22 files changed, 243 insertions, 115 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index eff1a34bd58..c853d5c772c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,19 @@
+2014-05-28  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* configure.ac ($gcc_cv_ld_clearcap): New test.
+	* configure: Regenerate.
+	* config.in: Regenerate.
+	* config/sol2.opt (mclear-hwcap): New option.
+	* config/sol2.h (LINK_CLEARCAP_SPEC): Define.
+	* config/sol2-clearcap.map: Moved here from
+	testsuite/gcc.target/i386/clearcap.map.
+	* config/sol2-clearcapv2.map: Move here from
+	gcc.target/i386/clearcapv2.map.
+	* config/t-sol2 (install): Depend on install-clearcap-map.
+	(install-clearcap-map): New target.
+	* doc/invoke.texi (Option Summary, Solaris 2 Options): Document
+	-mclear-hwcap.
+
 2014-05-28  Georg-Johann Lay  <avr@gjlay.de>
 
 	PR libgcc/61152
diff --git a/gcc/config.in b/gcc/config.in
index af02866dd33..1e8532567c7 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -1254,6 +1254,13 @@
 #endif
 
 
+/* Define if the linker supports clearing hardware capabilities via mapfile.
+   */
+#ifndef USED_FOR_TARGET
+#undef HAVE_LD_CLEARCAP
+#endif
+
+
 /* Define if your linker supports --demangle option. */
 #ifndef USED_FOR_TARGET
 #undef HAVE_LD_DEMANGLE
diff --git a/gcc/config/sol2-clearcap.map b/gcc/config/sol2-clearcap.map
new file mode 100644
index 00000000000..2d880c983e4
--- /dev/null
+++ b/gcc/config/sol2-clearcap.map
@@ -0,0 +1,2 @@
+# Clear all hardware capabilities emitted by Sun as.
+hwcap_1 = V0x0 OVERRIDE;
diff --git a/gcc/config/sol2-clearcapv2.map b/gcc/config/sol2-clearcapv2.map
new file mode 100644
index 00000000000..3c0cacedbf0
--- /dev/null
+++ b/gcc/config/sol2-clearcapv2.map
@@ -0,0 +1,7 @@
+# Clear all hardware capabilities emitted by Sun as.
+#
+# Uses mapfile v2 syntax which is the only way to clear AT_SUN_CAP_HW2 flags.
+$mapfile_version 2
+CAPABILITY {
+  HW = ;
+};
diff --git a/gcc/config/sol2.h b/gcc/config/sol2.h
index 2a657db59c1..cab7e6b0c61 100644
--- a/gcc/config/sol2.h
+++ b/gcc/config/sol2.h
@@ -183,12 +183,21 @@ along with GCC; see the file COPYING3.  If not see
 #define LINK_LIBGCC_MAPFILE_SPEC ""
 #endif
 
+/* Clear hardware capabilities, either explicitly or with OpenMP:
+   #pragma openmp declare simd creates clones for SSE2, AVX, and AVX2.  */
+#ifdef HAVE_LD_CLEARCAP
+#define LINK_CLEARCAP_SPEC " %{mclear-hwcap|fopenmp*:-M %sclearcap.map}"
+#else
+#define LINK_CLEARCAP_SPEC ""
+#endif
+
 #undef  LINK_SPEC
 #define LINK_SPEC \
   "%{h*} %{v:-V} \
    %{!shared:%{!static:%{rdynamic: " RDYNAMIC_SPEC "}}} \
    %{static:-dn -Bstatic} \
-   %{shared:-G -dy %{!mimpure-text:-z text}} " LINK_LIBGCC_MAPFILE_SPEC " \
+   %{shared:-G -dy %{!mimpure-text:-z text}} " \
+   LINK_LIBGCC_MAPFILE_SPEC LINK_CLEARCAP_SPEC " \
    %{symbolic:-Bsymbolic -G -dy -z text} \
    %(link_arch) \
    %{Qy:} %{!Qn:-Qy}"
diff --git a/gcc/config/sol2.opt b/gcc/config/sol2.opt
index a5ae7c510ad..16a3e5f581b 100644
--- a/gcc/config/sol2.opt
+++ b/gcc/config/sol2.opt
@@ -27,6 +27,10 @@ Driver Joined
 Ym,
 Driver Joined
 
