From: Richard Kenner <kenner@gcc.gnu.org>
Date: Mon, 6 May 1996 22:45:05 +0000 (-0400)
Subject: (assign_parms): Set RTX_UNCHANGING_P in stack_parm if parm is
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=a00285d03514d4c4b2e627a1d4cb453afcdf3d43;p=gcc.git

(assign_parms): Set RTX_UNCHANGING_P in stack_parm if parm is
read-only.

From-SVN: r11944
---

diff --git a/gcc/function.c b/gcc/function.c
index 4d0966f1158..0af5a69d38c 100644
--- a/gcc/function.c
+++ b/gcc/function.c
@@ -3463,8 +3463,10 @@ assign_parms (fndecl, second_time)
 					   internal_arg_pointer, offset_rtx));
 
 	  /* If this is a memory ref that contains aggregate components,
-	     mark it as such for cse and loop optimize.  */
+	     mark it as such for cse and loop optimize.  Likewise if it
+	     is readonly.  */
 	  MEM_IN_STRUCT_P (stack_parm) = aggregate;
+	  RTX_UNCHANGING_P (stack_parm) = TREE_READONLY (parm);
 	}
 
       /* If this parameter was passed both in registers and in the stack,