From: Richard Stallman <rms@gnu.org>
Date: Fri, 6 Nov 1992 08:22:05 +0000 (+0000)
Subject: (copy_rtx_and_substitute)[ARGS_GROW_DOWNWARD]: Map
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=931553d837d3df3c65d8255add17dff148d7d075;p=gcc.git

(copy_rtx_and_substitute)[ARGS_GROW_DOWNWARD]: Map
virtual args pointer to the top of the argument block.

From-SVN: r2698
---

diff --git a/gcc/integrate.c b/gcc/integrate.c
index 611bbad6d14..118f49e82c9 100644
--- a/gcc/integrate.c
+++ b/gcc/integrate.c
@@ -1906,6 +1906,12 @@ copy_rtx_and_substitute (orig, map)
 	      start_sequence ();
 	      loc = assign_stack_temp (BLKmode, size, 1);
 	      loc = XEXP (loc, 0);
+	      /* When arguments grow downward, the virtual incoming 
+		 args pointer points to the top of the argument block,
+		 so the remapped location better do the same. */
+#ifdef ARGS_GROW_DOWNWARD
+	      loc = plus_constant (loc, size);
+#endif
 	      map->reg_map[regno] = temp
 		= force_reg (Pmode, force_operand (loc, NULL_RTX));
 	      map->const_equiv_map[REGNO (temp)] = loc;