2008-05-30 Vladimir Makarov <vmakarov@redhat.com>

	Merge 132243:136204 from trunk
	* ira.c (setup_eliminable_regset): Use cfun.
	(ira): Set up DF_VERIFY_SCHEDULED.
	
	* ira-lives.c (process_bb_node_lives): Use cfun.
	
	* ira_build (ira_build): Use crtl.
	
	* local-alloc.c (update_equiv_regs): Rescan equivalent insn.

	* final (rest_of_handle_final): Use crtl.
	
	* caller-save.c (save_call_clobbered_regs): Initialize save.



git-svn-id: https://gcc.gnu.org/svn/gcc/branches/ira@136224 138bc75d-0d04-0410-961f-82ee72b054a4

3 files changed, 123 insertions, 9 deletions

diff --git a/config/ChangeLog b/config/ChangeLog
index 9152d8acdab..92df0eb25a2 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -1,3 +1,29 @@
+2008-05-12  Samuel Tardieu  <sam@rfc1149.net>
+	    Paolo Bonzini  <bonzini@gnu.org>
+
+	PR ada/36001
+	* acx.m4: Add optional parameter to ACX_PROG_GNAT.
+
+2008-04-23  Paolo Bonzini  <bonzini@gnu.org>
+
+	* override.m4: Apply _AC_ARG_VALIDATE fix to all versions
+	but 2.62.
+
+2008-04-18  Paolo Bonzini  <bonzini@gnu.org>
+
+	PR bootstrap/35457
+
+	* confsubdir.m4: Rename to...
+	* override.m4: ... this.  Make sure aclocal always picks it.
+	Add more lenient precious variable check, backported from
+	autoconf trunk.
+
+2008-04-04  Nick Clifton  <nickc@redhat.com>
+
+	PR binutils/4334
+	* acx.m4 (ACX_CHECK_CYGWIN_CAT_WORKS): New macro to check that
+	cygwin builds are not running in textmode.
+
 2008-03-27  Paolo Bonzini  <bonzini@gnu.org>
 
 	* extensions.m4: New.
diff --git a/config/acx.m4 b/config/acx.m4
index c8a32c9f9ed..cea08b7204f 100644
--- a/config/acx.m4
+++ b/config/acx.m4
@@ -357,7 +357,8 @@ ac_c_preproc_warn_flag=yes])# AC_PROG_CPP_WERROR
 
 # Test for GNAT.
 # We require the gnatbind program, and a compiler driver that
-# understands Ada.  We use the user's CC setting, already found.
+# understands Ada.  We use the user's CC setting, already found,
+# and possibly add $1 to the command-line parameters.
 #
 # Sets the shell variable have_gnat to yes or no as appropriate, and
 # substitutes GNATBIND and GNATMAKE.
@@ -380,7 +381,7 @@ acx_cv_cc_gcc_supports_ada=no
 # Other compilers, like HP Tru64 UNIX cc, exit successfully when
 # given a .adb file, but produce no object file.  So we must check
 # if an object file was really produced to guard against this.
-errors=`(${CC} -c conftest.adb) 2>&1 || echo failure`
+errors=`(${CC} $1[]m4_ifval([$1], [ ])-c conftest.adb) 2>&1 || echo failure`
 if test x"$errors" = x && test -f conftest.$ac_objext; then
   acx_cv_cc_gcc_supports_ada=yes
 fi
@@ -595,3 +596,26 @@ AC_DEFUN([ACX_BUGURL],[
   AC_SUBST(REPORT_BUGS_TO)
   AC_SUBST(REPORT_BUGS_TEXI)
 ])
+
+dnl ####
+dnl # ACX_CHECK_CYGWIN_CAT_WORKS
+dnl # On Cygwin hosts, check that the cat command ignores 
+dnl # carriage returns as otherwise builds will not work.
+dnl # See binutils PR 4334 for more details.
+AC_DEFUN([ACX_CHECK_CYGWIN_CAT_WORKS],[
+AC_MSG_CHECKING([to see if cat works as expected])
+echo a >cygwin-cat-check
+if test `cat cygwin-cat-check` == a ; then
+  rm cygwin-cat-check
+  AC_MSG_RESULT(yes)
+else
+  rm cygwin-cat-check
+  AC_MSG_RESULT(no)
+  AC_MSG_ERROR([The cat command does not ignore carriage return characters.
+  Please either mount the build directory in binary mode or run the following
+  commands before running any configure script:
+set -o igncr
+export SHELLOPTS 
+  ])
+fi
+])
diff --git a/config/confsubdir.m4 b/config/override.m4
index 4e1e8c4641c..592f64139b6 100644
--- a/config/confsubdir.m4
+++ b/config/override.m4
@@ -1,6 +1,7 @@
-dnl Fix Autoconf-2.59 AC_CONFIG_SUBDIRS whitespace mangling,
-dnl by overriding the broken internal Autoconf macro with a
-dnl backport of the 2.60 fix.
+dnl Fix Autoconf-2.59 bugs: by overriding broken internal
+dnl Autoconf macros with backports of the 2.60+ fix.
+dnl - AC_CONFIG_SUBDIRS whitespace mangling,
+dnl - more lenient precious variable checks
 dnl
 dnl This file should be a no-op for Autoconf versions != 2.59.
 dnl It can be removed once the complete tree has moved to a
@@ -16,12 +17,13 @@ dnl Redefine AC_CONFIG_SUBDIRS so aclocal pulls in this file
 dnl when needed.
 
