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rs6000: Simplify some conditions or code related to TARGET_DIRECT_MOVE

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When I was making a patch to rework TARGET_P8_VECTOR, I
noticed that there are some redundant checks and dead code
related to TARGET_DIRECT_MOVE, so I made this patch as one
separated preparatory patch, it consists of:
  - Check either TARGET_DIRECT_MOVE or TARGET_P8_VECTOR only
    according to the context, rather than checking both of
    them since they are actually the same (TARGET_DIRECT_MOVE
    is defined as TARGET_P8_VECTOR).
  - Simplify TARGET_VSX && TARGET_DIRECT_MOVE as
    TARGET_DIRECT_MOVE since direct move ensures VSX enabled.
  - Replace some TARGET_POWERPC64 && TARGET_DIRECT_MOVE as
    TARGET_DIRECT_MOVE_64BIT to simplify it.
  - Remove some dead code guarded with TARGET_DIRECT_MOVE
    but the condition never holds here.

gcc/ChangeLog:

	* config/rs6000/rs6000.cc (rs6000_option_override_internal): Simplify
	TARGET_P8_VECTOR && TARGET_DIRECT_MOVE as TARGET_P8_VECTOR.
	(rs6000_output_move_128bit): Simplify TARGET_VSX && TARGET_DIRECT_MOVE
	as TARGET_DIRECT_MOVE.
	* config/rs6000/rs6000.h (TARGET_XSCVDPSPN): Simplify conditions
	TARGET_DIRECT_MOVE || TARGET_P8_VECTOR as TARGET_P8_VECTOR.
	(TARGET_XSCVSPDPN): Likewise.
	(TARGET_DIRECT_MOVE_128): Simplify TARGET_DIRECT_MOVE &&
	TARGET_POWERPC64 as TARGET_DIRECT_MOVE_64BIT.
	(TARGET_VEXTRACTUB): Likewise.
	(TARGET_DIRECT_MOVE_64BIT): Simplify TARGET_P8_VECTOR &&
	TARGET_DIRECT_MOVE as TARGET_DIRECT_MOVE.
	* config/rs6000/rs6000.md (signbit<mode>2, @signbit<mode>2_dm,
	*signbit<mode>2_dm_mem, floatsi<mode>2_lfiwax,
	floatsi<SFDF:mode>2_lfiwax_<QHI:mode>_mem_zext,
	floatunssi<mode>2_lfiwzx, float<QHI:mode><SFDF:mode>2,
	*float<QHI:mode><SFDF:mode>2_internal, floatuns<QHI:mode><SFDF:mode>2,
	*floatuns<QHI:mode><SFDF:mode>2_internal, p8_mtvsrd_v16qidi2,
	p8_mtvsrd_df, p8_xxpermdi_<mode>, reload_vsx_from_gpr<mode>,
	p8_mtvsrd_sf, reload_vsx_from_gprsf, p8_mfvsrd_3_<mode>,
	reload_gpr_from_vsx<mode>, reload_gpr_from_vsxsf, unpack<mode>_dm):
	Simplify TARGET_DIRECT_MOVE && TARGET_POWERPC64 as
	TARGET_DIRECT_MOVE_64BIT.
	(unpack<mode>_nodm): Simplify !TARGET_DIRECT_MOVE || !TARGET_POWERPC64
	as !TARGET_DIRECT_MOVE_64BIT.
	(fix_trunc<mode>si2, fix_trunc<mode>si2_stfiwx,
	fix_trunc<mode>si2_internal): Simplify TARGET_P8_VECTOR &&
	TARGET_DIRECT_MOVE as TARGET_DIRECT_MOVE.
	(fix_trunc<mode>si2_stfiwx, fixuns_trunc<mode>si2_stfiwx): Remove some
	dead code as the guard TARGET_DIRECT_MOVE there never holds.
	(fixuns_trunc<mode>si2_stfiwx): Change TARGET_P8_VECTOR with
	TARGET_DIRECT_MOVE which is a better fit.
	* config/rs6000/vsx.md (define_peephole2 for SFmode in GPR): Simplify
	TARGET_DIRECT_MOVE && TARGET_POWERPC64 as TARGET_DIRECT_MOVE_64BIT.
This commit is contained in:
Kewen Lin 2024-11-21 07:41:33 +00:00 committed by Kewen Lin
parent e7e6608387
commit 33386d1421
4 changed files with 32 additions and 47 deletions
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4
gcc/config/rs6000/rs6000.cc
View File

