From: Diego Novillo <dnovillo@redhat.com>
Date: Sat, 18 Sep 2004 13:56:23 +0000 (+0000)
Subject: tree-ssa-alias.c (setup_pointers_and_addressables): Don't remove TREE_ADDRESSABLE... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=57e28d7d7659ab3102d38deba7f02a687aa316d8;p=gcc.git

tree-ssa-alias.c (setup_pointers_and_addressables): Don't remove TREE_ADDRESSABLE from RESULT_DECL.


	* tree-ssa-alias.c (setup_pointers_and_addressables): Don't
	remove TREE_ADDRESSABLE from RESULT_DECL.

testsuite/ChangeLog

	* g++.dg/tree-ssa/pr17153.C: New test.

From-SVN: r87703
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5981fed67f9..8ac66921107 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2004-09-18  Diego Novillo  <dnovillo@redhat.com>
+
+	* tree-ssa-alias.c (setup_pointers_and_addressables): Don't
+	remove TREE_ADDRESSABLE from RESULT_DECL.
+
 2004-09-18  Diego Novillo  <dnovillo@redhat.com>
 
 	* tree-ssa-alias.c (dump_alias_info): Ignore NULL SSA_NAMEs.
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ddc44e64cdf..4bb46044e19 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2004-09-18  Diego Novillo  <dnovillo@redhat.com>
+
+	* g++.dg/tree-ssa/pr17153.C: New test.
+
 2004-09-16  Geoffrey Keating  <geoffk@apple.com>
 
 	PR pch/13361
diff --git a/gcc/testsuite/g++.dg/tree-ssa/pr17153.C b/gcc/testsuite/g++.dg/tree-ssa/pr17153.C
new file mode 100644
index 00000000000..91b4cfe1503
--- /dev/null
+++ b/gcc/testsuite/g++.dg/tree-ssa/pr17153.C
@@ -0,0 +1,17 @@
+/* The alias analyzer was marking RETVAL non-addressable, but RETVAL
+   is a special variable that's available across different functions.  */
+void foo(const char*);
+
+struct A {};
+
+struct B : A
+{
+    B(){}
+    B bar()
+    {
+        foo(__PRETTY_FUNCTION__);
+        return B();
+    };
+};
+
+B b=B().bar();
diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c
index 34d9bb04212..baf5ff27696 100644
--- a/gcc/tree-ssa-alias.c
+++ b/gcc/tree-ssa-alias.c
@@ -1347,6 +1347,7 @@ setup_pointers_and_addressables (struct alias_info *ai)
 	{
 	  if (!bitmap_bit_p (ai->addresses_needed, v_ann->uid)
 	      && v_ann->mem_tag_kind == NOT_A_TAG
+	      && TREE_CODE (var) != RESULT_DECL
 	      && !is_global_var (var))
 	    {
 	      /* The address of VAR is not needed, remove the