+mclear-hwcap
+Target Report
+Clear hardware capabilities when linking
+
 mimpure-text
 Target Report
 Pass -z text to linker
diff --git a/gcc/config/t-sol2 b/gcc/config/t-sol2
index a4c4af4ad03..25feb0486fd 100644
--- a/gcc/config/t-sol2
+++ b/gcc/config/t-sol2
@@ -35,3 +35,10 @@ sol2-stubs.o: $(srcdir)/config/sol2-stubs.c
 sol2.o: $(srcdir)/config/sol2.c
 	$(COMPILE) $<
 	$(POSTCOMPILE)
+
+# Install clearcap.map if present.
+install: install-clearcap-map
+
+# Ignore failures: file only exists if linker supports it.
+install-clearcap-map:
+	-$(INSTALL_DATA) clearcap.map $(DESTDIR)$(libdir)
diff --git a/gcc/configure b/gcc/configure
index 3cc3203cc3f..eae8fc852c4 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -27056,6 +27056,34 @@ _ACEOF
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking linker mapfile support for clearing hardware capabilities" >&5
+$as_echo_n "checking linker mapfile support for clearing hardware capabilities... " >&6; }
+saved_LDFLAGS="$LDFLAGS"
+for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
+  LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+int main(void) {return 0;}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  gcc_cv_ld_clearcap=yes; break
+else
+  gcc_cv_ld_clearcap=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+done
+LDFLAGS="$saved_LDFLAGS"
+if test "x$gcc_cv_ld_clearcap" = xyes; then
+
+$as_echo "#define HAVE_LD_CLEARCAP 1" >>confdefs.h
+
+  ac_config_links="$ac_config_links clearcap.map:${srcdir}/config/$clearcap_map"
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_ld_clearcap" >&5
+$as_echo "$gcc_cv_ld_clearcap" >&6; }
+
 case "$target:$tm_file" in
   powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
   case "$target" in
@@ -28585,6 +28613,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 # Files that config.status was made for.
 config_files="$ac_config_files"
 config_headers="$ac_config_headers"
+config_links="$ac_config_links"
 config_commands="$ac_config_commands"
 
 _ACEOF
@@ -28614,6 +28643,9 @@ $config_files
 Configuration headers:
 $config_headers
 
+Configuration links:
+$config_links
+
 Configuration commands:
 $config_commands
 
@@ -28749,6 +28781,7 @@ do
     "as") CONFIG_FILES="$CONFIG_FILES as:exec-tool.in" ;;
     "collect-ld") CONFIG_FILES="$CONFIG_FILES collect-ld:exec-tool.in" ;;
     "nm") CONFIG_FILES="$CONFIG_FILES nm:exec-tool.in" ;;
+    "clearcap.map") CONFIG_LINKS="$CONFIG_LINKS clearcap.map:${srcdir}/config/$clearcap_map" ;;
     "$all_outputs") CONFIG_FILES="$CONFIG_FILES $all_outputs" ;;
     "default") CONFIG_COMMANDS="$CONFIG_COMMANDS default" ;;
 
@@ -28764,6 +28797,7 @@ done
 if $ac_need_defaults; then
   test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
   test "${CONFIG_HEADERS+set}" = set || CONFIG_HEADERS=$config_headers
+  test "${CONFIG_LINKS+set}" = set || CONFIG_LINKS=$config_links
   test "${CONFIG_COMMANDS+set}" = set || CONFIG_COMMANDS=$config_commands
 fi
 
@@ -29085,7 +29119,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 fi # test -n "$CONFIG_HEADERS"
 
 
-eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS  :L $CONFIG_LINKS  :C $CONFIG_COMMANDS"
 shift
 for ac_tag
 do
@@ -29321,7 +29355,38 @@ $as_echo "$as_me: $ac_file is unchanged" >&6;}
       || as_fn_error "could not create -" "$LINENO" 5
   fi
  ;;
+  :L)
+  #
+  # CONFIG_LINK
+  #
+
+  if test "$ac_source" = "$ac_file" && test "$srcdir" = '.'; then
+    :
+  else
+    # Prefer the file from the source tree if names are identical.
+    if test "$ac_source" = "$ac_file" || test ! -r "$ac_source"; then
+      ac_source=$srcdir/$ac_source
+    fi
 
