2004-08-17 Paolo Bonzini <bonzini@gnu.org>

	* Makefile.in: Regenerate.
	* configure: Regenerate.

	* Makefile.def (bootstrap-stage): Rename extra_*_flags to
	stage_*_flags.
	* Makefile.tpl (configure-[+module+], all-[+module+]): Exit
	for bootstrapped modules if toplevel bootstrap is going.
	(GCC bootstrap): Generate per-stage targets for all bootstrapped
	modules.  Adjust for changes in Makefile.def.  Enable several
	rules even in non-bootstrap mode, just to avoid peppering the
	template with unnecessary "@if/@endif gcc-bootstrap" pairs.
	(stage-[+prev+]-bubble): Remove.

	* Makefile.def (Dependencies): Depend on all-build-bison,
	all-build-flex, all-build-byacc, all-build-texinfo, rather
	than the host variations.
	* Makefile.tpl (BUILD_DIR_PREFIX): Remove.  Replace throughout
	with BUILD_SUBDIR.
	(BISON): Update for recent Bisons.
	(YACC): Fix typo.
	(cross): Depend on all-build.
	(all): Do not depend on all-build.
	(prebootstrap): Remove.
	(dep-kind): Accept separate prefixes for MODULE and ON variables.
	(Prebootstrap dependencies): Add them to the per-stage targets
	and to all-prebootstrap.
	* configure.in (build_configdirs): Always enable build_tools.
	(BUILD_DIR_PREFIX): Remove.

	* Makefile.def (gcc): Add target variable.
	(gdb, expect, guile, tk, tix): Replace with_x with extra_make_flags.
	* Makefile.tpl (Autogenerated `all-*' targets): Invoke $(TARGET-*)
	in the recursive `make', instead of hardwiring `all'.
	(Autogenerated TARGET-* variables): New.

gcc/ChangeLog:
2004-08-17  Paolo Bonzini  <bonzini@gnu.org>

	* configure.ac: Trust toplevel's notion of BISON/FLEX/MAKEINFO.
	No need to check if in a cross configuration.
	* configure: Regenerate.

	* calls.c (precompute_register_parameters):
	Inline preserve_subexpressions_p ().
	* expmed.c (expand_mult_const, emit_store_flag): Likewise.
	* optabs.c (expand_binop, expand_twoval_binop, prepare_cmp_insn):
	Likewise.
	* expr.c (get_subtarget): Likewise.
	* rtl.h (preserve_subexpressions_p): Remove.
	* stmt.c (preserve_subexpressions_p): Remove.

	* dojump.c (do_jump) <COND_EXPR, EQ_EXPR, NE_EXPR,
	TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR, COMPOUND_EXPR>:
	Abort on gimplified cases.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@86111 138bc75d-0d04-0410-961f-82ee72b054a4

11 files changed, 170 insertions, 350 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e7e7961811b..7f581a9f4b4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,22 @@
+2004-08-17  Paolo Bonzini  <bonzini@gnu.org>
+
+	* configure.ac: Trust toplevel's notion of BISON/FLEX/MAKEINFO.
+	No need to check if in a cross configuration.
+	* configure: Regenerate.
+
+	* calls.c (precompute_register_parameters):
+	Inline preserve_subexpressions_p ().
+	* expmed.c (expand_mult_const, emit_store_flag): Likewise.
+	* optabs.c (expand_binop, expand_twoval_binop, prepare_cmp_insn):
+	Likewise.
+	* expr.c (get_subtarget): Likewise.
+	* rtl.h (preserve_subexpressions_p): Remove.
+	* stmt.c (preserve_subexpressions_p): Remove.
+
+	* dojump.c (do_jump) <COND_EXPR, EQ_EXPR, NE_EXPR,
+	TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR, COMPOUND_EXPR>:
+	Abort on gimplified cases.
+
 2004-08-16  James E Wilson  <wilson@specifixinc.com>
 
 	* tree.h (VECTOR_FLOAT_TYPE_P): New.
@@ -115,6 +134,7 @@
 	Check for arificial variables, not is_gimple_tmp_var.
 	* tree-ssa-live.c (var_union): Likewise.
 
