mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-03-19 01:40:39 +08:00
bfin-protos.h (bfin_expand_epilogue): Add a third argument of type bool.
* config/bfin/bfin-protos.h (bfin_expand_epilogue): Add a third argument of type bool. * config/bfin/bfin.c (add_to_reg): Add epilogue_p as a fourth argument. Safely select temporary P register according to it. (do_link): Change call site of add_to_reg accordingly. (do_unlink): Add epilogue_p as a fourth argument and pass it to add_to_reg. (expand_interrupt_handler_epilogue): Change call of do_unlink accordingly. (bfin_expand_prologue): Add a third argument sibcall_p. * config/bfin/bfin.md (epilogue): Change call of bfin_expand_epilogue accordingly. (sibcall_epilogue): Likewise. (eh_return_internal): Likewise. From-SVN: r124542
This commit is contained in:
Jie Zhang
Bernd Schmidt
parent
a9b43781db
commit
1f9e4ca180
@ -1,3 +1,20 @@
|
||||
2007-05-08 Jie Zhang <jie.zhang@analog.com>
|
||||
|
||||
* config/bfin/bfin-protos.h (bfin_expand_epilogue): Add a third
|
||||
argument of type bool.
|
||||
* config/bfin/bfin.c (add_to_reg): Add epilogue_p as a fourth
|
||||
argument. Safely select temporary P register according to it.
|
||||
(do_link): Change call site of add_to_reg accordingly.
|
||||
(do_unlink): Add epilogue_p as a fourth argument and pass it
|
||||
to add_to_reg.
|
||||
(expand_interrupt_handler_epilogue): Change call of do_unlink
|
||||
accordingly.
|
||||
(bfin_expand_prologue): Add a third argument sibcall_p.
|
||||
* config/bfin/bfin.md (epilogue): Change call of
|
||||
bfin_expand_epilogue accordingly.
|
||||
(sibcall_epilogue): Likewise.
|
||||
(eh_return_internal): Likewise.
|
||||
|
||||
2007-05-08 Uros Bizjak <ubizjak@gmail.com>
|
||||
|
||||
PR target/31854
|
||||
|
||||
@ -89,7 +89,7 @@ extern bool bfin_legitimate_address_p (Mmode, rtx, int);
|
||||
extern rtx bfin_va_arg (tree, tree);
|
||||
|
||||
extern void bfin_expand_prologue (void);
|
||||
extern void bfin_expand_epilogue (int, int);
|
||||
extern void bfin_expand_epilogue (int, int, bool);
|
||||
extern int push_multiple_operation (rtx, Mmode);
|
||||
extern int pop_multiple_operation (rtx, Mmode);
|
||||
extern void output_push_multiple (rtx, rtx *);
|
||||
|
||||
@ -569,12 +569,14 @@ frame_related_constant_load (rtx reg, HOST_WIDE_INT constant, bool related)
|
||||
RTX_FRAME_RELATED_P (insn) = 1;
|
||||
}
|
||||
|
||||
/* Generate efficient code to add a value to a P register. We can use
|
||||
P1 as a scratch register. Set RTX_FRAME_RELATED_P on the generated
|
||||
insns if FRAME is nonzero. */
|
||||
/* Generate efficient code to add a value to a P register.
|
||||
Set RTX_FRAME_RELATED_P on the generated insns if FRAME is nonzero.
