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riscv: Cache the max alignment of output sections

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Cache the max alignment of output sections instead of scanning all
output sections for each input section, which can take a very long
time if there are millions of input/output sections.

	PR ld/22274
	* elfnn-riscv.c (riscv_elf_link_hash_table): Add max_alignment.
	(riscv_elf_link_hash_table_create): Initialize max_alignment to
	(bfd_vma) -1.
	(_bfd_riscv_relax_section): Cache the max alignment of output
	sections if possible.
This commit is contained in:
H.J. Lu 2017-10-09 22:03:42 -07:00
parent b9399fcf4e
commit fc3c534364
2 changed files with 24 additions and 1 deletions
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9
bfd/ChangeLog
View File

@ -1,3 +1,12 @@
2017-10-09 H.J. Lu <hongjiu.lu@intel.com>
PR ld/22274
* elfnn-riscv.c (riscv_elf_link_hash_table): Add max_alignment.
(riscv_elf_link_hash_table_create): Initialize max_alignment to
(bfd_vma) -1.
(_bfd_riscv_relax_section): Cache the max alignment of output
sections if possible.
2017-10-10 Alan Modra <amodra@gmail.com>
* elf64-ppc.c (ppc64_elf_before_check_relocs): Set sec_type for

16
bfd/elfnn-riscv.c
View File

@ -127,6 +127,9 @@ struct riscv_elf_link_hash_table
/* Small local sym to section mapping cache. */
struct sym_cache sym_cache;
/* The max alignment of output sections. */
bfd_vma max_alignment;
};
@ -274,6 +277,7 @@ riscv_elf_link_hash_table_create (bfd *abfd)
return NULL;
}
ret->max_alignment = (bfd_vma) -1;
return &ret->elf.root;
}
@ -3070,7 +3074,17 @@ _bfd_riscv_relax_section (bfd *abfd, asection *sec,
info->keep_memory)))
goto fail;
max_alignment = _bfd_riscv_get_max_alignment (sec);
if (htab)
{
max_alignment = htab->max_alignment;
if (max_alignment == (bfd_vma) -1)
{
max_alignment = _bfd_riscv_get_max_alignment (sec);
htab->max_alignment = max_alignment;
}
}
else
max_alignment = _bfd_riscv_get_max_alignment (sec);
/* Examine and consider relaxing each reloc. */
for (i = 0; i < sec->reloc_count; i++)