configure.ac: Do valgrind header checks unconditionally.

2014-04-28  Richard Biener  <rguenther@suse.de>

	* configure.ac: Do valgrind header checks unconditionally.
	Add --enable-valgrind-annotations.
	* system.h: Guard valgrind header inclusion with
	ENABLE_VALGRIND_ANNOTATIONS instead of ENABLE_VALGRIND_CHECKING.
	* alloc-pool.c (pool_alloc, pool_free): Use
	ENABLE_VALGRIND_ANNOTATIONS instead of ENABLE_VALGRIND_CHECKING
	to guard possibly dead code.
	* config.in: Regenerated.
	* configure: Likewise.

From-SVN: r209861

6 files changed, 101 insertions, 44 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 89930b0042c..3b3f613464d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+2014-04-28  Richard Biener  <rguenther@suse.de>
+
+	* configure.ac: Do valgrind header checks unconditionally.
+	Add --enable-valgrind-annotations.
+	* system.h: Guard valgrind header inclusion with
+	ENABLE_VALGRIND_ANNOTATIONS instead of ENABLE_VALGRIND_CHECKING.
+	* alloc-pool.c (pool_alloc, pool_free): Use
+	ENABLE_VALGRIND_ANNOTATIONS instead of ENABLE_VALGRIND_CHECKING
+	to guard possibly dead code.
+	* config.in: Regenerated.
+	* configure: Likewise.
+
 2014-04-28  Jeff Law  <law@redhat.com>
 
 	PR tree-optimization/60902
diff --git a/gcc/alloc-pool.c b/gcc/alloc-pool.c
index dfb13ce55fb..87fbd8556fb 100644
--- a/gcc/alloc-pool.c
+++ b/gcc/alloc-pool.c
@@ -250,7 +250,7 @@ void *
 pool_alloc (alloc_pool pool)
 {
   alloc_pool_list header;
-#ifdef ENABLE_VALGRIND_CHECKING
+#ifdef ENABLE_VALGRIND_ANNOTATIONS
   int size;
 #endif
 
@@ -265,7 +265,7 @@ pool_alloc (alloc_pool pool)
     }
 
   gcc_checking_assert (pool);
-#ifdef ENABLE_VALGRIND_CHECKING
+#ifdef ENABLE_VALGRIND_ANNOTATIONS
   size = pool->elt_size - offsetof (allocation_object, u.data);
 #endif
 
@@ -334,7 +334,7 @@ void
 pool_free (alloc_pool pool, void *ptr)
 {
   alloc_pool_list header;
-#if defined(ENABLE_VALGRIND_CHECKING) || defined(ENABLE_CHECKING)
+#if defined(ENABLE_VALGRIND_ANNOTATIONS) || defined(ENABLE_CHECKING)
   int size;
   size = pool->elt_size - offsetof (allocation_object, u.data);
 #endif
diff --git a/gcc/config.in b/gcc/config.in
index cebe0e5349c..c0ba36ea98b 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -172,6 +172,12 @@
 #endif
 
 
+/* Define to get calls to the valgrind runtime enabled. */
+#ifndef USED_FOR_TARGET
+#undef ENABLE_VALGRIND_ANNOTATIONS
+#endif
+
+
 /* Define if you want to run subprograms and generated programs through
    valgrind (a memory checker). This is extremely expensive. */
 #ifndef USED_FOR_TARGET
diff --git a/gcc/configure b/gcc/configure
index e806873a04e..d912261c1cf 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -882,6 +882,7 @@ enable_werror_always
 enable_checking
 enable_coverage
 enable_gather_detailed_mem_stats
+enable_valgrind_annotations
 with_stabs
 enable_multilib
 enable_multiarch
@@ -1591,6 +1592,8 @@ Optional Features:
                           Values are opt, noopt, default is noopt
   --enable-gather-detailed-mem-stats
                           enable detailed memory allocation stats gathering
+  --enable-valgrind-annotations
+                          enable valgrind runtime interaction
   --enable-multilib       enable library support for multiple ABIs
   --enable-multiarch      enable support for multiarch paths
   --enable-__cxa_atexit   enable __cxa_atexit for C++
@@ -6772,12 +6775,11 @@ fi
 
