[gcc r13-4740] middle-end/108086 - remove PR28238 fix superseeded by PR34018 fix

[gcc r13-4740] middle-end/108086 - remove PR28238 fix superseeded by PR34018 fix

[Richard Biener]

https://gcc.gnu.org/g:340ddeae6611f6ab524211a009e97a85b4bba549

commit r13-4740-g340ddeae6611f6ab524211a009e97a85b4bba549
Author: Richard Biener <rguenther@suse.de>
Date:   Fri Dec 16 09:46:25 2022 +0100

    middle-end/108086 - remove PR28238 fix superseeded by PR34018 fix
    
    There's quite special code in copy_bb that handles inline substitution
    of a non-invariant address in place of an invariant one that's
    now handled by more generic handling of this case in remap_gimple_op_r
    so this removes the special casing that happens in a hot path, providing
    a small speedup.
    
            PR middle-end/108086
            * tree-inline.cc (copy_bb): Remove handling of (foo *)&this->m
            substitution which is done in remap_gimple_op_r via
            re-gimplifying.

Diff:
---
 gcc/tree-inline.cc | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/gcc/tree-inline.cc b/gcc/tree-inline.cc
index 02d8c39c3e8..9fd971a034c 100644
--- a/gcc/tree-inline.cc
+++ b/gcc/tree-inline.cc
@@ -2074,21 +2074,6 @@ copy_bb (copy_body_data *id, basic_block bb,
 	  gimple_duplicate_stmt_histograms (cfun, stmt, id->src_cfun,
 					    orig_stmt);
 
-	  /* With return slot optimization we can end up with
-	     non-gimple (foo *)&this->m, fix that here.  */
-	  if (is_gimple_assign (stmt)
-	      && CONVERT_EXPR_CODE_P (gimple_assign_rhs_code (stmt))
-	      && !is_gimple_val (gimple_assign_rhs1 (stmt)))
-	    {
-	      tree new_rhs;
-	      new_rhs = force_gimple_operand_gsi (&seq_gsi,
-						  gimple_assign_rhs1 (stmt),
-						  true, NULL, false,
-						  GSI_CONTINUE_LINKING);
-	      gimple_assign_set_rhs1 (stmt, new_rhs);
-	      id->regimplify = false;
-	    }
-
 	  gsi_insert_after (&seq_gsi, stmt, GSI_NEW_STMT);
 
 	  if (id->regimplify)