@ -4055,7 +4055,7 @@ rs6000_option_override_internal (bool global_init_p)
support. If we only have ISA 2.06 support, and the user did not specify
the switch, leave it set to -1 so the movmisalign patterns are enabled,
but we don't enable the full vectorization support */
if (TARGET_ALLOW_MOVMISALIGN == -1 && TARGET_P8_VECTOR && TARGET_DIRECT_MOVE)
if (TARGET_ALLOW_MOVMISALIGN == -1 && TARGET_P8_VECTOR)
TARGET_ALLOW_MOVMISALIGN = 1;
else if (TARGET_ALLOW_MOVMISALIGN && !TARGET_VSX)
@ -13799,7 +13799,7 @@ rs6000_output_move_128bit (rtx operands[])
? "mfvsrd %0,%x1\n\tmfvsrld %L0,%x1"
: "mfvsrd %L0,%x1\n\tmfvsrld %0,%x1");
else if (TARGET_VSX && TARGET_DIRECT_MOVE && src_vsx_p)
else if (TARGET_DIRECT_MOVE && src_vsx_p)
return "#";
}

11
gcc/config/rs6000/rs6000.h
View File

@ -469,13 +469,11 @@ extern int rs6000_vector_align[];
/* TARGET_DIRECT_MOVE is redundant to TARGET_P8_VECTOR, so alias it to that. */
#define TARGET_DIRECT_MOVE TARGET_P8_VECTOR
#define TARGET_XSCVDPSPN (TARGET_DIRECT_MOVE || TARGET_P8_VECTOR)
#define TARGET_XSCVSPDPN (TARGET_DIRECT_MOVE || TARGET_P8_VECTOR)
#define TARGET_XSCVDPSPN TARGET_P8_VECTOR
#define TARGET_XSCVSPDPN TARGET_P8_VECTOR
#define TARGET_VADDUQM (TARGET_P8_VECTOR && TARGET_POWERPC64)
#define TARGET_DIRECT_MOVE_128 (TARGET_P9_VECTOR && TARGET_DIRECT_MOVE \
&& TARGET_POWERPC64)
#define TARGET_VEXTRACTUB (TARGET_P9_VECTOR && TARGET_DIRECT_MOVE \
&& TARGET_POWERPC64)
#define TARGET_DIRECT_MOVE_128 (TARGET_P9_VECTOR && TARGET_DIRECT_MOVE_64BIT)
#define TARGET_VEXTRACTUB (TARGET_P9_VECTOR && TARGET_DIRECT_MOVE_64BIT)
/* Whether we should avoid (SUBREG:SI (REG:SF) and (SUBREG:SF (REG:SI). */
#define TARGET_NO_SF_SUBREG TARGET_DIRECT_MOVE_64BIT
@ -555,7 +553,6 @@ extern int rs6000_vector_align[];
the calculation in 64-bit GPRs and then is transfered to the vector
registers. */
#define TARGET_DIRECT_MOVE_64BIT (TARGET_DIRECT_MOVE \
&& TARGET_P8_VECTOR \
&& TARGET_POWERPC64)
/* Inlining allows targets to define the meanings of bits in target_info

