gas/

[deliverable/binutils-gdb.git] / gas / frags.c

diff --git a/gas/frags.c b/gas/frags.c
index 21fe26287d7d83115718a13f27773b0ef36a6248..6dae8bc9c2290ea395d22330677b5c8bac71369d 100644 (file)
--- a/gas/frags.c
+++ b/gas/frags.c
@@ -91,7 +91,14 @@ frag_grow (unsigned int nchars)
       frag_wane (frag_now);
       frag_new (0);
       oldc = frchain_now->frch_obstack.chunk_size;
-      frchain_now->frch_obstack.chunk_size = 2 * nchars + SIZEOF_STRUCT_FRAG;
+      /* Try to allocate a bit more than needed right now.  But don't do
+         this if we would waste too much memory.  Especially necessary
+        for extremely big (like 2GB initialized) frags.  */
+      if (nchars < 0x10000)
+       frchain_now->frch_obstack.chunk_size = 2 * nchars;
+      else
+        frchain_now->frch_obstack.chunk_size = nchars + 0x10000;
+      frchain_now->frch_obstack.chunk_size += SIZEOF_STRUCT_FRAG;
       if (frchain_now->frch_obstack.chunk_size > 0)
        while ((n = obstack_room (&frchain_now->frch_obstack)) < nchars
               && (unsigned long) frchain_now->frch_obstack.chunk_size > nchars)