diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 01e11994293..dd180c89672 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -30,6 +30,11 @@ then
 	fi
 fi
 
+if test -d ${srcdir}/projects/reopt
+then
+  AC_CONFIG_SUBDIRS(projects/reopt)
+fi
+
 dnl Configure a header file
 AC_CONFIG_HEADERS(include/Config/config.h)
 AC_CONFIG_MAKEFILE(Makefile)
diff --git a/configure b/configure
index ad42bb6f33f..b88fe2db5ec 100755
--- a/configure
+++ b/configure
@@ -426,6 +426,7 @@ PACKAGE_VERSION='[1.0]'
 PACKAGE_STRING='[LLVM] [1.0]'
 PACKAGE_BUGREPORT='llvmbugs@cs.uiuc.edu'
 
+ac_subdirs_all="$ac_subdirs_all projects/reopt"
 # Factoring default headers for most tests.
 ac_includes_default="\
 #include <stdio.h>
@@ -464,7 +465,7 @@ ac_includes_default="\
 #endif"
 
 ac_unique_file=""Makefile.config.in""
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os OS LLVMGCCDIR ARCH CXX CXXFLAGS LDFLAGS CPPFLAGS ac_ct_CXX EXEEXT OBJEXT CC CFLAGS ac_ct_CC CPP ifGNUmake LEX LEXLIB LEX_OUTPUT_ROOT YACC EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL RPWD SED RM MKDIR DATE MV DOT ETAGS PURIFY PYTHON QMTEST ALLOCA LIBOBJS MMAP_FILE ENABLE_PURIFY ENABLE_OPTIMIZED USE_SPEC UPB DISABLE_LLC_DIFFS JIT SPEC_ROOT BCR PAPIDIR LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS subdirs INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os OS LLVMGCCDIR ARCH CXX CXXFLAGS LDFLAGS CPPFLAGS ac_ct_CXX EXEEXT OBJEXT CC CFLAGS ac_ct_CC CPP ifGNUmake LEX LEXLIB LEX_OUTPUT_ROOT YACC EGREP LN_S ECHO AR ac_ct_AR RANLIB ac_ct_RANLIB STRIP ac_ct_STRIP CXXCPP F77 FFLAGS ac_ct_F77 LIBTOOL RPWD SED RM MKDIR DATE MV DOT ETAGS PURIFY PYTHON QMTEST ALLOCA LIBOBJS MMAP_FILE ENABLE_PURIFY ENABLE_OPTIMIZED USE_SPEC UPB DISABLE_LLC_DIFFS JIT SPEC_ROOT BCR PAPIDIR LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -1517,6 +1518,14 @@ then
 echo "$as_me: error: Already configured in ${srcdir}" >&2;}
    { (exit 1); exit 1; }; }
 	fi
+fi
+
+if test -d ${srcdir}/projects/reopt
+then
+
+
+subdirs="$subdirs projects/reopt"
+
 fi
 
           ac_config_headers="$ac_config_headers include/Config/config.h"
@@ -4411,7 +4420,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 4414 "configure"' > conftest.$ac_ext
+  echo '#line 4423 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -5252,7 +5261,7 @@ fi
 