 
 
-if test x$ac_valgrind_checking != x ; then
-  # It is certainly possible that there's valgrind but no valgrind.h.
-  # GCC relies on making annotations so we must have both.
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for VALGRIND_DISCARD in <valgrind/memcheck.h>" >&5
+# It is certainly possible that there's valgrind but no valgrind.h.
+# GCC relies on making annotations so we must have both.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for VALGRIND_DISCARD in <valgrind/memcheck.h>" >&5
 $as_echo_n "checking for VALGRIND_DISCARD in <valgrind/memcheck.h>... " >&6; }
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <valgrind/memcheck.h>
 #ifndef VALGRIND_DISCARD
@@ -6790,11 +6792,11 @@ else
   gcc_cv_header_valgrind_memcheck_h=no
 fi
 rm -f conftest.err conftest.$ac_ext
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_header_valgrind_memcheck_h" >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_header_valgrind_memcheck_h" >&5
 $as_echo "$gcc_cv_header_valgrind_memcheck_h" >&6; }
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for VALGRIND_DISCARD in <memcheck.h>" >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for VALGRIND_DISCARD in <memcheck.h>" >&5
 $as_echo_n "checking for VALGRIND_DISCARD in <memcheck.h>... " >&6; }
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 #include <memcheck.h>
 #ifndef VALGRIND_DISCARD
@@ -6807,8 +6809,20 @@ else
   gcc_cv_header_memcheck_h=no
 fi
 rm -f conftest.err conftest.$ac_ext
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_header_memcheck_h" >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_header_memcheck_h" >&5
 $as_echo "$gcc_cv_header_memcheck_h" >&6; }
+if test $gcc_cv_header_valgrind_memcheck_h = yes; then
+
+$as_echo "#define HAVE_VALGRIND_MEMCHECK_H 1" >>confdefs.h
+
+fi
+if test $gcc_cv_header_memcheck_h = yes; then
+
+$as_echo "#define HAVE_MEMCHECK_H 1" >>confdefs.h
+
+fi
+
+if test x$ac_valgrind_checking != x ; then
 
 # Prepare PATH_SEPARATOR.
 # The user is always right.
@@ -6887,16 +6901,6 @@ fi
 
 $as_echo "#define ENABLE_VALGRIND_CHECKING 1" >>confdefs.h
 
-  if test $gcc_cv_header_valgrind_memcheck_h = yes; then
-
-$as_echo "#define HAVE_VALGRIND_MEMCHECK_H 1" >>confdefs.h
-
-  fi
-  if test $gcc_cv_header_memcheck_h = yes; then
-
-$as_echo "#define HAVE_MEMCHECK_H 1" >>confdefs.h
-
-  fi
 fi
 
 
@@ -6939,6 +6943,25 @@ cat >>confdefs.h <<_ACEOF
 _ACEOF
 
 
+# Check whether --enable-valgrind-annotations was given.
+if test "${enable_valgrind_annotations+set}" = set; then :
+  enableval=$enable_valgrind_annotations;
+else
+  enable_valgrind_annotations=no
+fi
+
+if test x$enable_valgrind_annotations != xno \
+    || test x$ac_valgrind_checking != x; then
+  if (test $have_valgrind_h = no \
+      && test $gcc_cv_header_memcheck_h = no \
+      && test $gcc_cv_header_valgrind_memcheck_h = no); then
+    as_fn_error "*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h" "$LINENO" 5
+  fi
+
+$as_echo "#define ENABLE_VALGRIND_ANNOTATIONS 1" >>confdefs.h
+
+fi
+
 # -------------------------------
 # Miscenalleous configure options
 # -------------------------------
@@ -17971,7 +17994,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 17974 "configure"
+#line 17997 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -18077,7 +18100,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 18080 "configure"
+#line 18103 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/gcc/configure.ac b/gcc/configure.ac
index a3154bb32f1..5565524c89a 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -514,27 +514,36 @@ dnl # an if statement.  This was the source of very frustrating bugs
 dnl # in converting to autoconf 2.5x!
 AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no)
 