+>>>>>>> 2.4930
 2004-08-16  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* calls.c (load_register_parameters): Remove spurious FIXME token.
diff --git a/gcc/calls.c b/gcc/calls.c
index ef6da5df88f..3552737846a 100644
--- a/gcc/calls.c
+++ b/gcc/calls.c
@@ -691,7 +691,7 @@ precompute_register_parameters (int num_actuals, struct arg_data *args, int *reg
 	    && args[i].mode != BLKmode
 	    && rtx_cost (args[i].value, SET) > COSTS_N_INSNS (1)
 	    && ((SMALL_REGISTER_CLASSES && *reg_parm_seen)
-		|| preserve_subexpressions_p ()))
+		|| optimize))
 	  args[i].value = copy_to_mode_reg (args[i].mode, args[i].value);
       }
 }
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 0328df50d3d..f8a0b00157e 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -2666,17 +2666,18 @@ function_arg (CUMULATIVE_ARGS *cum,	/* current arg information */
       && GET_MODE_CLASS (TYPE_MODE (type)) != MODE_VECTOR_FLOAT)
     {
       enum machine_mode innermode = TYPE_MODE (TREE_TYPE (type));
-      mode = TREE_CODE (TREE_TYPE (type)) == REAL_TYPE
-	     ? MIN_MODE_VECTOR_FLOAT : MIN_MODE_VECTOR_INT;
+      enum machine_mode newmode
+	= TREE_CODE (TREE_TYPE (type)) == REAL_TYPE
+	  ? MIN_MODE_VECTOR_FLOAT : MIN_MODE_VECTOR_INT;
 
       /* Get the mode which has this inner mode and number of units.  */
-      while (GET_MODE_NUNITS (mode) != TYPE_VECTOR_SUBPARTS (type)
-	     || GET_MODE_INNER (mode) != innermode)
-	{
-	  mode = GET_MODE_WIDER_MODE (mode);
-	  if (mode == VOIDmode)
-	    abort ();
-	}
+      for (; newmode != VOIDmode; newmode = GET_MODE_WIDER_MODE (newmode))
+	if (GET_MODE_NUNITS (newmode) == TYPE_VECTOR_SUBPARTS (type)
+	    && GET_MODE_INNER (newmode) == innermode)
+	  {
+	    mode = newmode;
+	    break;
+	  }
     }
 
   /* Handle a hidden AL argument containing number of registers for varargs
diff --git a/gcc/configure b/gcc/configure
index 2fb43f83921..8cae074c979 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -1030,7 +1030,7 @@ esac
     else
       echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
     fi
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
@@ -2379,8 +2379,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2438,8 +2437,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2555,8 +2553,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2610,8 +2607,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2656,8 +2652,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -2701,8 +2696,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3108,8 +3102,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3180,8 +3173,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3240,8 +3232,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3307,8 +3298,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3378,8 +3368,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3449,8 +3438,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3520,8 +3508,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3592,8 +3579,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3665,8 +3651,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3739,8 +3724,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3790,8 +3774,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -3849,8 +3832,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4062,8 +4044,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4233,8 +4214,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -4297,8 +4277,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5215,16 +5194,11 @@ echo "${ECHO_T}no" >&6
 fi
 
 
-# Do we have a single-tree copy of texinfo?
-if test -f $srcdir/../texinfo/Makefile.in; then
-  MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
-  gcc_cv_prog_makeinfo_modern=yes
-  echo "$as_me:$LINENO: result: Using makeinfo from the unified source tree." >&5
-echo "${ECHO_T}Using makeinfo from the unified source tree." >&6
-else
-  # See if makeinfo has been installed and is modern enough
-  # that we can use it.
-  # Extract the first word of "makeinfo", so it can be a program name with args.
+MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
+
+# See if makeinfo has been installed and is modern enough
+# that we can use it.
+# Extract the first word of "makeinfo", so it can be a program name with args.
 set dummy makeinfo; ac_word=$2
 echo "$as_me:$LINENO: checking for $ac_word" >&5
 echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
@@ -5268,7 +5242,7 @@ if test "${gcc_cv_prog_makeinfo_modern+set}" = set; then
 else
     ac_prog_version=`$MAKEINFO --version 2>&1 |
                    sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'`
-  echo "configure:5271: version of makeinfo is $ac_prog_version" >&5
+  echo "configure:5245: version of makeinfo is $ac_prog_version" >&5
   case $ac_prog_version in
     '')     gcc_cv_prog_makeinfo_modern=no;;
     4.[2-9]*)
@@ -5283,9 +5257,8 @@ else
   gcc_cv_prog_makeinfo_modern=no
 fi
 