 
 # Provide some information about the compiler.
-echo "$as_me:5255:" \
+echo "$as_me:5264:" \
      "checking for Fortran 77 compiler version" >&5
 ac_compiler=`set X $ac_compile; echo $2`
 { (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
@@ -6261,11 +6270,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6264: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6273: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:6268: \$? = $ac_status" >&5
+   echo "$as_me:6277: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -6493,11 +6502,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6496: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6505: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:6500: \$? = $ac_status" >&5
+   echo "$as_me:6509: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -6560,11 +6569,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:6563: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:6572: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:6567: \$? = $ac_status" >&5
+   echo "$as_me:6576: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -8572,7 +8581,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 8575 "configure"
+#line 8584 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -8670,7 +8679,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 8673 "configure"
+#line 8682 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10806,11 +10815,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:10809: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:10818: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:10813: \$? = $ac_status" >&5
+   echo "$as_me:10822: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -10873,11 +10882,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:10876: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:10885: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:10880: \$? = $ac_status" >&5
+   echo "$as_me:10889: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -12116,7 +12125,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 12119 "configure"
+#line 12128 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12214,7 +12223,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 12217 "configure"
+#line 12226 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -13036,11 +13045,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13039: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13048: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:13043: \$? = $ac_status" >&5
+   echo "$as_me:13052: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -13103,11 +13112,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13106: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13115: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13110: \$? = $ac_status" >&5
+   echo "$as_me:13119: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -15047,11 +15056,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15050: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15059: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:15054: \$? = $ac_status" >&5
+   echo "$as_me:15063: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -15279,11 +15288,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15282: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15291: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:15286: \$? = $ac_status" >&5
+   echo "$as_me:15295: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings
@@ -15346,11 +15355,11 @@ else
    -e 's:.*FLAGS}? :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:15349: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:15358: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:15353: \$? = $ac_status" >&5
+   echo "$as_me:15362: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -17358,7 +17367,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17361 "configure"
+#line 17370 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -17456,7 +17465,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 17459 "configure"
+#line 17468 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -23843,6 +23852,7 @@ s,@ECHO_C@,$ECHO_C,;t t
 s,@ECHO_N@,$ECHO_N,;t t
 s,@ECHO_T@,$ECHO_T,;t t
 s,@LIBS@,$LIBS,;t t
+s,@subdirs@,$subdirs,;t t
 s,@INSTALL_PROGRAM@,$INSTALL_PROGRAM,;t t
 s,@INSTALL_SCRIPT@,$INSTALL_SCRIPT,;t t
 s,@INSTALL_DATA@,$INSTALL_DATA,;t t
@@ -24612,3 +24622,147 @@ if test "$no_create" != yes; then
   $ac_cs_success || { (exit 1); exit 1; }
 fi
 
+#
+# CONFIG_SUBDIRS section.
+#
+if test "$no_recursion" != yes; then
+
+  # Remove --cache-file and --srcdir arguments so they do not pile up.
+  ac_sub_configure_args=
+  ac_prev=
+  for ac_arg in $ac_configure_args; do
+    if test -n "$ac_prev"; then
+      ac_prev=
+      continue
+    fi
+    case $ac_arg in
+    -cache-file | --cache-file | --cache-fil | --cache-fi \
+    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+      ac_prev=cache_file ;;
+    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \
+    | --c=*)
+      ;;
+    --config-cache | -C)
+      ;;
+    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+      ac_prev=srcdir ;;
+    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+      ;;
+    -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+      ac_prev=prefix ;;
+    -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+      ;;
+    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    esac
+  done
+
+  # Always prepend --prefix to ensure using the same prefix
+  # in subdir configurations.
+  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+
+  ac_popdir=`pwd`
+  for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
+
+    # Do not complain, so a configure script can configure whichever
+    # parts of a large source tree are present.
+    test -d $srcdir/$ac_dir || continue
+
+    { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
+echo "$as_me: configuring in $ac_dir" >&6;}
+    { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+         X"$as_dir" : 'X\(//\)[^/]' \| \
+         X"$as_dir" : 'X\(//\)$' \| \
+         X"$as_dir" : 'X\(/\)' \| \
+         .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+    ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+# Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
+# absolute.
+ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
+ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
+ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
+
+
+    cd $ac_dir
+
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f $ac_srcdir/configure.gnu; then
+      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
+    elif test -f $ac_srcdir/configure; then
+      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
+    elif test -f $ac_srcdir/configure.in; then
+      ac_sub_configure=$ac_configure
+    else
+      { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
+echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
+      ac_sub_configure=
+    fi
+
+    # The recursion is here.
+    if test -n "$ac_sub_configure"; then
+      # Make the cache file name correct relative to the subdirectory.
+      case $cache_file in
+      [\\/]* | ?:[\\/]* ) ac_sub_cache_file=$cache_file ;;
+      *) # Relative path.
+        ac_sub_cache_file=$ac_top_builddir$cache_file ;;
+      esac
+
+      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      # The eval makes quoting arguments work.
+      eval $ac_sub_configure $ac_sub_configure_args \
+           --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+        { { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
+echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
+   { (exit 1); exit 1; }; }
+    fi
+
+    cd $ac_popdir
+  done
+fi
+