From ee16d16e23f53704722b111e8791be49000c2965 Mon Sep 17 00:00:00 2001
From: Teddy <ted.sybil@gmail.com>
Date: Sun, 4 May 2014 09:27:32 +0800
Subject: ...

---
 ssa.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'ssa.c')

diff --git a/ssa.c b/ssa.c
index d69c959..31b82d7 100644
--- a/ssa.c
+++ b/ssa.c
@@ -1895,6 +1895,7 @@ void cinterv_union(COpr_t a, COpr_t b) {
     if (a == b) return;
     b->range = crange_merge(b->range, a->range);
     a->par = b;
+    b->mod |= a->mod;
 }
 
 void init_def() {
@@ -2132,6 +2133,11 @@ void register_alloc() {
                 colist_add(active, c); /* move cur to active */
             }
         }
+        else if (cur->mod)      /* may be referenced by a pointer */
+        {
+            cur->reg = -1;      /* assign a memory location to cur */
+            free(c);            /* and move cur to handled */
+        }
         else
         {
             cur->reg = reg; /* cur.reg <- any register in f */
-- 
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