From: Jan Hubicka <jh@suse.cz>
Date: Wed, 18 Aug 2021 11:25:28 +0000 (+0200)
Subject: Add EAF_NOREAD check to tree-ssa-uninit
X-Git-Tag: basepoints/gcc-13~5325
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e12946df34c997e96c3bc7eb5a0247e889ddb7ea;p=thirdparty%2Fgcc.git

Add EAF_NOREAD check to tree-ssa-uninit

gcc/ChangeLog:

2021-08-18  Jan Hubicka  <hubicka@ucw.cz>

	* tree-ssa-uninit.c (maybe_warn_pass_by_reference): Check also
	EAF_NOREAD.
---

diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c
index d5cdffbae8bf..ad2cf48819b3 100644
--- a/gcc/tree-ssa-uninit.c
+++ b/gcc/tree-ssa-uninit.c
@@ -712,7 +712,7 @@ maybe_warn_pass_by_reference (gcall *stmt, wlimits &wlims)
 	wlims.always_executed = false;
 
       /* Ignore args we are not going to read from.  */
-      if (gimple_call_arg_flags (stmt, argno - 1) & EAF_UNUSED)
+      if (gimple_call_arg_flags (stmt, argno - 1) & (EAF_UNUSED | EAF_NOREAD))
 	continue;
 
       tree arg = gimple_call_arg (stmt, argno - 1);