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rs6000.c (IN_NAMED_SECTION): New macro. 

* config/rs6000/rs6000.c (IN_NAMED_SECTION): New macro.
	(rs6000_xcoff_select_section): Place decls with stricter alignment
	into named sections.
	(rs6000_xcoff_unique_section): Allow unique sections for
	uninitialized data with strict alignment.

From-SVN: r205308
This commit is contained in:
David Edelsohn 2013-11-23 15:25:09 +00:00 committed by David Edelsohn
parent e07ded7bf9
commit cf77a18016
2 changed files with 26 additions and 3 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2013-11-23 David Edelsohn <dje.gcc@gmail.com>
* config/rs6000/rs6000.c (IN_NAMED_SECTION): New macro.
(rs6000_xcoff_select_section): Place decls with stricter alignment
into named sections.
(rs6000_xcoff_unique_section): Allow unique sections for
uninitialized data with strict alignment.
2013-11-23 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/59154

21
gcc/config/rs6000/rs6000.c
View File

@ -28588,10 +28588,23 @@ rs6000_xcoff_asm_named_section (const char *name, unsigned int flags,
name, suffix[smclass], flags & SECTION_ENTSIZE);
}
#define IN_NAMED_SECTION(DECL) \
((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL) \
&& DECL_SECTION_NAME (DECL) != NULL_TREE)
static section *
rs6000_xcoff_select_section (tree decl, int reloc,
unsigned HOST_WIDE_INT align ATTRIBUTE_UNUSED)
unsigned HOST_WIDE_INT align)
{
/* Place variables with alignment stricter than BIGGEST_ALIGNMENT into
named section. */
if (align > BIGGEST_ALIGNMENT)
{
resolve_unique_section (decl, reloc, true);
if (IN_NAMED_SECTION (decl))
return get_named_section (decl, NULL, reloc);
}
if (decl_readonly_section (decl, reloc))
{
if (TREE_PUBLIC (decl))
@ -28629,10 +28642,12 @@ rs6000_xcoff_unique_section (tree decl, int reloc ATTRIBUTE_UNUSED)
{
const char *name;
/* Use select_section for private and uninitialized data. */
/* Use select_section for private data and uninitialized data with
alignment <= BIGGEST_ALIGNMENT. */
if (!TREE_PUBLIC (decl)
|| DECL_COMMON (decl)
|| DECL_INITIAL (decl) == NULL_TREE
|| (DECL_INITIAL (decl) == NULL_TREE
&& DECL_ALIGN (decl) <= BIGGEST_ALIGNMENT)
|| DECL_INITIAL (decl) == error_mark_node
|| (flag_zero_initialized_in_bss
&& initializer_zerop (DECL_INITIAL (decl))))