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[AArch64] Hoist calculation of register rtx. 

From-SVN: r212951
This commit is contained in:
Jiong Wang 2014-07-23 16:11:50 +00:00 committed by Marcus Shawcroft
parent 55185278ab
commit bc5f5f3695
2 changed files with 24 additions and 36 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2014-07-23 Jiong Wang <jiong.wang@arm.com>
* config/aarch64/aarch64.c
(aarch64_save_or_restore_callee_save_registers)
(aarch64_save_or_restore_fprs): Hoist calculation of register rtx.
2014-07-23 Jiong Wang <jiong.wang@arm.com>
* config/aarch64/aarch64.c

54
gcc/config/aarch64/aarch64.c
View File

@ -1922,6 +1922,7 @@ aarch64_save_or_restore_fprs (HOST_WIDE_INT start_offset, bool restore)
{
if (aarch64_register_saved_on_entry (regno))
{
rtx reg = gen_rtx_REG (DFmode, regno);
rtx mem;
HOST_WIDE_INT offset = start_offset
@ -1940,6 +1941,7 @@ aarch64_save_or_restore_fprs (HOST_WIDE_INT start_offset, bool restore)
if (regno2 <= V31_REGNUM
&& aarch64_register_saved_on_entry (regno2))
{
rtx reg2 = gen_rtx_REG (DFmode, regno2);
rtx mem2;
offset = start_offset + cfun->machine->frame.reg_offset[regno2];
@ -1947,22 +1949,12 @@ aarch64_save_or_restore_fprs (HOST_WIDE_INT start_offset, bool restore)
plus_constant (Pmode, stack_pointer_rtx,
offset));
if (restore == false)
{
insn = emit_insn
(gen_store_pairdf (mem, gen_rtx_REG (DFmode, regno),
mem2, gen_rtx_REG (DFmode, regno2)));
}
insn = emit_insn (gen_store_pairdf (mem, reg, mem2, reg2));
else
{
insn = emit_insn
(gen_load_pairdf (gen_rtx_REG (DFmode, regno), mem,
gen_rtx_REG (DFmode, regno2), mem2));
add_reg_note (insn, REG_CFA_RESTORE,
gen_rtx_REG (DFmode, regno));
add_reg_note (insn, REG_CFA_RESTORE,
gen_rtx_REG (DFmode, regno2));
insn = emit_insn (gen_load_pairdf (reg, mem, reg2, mem2));
add_reg_note (insn, REG_CFA_RESTORE, reg);
add_reg_note (insn, REG_CFA_RESTORE, reg2);
}
/* The first part of a frame-related parallel insn is
@ -1975,12 +1967,11 @@ aarch64_save_or_restore_fprs (HOST_WIDE_INT start_offset, bool restore)
else
{
if (restore == false)
insn = emit_move_insn (mem, gen_rtx_REG (DFmode, regno));
insn = emit_move_insn (mem, reg);
else
{
insn = emit_move_insn (gen_rtx_REG (DFmode, regno), mem);
add_reg_note (insn, REG_CFA_RESTORE,
gen_rtx_REG (DFmode, regno));
insn = emit_move_insn (reg, mem);
add_reg_note (insn, REG_CFA_RESTORE, reg);
}
}
RTX_FRAME_RELATED_P (insn) = 1;
@ -2006,6 +1997,7 @@ aarch64_save_or_restore_callee_save_registers (HOST_WIDE_INT start_offset,
{
if (aarch64_register_saved_on_entry (regno))
{
rtx reg = gen_rtx_REG (DImode, regno);
rtx mem;
HOST_WIDE_INT offset = start_offset
@ -2026,6 +2018,7 @@ aarch64_save_or_restore_callee_save_registers (HOST_WIDE_INT start_offset,
&& ((cfun->machine->frame.reg_offset[regno] + UNITS_PER_WORD)
== cfun->machine->frame.reg_offset[regno2]))
{
rtx reg2 = gen_rtx_REG (DImode, regno2);
rtx mem2;
offset = start_offset + cfun->machine->frame.reg_offset[regno2];
@ -2033,22 +2026,12 @@ aarch64_save_or_restore_callee_save_registers (HOST_WIDE_INT start_offset,
plus_constant (Pmode, stack_pointer_rtx,
offset));
if (restore == false)
{
insn = emit_insn
(gen_store_pairdi (mem, gen_rtx_REG (DImode, regno),
mem2, gen_rtx_REG (DImode, regno2)));
}
insn = emit_insn (gen_store_pairdi (mem, reg, mem2, reg2));
else
{
insn = emit_insn
(gen_load_pairdi (gen_rtx_REG (DImode, regno), mem,
gen_rtx_REG (DImode, regno2), mem2));
add_reg_note (insn, REG_CFA_RESTORE,
gen_rtx_REG (DImode, regno));
add_reg_note (insn, REG_CFA_RESTORE,
gen_rtx_REG (DImode, regno2));
insn = emit_insn (gen_load_pairdi (reg, mem, reg2, mem2));
add_reg_note (insn, REG_CFA_RESTORE, reg);
add_reg_note (insn, REG_CFA_RESTORE, reg2);
}
/* The first part of a frame-related parallel insn is
@ -2061,12 +2044,11 @@ aarch64_save_or_restore_callee_save_registers (HOST_WIDE_INT start_offset,
else
{
if (restore == false)
insn = emit_move_insn (mem, gen_rtx_REG (DImode, regno));
insn = emit_move_insn (mem, reg);
else
{
insn = emit_move_insn (gen_rtx_REG (DImode, regno), mem);
add_reg_note (insn, REG_CFA_RESTORE,
gen_rtx_REG (DImode, regno));
insn = emit_move_insn (reg, mem);
add_reg_note (insn, REG_CFA_RESTORE, reg);
}
}
RTX_FRAME_RELATED_P (insn) = 1;