david.sherw...@arm.com>

gcc/
        * omp-simd-clone.c (simd_clone_subparts): New function.
        (simd_clone_init_simd_arrays): Use it instead of TYPE_VECTOR_SUBPARTS.
        (ipa_simd_modify_function_body): Likewise.

Index: gcc/omp-simd-clone.c
===================================================================
--- gcc/omp-simd-clone.c        2017-08-30 12:19:19.716220030 +0100
+++ gcc/omp-simd-clone.c        2017-10-23 17:22:47.947648317 +0100
@@ -51,6 +51,15 @@ Software Foundation; either version 3, o
 #include "stringpool.h"
 #include "attribs.h"
 
+/* Return the number of elements in vector type VECTYPE, which is associated
+   with a SIMD clone.  At present these always have a constant length.  */
+
+static unsigned HOST_WIDE_INT
+simd_clone_subparts (tree vectype)
+{
+  return TYPE_VECTOR_SUBPARTS (vectype);
+}
+
 /* Allocate a fresh `simd_clone' and return it.  NARGS is the number
    of arguments to reserve space for.  */
 
@@ -770,7 +779,7 @@ simd_clone_init_simd_arrays (struct cgra
            }
          continue;
        }
-      if (TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg)) == node->simdclone->simdlen)
+      if (simd_clone_subparts (TREE_TYPE (arg)) == node->simdclone->simdlen)
        {
          tree ptype = build_pointer_type (TREE_TYPE (TREE_TYPE (array)));
          tree ptr = build_fold_addr_expr (array);
@@ -781,7 +790,7 @@ simd_clone_init_simd_arrays (struct cgra
        }
       else
        {
-         unsigned int simdlen = TYPE_VECTOR_SUBPARTS (TREE_TYPE (arg));
+         unsigned int simdlen = simd_clone_subparts (TREE_TYPE (arg));
          tree ptype = build_pointer_type (TREE_TYPE (TREE_TYPE (array)));
          for (k = 0; k < node->simdclone->simdlen; k += simdlen)
            {
@@ -927,8 +936,8 @@ ipa_simd_modify_function_body (struct cg
                  iter,
                  NULL_TREE, NULL_TREE);
       if (adjustments[j].op == IPA_PARM_OP_NONE
-         && TYPE_VECTOR_SUBPARTS (vectype) < node->simdclone->simdlen)
-       j += node->simdclone->simdlen / TYPE_VECTOR_SUBPARTS (vectype) - 1;
+         && simd_clone_subparts (vectype) < node->simdclone->simdlen)
+       j += node->simdclone->simdlen / simd_clone_subparts (vectype) - 1;
     }
 
   l = adjustments.length ();