-fi
-
 if test $gcc_cv_prog_makeinfo_modern = no; then
+  MAKEINFO="$MISSING makeinfo"
   { echo "$as_me:$LINENO: WARNING:
 *** Makeinfo is missing or too old.
 *** Info documentation will not be built." >&5
@@ -5297,6 +5270,7 @@ else
   BUILD_INFO=info
 fi
 
+
 # Is pod2man recent enough to regenerate manpages?
 echo "$as_me:$LINENO: checking for recent Pod::Man" >&5
 echo $ECHO_N "checking for recent Pod::Man... $ECHO_C" >&6
@@ -5310,13 +5284,12 @@ echo "${ECHO_T}no" >&6
   GENERATED_MANPAGES=
 fi
 
+
 # How about lex?
-if test x${build} = x${host} && test -f $srcdir/../flex/skel.c \
-  && test -d ../flex ; then
-  FLEX='$(objdir)/../flex/flex'
-else
-  # Extract the first word of "flex", so it can be a program name with args.
-set dummy flex; ac_word=$2
+for ac_prog in flex
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
 echo "$as_me:$LINENO: checking for $ac_word" >&5
 echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
 if test "${ac_cv_prog_FLEX+set}" = set; then
@@ -5332,14 +5305,13 @@ do
   test -z "$as_dir" && as_dir=.
   for ac_exec_ext in '' $ac_executable_extensions; do
   if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_FLEX="flex"
+    ac_cv_prog_FLEX="$ac_prog"
     echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
 done
 
-  test -z "$ac_cv_prog_FLEX" && ac_cv_prog_FLEX="${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex"
 fi
 fi
 FLEX=$ac_cv_prog_FLEX
@@ -5351,16 +5323,16 @@ else
 echo "${ECHO_T}no" >&6
 fi
 
-fi
+  test -n "$FLEX" && break
+done
+test -n "$FLEX" || FLEX="$MISSING flex"
+
 
 # Bison?
-# The -L switch is so bison can find its skeleton file.
-if test x${build} = x${host} && test -f $srcdir/../bison/bison.simple \
-  && test -d ../bison ; then
-  BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
-else
-  # Extract the first word of "bison", so it can be a program name with args.
-set dummy bison; ac_word=$2
+for ac_prog in bison
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
 echo "$as_me:$LINENO: checking for $ac_word" >&5
 echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
 if test "${ac_cv_prog_BISON+set}" = set; then
@@ -5376,14 +5348,13 @@ do
   test -z "$as_dir" && as_dir=.
   for ac_exec_ext in '' $ac_executable_extensions; do
   if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
-    ac_cv_prog_BISON="bison"
+    ac_cv_prog_BISON="$ac_prog"
     echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
     break 2
   fi
 done
 done
 
-  test -z "$ac_cv_prog_BISON" && ac_cv_prog_BISON="${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison"
 fi
 fi
 BISON=$ac_cv_prog_BISON
@@ -5395,7 +5366,13 @@ else
 echo "${ECHO_T}no" >&6
 fi
 
-fi
+  test -n "$BISON" && break
+done
+test -n "$BISON" || BISON="$MISSING bison"
+
+
+# Binutils are not build modules, unlike bison/flex/makeinfo.  So we
+# check for build == host before using them.
 
