From: Andrew Burgess <aburgess@broadcom.com>
Date: Tue, 26 Nov 2013 16:21:53 +0000 (+0000)
Subject: Mark entirely optimized out value as non-lazy.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=4f14910fa1331398cc695011a6af43a89252b4b1;p=binutils-gdb.git

Mark entirely optimized out value as non-lazy.

If a value is entirely optimized out, then there's nothing for
value_fetch_lazy to fetch.  Sequences like:

 if (value_lazy (retval))
   value_fetch_lazy (retval);

End up allocating the value contents buffer, wasting memory, for no
use.

gdb/ChangeLog
2013-11-26  Andrew Burgess  <aburgess@broadcom.com>

	* value.c (allocate_optimized_out_value): Mark value as non-lazy.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 7e284361a77..c144565da2e 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,7 @@
+2013-11-26  Andrew Burgess  <aburgess@broadcom.com>
+
+	* value.c (allocate_optimized_out_value): Mark value as non-lazy.
+
 2013-11-26  Tom Tromey  <tromey@redhat.com>
 
 	* dwarf2-frame.c (dwarf2_frame_cache): Revert patch from
diff --git a/gdb/value.c b/gdb/value.c
index da7778f0192..8052f52f874 100644
--- a/gdb/value.c
+++ b/gdb/value.c
@@ -768,7 +768,7 @@ allocate_optimized_out_value (struct type *type)
   struct value *retval = allocate_value_lazy (type);
 
   set_value_optimized_out (retval, 1);
-
+  set_value_lazy (retval, 0);
   return retval;
 }