+    { $as_echo "$as_me:${as_lineno-$LINENO}: linking $ac_source to $ac_file" >&5
+$as_echo "$as_me: linking $ac_source to $ac_file" >&6;}
+
+    if test ! -r "$ac_source"; then
+      as_fn_error "$ac_source: file not found" "$LINENO" 5
+    fi
+    rm -f "$ac_file"
+
+    # Try a relative symlink, then a hard link, then a copy.
+    case $srcdir in
+    [\\/$]* | ?:[\\/]* ) ac_rel_source=$ac_source ;;
+	*) ac_rel_source=$ac_top_build_prefix$ac_source ;;
+    esac
+    ln -s "$ac_rel_source" "$ac_file" 2>/dev/null ||
+      ln "$ac_source" "$ac_file" 2>/dev/null ||
+      cp -p "$ac_source" "$ac_file" ||
+      as_fn_error "cannot link or copy $ac_source to $ac_file" "$LINENO" 5
+  fi
+ ;;
   :C)  { $as_echo "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
 $as_echo "$as_me: executing $ac_file commands" >&6;}
  ;;
diff --git a/gcc/configure.ac b/gcc/configure.ac
index 80f9d0f6be6..87c7d6baf8f 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -4806,6 +4806,21 @@ if test x"$gcc_cv_ld_as_needed" = xyes; then
 [Define to the linker option to keep unused dependencies.])
 fi
 
+AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities)
+saved_LDFLAGS="$LDFLAGS"
+for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do
+  LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map"
+  AC_LINK_IFELSE([int main(void) {return 0;}],
+    [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no])
+done
+LDFLAGS="$saved_LDFLAGS"
+if test "x$gcc_cv_ld_clearcap" = xyes; then
+  AC_DEFINE([HAVE_LD_CLEARCAP], 1,
+[Define if the linker supports clearing hardware capabilities via mapfile.])
+  AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map])
+fi
+AC_MSG_RESULT($gcc_cv_ld_clearcap)
+
 case "$target:$tm_file" in
   powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*)
   case "$target" in
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index d3414ceb4dd..9d8ffc0da30 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -978,7 +978,7 @@ See RS/6000 and PowerPC Options.
 -mpretend-cmove -mtas}
 
 @emph{Solaris 2 Options}
-@gccoptlist{-mimpure-text  -mno-impure-text @gol
+@gccoptlist{-mclear-hwcap -mno-clear-hwcap -mimpure-text  -mno-impure-text @gol
 -pthreads -pthread}
 
 @emph{SPARC Options}
@@ -20831,6 +20831,13 @@ patterns.  This can result in faster code on the SH4 processor.
 These @samp{-m} options are supported on Solaris 2:
 
 @table @gcctabopt
+@item -mclear-hwcap
+@opindex mclear-hwcap
+@option{-mclear-hwcap} tells the compiler to remove the hardware
+capabilities generated by the Solaris assembler.  This is only necessary
+when object files use ISA extensions not supported by the current
+machine, but check at runtime whether or not to use them.
+
 @item -mimpure-text
 @opindex mimpure-text
 @option{-mimpure-text}, used in addition to @option{-shared}, tells
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index c86029a4df8..6ca8e784e5a 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,16 @@
+2014-05-28  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* lib/clearcap.exp: New file.
+	* gcc.dg/vect/vect.exp: Load clearcap.exp.
+	Remove clearcap_ldflags handling.
+	Call clearcap-init, clearcap-finish.
+	* gcc.target/i386/i386.exp: Likewise.
+	* gcc.target/i386/clearcap.map: Move to ../config/sol2-clearcap.map.
+	* gcc.target/i386/clearcapv2.map: Move to
+	../config/sol2-clearcapv2.map.
+	* gcc.target/x86_64/abi/avx/abi-avx.exp: Likewise.
+	* gcc.target/x86_64/abi/avx512f/abi-avx512f.exp: Likewise.
+
 2014-05-27  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gnat.dg/aliasing1.adb (dg-final): Robustify pattern matching.
diff --git a/gcc/testsuite/gcc.dg/vect/vect.exp b/gcc/testsuite/gcc.dg/vect/vect.exp
index fa11e7e5eea..e8d866b991c 100644
--- a/gcc/testsuite/gcc.dg/vect/vect.exp
+++ b/gcc/testsuite/gcc.dg/vect/vect.exp
@@ -18,6 +18,7 @@
 
