From 0dfa4517b711f3dc98501605375462e5f3d00cba Mon Sep 17 00:00:00 2001
From: Richard Kenner <kenner@gcc.gnu.org>
Date: Fri, 16 Sep 1994 19:22:39 -0400
Subject: [PATCH] (global_alloc): Mark regs assigned to SCRATCH as used by more
 than just local alloc.

From-SVN: r8091
---
 gcc/global.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/gcc/global.c b/gcc/global.c
index 08a0f8a1e6d..ff86feca1f1 100644
--- a/gcc/global.c
+++ b/gcc/global.c
@@ -446,6 +446,18 @@ global_alloc (file)
     if (regs_ever_live[i])
       local_reg_n_refs[i] = 0;
 
+  /* Likewise for regs used in a SCRATCH.  */
+  for (i = 0; i < scratch_list_length; i++)
+    if (scratch_list[i])
+      {
+	int regno = REGNO (scratch_list[i]);
+	int lim = regno + HARD_REGNO_NREGS (regno, GET_MODE (scratch_list[i]));
+	int j;
+
+	for (j = regno; j < lim; j++)
+	  local_reg_n_refs[j] = 0;
+      }
+	
   /* Allocate the space for the conflict and preference tables and
      initialize them.  */