From 649ce9dd7fc1945bf6588a5b8ae32c45b70114bb Mon Sep 17 00:00:00 2001
From: theraven <theraven@72102866-910b-0410-8b05-ffd578937521>
Date: Fri, 22 Apr 2011 11:38:16 +0000
Subject: [PATCH] Updated release announcement.

Made the LLVM optimisations build by default (if LLVM is installed).
---
 ANNOUNCE      |  9 +++++++++
 GNUmakefile   |  9 +++++++++
 build_opts.sh | 18 ++++++++++++++++++
 3 files changed, 36 insertions(+)
 create mode 100644 build_opts.sh

diff --git a/ANNOUNCE b/ANNOUNCE
index 1fb14c2..13a8b3e 100644
--- a/ANNOUNCE
+++ b/ANNOUNCE
@@ -26,6 +26,15 @@ release include:
   profile trades some CPU time for memory usage, so don't use it for CPU-bound
   tasks.
 
+- The class lookup cache optimisation (LLVM) now caches lookups irrespective of
+  the ABI.  It will insert direct references to the class structures if
+  possible (i.e. if the symbol is visible).  If not, then it will cache the
+  result of objc_class_lookup().  The cache is shared across the module (the
+  library, if run as a link-time optimisation), so the lookup only needs to be
+  run once.  This eliminates the need for explicit class lookup caching in the
+  source code (when using LLVM-based compilers, such as Clang, LanguageKit, or
+  DragonEgg).
+
 You may obtain the code for this release from subversion at the following
 subversion branch:
 
diff --git a/GNUmakefile b/GNUmakefile
index 6cd525c..77680b5 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -118,3 +118,12 @@ endif
 
 include $(GNUSTEP_MAKEFILES)/aggregate.make
 include $(GNUSTEP_MAKEFILES)/library.make
+
+all::
+	sh build_opts.sh $(MAKE) all
+
+install::
+	sh build_opts.sh $(MAKE) install
+
+clean::
+	sh build_opts.sh $(MAKE) clean
diff --git a/build_opts.sh b/build_opts.sh
new file mode 100644
index 0000000..274285e
--- /dev/null
+++ b/build_opts.sh
@@ -0,0 +1,18 @@
+#!/bin/sh
+LLVM_PATH=`llvm-config --src-root`
+LIBOBJC_PATH=`pwd`
+if [ x$LLVM_PATH != x ] ; then
+	cd $LLVM_PATH
+	cd lib/Transforms
+	if [ ! -d GNURuntime ] ; then
+		mkdir GNURuntime
+	fi
+	cd GNURuntime
+	for I in `ls $LIBOBJC_PATH/opts/` ; do
+		if [ ! $I -nt $LIBOBJC_PATH/opts/$I ] ; then
+			cp $LIBOBJC_PATH/opts/$I .
+		fi
+	done
+	$1 $2
+	cd ..
+fi