 # Load support procs.
 load_lib gcc-dg.exp
+load_lib clearcap.exp
 
 # Set up flags used for tests that don't specify options.
 global DEFAULT_VECTCFLAGS
@@ -41,30 +42,9 @@ if ![check_vect_support_and_set_flags] {
 # These flags are used for all targets.
 lappend DEFAULT_VECTCFLAGS "-ftree-vectorize" "-fno-vect-cost-model" "-fno-common"
 
-# If the linker used understands -M <mapfile>, pass it to clear hardware
-# capabilities set by the Sun assembler.
-# Try mapfile syntax v2 first which is the only way to clear hwcap_2 flags.
-set clearcap_ldflags "-Wl,-M,$srcdir/gcc.target/i386/clearcapv2.map"
-
-if ![check_no_compiler_messages mapfilev2 executable {
-    int main (void) { return 0; }
-} $clearcap_ldflags ] {
-    # If this doesn't work, fall back to the less capable v1 syntax.
-    set clearcap_ldflags "-Wl,-M,$srcdir/gcc.target/i386/clearcap.map"
-
-    if ![check_no_compiler_messages mapfile executable {
-	int main (void) { return 0; }
-    } $clearcap_ldflags ] {
-	unset clearcap_ldflags
-    }
-}
-
-if [info exists clearcap_ldflags] {
-    lappend DEFAULT_VECTCFLAGS $clearcap_ldflags
-}
-
 # Initialize `dg'.
 dg-init
+clearcap-init
 
 global VEC_FLAGS
 set VEC_FLAGS $DEFAULT_VECTCFLAGS
@@ -308,4 +288,5 @@ dg-runtest [lsort [glob -nocomplain $srcdir/$subdir/no-tree-sra-bb-slp-*.\[cS\]]
 set dg-do-what-default ${save-dg-do-what-default}
 
 # All done.
+clearcap-finish
 dg-finish
diff --git a/gcc/testsuite/gcc.target/i386/clearcap.map b/gcc/testsuite/gcc.target/i386/clearcap.map
deleted file mode 100644
index 147f922d1e5..00000000000
--- a/gcc/testsuite/gcc.target/i386/clearcap.map
+++ /dev/null
@@ -1,3 +0,0 @@
-# clear all hardware capabilities emitted by Sun as: the tests here
-# guard against execution at runtime
-hwcap_1 = V0x0 OVERRIDE;
diff --git a/gcc/testsuite/gcc.target/i386/clearcapv2.map b/gcc/testsuite/gcc.target/i386/clearcapv2.map
deleted file mode 100644
index 95cb14cc5d2..00000000000
--- a/gcc/testsuite/gcc.target/i386/clearcapv2.map
+++ /dev/null
@@ -1,7 +0,0 @@
-# clear all hardware capabilities emitted by Sun as: the tests here
-# guard against execution at runtime
-# uses mapfile v2 syntax which is the only way to clear AT_SUN_CAP_HW2 flags
-$mapfile_version 2
-CAPABILITY {
-  HW = ;
-};
diff --git a/gcc/testsuite/gcc.target/i386/i386.exp b/gcc/testsuite/gcc.target/i386/i386.exp
index 080e302b782..d9b36cd30da 100644
--- a/gcc/testsuite/gcc.target/i386/i386.exp
+++ b/gcc/testsuite/gcc.target/i386/i386.exp
@@ -23,6 +23,7 @@ if { ![istarget i?86*-*-*] && ![istarget x86_64-*-*] } then {
 
