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rs6000.c (no_global_regs_above): New.

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2005-06-04  Dale Johannesen  <dalej@apple.com>

        * config/rs6000/rs6000.c (no_global_regs_above): New.
        (rs6000_emit_prologue):  Use it; cosmetic formatting fixes.
        (rs6000_emit_epilogue):  Use it; cosmetic formatting fixes.
        (rs6000_conditional_register_usage): Don't put Darwin PIC
        register in global_regs.
        (rs6000_stack_info):  Don't set lr_save_p just because Darwin
        PIC reg used.
        (rs6000_emit_prologue):  Save LR in R0 around Darwin PIC setup,
        if not done by lr_save_p.
        * config/rs6000/rs6000.md (insnv1_internal1):  Back out 05-18 patch.
        Use rotate instead of ashift.
        (call_indirect_nonlocal_sysv):  Prefer CTR to LR.
        (call_value_indirect_nonlocal_sysv):  Ditto.

From-SVN: r100601
This commit is contained in:
Dale Johannesen 2005-06-04 21:32:40 +00:00 committed by Dale Johannesen
parent d71cc23f71
commit 6d0a809119
3 changed files with 64 additions and 29 deletions
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16
gcc/ChangeLog
View File

@ -1,3 +1,19 @@
2005-06-04 Dale Johannesen <dalej@apple.com>
* config/rs6000/rs6000.c (no_global_regs_above): New.
(rs6000_emit_prologue): Use it; cosmetic formatting fixes.
(rs6000_emit_epilogue): Use it; cosmetic formatting fixes.
(rs6000_conditional_register_usage): Don't put Darwin PIC
register in global_regs.
(rs6000_stack_info): Don't set lr_save_p just because Darwin
PIC reg used.
(rs6000_emit_prologue): Save LR in R0 around Darwin PIC setup,
if not done by lr_save_p.
* config/rs6000/rs6000.md (insnv1_internal1): Back out 05-18 patch.
Use rotate instead of ashift.
(call_indirect_nonlocal_sysv): Prefer CTR to LR.
(call_value_indirect_nonlocal_sysv): Ditto.
2005-06-04 Jan Hubicka <jh@suse.cz>
* cgraphunit.c (cgraph_reset_node): Break out from ...

49
gcc/config/rs6000/rs6000.c
View File

@ -573,6 +573,7 @@ static bool legitimate_indexed_address_p (rtx, int);
static bool legitimate_lo_sum_address_p (enum machine_mode, rtx, int);
static struct machine_function * rs6000_init_machine_status (void);
static bool rs6000_assemble_integer (rtx, unsigned int, int);
static bool no_global_regs_above (int);
#ifdef HAVE_GAS_HIDDEN
static void rs6000_assemble_visibility (tree, int);
#endif
@ -3317,8 +3318,7 @@ rs6000_conditional_register_usage (void)
if (DEFAULT_ABI == ABI_DARWIN
&& PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM)
global_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
= fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
fixed_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
= call_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM]
= call_really_used_regs[RS6000_PIC_OFFSET_TABLE_REGNUM] = 1;
@ -12047,9 +12047,6 @@ rs6000_stack_info (void)
&& !FP_SAVE_INLINE (info_ptr->first_fp_reg_save))
|| info_ptr->first_altivec_reg_save <= LAST_ALTIVEC_REGNO
|| (DEFAULT_ABI == ABI_V4 && current_function_calls_alloca)
|| (DEFAULT_ABI == ABI_DARWIN
&& flag_pic
&& current_function_uses_pic_offset_table)
|| info_ptr->calls_p)
{
info_ptr->lr_save_p = 1;
@ -13229,6 +13226,19 @@ gen_frame_mem_offset (enum machine_mode mode, rtx reg, int offset)
return gen_rtx_MEM (mode, gen_rtx_PLUS (Pmode, reg, offset_rtx));
}
/* Look for user-defined global regs. We should not save and restore these,
and cannot use stmw/lmw if there are any in its range. */
static bool
no_global_regs_above (int first_greg)
{
int i;
for (i = 0; i < 32 - first_greg; i++)
if (global_regs[first_greg + i])
return false;
return true;
}
#ifndef TARGET_FIX_AND_CONTINUE
#define TARGET_FIX_AND_CONTINUE 0
#endif
@ -13273,7 +13283,8 @@ rs6000_emit_prologue (void)
using_store_multiple = (TARGET_MULTIPLE && ! TARGET_POWERPC64
&& (!TARGET_SPE_ABI
|| info->spe_64bit_regs_used == 0)
&& info->first_gp_reg_save < 31);
&& info->first_gp_reg_save < 31
&& no_global_regs_above (info->first_gp_reg_save));
saving_FPRs_inline = (info->first_fp_reg_save == 64
|| FP_SAVE_INLINE (info->first_fp_reg_save)
|| current_function_calls_eh_return
@ -13597,12 +13608,12 @@ rs6000_emit_prologue (void)
{
int i;
for (i = 0; i < 32 - info->first_gp_reg_save; i++)
if ((regs_ever_live[info->first_gp_reg_save+i]
&& (! call_used_regs[info->first_gp_reg_save+i]
|| (i+info->first_gp_reg_save
if ((regs_ever_live[info->first_gp_reg_save + i]
&& (!call_used_regs[info->first_gp_reg_save + i]
|| (i + info->first_gp_reg_save
== RS6000_PIC_OFFSET_TABLE_REGNUM
&& TARGET_TOC && TARGET_MINIMAL_TOC)))
|| (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
|| (i + info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
&& ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
{
@ -13787,12 +13798,19 @@ rs6000_emit_prologue (void)
rtx lr = gen_rtx_REG (Pmode, LINK_REGISTER_REGNUM);
rtx src = machopic_function_base_sym ();
/* Save and restore LR locally around this call (in R0). */
if (!info->lr_save_p)
rs6000_maybe_dead (emit_move_insn (gen_rtx_REG (Pmode, 0), lr));
rs6000_maybe_dead (emit_insn (gen_load_macho_picbase (lr, src)));
insn = emit_move_insn (gen_rtx_REG (Pmode,
RS6000_PIC_OFFSET_TABLE_REGNUM),
lr);
rs6000_maybe_dead (insn);
if (!info->lr_save_p)
rs6000_maybe_dead (emit_move_insn (lr, gen_rtx_REG (Pmode, 0)));
}
#endif
}
@ -13892,7 +13910,8 @@ rs6000_emit_epilogue (int sibcall)
using_load_multiple = (TARGET_MULTIPLE && ! TARGET_POWERPC64
&& (!TARGET_SPE_ABI
|| info->spe_64bit_regs_used == 0)
&& info->first_gp_reg_save < 31);
&& info->first_gp_reg_save < 31
&& no_global_regs_above (info->first_gp_reg_save));
restoring_FPRs_inline = (sibcall
|| current_function_calls_eh_return
|| info->first_fp_reg_save == 64
@ -14156,11 +14175,11 @@ rs6000_emit_epilogue (int sibcall)
}
else
for (i = 0; i < 32 - info->first_gp_reg_save; i++)
if ((regs_ever_live[info->first_gp_reg_save+i]
&& (! call_used_regs[info->first_gp_reg_save+i]
|| (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
if ((regs_ever_live[info->first_gp_reg_save + i]
&& (!call_used_regs[info->first_gp_reg_save + i]
|| (i + info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
&& TARGET_TOC && TARGET_MINIMAL_TOC)))
|| (i+info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
|| (i + info->first_gp_reg_save == RS6000_PIC_OFFSET_TABLE_REGNUM
&& ((DEFAULT_ABI == ABI_V4 && flag_pic != 0)
|| (DEFAULT_ABI == ABI_DARWIN && flag_pic))))
{