 ifdef([m4_PACKAGE_VERSION],
-[ifelse(m4_PACKAGE_VERSION, [2.59], [
+[dnl AC_DEFUN a commonly used macro so this file is picked up.
+m4_copy([AC_PREREQ], [_AC_PREREQ])
+AC_DEFUN([AC_PREREQ], [frob])
+m4_copy([_AC_PREREQ], [AC_PREREQ])
 
-dnl Redefine AC_CONFIG_SUBDIRS so this file is picked up if needed.
-AC_DEFUN([AC_CONFIG_SUBDIRS], defn([AC_CONFIG_SUBDIRS]))
+ifelse(m4_PACKAGE_VERSION, [2.59], [
 
-dnl Override the broken macro.
 # _AC_OUTPUT_SUBDIRS
 # ------------------
 # This is a subroutine of AC_OUTPUT, but it does not go into
@@ -124,4 +126,66 @@ if test "$no_recursion" != yes; then
   done
 fi
 ])# _AC_OUTPUT_SUBDIRS
+])
+
+ifelse(m4_PACKAGE_VERSION, [2.62],, [
+
+# _AC_ARG_VAR_VALIDATE
+# --------------------
+# The code is the same as autoconf 2.59, but with a more lenient check
+# on precious variables that has been added in autoconf 2.62.
+m4_define([_AC_ARG_VAR_VALIDATE],
+[# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in `(set) 2>&1 |
+	       sed -n 's/^ac_env_\([[a-zA-Z_0-9]]*\)_set=.*/\1/p'`; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
+  eval ac_new_val="\$ac_env_${ac_var}_value"
+  case $ac_old_set,$ac_new_set in
+    set,)
+      AS_MESSAGE([error: `$ac_var' was set to `$ac_old_val' in the previous run], 2)
+      ac_cache_corrupted=: ;;
+    ,set)
+      AS_MESSAGE([error: `$ac_var' was not set in the previous run], 2)
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+        # differences in whitespace do not lead to failure.
+        ac_old_val_w=`echo x $ac_old_val`
+        ac_new_val_w=`echo x $ac_new_val`
+        if test "$ac_old_val_w" != "$ac_new_val_w"; then
+          AS_MESSAGE([error: `$ac_var' has changed since the previous run:], 2)
+          ac_cache_corrupted=:
+        else
+          AS_MESSAGE([warning: ignoring whitespace changes in `$ac_var' since the previous run:], 2)
+          eval $ac_var=\$ac_old_val
+        fi
+        AS_MESSAGE([  former value:  `$ac_old_val'], 2)
+        AS_MESSAGE([  current value: `$ac_new_val'], 2)
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+dnl If you change this globbing pattern, test it on an old shell --
+dnl it's sensitive.  Putting any kind of quote in it causes syntax errors.
+[    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)]
+      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  AS_MESSAGE([error: changes in the environment can compromise the build], 2)
+  AS_ERROR([run `make distclean' and/or `rm $cache_file' and start over])
+fi
+])# _AC_ARG_VAR_VALIDATE
 ])])