diff mbox series

operand scanner TLC

Message ID 63354qqo-37o5-r163-9q2r-226p6171713@fhfr.qr
State New
Headers show
Series operand scanner TLC | expand

Commit Message

Richard Biener May 18, 2021, 9:35 a.m. UTC 
This applies some TLC to mark_address_taken which ends up setting
TREE_ADDRESSABLE on nodes where it doesn't have any semantics.
It also does work (incomplete) that get_base_address already does,
likewise we'll never get WITH_SIZE_EXPR in this context and thus
get_base_address never fails.

Bootstrapped and tested on x86_64-unknown-linux-gnu, pushed.

2021-05-18  Richard Biener  <rguenther@suse.de>

	* tree-ssa-operands.c (mark_address_taken): Simplify.
---
 gcc/tree-ssa-operands.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/gcc/tree-ssa-operands.c b/gcc/tree-ssa-operands.c
index 9e620883d44..2fc74d51917 100644
--- a/gcc/tree-ssa-operands.c
+++ b/gcc/tree-ssa-operands.c
@@ -626,15 +626,10 @@  mark_address_taken (tree ref)
      be referenced using pointer arithmetic.  See PR 21407 and the
      ensuing mailing list discussion.  */
   var = get_base_address (ref);
-  if (var)
-    {
-      if (DECL_P (var))
-	TREE_ADDRESSABLE (var) = 1;
-      else if (TREE_CODE (var) == MEM_REF
-	       && TREE_CODE (TREE_OPERAND (var, 0)) == ADDR_EXPR
-	       && DECL_P (TREE_OPERAND (TREE_OPERAND (var, 0), 0)))
-	TREE_ADDRESSABLE (TREE_OPERAND (TREE_OPERAND (var, 0), 0)) = 1;
-    }
+  if (VAR_P (var)
+      || TREE_CODE (var) == RESULT_DECL
+      || TREE_CODE (var) == PARM_DECL)
+    TREE_ADDRESSABLE (var) = 1;
 }