*** empty log message ***

gold/ChangeLog

@@ -1,3 +1,12 @@
+2009-08-06  Sriraman Tallam  <tmsriram@google.com>
+
+	* x86_64.cc (Target_x86_64::Relocate::relocate_tls): Check for a
+	valid tls_segment only for non-debug-section relocations.
+	* testsuite/Makefile.am: Add gc_tls_test.
+	* testsuite/Makefile.in: Regenerate.
+	* testsuite/gc_tls_test.cc: New file.
+	* testsuite/gc_tls_test.sh: New file.
+
 2009-08-05  Sriraman Tallam  <tmsriram@google.com>
 	
 	* icf.cc: New file.

gold/testsuite/Makefile.am

@@ -115,6 +115,15 @@ gc_comdat_test: gc_comdat_test_1.o gc_comdat_test_2.o gcctestdir/ld
 gc_comdat_test.stdout: gc_comdat_test
 	$(TEST_NM) -C gc_comdat_test > gc_comdat_test.stdout
 
+check_SCRIPTS += gc_tls_test.sh
+check_DATA += gc_tls_test.stdout
+gc_tls_test.o: gc_tls_test.cc
+	$(CXXCOMPILE) -O0 -c -g -o $@ $<
+gc_tls_test:gc_tls_test.o gcctestdir/ld
+	$(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_tls_test.o
+gc_tls_test.stdout: gc_tls_test
+	$(TEST_NM) -C gc_tls_test > gc_tls_test.stdout
+
 check_SCRIPTS += icf_test.sh
 check_DATA += icf_test.stdout
 icf_test.o: icf_test.cc 

gold/testsuite/Makefile.in

@@ -57,12 +57,12 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 # Test --dynamic-list, --dynamic-list-data, --dynamic-list-cpp-new,
 # and --dynamic-list-cpp-typeinfo
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_1 = gc_comdat_test.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_test.sh two_file_shared.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_tls_test.sh icf_test.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	weak_plt.sh debug_msg.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	two_file_shared.sh weak_plt.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	undef_symbol.sh ver_test_1.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	debug_msg.sh undef_symbol.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_test_2.sh ver_test_4.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_test_1.sh ver_test_2.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_test_5.sh ver_test_7.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_test_4.sh ver_test_5.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_test_10.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_test_7.sh ver_test_10.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	ver_matching_test.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_3.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_4.sh \
@@ -75,6 +75,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 # We also want to make sure we do something reasonable when there's no
 # debug info available.  For the best test, we use .so's.
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_2 = gc_comdat_test.stdout \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	gc_tls_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	icf_test.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	two_file_shared.dbg \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	weak_plt_shared.so debug_msg.err \
@@ -347,7 +348,7 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
 @NATIVE_LINKER_FALSE@	$(am__DEPENDENCIES_1) \
 @NATIVE_LINKER_FALSE@	$(am__DEPENDENCIES_1)
 subdir = testsuite
-DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in ChangeLog
+DIST_COMMON = $(srcdir)/Makefile.am $(srcdir)/Makefile.in
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../config/depstand.m4 \
 	$(top_srcdir)/../config/gettext-sister.m4 \
@@ -2318,6 +2319,12 @@ uninstall-am: uninstall-info-am
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_comdat_test_1.o gc_comdat_test_2.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@gc_comdat_test.stdout: gc_comdat_test
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) -C gc_comdat_test > gc_comdat_test.stdout
+@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_tls_test.o: gc_tls_test.cc
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -g -o $@ $<
+@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_tls_test:gc_tls_test.o gcctestdir/ld
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_tls_test.o
+@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_tls_test.stdout: gc_tls_test
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) -C gc_tls_test > gc_tls_test.stdout
 @GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test.o: icf_test.cc 
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test: icf_test.o gcctestdir/ld

gold/testsuite/gc_tls_test.cc

@@ -0,0 +1,32 @@
+// gc_tls_test.cc -- a test case for gold
+
+// Copyright 2009 Free Software Foundation, Inc.
+// Written by Sriraman Tallam <tmsriram@google.com>.
+
+// This file is part of gold.
+
+// 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 this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+// MA 02110-1301, USA.
+
+// The goal of this program is to verify if tls sections are garbage
+// collected with --gc-sections.
+
+__thread int number;
+
+int main()
+{
+  return 0;
+}
+

gold/testsuite/gc_tls_test.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+# gc_tls_test.sh -- test -- gc + tls
+
+# Copyright 2009 Free Software Foundation, Inc.
+# Written by Sriraman Tallam <tmsriram@google.com>.
+
+# This file is part of gold.
+
+# 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 this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+# The goal of this program is to verify if tls sections are garbage
+# collected with --gc-sections.  File gc_tls_test.cc is in this test. 
+
+check()
+{
+    if grep -q "$2" "$1"
+    then
+        echo "Garbage collection failed to collect tls variable:"
+        echo "   $2"
+	exit 1
+    fi
+
+}
+
+check gc_tls_test.stdout "number"

gold/x86_64.cc

@@ -2119,7 +2119,6 @@ Target_x86_64::Relocate::relocate_tls(const Relocate_info<64, false>* relinfo,
       break;
 
     case elfcpp::R_X86_64_DTPOFF32:
-      gold_assert(tls_segment != NULL);
       if (optimized_type == tls::TLSOPT_TO_LE)
         {
           // This relocation type is used in debugging information.
@@ -2127,18 +2126,23 @@ Target_x86_64::Relocate::relocate_tls(const Relocate_info<64, false>* relinfo,
           // haven't seen a TLSLD reloc, then we assume we should not
           // optimize this reloc.
           if (this->saw_tls_block_reloc_)
-            value -= tls_segment->memsz();
+	    {
+              gold_assert(tls_segment != NULL);
+              value -= tls_segment->memsz();
+	    }
         }
       Relocate_functions<64, false>::rela32(view, value, addend);
       break;
 
     case elfcpp::R_X86_64_DTPOFF64:
-      gold_assert(tls_segment != NULL);
       if (optimized_type == tls::TLSOPT_TO_LE)
         {
           // See R_X86_64_DTPOFF32, just above, for why we test this.
           if (this->saw_tls_block_reloc_)
-            value -= tls_segment->memsz();
+	    {
+	      gold_assert(tls_segment != NULL);
+	      value -= tls_segment->memsz();
+	    }
         }
       Relocate_functions<64, false>::rela64(view, value, addend);
       break;