|
||||
EPILOGUE_P is zero if this function is called for prologue,
|
||||
otherwise it's nonzero. And it's less than zero if this is for
|
||||
sibcall epilogue. */
|
||||
|
||||
static void
|
||||
add_to_reg (rtx reg, HOST_WIDE_INT value, int frame)
|
||||
add_to_reg (rtx reg, HOST_WIDE_INT value, int frame, int epilogue_p)
|
||||
{
|
||||
if (value == 0)
|
||||
return;
|
||||
@ -584,9 +586,41 @@ add_to_reg (rtx reg, HOST_WIDE_INT value, int frame)
|
||||
in one instruction. */
|
||||
if (value > 120 || value < -120)
|
||||
{
|
||||
rtx tmpreg = gen_rtx_REG (SImode, REG_P1);
|
||||
rtx tmpreg;
|
||||
rtx tmpreg2;
|
||||
rtx insn;
|
||||
|
||||
tmpreg2 = NULL_RTX;
|
||||
|
||||
/* For prologue or normal epilogue, P1 can be safely used
|
||||
as the temporary register. For sibcall epilogue, we try to find
|
||||
a call used P register, which will be restored in epilogue.
|
||||
If we cannot find such a P register, we have to use one I register
|
||||
to help us. */
|
||||
|
||||
if (epilogue_p >= 0)
|
||||
tmpreg = gen_rtx_REG (SImode, REG_P1);
|
||||
else
|
||||
{
|
||||
int i;
|
||||
for (i = REG_P0; i <= REG_P5; i++)
|
||||
if ((regs_ever_live[i] && ! call_used_regs[i])
|
||||
|| (!TARGET_FDPIC
|
||||
&& i == PIC_OFFSET_TABLE_REGNUM
|
||||
&& (current_function_uses_pic_offset_table
|
||||
|| (TARGET_ID_SHARED_LIBRARY
|
||||
&& ! current_function_is_leaf))))
|
||||
break;
|
||||
if (i <= REG_P5)
|
||||
tmpreg = gen_rtx_REG (SImode, i);
|
||||
else
|
||||
{
|
||||
tmpreg = gen_rtx_REG (SImode, REG_P1);
|
||||
tmpreg2 = gen_rtx_REG (SImode, REG_I0);
|
||||
emit_move_insn (tmpreg2, tmpreg);
|
||||
}
|
||||
}
|
||||
|
||||
if (frame)
|
||||
frame_related_constant_load (tmpreg, value, TRUE);
|
||||
else
|
||||
@ -595,6 +629,9 @@ add_to_reg (rtx reg, HOST_WIDE_INT value, int frame)
|
||||
insn = emit_insn (gen_addsi3 (reg, reg, tmpreg));
|
||||
if (frame)
|
||||
RTX_FRAME_RELATED_P (insn) = 1;
|
||||
|
||||
if (tmpreg2 != NULL_RTX)
|
||||
emit_move_insn (tmpreg, tmpreg2);
|
||||
}
|
||||
else
|
||||
do
|
||||
@ -702,14 +739,17 @@ do_link (rtx spreg, HOST_WIDE_INT frame_size, bool all)
|
||||
rtx insn = emit_insn (pat);
|
||||
RTX_FRAME_RELATED_P (insn) = 1;
|
||||
}
|
||||
add_to_reg (spreg, -frame_size, 1);
|
||||
add_to_reg (spreg, -frame_size, 1, 0);
|
||||
}
|
||||
}
|
||||
|
||||
/* Like do_link, but used for epilogues to deallocate the stack frame. */
|
||||
/* Like do_link, but used for epilogues to deallocate the stack frame.