28
gcc/config/rs6000/rs6000.md
View File

@ -3004,7 +3004,7 @@
[(set (zero_extract:SI (match_operand:SI 0 "gpc_reg_operand" "+r")
(match_operand:SI 1 "const_int_operand" "i")
(match_operand:SI 2 "const_int_operand" "i"))
(ashift:SI (match_operand:SI 3 "gpc_reg_operand" "r")
(rotate:SI (match_operand:SI 3 "gpc_reg_operand" "r")
(match_operand:SI 4 "const_int_operand" "i")))]
"(32 - (INTVAL (operands[4]) & 31)) >= INTVAL (operands[1])"
"*
@ -3014,7 +3014,7 @@
int size = INTVAL (operands[1]) & 31;
operands[4] = GEN_INT (shift - start - size);
operands[1] = GEN_INT (start + size - 1 - shift);
operands[1] = GEN_INT (start + size - 1);
return \"{rlimi|rlwimi} %0,%3,%h4,%h2,%h1\";
}"
[(set_attr "type" "insert_word")])
@ -10328,10 +10328,10 @@
;; which indicates how to set cr1
(define_insn "*call_indirect_nonlocal_sysv"
[(call (mem:SI (match_operand:SI 0 "register_operand" "cl,cl"))
(match_operand 1 "" "g,g"))
(use (match_operand:SI 2 "immediate_operand" "O,n"))
(clobber (match_scratch:SI 3 "=l,l"))]
[(call (mem:SI (match_operand:SI 0 "register_operand" "c,*l,c,*l"))
(match_operand 1 "" "g,g,g,g"))
(use (match_operand:SI 2 "immediate_operand" "O,O,n,n"))
(clobber (match_scratch:SI 3 "=l,l,l,l"))]
"DEFAULT_ABI == ABI_V4
|| DEFAULT_ABI == ABI_DARWIN"
{
@ -10343,8 +10343,8 @@
return "b%T0l";
}
[(set_attr "type" "jmpreg,jmpreg")
(set_attr "length" "4,8")])
[(set_attr "type" "jmpreg,jmpreg,jmpreg,jmpreg")
(set_attr "length" "4,4,8,8")])
(define_insn "*call_nonlocal_sysv"
[(call (mem:SI (match_operand:SI 0 "symbol_ref_operand" "s,s"))
@ -10383,10 +10383,10 @@
(define_insn "*call_value_indirect_nonlocal_sysv"
[(set (match_operand 0 "" "")
(call (mem:SI (match_operand:SI 1 "register_operand" "cl,cl"))
(match_operand 2 "" "g,g")))
(use (match_operand:SI 3 "immediate_operand" "O,n"))
(clobber (match_scratch:SI 4 "=l,l"))]
(call (mem:SI (match_operand:SI 1 "register_operand" "c,*l,c,*l"))
(match_operand 2 "" "g,g,g,g")))
(use (match_operand:SI 3 "immediate_operand" "O,O,n,n"))
(clobber (match_scratch:SI 4 "=l,l,l,l"))]
"DEFAULT_ABI == ABI_V4
|| DEFAULT_ABI == ABI_DARWIN"
{
@ -10398,8 +10398,8 @@
return "b%T1l";
}
[(set_attr "type" "jmpreg,jmpreg")
(set_attr "length" "4,8")])
[(set_attr "type" "jmpreg,jmpreg,jmpreg,jmpreg")
(set_attr "length" "4,4,8,8")])
(define_insn "*call_value_nonlocal_sysv"
[(set (match_operand 0 "" "")