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[AArch64] Add support for TARGET_COMPUTE_FRAME_LAYOUT

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The patch adds support for the TARGET_COMPUTE_FRAME_LAYOUT hook on AArch64
and removes unneeded frame layout recalculation.

2018-09-13  Vlad Lazar  <vlad.lazar@arm.com>

	* config/aarch64/aarch64.h (TARGET_COMPUTE_FRAME_LAYOUT): Define.
	* config/aarch64/aarch64.c (aarch64_expand_prologue): Remove
	aarch64_layout_frame call.
	(aarch64_expand_epilogue): Likewise.
	(aarch64_initial_elimination_offset): Likewise.
	(aarch64_get_separate_components): Likewise.
	(aarch64_use_return_insn_p): Likewise.
	(aarch64_layout_frame): Remove unneeded check.

From-SVN: r264263
This commit is contained in:
Vlad Lazar 2018-09-13 09:36:58 +00:00 • committed by Vlad Lazar
parent 54de7d7dd0
commit 0795f659b0
3 changed files with 15 additions and 14 deletions
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11
gcc/ChangeLog
View file

@ -1,3 +1,14 @@
2018-09-13 Vlad Lazar <vlad.lazar@arm.com>
* config/aarch64/aarch64.h (TARGET_COMPUTE_FRAME_LAYOUT): Define.
* config/aarch64/aarch64.c (aarch64_expand_prologue): Remove
aarch64_layout_frame call.
(aarch64_expand_epilogue): Likewise.
(aarch64_initial_elimination_offset): Likewise.
(aarch64_get_separate_components): Likewise.
(aarch64_use_return_insn_p): Likewise.
(aarch64_layout_frame): Remove unneeded check.
2018-09-13 Jakub Jelinek <jakub@redhat.com>
* configure.ac: Only append

15
gcc/config/aarch64/aarch64.c
View file

@ -3938,9 +3938,6 @@ aarch64_layout_frame (void)
HOST_WIDE_INT offset = 0;
int regno, last_fp_reg = INVALID_REGNUM;
if (reload_completed && cfun->machine->frame.laid_out)
return;
cfun->machine->frame.emit_frame_chain = aarch64_needs_frame_chain ();
#define SLOT_NOT_REQUIRED (-2)
@ -4484,8 +4481,6 @@ offset_12bit_unsigned_scaled_p (machine_mode mode, poly_int64 offset)
static sbitmap
aarch64_get_separate_components (void)
{
aarch64_layout_frame ();
sbitmap components = sbitmap_alloc (LAST_SAVED_REGNUM + 1);
bitmap_clear (components);
@ -4509,7 +4504,7 @@ aarch64_get_separate_components (void)
unsigned reg1 = cfun->machine->frame.wb_candidate1;
unsigned reg2 = cfun->machine->frame.wb_candidate2;
/* If aarch64_layout_frame has chosen registers to store/restore with
/* If registers have been chosen to be stored/restored with
writeback don't interfere with them to avoid having to output explicit
stack adjustment instructions. */
if (reg2 != INVALID_REGNUM)
@ -4767,8 +4762,6 @@ aarch64_add_cfa_expression (rtx_insn *insn, unsigned int reg,
void
aarch64_expand_prologue (void)
{
aarch64_layout_frame ();
poly_int64 frame_size = cfun->machine->frame.frame_size;
poly_int64 initial_adjust = cfun->machine->frame.initial_adjust;
HOST_WIDE_INT callee_adjust = cfun->machine->frame.callee_adjust;
@ -4881,8 +4874,6 @@ aarch64_use_return_insn_p (void)
if (crtl->profile)
return false;
aarch64_layout_frame ();
return known_eq (cfun->machine->frame.frame_size, 0);
}
@ -4894,8 +4885,6 @@ aarch64_use_return_insn_p (void)
void
aarch64_expand_epilogue (bool for_sibcall)
{
aarch64_layout_frame ();
poly_int64 initial_adjust = cfun->machine->frame.initial_adjust;
HOST_WIDE_INT callee_adjust = cfun->machine->frame.callee_adjust;
poly_int64 final_adjust = cfun->machine->frame.final_adjust;
@ -7414,8 +7403,6 @@ aarch64_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
poly_int64
aarch64_initial_elimination_offset (unsigned from, unsigned to)
{
aarch64_layout_frame ();
if (to == HARD_FRAME_POINTER_REGNUM)
{
if (from == ARG_POINTER_REGNUM)

3
gcc/config/aarch64/aarch64.h
View file

@ -480,6 +480,9 @@ extern unsigned aarch64_architecture_version;
#undef DONT_USE_BUILTIN_SETJMP
#define DONT_USE_BUILTIN_SETJMP 1
#undef TARGET_COMPUTE_FRAME_LAYOUT
#define TARGET_COMPUTE_FRAME_LAYOUT aarch64_layout_frame
/* Register in which the structure value is to be returned. */
#define AARCH64_STRUCT_VALUE_REGNUM R8_REGNUM