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rs6000.c (emit_frame_save): New.

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2002-07-10  Aldy Hernandez  <aldyh@redhat.com>

        * config/rs6000/rs6000.c (emit_frame_save): New.
        (rs6000_frame_related): Replace reg2 before reg.
        (rs6000_emit_prologue): Use emit_frame_save for saving gprs, fprs,
        and eh_return registers.

From-SVN: r55383
This commit is contained in:
Aldy Hernandez 2002-07-10 23:12:53 +00:00 committed by Aldy Hernandez
parent 21026f495b
commit 89e7058fdf
2 changed files with 71 additions and 43 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2002-07-10 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/rs6000.c (emit_frame_save): New.
(rs6000_frame_related): Replace reg2 before reg.
(rs6000_emit_prologue): Use emit_frame_save for saving gprs, fprs,
and eh_return registers.
2002-07-10 Toon Moene <toon@moene.indiv.nluug.nl>
Revert all patches for optimization of Complex .op. Real.

107
gcc/config/rs6000/rs6000.c
View File

@ -140,6 +140,8 @@ static rtx rs6000_generate_compare PARAMS ((enum rtx_code));
static void rs6000_maybe_dead PARAMS ((rtx));
static void rs6000_emit_stack_tie PARAMS ((void));
static void rs6000_frame_related PARAMS ((rtx, rtx, HOST_WIDE_INT, rtx, rtx));
static void emit_frame_save PARAMS ((rtx, rtx, enum machine_mode,
unsigned int, int, int));
static void rs6000_emit_allocate_stack PARAMS ((HOST_WIDE_INT, int));
static unsigned rs6000_hash_constant PARAMS ((rtx));
static unsigned toc_hash_function PARAMS ((const void *));
@ -8452,6 +8454,9 @@ rs6000_frame_related (insn, reg, val, reg2, rreg)
real = copy_rtx (PATTERN (insn));
if (reg2 != NULL_RTX)
real = replace_rtx (real, reg2, rreg);
real = replace_rtx (real, reg,
gen_rtx_PLUS (Pmode, gen_rtx_REG (Pmode,
STACK_POINTER_REGNUM),
@ -8504,9 +8509,6 @@ rs6000_frame_related (insn, reg, val, reg2, rreg)
else
abort ();
if (reg2 != NULL_RTX)
real = replace_rtx (real, reg2, rreg);
RTX_FRAME_RELATED_P (insn) = 1;
REG_NOTES (insn) = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR,
real,
@ -8575,6 +8577,53 @@ generate_set_vrsave (reg, info, epiloguep)
return insn;
}
/* Save a register into the frame, and emit RTX_FRAME_RELATED_P notes.
Save REGNO into [FRAME_REG + OFFSET] in mode MODE. */
static void
emit_frame_save (frame_reg, frame_ptr, mode, regno, offset, total_size)
rtx frame_reg;
rtx frame_ptr;
enum machine_mode mode;
unsigned int regno;
int offset;
int total_size;
{
rtx reg, offset_rtx, insn, mem, addr, int_rtx;
rtx replacea, replaceb;
int_rtx = GEN_INT (offset);
/* Some cases that need register indexed addressing. */
if ((TARGET_ALTIVEC_ABI && ALTIVEC_VECTOR_MODE (mode))
/* Add more cases here. */
)
{
/* Whomever calls us must make sure r11 is available in the
flow path of instructions in the prologue. */
offset_rtx = gen_rtx_REG (Pmode, 11);
emit_move_insn (offset_rtx, int_rtx);
replacea = offset_rtx;
replaceb = int_rtx;
}
else
{
offset_rtx = int_rtx;
replacea = NULL_RTX;
replaceb = NULL_RTX;
}
reg = gen_rtx_REG (mode, regno);
addr = gen_rtx_PLUS (Pmode, frame_reg, offset_rtx);
mem = gen_rtx_MEM (mode, addr);
set_mem_alias_set (mem, rs6000_sr_alias_set);
insn = emit_move_insn (mem, reg);
rs6000_frame_related (insn, frame_ptr, total_size, replacea, replaceb);
}
/* Emit function prologue as insns. */
void
@ -8702,20 +8751,10 @@ rs6000_emit_prologue ()
for (i = 0; i < 64 - info->first_fp_reg_save; i++)
if ((regs_ever_live[info->first_fp_reg_save+i]
&& ! call_used_regs[info->first_fp_reg_save+i]))
{
rtx addr, reg, mem;
reg = gen_rtx_REG (DFmode, info->first_fp_reg_save + i);
addr = gen_rtx_PLUS (Pmode, frame_reg_rtx,
GEN_INT (info->fp_save_offset
+ sp_offset
+ 8 * i));
mem = gen_rtx_MEM (DFmode, addr);
set_mem_alias_set (mem, rs6000_sr_alias_set);
insn = emit_move_insn (mem, reg);
rs6000_frame_related (insn, frame_ptr_rtx, info->total_size,
NULL_RTX, NULL_RTX);
}
emit_frame_save (frame_reg_rtx, frame_ptr_rtx, DFmode,
info->first_fp_reg_save + i,
info->fp_save_offset + sp_offset + 8 * i,
info->total_size);
}
else if (info->first_fp_reg_save != 64)
{
@ -8785,20 +8824,10 @@ rs6000_emit_prologue ()
|| (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
&& ((DEFAULT_ABI == ABI_V4 && flag_pic == 1)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
{
rtx addr, reg, mem;
reg = gen_rtx_REG (reg_mode, info->first_gp_reg_save + i);
addr = gen_rtx_PLUS (Pmode, frame_reg_rtx,
GEN_INT (info->gp_save_offset
+ sp_offset
+ reg_size * i));
mem = gen_rtx_MEM (reg_mode, addr);
set_mem_alias_set (mem, rs6000_sr_alias_set);
insn = emit_move_insn (mem, reg);
rs6000_frame_related (insn, frame_ptr_rtx, info->total_size,
NULL_RTX, NULL_RTX);
}
emit_frame_save (frame_reg_rtx, frame_ptr_rtx, reg_mode,
info->first_gp_reg_save + i,
info->gp_save_offset + sp_offset + reg_size * i,
info->total_size);
}
/* ??? There's no need to emit actual instructions here, but it's the
@ -8809,22 +8838,14 @@ rs6000_emit_prologue ()
for (i = 0; ; ++i)
{
rtx addr, reg, mem;
regno = EH_RETURN_DATA_REGNO (i);
if (regno == INVALID_REGNUM)
break;
reg = gen_rtx_REG (reg_mode, regno);
addr = plus_constant (frame_reg_rtx,
info->ehrd_offset + sp_offset
+ reg_size * (int) i);
mem = gen_rtx_MEM (reg_mode, addr);
set_mem_alias_set (mem, rs6000_sr_alias_set);
insn = emit_move_insn (mem, reg);
rs6000_frame_related (insn, frame_ptr_rtx, info->total_size,
NULL_RTX, NULL_RTX);
emit_frame_save (frame_reg_rtx, frame_ptr_rtx, reg_mode, regno,
info->ehrd_offset + sp_offset
+ reg_size * (int) i,
info->total_size);
}
}