From: Richard Biener <rguenther@suse.de>
Date: Fri, 17 Feb 2017 10:43:27 +0000 (+0000)
Subject: re PR inline-asm/79552 (Wrong code generation due to -fschedule-insns, with __restric... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=1dc5814cc55f11a4256d3c41563fb7cde31d060b;p=gcc.git

re PR inline-asm/79552 (Wrong code generation due to -fschedule-insns, with __restrict__ and inline asm)

2017-02-17  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/79552
	* tree-ssa-structalias.c (visit_loadstore): Properly verify
	default defs.

From-SVN: r245528
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 96ae59a0a7e..03f490fbf37 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-02-17  Richard Biener  <rguenther@suse.de>
+
+	PR tree-optimization/79552
+	* tree-ssa-structalias.c (visit_loadstore): Properly verify
+	default defs.
+
 2017-02-17  Richard Biener  <rguenther@suse.de>
 
 	PR bootstrap/79567
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c
index 390d5bba2fd..c043e5ec3a6 100644
--- a/gcc/tree-ssa-structalias.c
+++ b/gcc/tree-ssa-structalias.c
@@ -7296,9 +7296,15 @@ visit_loadstore (gimple *, tree base, tree ref, void *data)
       || TREE_CODE (base) == TARGET_MEM_REF)
     {
       tree ptr = TREE_OPERAND (base, 0);
-      if (TREE_CODE (ptr) == SSA_NAME
-	  && ! SSA_NAME_IS_DEFAULT_DEF (ptr))
+      if (TREE_CODE (ptr) == SSA_NAME)
 	{
+	  /* For parameters, get at the points-to set for the actual parm
+	     decl.  */
+	  if (SSA_NAME_IS_DEFAULT_DEF (ptr)
+	      && (TREE_CODE (SSA_NAME_VAR (ptr)) == PARM_DECL
+		  || TREE_CODE (SSA_NAME_VAR (ptr)) == RESULT_DECL))
+	    ptr = SSA_NAME_VAR (ptr);
+
 	  /* We need to make sure 'ptr' doesn't include any of
 	     the restrict tags we added bases for in its points-to set.  */
 	  varinfo_t vi = lookup_vi_for_tree (ptr);