[gcc r13-2381] rs6000: Use NO_EXPR to cast to MMA pointer types

[gcc r13-2381] rs6000: Use NO_EXPR to cast to MMA pointer types

[Peter Bergner]

https://gcc.gnu.org/g:65c12e3894cac120c721c5d3fe94daa625ac8194

commit r13-2381-g65c12e3894cac120c721c5d3fe94daa625ac8194
Author: Peter Bergner <bergner@linux.ibm.com>
Date:   Fri Sep 2 11:59:56 2022 -0500

    rs6000: Use NO_EXPR to cast to MMA pointer types
    
    When we cast pointers to our opaque MMA pointers, use NOP_EXPR rather
    than VIEW_CONVERT_EXPR.
    
    2022-09-02  Peter Bergner  <bergner@linux.ibm.com>
    
    gcc/
            * config/rs6000/rs6000-builtin.cc (rs6000_gimple_fold_mma_builtin): Use
            NOP_EXPR for MMA pointer casting.

Diff:
---
 gcc/config/rs6000/rs6000-builtin.cc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/gcc/config/rs6000/rs6000-builtin.cc b/gcc/config/rs6000/rs6000-builtin.cc
index 65b950d4458..6dfb0db43d6 100644
--- a/gcc/config/rs6000/rs6000-builtin.cc
+++ b/gcc/config/rs6000/rs6000-builtin.cc
@@ -1098,7 +1098,7 @@ rs6000_gimple_fold_mma_builtin (gimple_stmt_iterator *gsi,
 	  || (fncode == RS6000_BIF_DISASSEMBLE_PAIR_V
 	      && TREE_TYPE (TREE_TYPE (dst_ptr)) == vector_pair_type_node))
 	{
-	  tree dst = build_simple_mem_ref (build1 (VIEW_CONVERT_EXPR,
+	  tree dst = build_simple_mem_ref (build1 (NOP_EXPR,
 						   src_type, dst_ptr));
 	  gimplify_assign (dst, src, &new_seq);
 	  pop_gimplify_context (NULL);
@@ -1122,7 +1122,7 @@ rs6000_gimple_fold_mma_builtin (gimple_stmt_iterator *gsi,
 	= rs6000_builtin_decls[rs6000_builtin_info[fncode].assoc_bif];
       tree dst_type = build_pointer_type_for_mode (unsigned_V16QI_type_node,
 						   ptr_mode, true);
-      tree dst_base = build1 (VIEW_CONVERT_EXPR, dst_type, dst_ptr);
+      tree dst_base = build1 (NOP_EXPR, dst_type, dst_ptr);
       for (unsigned i = 0; i < nvec; i++)
 	{
 	  unsigned index = WORDS_BIG_ENDIAN ? i : nvec - 1 - i;
@@ -1148,7 +1148,7 @@ rs6000_gimple_fold_mma_builtin (gimple_stmt_iterator *gsi,
       tree ptr = gimple_call_arg (stmt, 1);
       tree lhs = gimple_call_lhs (stmt);
       if (TREE_TYPE (TREE_TYPE (ptr)) != vector_pair_type_node)
-	ptr = build1 (VIEW_CONVERT_EXPR,
+	ptr = build1 (NOP_EXPR,
 		      build_pointer_type (vector_pair_type_node), ptr);
       tree mem = build_simple_mem_ref (build2 (POINTER_PLUS_EXPR,
 					       TREE_TYPE (ptr), ptr, offset));
@@ -1165,7 +1165,7 @@ rs6000_gimple_fold_mma_builtin (gimple_stmt_iterator *gsi,
       tree offset = gimple_call_arg (stmt, 1);
       tree ptr = gimple_call_arg (stmt, 2);
       if (TREE_TYPE (TREE_TYPE (ptr)) != vector_pair_type_node)
-	ptr = build1 (VIEW_CONVERT_EXPR,
+	ptr = build1 (NOP_EXPR,
 		      build_pointer_type (vector_pair_type_node), ptr);
       tree mem = build_simple_mem_ref (build2 (POINTER_PLUS_EXPR,
 					       TREE_TYPE (ptr), ptr, offset));