 # Load support procs.
 load_lib gcc-dg.exp
+load_lib clearcap.exp
 
 # Return 1 if attribute ms_hook_prologue is supported.
 proc check_effective_target_ms_hook_prologue { } {
@@ -307,39 +308,6 @@ proc check_effective_target_sha { } {
     } "-O2 -msha" ]
 }
 
-# If the linker used understands -M <mapfile>, pass it to clear hardware
-# capabilities set by the Sun assembler.
-# Try mapfile syntax v2 first which is the only way to clear hwcap_2 flags.
-set clearcap_ldflags "-Wl,-M,$srcdir/$subdir/clearcapv2.map"
-
-if ![check_no_compiler_messages mapfilev2 executable {
-    int main (void) { return 0; }
-} $clearcap_ldflags ] {
-    # If this doesn't work, fall back to the less capable v1 syntax.
-    set clearcap_ldflags "-Wl,-M,$srcdir/$subdir/clearcap.map"
-
-    if ![check_no_compiler_messages mapfile executable {
-	int main (void) { return 0; }
-    } $clearcap_ldflags ] {
-	unset clearcap_ldflags
-    }
-}
-
-if [info exists clearcap_ldflags] {
-  if { [info procs gcc_target_compile] != [list] \
-	&& [info procs saved_gcc_target_compile] == [list] } {
-    rename gcc_target_compile saved_gcc_target_compile
-
-    proc gcc_target_compile { source dest type options } {
-      global clearcap_ldflags
-      # Always pass -Wl,-M,<mapfile>, but don't let it show up in gcc.sum.
-      lappend options "additional_flags=$clearcap_ldflags"
-
-      return [saved_gcc_target_compile $source $dest $type $options]
-    }
-  }
-}
-
 # If a testcase doesn't have special options, use these.
 global DEFAULT_CFLAGS
 if ![info exists DEFAULT_CFLAGS] then {
@@ -348,6 +316,7 @@ if ![info exists DEFAULT_CFLAGS] then {
 
 # Initialize `dg'.
 dg-init
+clearcap-init
 
 # Special case compilation of vect-args.c so we don't have to
 # replicate it 10 times.
@@ -367,4 +336,5 @@ set tests [prune $tests $srcdir/$subdir/vect-args.c]
 dg-runtest $tests "" $DEFAULT_CFLAGS
 
 # All done.
+clearcap-finish
 dg-finish
diff --git a/gcc/testsuite/gcc.target/x86_64/abi/avx/abi-avx.exp b/gcc/testsuite/gcc.target/x86_64/abi/avx/abi-avx.exp
index d6fc1874f18..624b7ea75f2 100644
--- a/gcc/testsuite/gcc.target/x86_64/abi/avx/abi-avx.exp
+++ b/gcc/testsuite/gcc.target/x86_64/abi/avx/abi-avx.exp
@@ -20,6 +20,7 @@
 load_lib c-torture.exp
 load_lib target-supports.exp
 load_lib torture-options.exp
+load_lib clearcap.exp
 
 if { (![istarget x86_64-*-*] && ![istarget i?86-*-*])
      || ![is-effective-target lp64]
@@ -28,20 +29,10 @@ if { (![istarget x86_64-*-*] && ![istarget i?86-*-*])
 }
 
 
-# If the linker used understands -M <mapfile>, pass it to clear hardware
-# capabilities set by the Sun assembler.
-set flags ""
-set clearcap_ldflags "-Wl,-M,$srcdir/gcc.target/i386/clearcap.map"
-
-if [check_no_compiler_messages mapfile executable {
-	int main (void) { return 0; }
-  } $clearcap_ldflags ] {
-  set flags $clearcap_ldflags
-}
-
 torture-init
+clearcap-init
 set-torture-options $C_TORTURE_OPTIONS
-set additional_flags "-W -Wall -mavx $flags"
+set additional_flags "-W -Wall -mavx"
 
 foreach src [lsort [glob -nocomplain $srcdir/$subdir/test_*.c]] {
     if {[runtest_file_p $runtests $src]} {
@@ -58,4 +49,5 @@ foreach src [lsort [glob -nocomplain $srcdir/$subdir/test_*.c]] {
     }
 }
 
