[PATCH] Remove get_or_alloc_expression_id

[Richard Biener <rguenther@suse.de>]

This function is no longer needed.

Bootstrapped and tested on x86_64-unknown-linux-gnu with a change
to assert it is computed when queried.

Pushed.

2022-05-19  Richard Biener  <rguenther@suse.de>

	* tree-ssa-pre.cc (get_or_alloc_expression_id): Remove.
	(add_to_value): Use get_expression_id.
	(bitmap_insert_into_set): Likewise.
	(bitmap_value_insert_into_set): Likewise.
---
 gcc/tree-ssa-pre.cc | 18 +++---------------
 1 file changed, 3 insertions(+), 15 deletions(-)

diff --git a/gcc/tree-ssa-pre.cc b/gcc/tree-ssa-pre.cc
index 34d77f1e2cf..09a5e2055ca 100644
--- a/gcc/tree-ssa-pre.cc
+++ b/gcc/tree-ssa-pre.cc
@@ -384,18 +384,6 @@ lookup_expression_id (const pre_expr expr)
     }
 }
 
-/* Return the existing expression id for EXPR, or create one if one
-   does not exist yet.  */
-
-static inline unsigned int
-get_or_alloc_expression_id (pre_expr expr)
-{
-  unsigned int id = lookup_expression_id (expr);
-  if (id == 0)
-    return alloc_expression_id (expr);
-  return expr->id = id;
-}
-
 /* Return the expression that has expression id ID */
 
 static inline pre_expr
@@ -729,7 +717,7 @@ add_to_value (unsigned int v, pre_expr e)
 	  set = BITMAP_ALLOC (&grand_bitmap_obstack);
 	  value_expressions[v] = set;
 	}
-      bitmap_set_bit (set, get_or_alloc_expression_id (e));
+      bitmap_set_bit (set, get_expression_id (e));
     }
 }
 
@@ -792,7 +780,7 @@ bitmap_insert_into_set (bitmap_set_t set, pre_expr expr)
          for the same value to appear in a set.  This is needed for
 	 TMP_GEN, PHI_GEN and NEW_SETs.  */
       bitmap_set_bit (&set->values, val);
-      bitmap_set_bit (&set->expressions, get_or_alloc_expression_id (expr));
+      bitmap_set_bit (&set->expressions, get_expression_id (expr));
     }
 }
 
@@ -1030,7 +1018,7 @@ bitmap_value_insert_into_set (bitmap_set_t set, pre_expr expr)
 {
   unsigned int val = get_expr_value_id (expr);
 
-  gcc_checking_assert (expr->id == get_or_alloc_expression_id (expr));
+  gcc_checking_assert (expr->id == get_expression_id (expr));
 
   /* Constant values are always considered to be part of the set.  */
   if (value_id_constant_p (val))
-- 
2.35.3