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i386.md (*movxf_internal): Penalize FYx*r->o alternative to prevent partial memory stalls. 

* config/i386/i386.md (*movxf_internal): Penalize FYx*r->o alternative
	to prevent partial memory stalls.  Do not move CONST_DOUBLEs directly
	to memory for !TARGET_MEMORY_MISMATCH_STALL.
	(*movdf_internal_rex64): Do not penalize F->r alternative.
	(*movdf_internal):  Penalize FYd*r->o alternative to prevent partial
	memory stalls.  Generate SSE and x87 CONST_DOUBLE immediates only
	when optimizing function for size.  Do not move CONST_DOUBLEs
	directly to memory for !TARGET_MEMORY_MISMATCH_STALL.
	(FP move splitters): Merge {TF,XF,DF}mode move splitters.  Do not
	handle SUBREGs.  Do not check for MEM_P operands in the insn condition,
	check for ANY_FP_REGNO_P instead.
	* config/i386/constraints.md (Yd): Enable GENERAL_REGS for
	TARGET_64BIT and for TARGET_INTEGER_DFMODE_MOVES when optimizing
	function for speed.
	* config/i386/i386.c (ix86_option_override_internal): Do not
	set TARGET_INTEGER_DFMODE_MOVES here.

From-SVN: r174453
This commit is contained in:
Uros Bizjak 2011-05-30 22:55:30 +02:00
parent a0cd843f4d
commit b17d542637
4 changed files with 66 additions and 99 deletions
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24
gcc/ChangeLog
View File

@ -1,3 +1,22 @@
2011-05-30 Uros Bizjak <ubizjak@gmail.com>
* config/i386/i386.md (*movxf_internal): Penalize FYx*r->o alternative
to prevent partial memory stalls. Do not move CONST_DOUBLEs directly
to memory for !TARGET_MEMORY_MISMATCH_STALL.
(*movdf_internal_rex64): Do not penalize F->r alternative.
(*movdf_internal): Penalize FYd*r->o alternative to prevent partial
memory stalls. Generate SSE and x87 CONST_DOUBLE immediates only
when optimizing function for size. Do not move CONST_DOUBLEs
directly to memory for !TARGET_MEMORY_MISMATCH_STALL.
(FP move splitters): Merge {TF,XF,DF}mode move splitters. Do not
handle SUBREGs. Do not check for MEM_P operands in the insn condition,
check for ANY_FP_REGNO_P instead.
* config/i386/constraints.md (Yd): Enable GENERAL_REGS for
TARGET_64BIT and for TARGET_INTEGER_DFMODE_MOVES when optimizing
function for speed.
* config/i386/i386.c (ix86_option_override_internal): Do not
set TARGET_INTEGER_DFMODE_MOVES here.
2011-05-30 H.J. Lu <hongjiu.lu@intel.com>
PR target/49168
@ -18,7 +37,7 @@
(gimple_expand_builtin_pow): Reorder args for
build_and_insert_call; use build_and_insert_binop; add more
optimizations for fractional exponents.
2011-05-30 Nathan Froyd <froydnj@gcc.gnu.org>
PR bootstrap/49190
@ -86,8 +105,7 @@
PR tree-optimization/49199
* tree-vect-loop.c (vect_is_slp_reduction): Check that the
non-reduction operands are either defined in the loop or
by induction.
non-reduction operands are either defined in the loop or by induction.
2011-05-29 Xinliang David Li <davidxl@google.com>

4
gcc/config/i386/constraints.md
View File

@ -108,7 +108,9 @@
"@internal Any MMX register, when inter-unit moves are enabled.")
(define_register_constraint "Yd"
"TARGET_INTEGER_DFMODE_MOVES ? GENERAL_REGS : NO_REGS"
"(TARGET_64BIT
|| (TARGET_INTEGER_DFMODE_MOVES && optimize_function_for_speed_p (cfun)))
? GENERAL_REGS : NO_REGS"
"@internal Any integer register when integer DFmode moves are enabled.")
(define_register_constraint "Yx"

7
gcc/config/i386/i386.c
View File

@ -3947,13 +3947,6 @@ ix86_option_override_internal (bool main_args_p)
if (!TARGET_80387)
target_flags |= MASK_NO_FANCY_MATH_387;
/* On 32bit targets, avoid moving DFmode values in
integer registers when optimizing for size. */
if (TARGET_64BIT)
target_flags |= TARGET_INTEGER_DFMODE_MOVES;
else if (optimize_size)
target_flags &= ~TARGET_INTEGER_DFMODE_MOVES;
/* Turn on MMX builtins for -msse. */
if (TARGET_SSE)
{