 # NM
 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
@@ -5520,8 +5497,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5591,8 +5567,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5757,8 +5732,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5819,8 +5793,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -5890,8 +5863,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6165,8 +6137,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6239,8 +6210,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6281,8 +6251,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6484,8 +6453,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6559,8 +6527,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6614,8 +6581,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6693,8 +6659,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6748,8 +6713,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6817,8 +6781,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -6948,8 +6911,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7070,8 +7032,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7422,8 +7383,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7540,8 +7500,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7653,8 +7612,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -7812,8 +7770,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8182,8 +8139,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8233,8 +8189,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8309,8 +8264,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8384,8 +8338,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8487,8 +8440,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8573,8 +8525,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8643,8 +8594,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8713,8 +8663,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8797,8 +8746,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8874,8 +8822,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -8941,8 +8888,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9078,8 +9024,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9162,8 +9107,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9453,8 +9397,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9723,8 +9666,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -9778,8 +9720,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-	 { ac_try='test -z "$ac_c_werror_flag"
-			 || test ! -s conftest.err'
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -13467,11 +13408,6 @@ esac
 
 
 
-  if test x"$ac_file" != x-; then
-    { echo "$as_me:$LINENO: creating $ac_file" >&5
-echo "$as_me: creating $ac_file" >&6;}
-    rm -f "$ac_file"
-  fi
   # Let's still pretend it is `configure' which instantiates (i.e., don't
   # use $as_me), people would be surprised to read:
   #    /* config.h.  Generated by config.status.  */
@@ -13510,6 +13446,12 @@ echo "$as_me: error: cannot find input file: $f" >&2;}
 	 fi;;
       esac
     done` || { (exit 1); exit 1; }
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
   sed "$ac_vpsub
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 5e018924312..96d8e04cd70 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -756,56 +756,45 @@ gcc_AC_PROG_CMP_IGNORE_INITIAL
 # See if we have the mktemp command.
 AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no)
 
-# Do we have a single-tree copy of texinfo?
-if test -f $srcdir/../texinfo/Makefile.in; then
-  MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
-  gcc_cv_prog_makeinfo_modern=yes
-  AC_MSG_RESULT([Using makeinfo from the unified source tree.])
-else
-  # See if makeinfo has been installed and is modern enough
-  # that we can use it.
-  gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
+MISSING="${CONFIG_SHELL-/bin/sh} $srcdir/../missing"
+
+# See if makeinfo has been installed and is modern enough
+# that we can use it.
+gcc_AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
   [GNU texinfo.* \([0-9][0-9.]*\)],
   [4.[2-9]*])
-fi
-
 if test $gcc_cv_prog_makeinfo_modern = no; then
+  MAKEINFO="$MISSING makeinfo"
   AC_MSG_WARN([
 *** Makeinfo is missing or too old.
 *** Info documentation will not be built.])
   BUILD_INFO=
 else
-  BUILD_INFO=info		AC_SUBST(BUILD_INFO)
+  BUILD_INFO=info
 fi
+AC_SUBST(BUILD_INFO)
 
 # Is pod2man recent enough to regenerate manpages?
 AC_MSG_CHECKING([for recent Pod::Man])
 if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then
   AC_MSG_RESULT(yes)
-  GENERATED_MANPAGES=generated-manpages		AC_SUBST(GENERATED_MANPAGES)
+  GENERATED_MANPAGES=generated-manpages
 else
   AC_MSG_RESULT(no)
   GENERATED_MANPAGES=
 fi
+AC_SUBST(GENERATED_MANPAGES)
 
 # How about lex?
 dnl Don't use AC_PROG_LEX; we insist on flex.
 dnl LEXLIB is not useful in gcc.
-if test x${build} = x${host} && test -f $srcdir/../flex/skel.c \
-  && test -d ../flex ; then
-  FLEX='$(objdir)/../flex/flex'
-else
-  AC_CHECK_PROG(FLEX, flex, flex, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing flex)
-fi
+AC_CHECK_PROGS([FLEX], flex, [$MISSING flex])
 
 # Bison?
-# The -L switch is so bison can find its skeleton file.
-if test x${build} = x${host} && test -f $srcdir/../bison/bison.simple \
-  && test -d ../bison ; then
-  BISON='$(objdir)/../bison/bison -L $(srcdir)/../bison/'
-else
-  AC_CHECK_PROG(BISON, bison, bison, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing bison)
-fi
+AC_CHECK_PROGS([BISON], bison, [$MISSING bison])
+
+# Binutils are not build modules, unlike bison/flex/makeinfo.  So we
+# check for build == host before using them.
 
