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avr.h (AVR_HAVE_8BIT_SP): New macros.

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* config/avr/avr.h (AVR_HAVE_8BIT_SP): New macros.
	* config/avr/avr.c (avr_override_options): Initialize
	avr_current_arch variable.
	(avr_cpu_cpp_builtins): Define __AVR_HAVE_8BIT_SP__ or
	__AVR_HAVE_16BIT_SP__ according to the device type.
	(expand_prologue, output_movhi): Use AVR_HAVE_8BIT_SP instead of
	TARGET_TINY_STACK.
	(expand_epilogue): Use correct QI mode frame pointer for tiny stack.
	Use AVR_HAVE_8BIT_SP instead of TARGET_TINY_STACK.

From-SVN: r150801
This commit is contained in:
Anatoly Sokolov 2009-08-16 20:22:59 +04:00 • committed by Anatoly Sokolov
parent 354ebf88ee
commit 164709cfe6
3 changed files with 28 additions and 8 deletions
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12
gcc/ChangeLog
View file

@ -1,3 +1,15 @@
2009-08-16 Anatoly Sokolov <aesok@post.ru>
* config/avr/avr.h (AVR_HAVE_8BIT_SP): New macros.
* config/avr/avr.c (avr_override_options): Initialize
avr_current_arch variable.
(avr_cpu_cpp_builtins): Define __AVR_HAVE_8BIT_SP__ or
__AVR_HAVE_16BIT_SP__ according to the device type.
(expand_prologue, output_movhi): Use AVR_HAVE_8BIT_SP instead of
TARGET_TINY_STACK.
(expand_epilogue): Use correct QI mode frame pointer for tiny stack.
Use AVR_HAVE_8BIT_SP instead of TARGET_TINY_STACK.
2009-08-16 Dodji Seketeli <dodji@redhat.com>
PR debug/37801

23
gcc/config/avr/avr.c
View file

@ -213,8 +213,9 @@ avr_override_options (void)
fprintf (stderr," %s\n", t->name);
}
avr_current_arch = &avr_arch_types[t->arch];
avr_extra_arch_macro = t->macro;
avr_current_device = t;
avr_current_arch = &avr_arch_types[avr_current_device->arch];
avr_extra_arch_macro = avr_current_device->macro;
tmp_reg_rtx = gen_rtx_REG (QImode, TMP_REGNO);
zero_reg_rtx = gen_rtx_REG (QImode, ZERO_REGNO);
@ -265,6 +266,12 @@ avr_cpu_cpp_builtins (struct cpp_reader *pfile)
{
cpp_define (pfile, "__AVR_2_BYTE_PC__");
}
if (avr_current_device->short_sp)
cpp_define (pfile, "__AVR_HAVE_8BIT_SP__");
else
cpp_define (pfile, "__AVR_HAVE_16BIT_SP__");
if (TARGET_NO_INTERRUPTS)
cpp_define (pfile, "__NO_INTERRUPTS__");
}
@ -672,7 +679,7 @@ expand_prologue (void)
rtx fp_plus_insns;
rtx sp_plus_insns = NULL_RTX;
if (TARGET_TINY_STACK)
if (AVR_HAVE_8BIT_SP)
{
/* The high byte (r29) doesn't change - prefer 'subi' (1 cycle)
over 'sbiw' (2 cycles, same size). */
@ -698,7 +705,7 @@ expand_prologue (void)
RTX_FRAME_RELATED_P (insn) = 1;
/* Copy to stack pointer. */
if (TARGET_TINY_STACK)
if (AVR_HAVE_8BIT_SP)
{
insn = emit_move_insn (stack_pointer_rtx, frame_pointer_rtx);
RTX_FRAME_RELATED_P (insn) = 1;
@ -852,7 +859,7 @@ expand_epilogue (void)
rtx fp_plus_insns;
rtx sp_plus_insns = NULL_RTX;
if (TARGET_TINY_STACK)
if (AVR_HAVE_8BIT_SP)
{
/* The high byte (r29) doesn't change - prefer 'subi'
(1 cycle) over 'sbiw' (2 cycles, same size). */
@ -868,12 +875,12 @@ expand_epilogue (void)
start_sequence ();
emit_move_insn (myfp,
gen_rtx_PLUS (HImode, myfp,
gen_rtx_PLUS (GET_MODE (myfp), myfp,
gen_int_mode (size,
GET_MODE(myfp))));
/* Copy to stack pointer. */
if (TARGET_TINY_STACK)
if (AVR_HAVE_8BIT_SP)
{
emit_move_insn (stack_pointer_rtx, frame_pointer_rtx);
}
@ -1686,7 +1693,7 @@ output_movhi (rtx insn, rtx operands[], int *l)
{
if (test_hard_reg_class (STACK_REG, dest))
{
if (TARGET_TINY_STACK)
if (AVR_HAVE_8BIT_SP)
return *l = 1, AS2 (out,__SP_L__,%A1);
/* Use simple load of stack pointer if no interrupts are
used. */

1
gcc/config/avr/avr.h
View file

@ -114,6 +114,7 @@ extern GTY(()) section *progmem_section;
#define AVR_HAVE_LPMX (avr_current_arch->have_movw_lpmx)
#define AVR_HAVE_RAMPZ (avr_current_arch->have_elpm)
#define AVR_HAVE_EIJMP_EICALL (avr_current_arch->have_eijmp_eicall)
#define AVR_HAVE_8BIT_SP (avr_current_device->short_sp || TARGET_TINY_STACK)
#define AVR_2_BYTE_PC (!AVR_HAVE_EIJMP_EICALL)
#define AVR_3_BYTE_PC (AVR_HAVE_EIJMP_EICALL)