+clearcap-finish
 torture-finish
diff --git a/gcc/testsuite/gcc.target/x86_64/abi/avx512f/abi-avx512f.exp b/gcc/testsuite/gcc.target/x86_64/abi/avx512f/abi-avx512f.exp
index cef6fa14154..f8f991e9276 100644
--- a/gcc/testsuite/gcc.target/x86_64/abi/avx512f/abi-avx512f.exp
+++ b/gcc/testsuite/gcc.target/x86_64/abi/avx512f/abi-avx512f.exp
@@ -20,6 +20,7 @@
 load_lib c-torture.exp
 load_lib target-supports.exp
 load_lib torture-options.exp
+load_lib clearcap.exp
 
 if { (![istarget x86_64-*-*] && ![istarget i?86-*-*])
      || ![is-effective-target lp64]
@@ -28,20 +29,10 @@ if { (![istarget x86_64-*-*] && ![istarget i?86-*-*])
 }
 
 
-# If the linker used understands -M <mapfile>, pass it to clear hardware
-# capabilities set by the Sun assembler.
-set flags ""
-set clearcap_ldflags "-Wl,-M,$srcdir/gcc.target/i386/clearcap.map"
-
-if [check_no_compiler_messages mapfile executable {
-	int main (void) { return 0; }
-  } $clearcap_ldflags ] {
-  set flags $clearcap_ldflags
-}
-
 torture-init
+clearcap-init
 set-torture-options $C_TORTURE_OPTIONS
-set additional_flags "-W -Wall -mavx512f $flags"
+set additional_flags "-W -Wall -mavx512f"
 
 foreach src [lsort [glob -nocomplain $srcdir/$subdir/test_*.c]] {
     if {[runtest_file_p $runtests $src]} {
@@ -58,4 +49,5 @@ foreach src [lsort [glob -nocomplain $srcdir/$subdir/test_*.c]] {
     }
 }
 
+clearcap-finish
 torture-finish
diff --git a/gcc/testsuite/lib/clearcap.exp b/gcc/testsuite/lib/clearcap.exp
new file mode 100644
index 00000000000..044881fbd3f
--- /dev/null
+++ b/gcc/testsuite/lib/clearcap.exp
@@ -0,0 +1,58 @@
+# Copyright (C) 2014 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
+
+# Clear hardware capabilities on Solaris.
+if [istarget *-*-solaris2*] {
+    set clearcap_ldflags "-mclear-hwcap"
+}
+
+#
+# clearcap-init -- called at the start of each subdir of tests
+#
+
+proc clearcap-init { args } {
+    global TEST_ALWAYS_FLAGS
+    global ALWAYS_CXXFLAGS
+    global clearcap_saved_TEST_ALWAYS_FLAGS
+    global clearcap_ldflags
+
+    if [info exists TEST_ALWAYS_FLAGS] {
+	set clearcap_saved_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
+    }
+    if [info exists clearcap_ldflags] {
+	if [info exists ALWAYS_CXXFLAGS] {
+	    set ALWAYS_CXXFLAGS [concat "{ldflags=$clearcap_ldflags}" $ALWAYS_CXXFLAGS]
+	} else {
+	    append TEST_ALWAYS_FLAGS " $clearcap_ldflags"
+	}
+    }
+    return 0
+}
+
+#
+# clearcap-finish -- called at the start of each subdir of tests
+#
+
+proc clearcap-finish { args } {
+    global TEST_ALWAYS_FLAGS
+    global clearcap_saved_TEST_ALWAYS_FLAGS
+
+    if [info exists clearcap_saved_TEST_ALWAYS_FLAGS] {
+	set TEST_ALWAYS_FLAGS $clearcap_saved_TEST_ALWAYS_FLAGS
+    } else {
+	unset TEST_ALWAYS_FLAGS
+    }
+}
diff --git a/libitm/ChangeLog b/libitm/ChangeLog
index 9bd84a57f6b..5c1b352a4ee 100644
--- a/libitm/ChangeLog
+++ b/libitm/ChangeLog
@@ -1,3 +1,10 @@
+2014-05-28  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	* acinclude.m4 (LIBITM_CHECK_LINKER_HWCAP): Check for
+	-mclear-hwcap instead.
+	* configure: Regenerate.
+	* clearcap.map: Remove.
+
 2014-04-22  Release Manager
 
