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2013-04-29 Alexander Ivchenko <alexander.ivchenko@intel.com>

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	* output.cc (Output_section::add_merge_input_section): Allow
	to merge sections if the alignment is more than character size.
	* merge.h (Output_merge_string::Output_merge_string): Remove
	assert.
	* merge.cc (Output_merge_string<Char_type>::do_add_input_section): Count
	only not-null strings. Check the alignment of strings.
	* stringpool.h
	(Stringpool_template<Stringpool_char>::Stringpool_template): Add
	alignment as the argument.
	(Stringpool_template<Stringpool_char>::addralign_): New class member.
	* stringpool.cc (Stringpool_template<Stringpool_char>::new_key_offset):
	Align non-zero length strings according to the addralign_.
	(Stringpool_template<Stringpool_char>::set_string_offsets):
	Updating offsets according to the given alignment.
	* testsuite/Makefile.am (text_section_grouping): Test if string
	literals are getting merged.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/merge_string_literals_1.c: New file.
	* testsuite/merge_string_literals_2.c: Ditto.
	* testsuite/merge_string_literals.sh: Ditto.
This commit is contained in:
Cary Coutant
2013-04-29 17:15:09 +00:00
parent 5dad867cca
commit e31908b642
11 changed files with 194 additions and 20 deletions
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5
gold/output.cc
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@ -2635,11 +2635,6 @@ Output_section::add_merge_input_section(Relobj* object, unsigned int shndx,
{
bool is_string = (flags & elfcpp::SHF_STRINGS) != 0;
// We only merge strings if the alignment is not more than the
// character size. This could be handled, but it's unusual.
if (is_string && addralign > entsize)
return false;
// We cannot restore merged input section states.
gold_assert(this->checkpoint_ == NULL);