|
||||
EPILOGUE_P is zero if this function is called for prologue,
|
||||
otherwise it's nonzero. And it's less than zero if this is for
|
||||
sibcall epilogue. */
|
||||
|
||||
static void
|
||||
do_unlink (rtx spreg, HOST_WIDE_INT frame_size, bool all)
|
||||
do_unlink (rtx spreg, HOST_WIDE_INT frame_size, bool all, int epilogue_p)
|
||||
{
|
||||
frame_size += arg_area_size ();
|
||||
|
||||
@ -719,7 +759,7 @@ do_unlink (rtx spreg, HOST_WIDE_INT frame_size, bool all)
|
||||
{
|
||||
rtx postinc = gen_rtx_MEM (Pmode, gen_rtx_POST_INC (Pmode, spreg));
|
||||
|
||||
add_to_reg (spreg, frame_size, 0);
|
||||
add_to_reg (spreg, frame_size, 0, epilogue_p);
|
||||
if (must_save_fp_p ())
|
||||
{
|
||||
rtx fpreg = gen_rtx_REG (Pmode, REG_FP);
|
||||
@ -842,7 +882,7 @@ expand_interrupt_handler_epilogue (rtx spreg, e_funkind fkind)
|
||||
insns. */
|
||||
MEM_VOLATILE_P (postinc) = 1;
|
||||
|
||||
do_unlink (spreg, get_frame_size (), all);
|
||||
do_unlink (spreg, get_frame_size (), all, 1);
|
||||
|
||||
if (lookup_attribute ("nesting", attrs))
|
||||
{
|
||||
@ -968,7 +1008,7 @@ bfin_expand_prologue (void)
|
||||
{
|
||||
if (lim != p2reg)
|
||||
emit_move_insn (p2reg, lim);
|
||||
add_to_reg (p2reg, offset, 0);
|
||||
add_to_reg (p2reg, offset, 0, 0);
|
||||
lim = p2reg;
|
||||
}
|
||||
emit_insn (gen_compare_lt (bfin_cc_rtx, spreg, lim));
|
||||
@ -987,13 +1027,15 @@ bfin_expand_prologue (void)
|
||||
|
||||
/* Generate RTL for the epilogue of the current function. NEED_RETURN is zero
|
||||
if this is for a sibcall. EH_RETURN is nonzero if we're expanding an
|
||||
eh_return pattern. */
|
||||
eh_return pattern. SIBCALL_P is true if this is a sibcall epilogue,
|
||||
false otherwise. */
|
||||
|
||||
void
|
||||
bfin_expand_epilogue (int need_return, int eh_return)
|
||||
bfin_expand_epilogue (int need_return, int eh_return, bool sibcall_p)
|
||||
{
|
||||
rtx spreg = gen_rtx_REG (Pmode, REG_SP);
|
||||
e_funkind fkind = funkind (TREE_TYPE (current_function_decl));
|
||||
int e = sibcall_p ? -1 : 1;
|
||||
|
||||
if (fkind != SUBROUTINE)
|
||||
{
|
||||
@ -1001,7 +1043,7 @@ bfin_expand_epilogue (int need_return, int eh_return)
|
||||
return;
|
||||
}
|
||||
|
||||
do_unlink (spreg, get_frame_size (), false);
|
||||
do_unlink (spreg, get_frame_size (), false, e);
|
||||
|
||||
expand_epilogue_reg_restore (spreg, false, false);
|
||||
|
||||
|
||||
@ -2668,12 +2668,12 @@
|
||||
(define_expand "epilogue"
|
||||
[(const_int 1)]
|
||||
""
|
||||
"bfin_expand_epilogue (1, 0); DONE;")
|
||||
"bfin_expand_epilogue (1, 0, 0); DONE;")
|
||||
|
||||
(define_expand "sibcall_epilogue"
|
||||
[(const_int 1)]
|
||||
""
|
||||
"bfin_expand_epilogue (0, 0); DONE;")
|
||||
"bfin_expand_epilogue (0, 0, 1); DONE;")
|
||||
|
||||
(define_expand "eh_return"
|
||||
[(unspec_volatile [(match_operand:SI 0 "register_operand" "")]
|
||||
@ -2693,7 +2693,7 @@
|
||||
"#"
|
||||
"reload_completed"
|
||||
[(const_int 1)]
|
||||
"bfin_expand_epilogue (1, 1); DONE;")
|
||||
"bfin_expand_epilogue (1, 1, 0); DONE;")
|
||||
|
||||
(define_insn "link"
|
||||
[(set (mem:SI (plus:SI (reg:SI REG_SP) (const_int -4))) (reg:SI REG_RETS))
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user