143 lines
4.6 KiB
Diff
143 lines
4.6 KiB
Diff
2009-07-22 Jason Merrill <jason@redhat.com>
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* config/elfos.h (ASM_DECLARE_OBJECT_NAME): Use gnu_unique_object
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type if available.
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* configure.ac: Test for it.
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* configure, config.in: Regenerate.
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--- gcc/config/elfos.h.jj 2009-04-14 15:51:24.000000000 +0200
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+++ gcc/config/elfos.h 2009-07-23 09:25:46.000000000 +0200
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@@ -289,24 +289,37 @@ see the files COPYING3 and COPYING.RUNTI
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/* Write the extra assembler code needed to declare an object properly. */
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-#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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- do \
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- { \
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- HOST_WIDE_INT size; \
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- \
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- ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
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- \
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- size_directive_output = 0; \
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- if (!flag_inhibit_size_directive \
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- && (DECL) && DECL_SIZE (DECL)) \
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- { \
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- size_directive_output = 1; \
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- size = int_size_in_bytes (TREE_TYPE (DECL)); \
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- ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
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- } \
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- \
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- ASM_OUTPUT_LABEL (FILE, NAME); \
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- } \
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+#ifdef HAVE_GAS_GNU_UNIQUE_OBJECT
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+#define USE_GNU_UNIQUE_OBJECT 1
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+#else
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+#define USE_GNU_UNIQUE_OBJECT 0
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+#endif
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+
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+#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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+ do \
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+ { \
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+ HOST_WIDE_INT size; \
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+ \
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+ /* For template static data member instantiations or \
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+ inline fn local statics, use gnu_unique_object so that \
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+ they will be combined even under RTLD_LOCAL. */ \
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+ if (USE_GNU_UNIQUE_OBJECT \
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+ && !DECL_ARTIFICIAL (DECL) && DECL_ONE_ONLY (DECL)) \
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+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "gnu_unique_object"); \
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+ else \
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+ ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
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+ \
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+ size_directive_output = 0; \
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+ if (!flag_inhibit_size_directive \
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+ && (DECL) && DECL_SIZE (DECL)) \
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+ { \
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+ size_directive_output = 1; \
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+ size = int_size_in_bytes (TREE_TYPE (DECL)); \
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+ ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
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+ } \
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+ \
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+ ASM_OUTPUT_LABEL (FILE, NAME); \
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+ } \
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while (0)
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/* Output the size directive for a decl in rest_of_decl_compilation
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--- gcc/configure.ac.jj 2009-03-28 09:53:59.000000000 +0100
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+++ gcc/configure.ac 2009-07-23 09:25:46.000000000 +0200
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@@ -3299,6 +3299,12 @@ gcc_GAS_CHECK_FEATURE([.lcomm with align
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[AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1,
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[Define if your assembler supports .lcomm with an alignment field.])])
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+gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object,
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+ [elf,2,19,52],,
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+[.type foo, @gnu_unique_object],,
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+[AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1,
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+ [Define if your assembler supports @gnu_unique_object.])])
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+
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AC_CACHE_CHECK([assembler for tolerance to line number 0],
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[gcc_cv_as_line_zero],
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[gcc_cv_as_line_zero=no
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--- gcc/configure.jj 2009-03-28 09:53:37.000000000 +0100
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+++ gcc/configure 2009-07-23 09:26:52.000000000 +0200
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@@ -24288,6 +24288,44 @@ _ACEOF
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fi
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+echo "$as_me:$LINENO: checking assembler for gnu_unique_object" >&5
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+echo $ECHO_N "checking assembler for gnu_unique_object... $ECHO_C" >&6
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+if test "${gcc_cv_as_gnu_unique_object+set}" = set; then
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+ echo $ECHO_N "(cached) $ECHO_C" >&6
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+else
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+ gcc_cv_as_gnu_unique_object=no
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+ if test $in_tree_gas = yes; then
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+ if test $in_tree_gas_is_elf = yes \
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+ && test $gcc_cv_gas_vers -ge `expr \( \( 2 \* 1000 \) + 19 \) \* 1000 + 52`
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+ then gcc_cv_as_gnu_unique_object=yes
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+fi
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+ elif test x$gcc_cv_as != x; then
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+ echo '.type foo, @gnu_unique_object' > conftest.s
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+ if { ac_try='$gcc_cv_as -o conftest.o conftest.s >&5'
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+ { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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+ (eval $ac_try) 2>&5
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+ ac_status=$?
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+ echo "$as_me:$LINENO: \$? = $ac_status" >&5
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+ (exit $ac_status); }; }
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+ then
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+ gcc_cv_as_gnu_unique_object=yes
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+ else
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+ echo "configure: failed program was" >&5
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+ cat conftest.s >&5
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+ fi
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+ rm -f conftest.o conftest.s
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+ fi
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+fi
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+echo "$as_me:$LINENO: result: $gcc_cv_as_gnu_unique_object" >&5
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+echo "${ECHO_T}$gcc_cv_as_gnu_unique_object" >&6
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+if test $gcc_cv_as_gnu_unique_object = yes; then
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+
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+cat >>confdefs.h <<\_ACEOF
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+#define HAVE_GAS_GNU_UNIQUE_OBJECT 1
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+_ACEOF
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+
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+fi
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+
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echo "$as_me:$LINENO: checking assembler for tolerance to line number 0" >&5
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echo $ECHO_N "checking assembler for tolerance to line number 0... $ECHO_C" >&6
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if test "${gcc_cv_as_line_zero+set}" = set; then
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--- gcc/config.in.jj 2009-02-16 22:48:20.000000000 +0100
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+++ gcc/config.in 2009-07-23 09:26:56.000000000 +0200
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@@ -845,6 +845,12 @@
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#endif
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+/* Define if your assembler supports @gnu_unique_object. */
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+#ifndef USED_FOR_TARGET
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+#undef HAVE_GAS_GNU_UNIQUE_OBJECT
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+#endif
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+
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+
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/* Define if your assembler and linker support .hidden. */
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#undef HAVE_GAS_HIDDEN
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