From: Richard Guenther <rguenther@suse.de>
Date: Tue, 22 May 2012 09:33:42 +0000 (+0000)
Subject: re PR middle-end/53437 (FAIL: gcc.dg/guality/inline-params.c  -O0)
X-Git-Tag: misc/gccgo-go1_1_2~2762
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=27eb31c9de20cd2eb1980c49d1dc2e3bc48483f0;p=thirdparty%2Fgcc.git

re PR middle-end/53437 (FAIL: gcc.dg/guality/inline-params.c  -O0)

2012-05-22  Richard Guenther  <rguenther@suse.de>

	PR middle-end/53437
	* tree-inline.c (setup_one_parameter): Create a dummy init
	statement for unused parameters when not optimizing.

From-SVN: r187767
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fc082836fbc3..f73965d36670 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-05-22  Richard Guenther  <rguenther@suse.de>
+
+	PR middle-end/53437
+	* tree-inline.c (setup_one_parameter): Create a dummy init
+	statement for unused parameters when not optimizing.
+
 2012-05-22  Richard Guenther  <rguenther@suse.de>
 
 	* tree-flow.h (add_referenced_var_1): Declare.
diff --git a/gcc/tree-inline.c b/gcc/tree-inline.c
index 060b6e5442fe..8c116f641be3 100644
--- a/gcc/tree-inline.c
+++ b/gcc/tree-inline.c
@@ -2701,7 +2701,8 @@ setup_one_parameter (copy_body_data *id, tree p, tree value, tree fn,
       STRIP_USELESS_TYPE_CONVERSION (rhs);
 
       /* If we are in SSA form properly remap the default definition
-         or omit the initialization if the parameter is unused.  */
+         or assign to a dummy SSA name if the parameter is unused and
+	 we are not optimizing.  */
       if (gimple_in_ssa_p (cfun) && is_gimple_reg (p))
 	{
 	  if (def)
@@ -2711,6 +2712,11 @@ setup_one_parameter (copy_body_data *id, tree p, tree value, tree fn,
 	      SSA_NAME_IS_DEFAULT_DEF (def) = 0;
 	      set_default_def (var, NULL);
 	    }
+	  else if (!optimize)
+	    {
+	      def = make_ssa_name (var, NULL);
+	      init_stmt = gimple_build_assign (def, rhs);
+	    }
 	}
       else
         init_stmt = gimple_build_assign (var, rhs);