 # NM
 if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \
diff --git a/gcc/dojump.c b/gcc/dojump.c
index 363d815251e..3877f79de73 100644
--- a/gcc/dojump.c
+++ b/gcc/dojump.c
@@ -208,19 +208,6 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
       do_jump (TREE_OPERAND (exp, 0), if_false_label, if_true_label);
       break;
 
-#if 0
-      /* This is never less insns than evaluating the PLUS_EXPR followed by
-         a test and can be longer if the test is eliminated.  */
-    case PLUS_EXPR:
-      /* Reduce to minus.  */
-      exp = build2 (MINUS_EXPR, TREE_TYPE (exp),
-		    TREE_OPERAND (exp, 0),
-		    fold (build1 (NEGATE_EXPR,
-				  TREE_TYPE (TREE_OPERAND (exp, 1)),
-				  TREE_OPERAND (exp, 1))));
-      /* Process as MINUS.  */
-#endif
-
     case MINUS_EXPR:
       /* Nonzero iff operands of minus differ.  */
       do_compare_and_jump (build2 (NE_EXPR, TREE_TYPE (exp),
@@ -281,28 +268,11 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
       break;
 
     case TRUTH_ANDIF_EXPR:
-      if (if_false_label == 0)
-        if_false_label = drop_through_label = gen_label_rtx ();
-      do_jump (TREE_OPERAND (exp, 0), if_false_label, NULL_RTX);
-      do_jump (TREE_OPERAND (exp, 1), if_false_label, if_true_label);
-      break;
-
     case TRUTH_ORIF_EXPR:
-      if (if_true_label == 0)
-        if_true_label = drop_through_label = gen_label_rtx ();
-      do_jump (TREE_OPERAND (exp, 0), NULL_RTX, if_true_label);
-      do_jump (TREE_OPERAND (exp, 1), if_false_label, if_true_label);
-      break;
-
     case COMPOUND_EXPR:
-      push_temp_slots ();
-      expand_expr (TREE_OPERAND (exp, 0), const0_rtx, VOIDmode, 0);
-      preserve_temp_slots (NULL_RTX);
-      free_temp_slots ();
-      pop_temp_slots ();
-      do_pending_stack_adjust ();
-      do_jump (TREE_OPERAND (exp, 1), if_false_label, if_true_label);
-      break;
+    case COND_EXPR:
+      /* Lowered by gimplify.c.  */
+      abort ();
 
     case COMPONENT_REF:
     case BIT_FIELD_REF:
@@ -334,70 +304,15 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
         goto normal;
       }
 
-    case COND_EXPR:
-      /* Do (a ? 1 : 0) and (a ? 0 : 1) as special cases.  */
-      if (integer_onep (TREE_OPERAND (exp, 1))
-          && integer_zerop (TREE_OPERAND (exp, 2)))
-        do_jump (TREE_OPERAND (exp, 0), if_false_label, if_true_label);
-
-      else if (integer_zerop (TREE_OPERAND (exp, 1))
-               && integer_onep (TREE_OPERAND (exp, 2)))
-        do_jump (TREE_OPERAND (exp, 0), if_true_label, if_false_label);
-
-      else
-      {
-        rtx label1 = gen_label_rtx ();
-        drop_through_label = gen_label_rtx ();
-
-        do_jump (TREE_OPERAND (exp, 0), label1, NULL_RTX);
-
-        /* Now the THEN-expression.  */
-        do_jump (TREE_OPERAND (exp, 1),
-                 if_false_label ? if_false_label : drop_through_label,
-                 if_true_label ? if_true_label : drop_through_label);
-        /* In case the do_jump just above never jumps.  */
-        do_pending_stack_adjust ();
-        emit_label (label1);
-
-        /* Now the ELSE-expression.  */
-        do_jump (TREE_OPERAND (exp, 2),
-           if_false_label ? if_false_label : drop_through_label,
-           if_true_label ? if_true_label : drop_through_label);
-      }
-      break;
-
     case EQ_EXPR:
       {
         tree inner_type = TREE_TYPE (TREE_OPERAND (exp, 0));
 
