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varasm.c (assemble_variable): Don't overalign if DECL_USER_ALIGN.

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* varasm.c (assemble_variable): Don't overalign if DECL_USER_ALIGN.
        * crtstuff.c (__CTOR_LIST__, __DTOR_LIST__, __EH_FRAME_BEGIN__,
        __JCR_LIST__, __CTOR_END__, __DTOR_END__, __FRAME_END__,__JCR_END__):
        Add aligned attribute.

From-SVN: r44966
This commit is contained in:
Richard Henderson 2001-08-17 11:28:06 -07:00
parent d1356866eb
commit 51084e13c0
3 changed files with 37 additions and 17 deletions
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9
gcc/ChangeLog
View File

@ -1,4 +1,11 @@
2001-08-10 Andrew Haley <aph@cambridge.redhat.com>
2001-08-17 Richard Henderson <rth@redhat.com>
* varasm.c (assemble_variable): Don't overalign if DECL_USER_ALIGN.
* crtstuff.c (__CTOR_LIST__, __DTOR_LIST__, __EH_FRAME_BEGIN__,
__JCR_LIST__, __CTOR_END__, __DTOR_END__, __FRAME_END__,__JCR_END__):
Add aligned attribute.
2001-08-17 Andrew Haley <aph@cambridge.redhat.com>
* config/sh/sh.md: Add modes to unspecs in first insn to match
those in the second.

36
gcc/crtstuff.c
View File

@ -369,12 +369,12 @@ CTOR_LIST_BEGIN;
static func_ptr force_to_data[1] __attribute__ ((__unused__)) = { };
asm (CTORS_SECTION_ASM_OP);
STATIC func_ptr __CTOR_LIST__[1]
__attribute__ ((__unused__))
__attribute__ ((__unused__, aligned(sizeof(func_ptr))))
= { (func_ptr) (-1) };
#else
STATIC func_ptr __CTOR_LIST__[1]
__attribute__ ((__unused__, section(".ctors")))
__attribute__ ((__unused__, section(".ctors"), aligned(sizeof(func_ptr))))
= { (func_ptr) (-1) };
#endif
@ -383,10 +383,12 @@ STATIC func_ptr __CTOR_LIST__[1]
DTOR_LIST_BEGIN;
#elif defined(DTORS_SECTION_ASM_OP)
asm (DTORS_SECTION_ASM_OP);
STATIC func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) };
STATIC func_ptr __DTOR_LIST__[1]
__attribute__ ((aligned(sizeof(func_ptr))))
= { (func_ptr) (-1) };
#else
STATIC func_ptr __DTOR_LIST__[1]
__attribute__((section(".dtors")))
__attribute__((section(".dtors"), aligned(sizeof(func_ptr))))
= { (func_ptr) (-1) };
#endif
@ -397,7 +399,7 @@ STATIC func_ptr __DTOR_LIST__[1]
STATIC
#endif
char __EH_FRAME_BEGIN__[]
__attribute__((section(EH_FRAME_SECTION_NAME)))
__attribute__((section(EH_FRAME_SECTION_NAME), aligned(4)))
= { };
#endif /* EH_FRAME_SECTION_NAME */
@ -405,7 +407,8 @@ char __EH_FRAME_BEGIN__[]
/* Stick a label at the beginning of the java class registration info
so we can register them properly. */
STATIC void *__JCR_LIST__[] __attribute__ ((unused, section(JCR_SECTION_NAME)))
STATIC void *__JCR_LIST__[]
__attribute__ ((unused, section(JCR_SECTION_NAME), aligned(sizeof(func_ptr))))
= { 0 };
#endif /* JCR_SECTION_NAME */
@ -533,11 +536,13 @@ CTOR_LIST_END;
__CTOR_LIST__ does not undo our behind-the-back change to .ctors. */
static func_ptr force_to_data[1] __attribute__ ((__unused__)) = { };
asm (CTORS_SECTION_ASM_OP);
STATIC func_ptr __CTOR_END__[1] = { (func_ptr) 0 };
STATIC func_ptr __CTOR_END__[1]
__attribute__((aligned(sizeof(func_ptr))))
= { (func_ptr) 0 };
#else
STATIC func_ptr __CTOR_END__[1]
__attribute__((section(".ctors")))
__attribute__((section(".ctors"), aligned(sizeof(func_ptr))))
= { (func_ptr) 0 };
#endif
@ -545,11 +550,12 @@ STATIC func_ptr __CTOR_END__[1]
DTOR_LIST_END;
#elif defined(DTORS_SECTION_ASM_OP)
asm (DTORS_SECTION_ASM_OP);
STATIC func_ptr __DTOR_END__[1] __attribute__ ((unused))
STATIC func_ptr __DTOR_END__[1]
__attribute__ ((unused, aligned(sizeof(func_ptr))))
= { (func_ptr) 0 };
#else
STATIC func_ptr __DTOR_END__[1]
__attribute__((unused, section(".dtors")))
__attribute__((unused, section(".dtors"), aligned(sizeof(func_ptr))))
= { (func_ptr) 0 };
#endif
@ -557,7 +563,8 @@ STATIC func_ptr __DTOR_END__[1]
/* Terminate the frame unwind info section with a 4byte 0 as a sentinel;
this would be the 'length' field in a real FDE. */
STATIC int __FRAME_END__[]
__attribute__ ((unused, mode(SI), section(EH_FRAME_SECTION_NAME)))
__attribute__ ((unused, mode(SI), section(EH_FRAME_SECTION_NAME),
aligned(4)))
= { 0 };
#endif /* EH_FRAME_SECTION */
@ -566,7 +573,9 @@ STATIC int __FRAME_END__[]
so we can register them properly. */
STATIC void *__JCR_END__[1]
__attribute__ ((unused, section(JCR_SECTION_NAME))) = { 0 };
__attribute__ ((unused, section(JCR_SECTION_NAME),
aligned(sizeof(func_ptr))))
= { 0 };
#endif /* JCR_SECTION_NAME */
#endif /* defined(CRT_END) */
@ -627,7 +636,8 @@ __dereg_frame_dtor (void)
/* Terminate the frame section with a final zero. */
STATIC int __FRAME_END__[]
__attribute__ ((unused, mode(SI), section(EH_FRAME_SECTION_NAME)))
__attribute__ ((unused, mode(SI), section(EH_FRAME_SECTION_NAME),
aligned(4)))
= { 0 };
#endif /* CRT_END */

9
gcc/varasm.c
View File

@ -1474,13 +1474,16 @@ assemble_variable (decl, top_level, at_end, dont_output_data)
}
/* On some machines, it is good to increase alignment sometimes. */
if (! DECL_USER_ALIGN (decl))
{
#ifdef DATA_ALIGNMENT
align = DATA_ALIGNMENT (TREE_TYPE (decl), align);
align = DATA_ALIGNMENT (TREE_TYPE (decl), align);
#endif
#ifdef CONSTANT_ALIGNMENT
if (DECL_INITIAL (decl) != 0 && DECL_INITIAL (decl) != error_mark_node)
align = CONSTANT_ALIGNMENT (DECL_INITIAL (decl), align);
if (DECL_INITIAL (decl) != 0 && DECL_INITIAL (decl) != error_mark_node)
align = CONSTANT_ALIGNMENT (DECL_INITIAL (decl), align);
#endif
}
/* Reset the alignment in case we have made it tighter, so we can benefit
from it in get_pointer_alignment. */