 	* GCC 4.9.0 released.
diff --git a/libitm/acinclude.m4 b/libitm/acinclude.m4
index ca7e0a92118..a82f6d6179b 100644
--- a/libitm/acinclude.m4
+++ b/libitm/acinclude.m4
@@ -301,10 +301,10 @@ AC_DEFUN([LIBITM_CHECK_LINKER_FEATURES], [
 
 dnl
 dnl Check if the linker used supports linker maps to clear hardware
-dnl capabilities.  This is only supported by Sun ld at the moment.
+dnl capabilities.  This is only supported on Solaris at the moment.
 dnl
 dnl Defines:
-dnl  HWCAP_LDFLAGS='-Wl,-M,clearcap.map' if possible
+dnl  HWCAP_LDFLAGS=-mclear-hwcap if possible
 dnl  LD (as a side effect of testing)
 dnl
 AC_DEFUN([LIBITM_CHECK_LINKER_HWCAP], [
@@ -312,12 +312,12 @@ AC_DEFUN([LIBITM_CHECK_LINKER_HWCAP], [
   AC_REQUIRE([AC_PROG_LD])
 
   ac_save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LFLAGS -Wl,-M,$srcdir/clearcap.map"
+  LDFLAGS="$LFLAGS -mclear-hwcap"
 
-  AC_MSG_CHECKING([for ld that supports -Wl,-M,mapfile])
+  AC_MSG_CHECKING([for -mclear-hwcap])
   AC_TRY_LINK([], [return 0;], [ac_hwcap_ldflags=yes],[ac_hwcap_ldflags=no])
   if test "$ac_hwcap_ldflags" = "yes"; then
-    HWCAP_LDFLAGS="-Wl,-M,$srcdir/clearcap.map $HWCAP_LDFLAGS"
+    HWCAP_LDFLAGS="-mclear-hwcap $HWCAP_LDFLAGS"
   fi
   AC_MSG_RESULT($ac_hwcap_ldflags)
 
diff --git a/libitm/clearcap.map b/libitm/clearcap.map
deleted file mode 100644
index bd8189b43ff..00000000000
--- a/libitm/clearcap.map
+++ /dev/null
@@ -1,14 +0,0 @@
-# Clear hardware capabilities emitted by Sun as: calls to the x86_avx.c
-# functions are only emitted with -mavx.
-#
-# The v1 mapfile syntax has no support for clearing specific capabilities,
-# so clear everything.
-#
-hwcap_1 = V0x0 OVERRIDE;
-#
-# If we can assume mapfile v2 syntax, we can specificially clear AVX.
-#
-#$mapfile_version 2
-#CAPABILITY {
-#	HW -= AVX;
-#};
diff --git a/libitm/configure b/libitm/configure
index 031c19ce337..ce6d50a7d3a 100644
--- a/libitm/configure
+++ b/libitm/configure
@@ -16739,10 +16739,10 @@ with_gnu_ld=$lt_cv_prog_gnu_ld
 
 
   ac_save_LDFLAGS="$LDFLAGS"
-  LDFLAGS="$LFLAGS -Wl,-M,$srcdir/clearcap.map"
+  LDFLAGS="$LFLAGS -mclear-hwcap"
 
-  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ld that supports -Wl,-M,mapfile" >&5
-$as_echo_n "checking for ld that supports -Wl,-M,mapfile... " >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -mclear-hwcap" >&5
+$as_echo_n "checking for -mclear-hwcap... " >&6; }
   cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -16762,7 +16762,7 @@ fi
 rm -f core conftest.err conftest.$ac_objext \
     conftest$ac_exeext conftest.$ac_ext
   if test "$ac_hwcap_ldflags" = "yes"; then
-    HWCAP_LDFLAGS="-Wl,-M,$srcdir/clearcap.map $HWCAP_LDFLAGS"
+    HWCAP_LDFLAGS="-mclear-hwcap $HWCAP_LDFLAGS"
   fi
   { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_hwcap_ldflags" >&5
 $as_echo "$ac_hwcap_ldflags" >&6; }