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i386.c (override_options): Replace ABI_STACK_BOUNDARY with MIN_STACK_BOUNDARY.

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2008-08-01  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (override_options): Replace ABI_STACK_BOUNDARY
	with MIN_STACK_BOUNDARY.
	(ix86_update_stack_boundary): Likewise.
	(ix86_expand_prologue): Assert MIN_STACK_BOUNDARY instead of
	STACK_BOUNDARY.

	* config/i386/i386.h (ABI_STACK_BOUNDARY): Renamed to ...
	(MIN_STACK_BOUNDARY): This.

From-SVN: r138517
This commit is contained in:
H.J. Lu 2008-08-01 06:30:03 -07:00
parent 62bb3fdb86
commit de1132d194
2 changed files with 8 additions and 8 deletions
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10
gcc/config/i386/i386.c
View File

@ -3045,9 +3045,9 @@ override_options (bool main_args_p)
ix86_force_align_arg_pointer = STACK_REALIGN_DEFAULT;
/* Validate -mincoming-stack-boundary= value or default it to
ABI_STACK_BOUNDARY/PREFERRED_STACK_BOUNDARY. */
MIN_STACK_BOUNDARY/PREFERRED_STACK_BOUNDARY. */
if (ix86_force_align_arg_pointer)
ix86_default_incoming_stack_boundary = ABI_STACK_BOUNDARY;
ix86_default_incoming_stack_boundary = MIN_STACK_BOUNDARY;
else
ix86_default_incoming_stack_boundary = PREFERRED_STACK_BOUNDARY;
ix86_incoming_stack_boundary = ix86_default_incoming_stack_boundary;
@ -7520,10 +7520,10 @@ ix86_update_stack_boundary (void)
/* Incoming stack alignment can be changed on individual functions
via force_align_arg_pointer attribute. We use the smallest
incoming stack boundary. */
if (ix86_incoming_stack_boundary > ABI_STACK_BOUNDARY
if (ix86_incoming_stack_boundary > MIN_STACK_BOUNDARY
&& lookup_attribute (ix86_force_align_arg_pointer_string,
TYPE_ATTRIBUTES (TREE_TYPE (current_function_decl))))
ix86_incoming_stack_boundary = ABI_STACK_BOUNDARY;
ix86_incoming_stack_boundary = MIN_STACK_BOUNDARY;
/* Stack at entrance of main is aligned by runtime. We use the
smallest incoming stack boundary. */
@ -7710,7 +7710,7 @@ ix86_expand_prologue (void)
if (stack_realign_fp)
{
int align_bytes = crtl->stack_alignment_needed / BITS_PER_UNIT;
gcc_assert (align_bytes > STACK_BOUNDARY / BITS_PER_UNIT);
gcc_assert (align_bytes > MIN_STACK_BOUNDARY / BITS_PER_UNIT);
/* Align the stack. */
insn = emit_insn ((*ix86_gen_andsp) (stack_pointer_rtx,

6
gcc/config/i386/i386.h
View File

@ -651,14 +651,14 @@ enum target_cpu_default
/* Stack boundary of the main function guaranteed by OS. */
#define MAIN_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32)
/* Stack boundary guaranteed by ABI. */
#define ABI_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32)
/* Minimum stack boundary. */
#define MIN_STACK_BOUNDARY (TARGET_64BIT ? 128 : 32)
/* Boundary (in *bits*) on which the stack pointer prefers to be
aligned; the compiler cannot rely on having this alignment. */
#define PREFERRED_STACK_BOUNDARY ix86_preferred_stack_boundary
/* It should be ABI_STACK_BOUNDARY. But we set it to 128 bits for
/* It should be MIN_STACK_BOUNDARY. But we set it to 128 bits for
both 32bit and 64bit, to support codes that need 128 bit stack
alignment for SSE instructions, but can't realign the stack. */
#define PREFERRED_STACK_BOUNDARY_DEFAULT 128