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varasm.c (assemble_variable): Use assemble_zeros for zero-initialized variables.

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* varasm.c (assemble_variable): Use assemble_zeros for
        zero-initialized variables.
        (categorize_decl_for_section): Honor flag_zero_initialized_in_bss
        for SECCAT_BSS and SECCAT_TBSS.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r84271
This commit is contained in:
Jan Beulich 2004-07-08 06:26:08 +00:00 committed by Richard Henderson
parent 78a47b1d2e
commit 08a8c6b65b
2 changed files with 25 additions and 7 deletions
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16
gcc/ChangeLog
View File

@ -1,9 +1,17 @@
2004-07-06 Jan Beulich <jbeulich@novell.com>
2004-07-07 Jan Beulich <jbeulich@novell.com>
Richard Henderson <rth@redhat.com>
* varasm.c (assemble_variable): Use assemble_zeros for
zero-initialized variables.
(categorize_decl_for_section): Honor flag_zero_initialized_in_bss
for SECCAT_BSS and SECCAT_TBSS.
2004-07-07 Jan Beulich <jbeulich@novell.com>
* varasm.c (asm_output_bss): Don't declare unless BSS_SECTION_ASM_OP.
* expmed.c (emit_store_flag): Also special-case double-word
(in-)equality comparison against -1.
* expmed.c (emit_store_flag): Also special-case double-word
(in-)equality comparison against -1.
* config/i386/i386.c (ix86_gimplify_va_arg): Don't need temporary for
passing arguments the containers for which are registers.

16
gcc/varasm.c
View File

@ -1563,7 +1563,9 @@ assemble_variable (tree decl, int top_level ATTRIBUTE_UNUSED,
if (!dont_output_data)
{
if (DECL_INITIAL (decl) && DECL_INITIAL (decl) != error_mark_node)
if (DECL_INITIAL (decl)
&& DECL_INITIAL (decl) != error_mark_node
&& !initializer_zerop (DECL_INITIAL (decl)))
/* Output the actual data. */
output_constant (DECL_INITIAL (decl),
tree_low_cst (DECL_SIZE_UNIT (decl), 1),
@ -4611,7 +4613,11 @@ categorize_decl_for_section (tree decl, int reloc, int shlib)
else if (TREE_CODE (decl) == VAR_DECL)
{
if (DECL_INITIAL (decl) == NULL
|| DECL_INITIAL (decl) == error_mark_node)
|| DECL_INITIAL (decl) == error_mark_node
|| (flag_zero_initialized_in_bss
/* Leave constant zeroes in .rodata so they can be shared. */
&& !TREE_READONLY (decl)
&& initializer_zerop (DECL_INITIAL (decl))))
ret = SECCAT_BSS;
else if (! TREE_READONLY (decl)
|| TREE_SIDE_EFFECTS (decl)
@ -4653,7 +4659,11 @@ categorize_decl_for_section (tree decl, int reloc, int shlib)
/* There are no read-only thread-local sections. */
if (TREE_CODE (decl) == VAR_DECL && DECL_THREAD_LOCAL (decl))
{
if (ret == SECCAT_BSS)
/* Note that this would be *just* SECCAT_BSS, except that there's
no concept of a read-only thread-local-data section. */
if (ret == SECCAT_BSS
|| (flag_zero_initialized_in_bss
&& initializer_zerop (DECL_INITIAL (decl))))
ret = SECCAT_TBSS;
else
ret = SECCAT_TDATA;