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i386.h (BIGGEST_FIELD_ALIGNMENT): Set proper default for x86_64.

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* i386.h (BIGGEST_FIELD_ALIGNMENT): Set proper default for x86_64.

	* i386.c (overwrite_options): Set -mpreferred-stack-boundary to 128
	for -Os/TARGET_64BIT too.

From-SVN: r57399
This commit is contained in:
Jan Hubicka 2002-09-22 05:15:38 +02:00 committed by Jan Hubicka
parent da7d830409
commit ef49d42ece
3 changed files with 16 additions and 3 deletions
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9
gcc/ChangeLog
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@ -1,3 +1,12 @@
Tue Aug 27 22:26:35 CEST 2002 Jan Hubicka <jh@suse.cz>
* i386.h (BIGGEST_FIELD_ALIGNMENT): Set proper default for x86_64.
Tue Aug 27 20:07:01 CEST 2002 Jan Hubicka <jh@suse.cz>
* i386.c (overwrite_options): Set -mpreferred-stack-boundary to 128
for -Os/TARGET_64BIT too.
2002-09-21 Kazu Hirata <kazu@cs.umass.edu>
* ChangeLog: Follow spelling conventions.

6
gcc/config/i386/i386.c
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@ -1120,14 +1120,14 @@ override_options ()
don't want additional code to keep the stack aligned when
optimizing for code size. */
ix86_preferred_stack_boundary = (optimize_size
? TARGET_64BIT ? 64 : 32
? TARGET_64BIT ? 128 : 32
: 128);
if (ix86_preferred_stack_boundary_string)
{
i = atoi (ix86_preferred_stack_boundary_string);
if (i < (TARGET_64BIT ? 3 : 2) || i > 12)
if (i < (TARGET_64BIT ? 4 : 2) || i > 12)
error ("-mpreferred-stack-boundary=%d is not between %d and 12", i,
TARGET_64BIT ? 3 : 2);
TARGET_64BIT ? 4 : 2);
else
ix86_preferred_stack_boundary = (1 << i) * BITS_PER_UNIT;
}

4
gcc/config/i386/i386.h
View File

@ -729,7 +729,11 @@ extern int x86_prefetch_sse;
supports no vector modes, cut out the complexity and fall back
on BIGGEST_FIELD_ALIGNMENT. */
#ifdef IN_TARGET_LIBS
#ifdef __x86_64__
#define BIGGEST_FIELD_ALIGNMENT 128
#else
#define BIGGEST_FIELD_ALIGNMENT 32
#endif
#else
#define ADJUST_FIELD_ALIGN(FIELD, COMPUTED) \
x86_field_alignment (FIELD, COMPUTED)