Ignore clobbers in modref

* ipa-modref.c (analyze_stmt): Ignore gimple clobber.
2020-09-22 22:36:01 +02:00 · 2020-09-22 22:36:01 +02:00 · 5cfb06b61b
commit 5cfb06b61b
parent d6587211c0
1 changed files with 3 additions and 0 deletions
--- a/gcc/ipa-modref.c
+++ b/gcc/ipa-modref.c
@ -552,6 +552,9 @@ analyze_store (gimple *, tree, tree op, void *data)
 static bool
 analyze_stmt (modref_summary *summary, gimple *stmt, bool ipa)
 {
+  /* There is no need to record clobbers.  */
+  if (gimple_clobber_p (stmt))
+    return false;
  /* Analyze all loads and stores in STMT.  */
  walk_stmt_load_store_ops (stmt, summary,
 			    analyze_load, analyze_store);