From: Jan Hubicka <hubicka@ucw.cz>
Date: Mon, 23 Aug 2021 14:16:25 +0000 (+0200)
Subject: Fix previous ipa-modref patch
X-Git-Tag: basepoints/gcc-13~5230
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5bd4ab91660c8f5534c46979d4846a4f1a0972b0;p=thirdparty%2Fgcc.git

Fix previous ipa-modref patch

gcc/ChangeLog:

	PR middle-end/101949
	* ipa-modref.c (analyze_ssa_name_flags): Fix merging of
	EAF_NOCLOBBER
---

diff --git a/gcc/ipa-modref.c b/gcc/ipa-modref.c
index cb0a314cbeb3..6ab687a7ba05 100644
--- a/gcc/ipa-modref.c
+++ b/gcc/ipa-modref.c
@@ -1707,7 +1707,7 @@ analyze_ssa_name_flags (tree name, vec<modref_lattice> &lattice, int depth,
 	     is on since that would allow propagation of this from -fno-ipa-pta
 	     to -fipa-pta functions.  */
 	  if (gimple_call_fn (use_stmt) == name)
-	    lattice[index].merge (~EAF_NOCLOBBER);
+	    lattice[index].merge (~(EAF_NOCLOBBER | EAF_UNUSED));
 
 	  /* Recursion would require bit of propagation; give up for now.  */
 	  if (callee && !ipa && recursive_call_p (current_function_decl,