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re PR other/29639 (ext/bitmap_allocator/check_allocate_max_size.cc execution test) 

PR other/29639
	* configure.ac (HAVE_LD_EH_GC_SECTIONS): Check that exception tables
	are kept for .gnu.linkonce.t sections if COMDAT groups are disabled.
	* configure: Regenerate.

From-SVN: r120121
This commit is contained in:
Eric Botcazou 2006-12-21 22:10:30 +00:00 committed by Eric Botcazou
parent 5f7fc2b832
commit e9d207d9ac
3 changed files with 79 additions and 0 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2006-12-21 Eric Botcazou <ebotcazou@adacore.com>
PR other/29639
* configure.ac (HAVE_LD_EH_GC_SECTIONS): Check that exception tables
are kept for .gnu.linkonce.t sections if COMDAT groups are disabled.
* configure: Regenerate.
2006-12-21 Joseph Myers <joseph@codesourcery.com> 2006-12-21 Joseph Myers <joseph@codesourcery.com>
* rtlanal.c (subreg_get_info): Do not make register size * rtlanal.c (subreg_get_info): Do not make register size

36
gcc/configure vendored
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@ -16053,10 +16053,46 @@ EOF
gcc_cv_ld_eh_gc_sections=no gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes gcc_cv_ld_eh_gc_sections=yes
# If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
if test x$gcc_cv_as_comdat_group != xyes; then
gcc_cv_ld_eh_gc_sections=no
cat > conftest.s <<EOF
.section .text
.globl _start
.type _start, @function
_start:
.long foo
.size _start, .-_start
.section .gnu.linkonce.t.foo,"ax",@progbits
.type foo, @function
foo:
.long 0
.size foo, .-foo
.section .gcc_except_table.foo,"a",@progbits
.L0:
.long 0
.section .eh_frame,"a",@progbits
.long .L0
EOF
if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
fi
fi
fi
fi fi
fi fi
rm -f conftest.s conftest.o conftest rm -f conftest.s conftest.o conftest
fi fi
case "$target" in
hppa*-*-linux*)
# ??? This apparently exposes a binutils bug with PC-relative relocations.
gcc_cv_ld_eh_gc_sections=no
;;
esac
if test x$gcc_cv_ld_eh_gc_sections = xyes; then if test x$gcc_cv_ld_eh_gc_sections = xyes; then
cat >>confdefs.h <<\_ACEOF cat >>confdefs.h <<\_ACEOF

36
gcc/configure.ac
View File

@ -3192,10 +3192,46 @@ EOF
gcc_cv_ld_eh_gc_sections=no gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes gcc_cv_ld_eh_gc_sections=yes
# If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections.
if test x$gcc_cv_as_comdat_group != xyes; then
gcc_cv_ld_eh_gc_sections=no
cat > conftest.s <<EOF
.section .text
.globl _start
.type _start, @function
_start:
.long foo
.size _start, .-_start
.section .gnu.linkonce.t.foo,"ax",@progbits
.type foo, @function
foo:
.long 0
.size foo, .-foo
.section .gcc_except_table.foo,"a",@progbits
.L0:
.long 0
.section .eh_frame,"a",@progbits
.long .L0
EOF
if $gcc_cv_as -o conftest.o conftest.s > /dev/null 2>&1; then
if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \
| grep "gc-sections option ignored" > /dev/null; then
gcc_cv_ld_eh_gc_sections=no
elif $gcc_cv_objdump -h conftest | grep gcc_except_table > /dev/null; then
gcc_cv_ld_eh_gc_sections=yes
fi
fi
fi
fi fi
fi fi
rm -f conftest.s conftest.o conftest rm -f conftest.s conftest.o conftest
fi fi
case "$target" in
hppa*-*-linux*)
# ??? This apparently exposes a binutils bug with PC-relative relocations.
gcc_cv_ld_eh_gc_sections=no
;;
esac
if test x$gcc_cv_ld_eh_gc_sections = xyes; then if test x$gcc_cv_ld_eh_gc_sections = xyes; then
AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1,
[Define if your linker supports garbage collection of [Define if your linker supports garbage collection of