62
gcc/config/rs6000/rs6000.md
View File

@ -5296,7 +5296,7 @@
(match_dup 6))]
"TARGET_HARD_FLOAT
&& (!FLOAT128_IEEE_P (<MODE>mode)
|| (TARGET_POWERPC64 && TARGET_DIRECT_MOVE))"
|| TARGET_DIRECT_MOVE_64BIT)"
{
if (FLOAT128_IEEE_P (<MODE>mode))
{
@ -5339,7 +5339,7 @@
[(set (match_operand:DI 0 "gpc_reg_operand" "=r,r")
(unspec:DI [(match_operand:SIGNBIT 1 "gpc_reg_operand" "wa,r")]
UNSPEC_SIGNBIT))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"@
mfvsrd %0,%x1
#"
@ -5358,7 +5358,7 @@
[(set (match_operand:DI 0 "gpc_reg_operand" "=b")
(unspec:DI [(match_operand:SIGNBIT 1 "memory_operand" "m")]
UNSPEC_SIGNBIT))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"#"
"&& 1"
[(set (match_dup 0)
@ -5872,7 +5872,7 @@
rtx src = operands[1];
rtx tmp;
if (!MEM_P (src) && TARGET_POWERPC64 && TARGET_DIRECT_MOVE)
if (!MEM_P (src) && TARGET_DIRECT_MOVE_64BIT)
tmp = convert_to_mode (DImode, src, false);
else
{
@ -5928,7 +5928,7 @@
(match_operand:QHI 1 "indexed_or_indirect_operand" "Z,Z"))))
(clobber (match_scratch:DI 2 "=d,wa"))]
"TARGET_HARD_FLOAT && <SI_CONVERT_FP> && TARGET_P9_VECTOR
&& TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
&& TARGET_DIRECT_MOVE_64BIT"
"#"
"&& 1"
[(pc)]
@ -5968,7 +5968,7 @@
rtx src = operands[1];
rtx tmp;
if (!MEM_P (src) && TARGET_POWERPC64 && TARGET_DIRECT_MOVE)
if (!MEM_P (src) && TARGET_DIRECT_MOVE_64BIT)
tmp = convert_to_mode (DImode, src, true);
else
{
@ -6187,7 +6187,7 @@
(clobber (match_scratch:DI 2))
(clobber (match_scratch:DI 3))
(clobber (match_scratch:<QHI:MODE> 4))])]
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE && TARGET_POWERPC64"
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE_64BIT"
{
if (MEM_P (operands[1]))
operands[1] = rs6000_force_indexed_or_indirect_mem (operands[1]);
@ -6200,7 +6200,7 @@
(clobber (match_scratch:DI 2 "=v,wa,v"))
(clobber (match_scratch:DI 3 "=X,r,X"))
(clobber (match_scratch:<QHI:MODE> 4 "=X,X,v"))]
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE && TARGET_POWERPC64"
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE_64BIT"
"#"
"&& reload_completed"
[(const_int 0)]
@ -6240,7 +6240,7 @@
(match_operand:QHI 1 "input_operand")))
(clobber (match_scratch:DI 2))
(clobber (match_scratch:DI 3))])]
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE && TARGET_POWERPC64"
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE_64BIT"
{
if (MEM_P (operands[1]))
operands[1] = rs6000_force_indexed_or_indirect_mem (operands[1]);
@ -6252,7 +6252,7 @@
(match_operand:QHI 1 "reg_or_indexed_operand" "v,r,Z")))
(clobber (match_scratch:DI 2 "=v,wa,wa"))
(clobber (match_scratch:DI 3 "=X,r,X"))]
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE && TARGET_POWERPC64"
"TARGET_P9_VECTOR && TARGET_DIRECT_MOVE_64BIT"
"#"
"&& reload_completed"
[(const_int 0)]
@ -6285,7 +6285,7 @@
(fix:SI (match_operand:SFDF 1 "gpc_reg_operand")))]
"TARGET_HARD_FLOAT"
{
if (!(TARGET_P8_VECTOR && TARGET_DIRECT_MOVE))
if (!TARGET_DIRECT_MOVE)
{
rtx src = force_reg (<MODE>mode, operands[1]);
@ -6310,7 +6310,7 @@
(fix:SI (match_operand:SFDF 1 "gpc_reg_operand" "d")))
(clobber (match_scratch:DI 2 "=d"))]
"TARGET_HARD_FLOAT && TARGET_STFIWX && can_create_pseudo_p ()
&& !(TARGET_P8_VECTOR && TARGET_DIRECT_MOVE)"
&& !TARGET_DIRECT_MOVE"
"#"
"&& 1"
[(pc)]
@ -6329,12 +6329,6 @@
emit_insn (gen_stfiwx (dest, tmp));
DONE;
}
else if (TARGET_POWERPC64 && TARGET_DIRECT_MOVE && !MEM_P (dest))
{
dest = gen_lowpart (DImode, dest);
emit_move_insn (dest, tmp);
DONE;
}
else
{
rtx stack = rs6000_allocate_stack_temp (SImode, false, true);
@ -6352,7 +6346,7 @@
(clobber (match_operand:DI 2 "gpc_reg_operand" "=1,d"))
(clobber (match_operand:DI 3 "offsettable_mem_operand" "=o,o"))]
"TARGET_HARD_FLOAT
&& !(TARGET_P8_VECTOR && TARGET_DIRECT_MOVE)"
&& !TARGET_DIRECT_MOVE"
"#"
"&& 1"
[(pc)]
@ -6458,7 +6452,7 @@
(clobber (match_scratch:DI 2 "=d"))]
"TARGET_HARD_FLOAT && TARGET_FCTIWUZ