         if (GET_MODE_CLASS (TYPE_MODE (inner_type)) == MODE_COMPLEX_FLOAT
             || GET_MODE_CLASS (TYPE_MODE (inner_type)) == MODE_COMPLEX_INT)
-          {
-            tree exp0 = save_expr (TREE_OPERAND (exp, 0));
-            tree exp1 = save_expr (TREE_OPERAND (exp, 1));
-            do_jump
-              (fold
-               (build2 (TRUTH_ANDIF_EXPR, TREE_TYPE (exp),
-                 fold (build2 (EQ_EXPR, TREE_TYPE (exp),
-                  fold (build1 (REALPART_EXPR,
-                    TREE_TYPE (inner_type),
-                    exp0)),
-                  fold (build1 (REALPART_EXPR,
-                    TREE_TYPE (inner_type),
-                    exp1)))),
-                 fold (build2 (EQ_EXPR, TREE_TYPE (exp),
-                  fold (build1 (IMAGPART_EXPR,
-                    TREE_TYPE (inner_type),
-                    exp0)),
-                  fold (build1 (IMAGPART_EXPR,
-                    TREE_TYPE (inner_type),
-                    exp1)))))),
-               if_false_label, if_true_label);
-          }
-
+	  abort ();
         else if (integer_zerop (TREE_OPERAND (exp, 1)))
           do_jump (TREE_OPERAND (exp, 0), if_true_label, if_false_label);
-
         else if (GET_MODE_CLASS (TYPE_MODE (inner_type)) == MODE_INT
                  && !can_compare_p (EQ, TYPE_MODE (inner_type), ccp_jump))
           do_jump_by_parts_equality (exp, if_false_label, if_true_label);
@@ -412,32 +327,9 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
 
         if (GET_MODE_CLASS (TYPE_MODE (inner_type)) == MODE_COMPLEX_FLOAT
             || GET_MODE_CLASS (TYPE_MODE (inner_type)) == MODE_COMPLEX_INT)
-          {
-            tree exp0 = save_expr (TREE_OPERAND (exp, 0));
-            tree exp1 = save_expr (TREE_OPERAND (exp, 1));
-            do_jump
-              (fold
-               (build2 (TRUTH_ORIF_EXPR, TREE_TYPE (exp),
-                 fold (build2 (NE_EXPR, TREE_TYPE (exp),
-                  fold (build1 (REALPART_EXPR,
-                    TREE_TYPE (inner_type),
-                    exp0)),
-                  fold (build1 (REALPART_EXPR,
-                    TREE_TYPE (inner_type),
-                    exp1)))),
-                 fold (build2 (NE_EXPR, TREE_TYPE (exp),
-                    fold (build1 (IMAGPART_EXPR,
-                      TREE_TYPE (inner_type),
-                      exp0)),
-                    fold (build1 (IMAGPART_EXPR,
-                      TREE_TYPE (inner_type),
-                      exp1)))))),
-               if_false_label, if_true_label);
-          }
-
+	  abort ();
         else if (integer_zerop (TREE_OPERAND (exp, 1)))
           do_jump (TREE_OPERAND (exp, 0), if_false_label, if_true_label);
-
         else if (GET_MODE_CLASS (TYPE_MODE (inner_type)) == MODE_INT
            && !can_compare_p (NE, TYPE_MODE (inner_type), ccp_jump))
           do_jump_by_parts_equality (exp, if_true_label, if_false_label);
@@ -602,15 +494,6 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label)
     default:
     normal:
       temp = expand_expr (exp, NULL_RTX, VOIDmode, 0);
-#if 0
-      /* This is not needed any more and causes poor code since it causes
-         comparisons and tests from non-SI objects to have different code
-         sequences.  */
-      /* Copy to register to avoid generating bad insns by cse
-         from (set (mem ...) (arithop))  (set (cc0) (mem ...)).  */
-      if (!cse_not_expected && MEM_P (temp))
-        temp = copy_to_reg (temp);
-#endif
       do_pending_stack_adjust ();
 