-if test x$ac_valgrind_checking != x ; then
-  # It is certainly possible that there's valgrind but no valgrind.h.
-  # GCC relies on making annotations so we must have both.
-  AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
-  AC_PREPROC_IFELSE([AC_LANG_SOURCE(
-    [[#include <valgrind/memcheck.h>
+# It is certainly possible that there's valgrind but no valgrind.h.
+# GCC relies on making annotations so we must have both.
+AC_MSG_CHECKING(for VALGRIND_DISCARD in <valgrind/memcheck.h>)
+AC_PREPROC_IFELSE([AC_LANG_SOURCE(
+  [[#include <valgrind/memcheck.h>
 #ifndef VALGRIND_DISCARD
 #error VALGRIND_DISCARD not defined
 #endif]])],
   [gcc_cv_header_valgrind_memcheck_h=yes],
   [gcc_cv_header_valgrind_memcheck_h=no])
-  AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
-  AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
-  AC_PREPROC_IFELSE([AC_LANG_SOURCE(
-    [[#include <memcheck.h>
+AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h)
+AC_MSG_CHECKING(for VALGRIND_DISCARD in <memcheck.h>)
+AC_PREPROC_IFELSE([AC_LANG_SOURCE(
+  [[#include <memcheck.h>
 #ifndef VALGRIND_DISCARD
 #error VALGRIND_DISCARD not defined
 #endif]])],
   [gcc_cv_header_memcheck_h=yes],
   [gcc_cv_header_memcheck_h=no])
-  AC_MSG_RESULT($gcc_cv_header_memcheck_h)
+AC_MSG_RESULT($gcc_cv_header_memcheck_h)
+if test $gcc_cv_header_valgrind_memcheck_h = yes; then
+  AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
+	[Define if valgrind's valgrind/memcheck.h header is installed.])
+fi
+if test $gcc_cv_header_memcheck_h = yes; then
+  AC_DEFINE(HAVE_MEMCHECK_H, 1,
+	[Define if valgrind's memcheck.h header is installed.])
+fi
+
+if test x$ac_valgrind_checking != x ; then
   AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind,
 	[$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1])
   if test "x$valgrind_path" = "x" \
@@ -548,14 +557,6 @@ if test x$ac_valgrind_checking != x ; then
   AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1,
 [Define if you want to run subprograms and generated programs
    through valgrind (a memory checker).  This is extremely expensive.])
-  if test $gcc_cv_header_valgrind_memcheck_h = yes; then
-    AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1,
-	[Define if valgrind's valgrind/memcheck.h header is installed.])
-  fi
-  if test $gcc_cv_header_memcheck_h = yes; then
-    AC_DEFINE(HAVE_MEMCHECK_H, 1,
-	[Define if valgrind's memcheck.h header is installed.])
-  fi
 fi
 AC_SUBST(valgrind_path_defines)
 AC_SUBST(valgrind_command)
@@ -594,6 +595,21 @@ gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else
 AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats,
 [Define to enable detailed memory allocation stats gathering.])
 
+AC_ARG_ENABLE(valgrind-annotations,
+[AS_HELP_STRING([--enable-valgrind-annotations],
+		[enable valgrind runtime interaction])], [],
+[enable_valgrind_annotations=no])
+if test x$enable_valgrind_annotations != xno \
+    || test x$ac_valgrind_checking != x; then
+  if (test $have_valgrind_h = no \
+      && test $gcc_cv_header_memcheck_h = no \
+      && test $gcc_cv_header_valgrind_memcheck_h = no); then
+    AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h])
+  fi
+  AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1,
+[Define to get calls to the valgrind runtime enabled.])
+fi
+
 # -------------------------------
 # Miscenalleous configure options
 # -------------------------------
diff --git a/gcc/system.h b/gcc/system.h
index 42bc509f2cd..892271f58a8 100644
--- a/gcc/system.h
+++ b/gcc/system.h
@@ -1025,7 +1025,7 @@ helper_const_non_const_cast (const char *p)
 #endif
 #endif
 
-#ifdef ENABLE_VALGRIND_CHECKING
+#ifdef ENABLE_VALGRIND_ANNOTATIONS
 # ifdef HAVE_VALGRIND_MEMCHECK_H
 #  include <valgrind/memcheck.h>
 # elif defined HAVE_MEMCHECK_H