From: Hans-Peter Nilsson <hp@axis.com>
Date: Sun, 16 Oct 2005 21:30:42 +0000 (+0000)
Subject: builtins.c (get_builtin_sync_mode): Make unlimited mode_for_size request.
X-Git-Tag: misc/cutover-cvs2svn~146
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2de0aa52f5ee8922501cb42999a66c7ac7448d2b;p=thirdparty%2Fgcc.git

builtins.c (get_builtin_sync_mode): Make unlimited mode_for_size request.

	* builtins.c (get_builtin_sync_mode): Make unlimited
	mode_for_size request.

From-SVN: r105469
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9384f1705a90..e0eeab178a52 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-10-16  Hans-Peter Nilsson  <hp@axis.com>
+
+	* builtins.c (get_builtin_sync_mode): Make unlimited
+	mode_for_size request.
+
 2005-10-15  Richard Henderson  <rth@redhat.com>
 
 	* gimplify.c (gimplify_var_or_parm_decl): Split out from ...
diff --git a/gcc/builtins.c b/gcc/builtins.c
index 2136900f0831..a39860574089 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -5399,7 +5399,9 @@ expand_builtin_fork_or_exec (tree fn, tree arglist, rtx target, int ignore)
 static inline enum machine_mode
 get_builtin_sync_mode (int fcode_diff)
 {
-  return mode_for_size (BITS_PER_UNIT << fcode_diff, MODE_INT, 1);
+  /* The size is not negotiable, so ask not to get BLKmode in return
+     if the target indicates that a smaller size would be better.  */
+  return mode_for_size (BITS_PER_UNIT << fcode_diff, MODE_INT, 0);
 }
 
 /* Expand the __sync_xxx_and_fetch and __sync_fetch_and_xxx intrinsics.