       if (GET_CODE (temp) == CONST_INT
diff --git a/gcc/expmed.c b/gcc/expmed.c
index 75427e10a6e..b44ba65e28b 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -2547,13 +2547,12 @@ expand_mult_const (enum machine_mode mode, rtx op0, HOST_WIDE_INT val,
   for (opno = 1; opno < alg->ops; opno++)
     {
       int log = alg->log[opno];
-      int preserve = preserve_subexpressions_p ();
-      rtx shift_subtarget = preserve ? 0 : accum;
+      rtx shift_subtarget = optimize ? 0 : accum;
       rtx add_target
 	= (opno == alg->ops - 1 && target != 0 && variant != add_variant
-	   && ! preserve)
+	   && !optimize)
 	  ? target : 0;
-      rtx accum_target = preserve ? 0 : accum;
+      rtx accum_target = optimize ? 0 : accum;
 
       switch (alg->op[opno])
 	{
@@ -2615,8 +2614,8 @@ expand_mult_const (enum machine_mode mode, rtx op0, HOST_WIDE_INT val,
 			      build_int_cst (NULL_TREE, log, 0),
 			      NULL_RTX, 0);
 	  accum = force_operand (gen_rtx_MINUS (mode, tem, accum),
-				 (add_target ? add_target
-				  : preserve ? 0 : tem));
+				 (add_target
+				  ? add_target : (optimize ? 0 : tem)));
 	  val_so_far = (val_so_far << log) - val_so_far;
 	  break;
 
@@ -4829,8 +4828,7 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1,
       compare_mode = insn_data[(int) icode].operand[0].mode;
       subtarget = target;
       pred = insn_data[(int) icode].operand[0].predicate;
-      if (preserve_subexpressions_p ()
-	  || ! (*pred) (subtarget, compare_mode))
+      if (optimize || ! (*pred) (subtarget, compare_mode))
 	subtarget = gen_reg_rtx (compare_mode);
 
       pattern = GEN_FCN (icode) (subtarget);
@@ -4863,7 +4861,7 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1,
 	  /* If we want to keep subexpressions around, don't reuse our
 	     last target.  */
 
-	  if (preserve_subexpressions_p ())
+	  if (optimize)
 	    subtarget = 0;
 
 	  /* Now normalize to the proper value in COMPARE_MODE.  Sometimes
@@ -4908,10 +4906,10 @@ emit_store_flag (rtx target, enum rtx_code code, rtx op0, rtx op1,
 
   delete_insns_since (last);
 
-  /* If expensive optimizations, use different pseudo registers for each
-     insn, instead of reusing the same pseudo.  This leads to better CSE,
-     but slows down the compiler, since there are more pseudos */
-  subtarget = (!flag_expensive_optimizations
+  /* If optimizing, use different pseudo registers for each insn, instead
+     of reusing the same pseudo.  This leads to better CSE, but slows
+     down the compiler, since there are more pseudos */
+  subtarget = (!optimize
 	       && (target_mode == mode)) ? target : NULL_RTX;
 
   /* If we reached here, we can't do this with a scc insn.  However, there
diff --git a/gcc/expr.c b/gcc/expr.c
index e6052633d34..f34285be7d5 100644
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -3445,16 +3445,14 @@ emit_push_insn (rtx x, enum machine_mode mode, tree type, rtx size,
 static rtx
 get_subtarget (rtx x)
 {
-  return ((x == 0
+  return (optimize
+          || x == 0
 	   /* Only registers can be subtargets.  */
 	   || !REG_P (x)
 	   /* If the register is readonly, it can't be set more than once.  */
 	   || RTX_UNCHANGING_P (x)
 	   /* Don't use hard regs to avoid extending their life.  */
 	   || REGNO (x) < FIRST_PSEUDO_REGISTER
-	   /* Avoid subtargets inside loops,
-	      since they hide some invariant expressions.  */
-	   || preserve_subexpressions_p ())
 	  ? 0 : x);
 }
 
diff --git a/gcc/optabs.c b/gcc/optabs.c
index ab826769fad..42f714b3d82 100644
--- a/gcc/optabs.c
+++ b/gcc/optabs.c
@@ -782,13 +782,13 @@ expand_binop (enum machine_mode mode, optab binoptab, rtx op0, rtx op1,
       binoptab = add_optab;
     }
 