&& TARGET_STFIWX && can_create_pseudo_p ()
&& !TARGET_P8_VECTOR"
&& !TARGET_DIRECT_MOVE"
"#"
"&& 1"
[(pc)]
@ -6477,12 +6471,6 @@
emit_insn (gen_stfiwx (dest, tmp));
DONE;
}
else if (TARGET_POWERPC64 && TARGET_DIRECT_MOVE)
{
dest = gen_lowpart (DImode, dest);
emit_move_insn (dest, tmp);
DONE;
}
else
{
rtx stack = rs6000_allocate_stack_temp (SImode, false, true);
@ -9572,7 +9560,7 @@
[(set (match_operand:V16QI 0 "register_operand" "=wa")
(unspec:V16QI [(match_operand:DI 1 "register_operand" "r")]
UNSPEC_P8V_MTVSRD))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"mtvsrd %x0,%1"
[(set_attr "type" "mtvsr")])
@ -9606,7 +9594,7 @@
[(set (match_operand:DF 0 "register_operand" "=wa")
(unspec:DF [(match_operand:DI 1 "register_operand" "r")]
UNSPEC_P8V_MTVSRD))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"mtvsrd %x0,%1"
[(set_attr "type" "mtvsr")])
@ -9616,7 +9604,7 @@
(match_operand:DF 1 "register_operand" "wa")
(match_operand:DF 2 "register_operand" "wa")]
UNSPEC_P8V_XXPERMDI))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"xxpermdi %x0,%x1,%x2,0"
[(set_attr "type" "vecperm")])
@ -9626,7 +9614,7 @@
[(match_operand:FMOVE128_GPR 1 "register_operand" "r")]
UNSPEC_P8V_RELOAD_FROM_GPR))
(clobber (match_operand:IF 2 "register_operand" "=wa"))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"#"
"&& reload_completed"
[(const_int 0)]
@ -9671,7 +9659,7 @@
[(set (match_operand:SF 0 "register_operand" "=wa")
(unspec:SF [(match_operand:DI 1 "register_operand" "r")]
UNSPEC_P8V_MTVSRD))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"mtvsrd %x0,%1"
[(set_attr "type" "mtvsr")])
@ -9680,7 +9668,7 @@
(unspec:SF [(match_operand:SF 1 "register_operand" "r")]
UNSPEC_P8V_RELOAD_FROM_GPR))
(clobber (match_operand:DI 2 "register_operand" "=r"))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"#"
"&& reload_completed"
[(const_int 0)]
@ -9706,7 +9694,7 @@
[(set (match_operand:DF 0 "register_operand" "=r")
(unspec:DF [(match_operand:FMOVE128_GPR 1 "register_operand" "wa")]
UNSPEC_P8V_RELOAD_FROM_VSX))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"mfvsrd %0,%x1"
[(set_attr "type" "mfvsr")])
@ -9716,7 +9704,7 @@
[(match_operand:FMOVE128_GPR 1 "register_operand" "wa")]
UNSPEC_P8V_RELOAD_FROM_VSX))
(clobber (match_operand:FMOVE128_GPR 2 "register_operand" "=wa"))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"#"
"&& reload_completed"
[(const_int 0)]
@ -9744,7 +9732,7 @@
(unspec:SF [(match_operand:SF 1 "register_operand" "wa")]
UNSPEC_P8V_RELOAD_FROM_VSX))
(clobber (match_operand:V4SF 2 "register_operand" "=wa"))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE"
"TARGET_DIRECT_MOVE_64BIT"
"#"
"&& reload_completed"
[(const_int 0)]
@ -14873,7 +14861,7 @@
[(match_operand:FMOVE128 1 "register_operand" "d,d,r,d,r")
(match_operand:QI 2 "const_0_to_1_operand" "i,i,i,i,i")]
UNSPEC_UNPACK_128BIT))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE && FLOAT128_2REG_P (<MODE>mode)"
"TARGET_DIRECT_MOVE_64BIT && FLOAT128_2REG_P (<MODE>mode)"
"#"
"&& reload_completed"
[(set (match_dup 0) (match_dup 3))]
@ -14896,7 +14884,7 @@
[(match_operand:FMOVE128 1 "register_operand" "d,d,r")
(match_operand:QI 2 "const_0_to_1_operand" "i,i,i")]
UNSPEC_UNPACK_128BIT))]
"(!TARGET_POWERPC64 || !TARGET_DIRECT_MOVE) && FLOAT128_2REG_P (<MODE>mode)"
"!TARGET_DIRECT_MOVE_64BIT && FLOAT128_2REG_P (<MODE>mode)"
"#"
"&& reload_completed"
[(set (match_dup 0) (match_dup 3))]

2
gcc/config/rs6000/vsx.md
View File

@ -6338,7 +6338,7 @@
(set (match_operand:SF SFBOOL_MTVSR_D "vsx_register_operand")
(unspec:SF [(match_dup SFBOOL_SHL_D)] UNSPEC_P8V_MTVSRD))]
"TARGET_POWERPC64 && TARGET_DIRECT_MOVE
"TARGET_DIRECT_MOVE_64BIT
/* The REG_P (xxx) tests prevents SUBREG's, which allows us to use REGNO
to compare registers, when the mode is different. */
&& REG_P (operands[SFBOOL_MFVSR_D]) && REG_P (operands[SFBOOL_BOOL_D])