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i386.c (override_options): Disable red zone by default on i386.

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* i386.c (override_options):  Disable red zone by default on i386.
	(compute_frame_layout, ix86_force_to_memory, ix86_free_from_memory):
	Do not test TARGET_64BIT together with TARGET_RED_ZONE

From-SVN: r65178
This commit is contained in:
Jan Hubicka 2003-04-02 22:19:30 +00:00 • committed by Jan Hubicka
parent 8fc9a7ba7b
commit a5b378d6f7
2 changed files with 19 additions and 5 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
Thu Apr 3 00:18:49 CEST 2003 Jan HUbicka <jh@suse.cz>
* i386.c (override_options): Disable red zone by default on i386.
(compute_frame_layout, ix86_force_to_memory, ix86_free_from_memory):
Do not test TARGET_64BIT together with TARGET_RED_ZONE
2003-04-02 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md (a peephole2): Tighten the condition.

18
gcc/config/i386/i386.c
View file

@ -1380,7 +1380,13 @@ override_options ()
ix86_fpmath = FPMATH_SSE;
}
else
ix86_fpmath = FPMATH_387;
{
ix86_fpmath = FPMATH_387;
/* i386 ABI does not specify red zone. It still makes sense to use it
when programmer takes care to stack from being destroyed. */
if (!(target_flags_explicit & MASK_NO_RED_ZONE))
target_flags |= MASK_NO_RED_ZONE;
}
if (ix86_fpmath_string != 0)
{
@ -5026,7 +5032,7 @@ ix86_compute_frame_layout (frame)
if (!frame->to_allocate && frame->nregs <= 1)
frame->save_regs_using_mov = false;
if (TARGET_64BIT && TARGET_RED_ZONE && current_function_sp_is_unchanging
if (TARGET_RED_ZONE && current_function_sp_is_unchanging
&& current_function_is_leaf)
{
frame->red_zone_size = frame->to_allocate;
@ -6074,11 +6080,13 @@ legitimate_address_p (mode, addr, strict)
that never results in lea, this seems to be easier and
correct fix for crash to disable this test. */
}
#if 0
else if (!CONSTANT_ADDRESS_P (disp))
{
reason = "displacement is not constant";
goto report_error;
}
#endif
else if (TARGET_64BIT && !x86_64_sign_extended_value (disp))
{
reason = "displacement is out of range";
@ -14572,7 +14580,7 @@ ix86_force_to_memory (mode, operand)
rtx result;
if (!reload_completed)
abort ();
if (TARGET_64BIT && TARGET_RED_ZONE)
if (TARGET_RED_ZONE)
{
result = gen_rtx_MEM (mode,
gen_rtx_PLUS (Pmode,
@ -14580,7 +14588,7 @@ ix86_force_to_memory (mode, operand)
GEN_INT (-RED_ZONE_SIZE)));
emit_move_insn (result, operand);
}
else if (TARGET_64BIT && !TARGET_RED_ZONE)
else if (!TARGET_RED_ZONE && TARGET_64BIT)
{
switch (mode)
{
@ -14649,7 +14657,7 @@ void
ix86_free_from_memory (mode)
enum machine_mode mode;
{
if (!TARGET_64BIT || !TARGET_RED_ZONE)
if (!TARGET_RED_ZONE)
{
int size;