-  /* If we are inside an appropriately-short loop and one operand is an
-     expensive constant, force it into a register.  */
-  if (CONSTANT_P (op0) && preserve_subexpressions_p ()
+  /* If we are inside an appropriately-short loop and we are optimizing,
+     force expensive constants into a register.  */
+  if (CONSTANT_P (op0) && optimize
       && rtx_cost (op0, binoptab->code) > COSTS_N_INSNS (1))
     op0 = force_reg (mode, op0);
 
-  if (CONSTANT_P (op1) && preserve_subexpressions_p ()
+  if (CONSTANT_P (op1) && optimize
       && ! shift_op && rtx_cost (op1, binoptab->code) > COSTS_N_INSNS (1))
     op1 = force_reg (mode, op1);
 
@@ -2348,13 +2348,13 @@ expand_twoval_binop (optab binoptab, rtx op0, rtx op1, rtx targ0, rtx targ1,
       op1 = force_not_mem (op1);
     }
 
-  /* If we are inside an appropriately-short loop and one operand is an
-     expensive constant, force it into a register.  */
-  if (CONSTANT_P (op0) && preserve_subexpressions_p ()
+  /* If we are inside an appropriately-short loop and we are optimizing,
+     force expensive constants into a register.  */
+  if (CONSTANT_P (op0) && optimize
       && rtx_cost (op0, binoptab->code) > COSTS_N_INSNS (1))
     op0 = force_reg (mode, op0);
 
-  if (CONSTANT_P (op1) && preserve_subexpressions_p ()
+  if (CONSTANT_P (op1) && optimize
       && rtx_cost (op1, binoptab->code) > COSTS_N_INSNS (1))
     op1 = force_reg (mode, op1);
 
@@ -3750,13 +3750,13 @@ prepare_cmp_insn (rtx *px, rtx *py, enum rtx_code *pcomparison, rtx size,
 	}
     }
 
-  /* If we are inside an appropriately-short loop and one operand is an
-     expensive constant, force it into a register.  */
-  if (CONSTANT_P (x) && preserve_subexpressions_p ()
+  /* If we are inside an appropriately-short loop and we are optimizing,
+     force expensive constants into a register.  */
+  if (CONSTANT_P (x) && optimize
       && rtx_cost (x, COMPARE) > COSTS_N_INSNS (1))
     x = force_reg (mode, x);
 
-  if (CONSTANT_P (y) && preserve_subexpressions_p ()
+  if (CONSTANT_P (y) && optimize
       && rtx_cost (y, COMPARE) > COSTS_N_INSNS (1))
     y = force_reg (mode, y);
 
diff --git a/gcc/rtl.h b/gcc/rtl.h
index fdff2f65b36..8c01776b287 100644
--- a/gcc/rtl.h
+++ b/gcc/rtl.h
@@ -2239,7 +2239,6 @@ extern void update_temp_slot_address (rtx, rtx);
 extern void expand_null_return (void);
 extern void expand_naked_return (void);
 extern void emit_jump (rtx);
-extern int preserve_subexpressions_p (void);
 
 /* In expr.c */
 extern rtx move_by_pieces (rtx, rtx, unsigned HOST_WIDE_INT,
diff --git a/gcc/stmt.c b/gcc/stmt.c
index b939a9e5775..760be9f3516 100644
--- a/gcc/stmt.c
+++ b/gcc/stmt.c
@@ -1491,16 +1491,6 @@ warn_if_unused_value (tree exp, location_t locus)
       return 1;
     }
 }
-
-/* Return nonzero if we should preserve sub-expressions as separate
-   pseudos.  We never do so if we aren't optimizing.  We always do so
-   if -fexpensive-optimizations.  */
-
-int
-preserve_subexpressions_p (void)
-{
-  return optimize && (cfun || flag_expensive_optimizations);
-}
 
 
 /* Generate RTL to return from the current function, with no value.