From 2d05784e6f0d45637de623f81936cb19d56e35cb Mon Sep 17 00:00:00 2001
From: rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Sat, 9 Oct 2004 20:19:37 +0000
Subject: 	PR tree-optimization/17906 	* tree-tailcall.c
 (tree_optimize_tail_calls_1): Do not attempt to 	copy non-gimple reg
 arguments.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@88828 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/tree-tailcall.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'gcc/tree-tailcall.c')

diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c
index 34ac8ee5834..00fdea301ad 100644
--- a/gcc/tree-tailcall.c
+++ b/gcc/tree-tailcall.c
@@ -870,7 +870,8 @@ tree_optimize_tail_calls_1 (bool opt_tailcalls)
 	  for (param = DECL_ARGUMENTS (current_function_decl);
 	       param;
 	       param = TREE_CHAIN (param))
-	    if (var_ann (param)
+	    if (is_gimple_reg (param)
+		&& var_ann (param)
 		/* Also parameters that are only defined but never used need not
 		   be copied.  */
 		&& (var_ann (param)->default_def
-- 
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