130
gcc/config/i386/i386.md
View File

@ -2833,8 +2833,8 @@
"ix86_expand_move (<MODE>mode, operands); DONE;")
(define_insn "*movtf_internal"
[(set (match_operand:TF 0 "nonimmediate_operand" "=x,m,x,?r,?o")
(match_operand:TF 1 "general_operand" "xm,x,C,roF,Fr"))]
[(set (match_operand:TF 0 "nonimmediate_operand" "=x,m,x,?r ,?o")
(match_operand:TF 1 "general_operand" "xm,x,C,roF,Fr"))]
"TARGET_SSE2
&& !(MEM_P (operands[0]) && MEM_P (operands[1]))"
{
@ -2890,24 +2890,19 @@
(const_string "TI"))]
(const_string "DI")))])
(define_split
[(set (match_operand:TF 0 "nonimmediate_operand" "")
(match_operand:TF 1 "general_operand" ""))]
"reload_completed
&& !(SSE_REG_P (operands[0]) || SSE_REG_P (operands[1]))"
[(const_int 0)]
"ix86_split_long_move (operands); DONE;")
;; Possible store forwarding (partial memory) stall in alternative 4.
(define_insn "*movxf_internal"
[(set (match_operand:XF 0 "nonimmediate_operand" "=f,m,f,Yx*r ,o")
[(set (match_operand:XF 0 "nonimmediate_operand" "=f,m,f,Yx*r ,!o")
(match_operand:XF 1 "general_operand" "fm,f,G,Yx*roF,FYx*r"))]
"!(MEM_P (operands[0]) && MEM_P (operands[1]))
&& (!can_create_pseudo_p ()
|| (ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_LARGE)
|| GET_CODE (operands[1]) != CONST_DOUBLE
|| (optimize_function_for_size_p (cfun)
&& standard_80387_constant_p (operands[1]) > 0)
|| memory_operand (operands[0], XFmode))"
&& standard_80387_constant_p (operands[1]) > 0
&& !memory_operand (operands[0], XFmode))
|| (!TARGET_MEMORY_MISMATCH_STALL
&& memory_operand (operands[0], XFmode)))"
{
switch (which_alternative)
{
@ -2918,8 +2913,10 @@
case 2:
return standard_80387_constant_opcode (operands[1]);
case 3: case 4:
case 3:
case 4:
return "#";
default:
gcc_unreachable ();
}
@ -2927,25 +2924,11 @@
[(set_attr "type" "fmov,fmov,fmov,multi,multi")
(set_attr "mode" "XF,XF,XF,SI,SI")])
(define_split
[(set (match_operand:XF 0 "nonimmediate_operand" "")
(match_operand:XF 1 "general_operand" ""))]
"reload_completed
&& !(MEM_P (operands[0]) && MEM_P (operands[1]))
&& ! (FP_REG_P (operands[0]) ||
(GET_CODE (operands[0]) == SUBREG
&& FP_REG_P (SUBREG_REG (operands[0]))))
&& ! (FP_REG_P (operands[1]) ||
(GET_CODE (operands[1]) == SUBREG
&& FP_REG_P (SUBREG_REG (operands[1]))))"
[(const_int 0)]
"ix86_split_long_move (operands); DONE;")
(define_insn "*movdf_internal_rex64"
[(set (match_operand:DF 0 "nonimmediate_operand"
"=f,m,f,r ,m,!r,!m,Y2*x,Y2*x,Y2*x,m ,Yi,r ")
"=f,m,f,r ,m,r,!m,Y2*x,Y2*x,Y2*x,m ,Yi,r ")
(match_operand:DF 1 "general_operand"
"fm,f,G,rm,r,F ,F ,C ,Y2*x,m ,Y2*x,r ,Yi"))]
"fm,f,G,rm,r,F,F ,C ,Y2*x,m ,Y2*x,r ,Yi"))]
"TARGET_64BIT && !(MEM_P (operands[0]) && MEM_P (operands[1]))
&& (!can_create_pseudo_p ()
|| (ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_LARGE)
@ -3093,21 +3076,20 @@
;; Possible store forwarding (partial memory) stall in alternative 4.
(define_insn "*movdf_internal"
[(set (match_operand:DF 0 "nonimmediate_operand"
"=f,m,f,Yd*r ,o ,Y2*x,Y2*x,Y2*x,m ")
"=f,m,f,Yd*r ,!o ,Y2*x,Y2*x,Y2*x,m ")
(match_operand:DF 1 "general_operand"
"fm,f,G,Yd*roF,FYd*r,C ,Y2*x,m ,Y2*x"))]
"!TARGET_64BIT && !(MEM_P (operands[0]) && MEM_P (operands[1]))
&& (!can_create_pseudo_p ()
|| (ix86_cmodel == CM_MEDIUM || ix86_cmodel == CM_LARGE)
|| GET_CODE (operands[1]) != CONST_DOUBLE
|| (!TARGET_INTEGER_DFMODE_MOVES
|| (optimize_function_for_size_p (cfun)
&& ((!(TARGET_SSE2 && TARGET_SSE_MATH)
&& standard_80387_constant_p (operands[1]) > 0)
|| (TARGET_SSE2 && TARGET_SSE_MATH
&& standard_sse_constant_p (operands[1])))
&& !memory_operand (operands[0], DFmode))
|| ((TARGET_INTEGER_DFMODE_MOVES
|| !TARGET_MEMORY_MISMATCH_STALL)
|| (!TARGET_MEMORY_MISMATCH_STALL
&& memory_operand (operands[0], DFmode)))"
{
switch (which_alternative)
@ -3228,20 +3210,6 @@
]
(const_string "DF")))])
(define_split
[(set (match_operand:DF 0 "nonimmediate_operand" "")
(match_operand:DF 1 "general_operand" ""))]
"reload_completed
&& !(MEM_P (operands[0]) && MEM_P (operands[1]))
&& ! (ANY_FP_REG_P (operands[0]) ||
(GET_CODE (operands[0]) == SUBREG
&& ANY_FP_REG_P (SUBREG_REG (operands[0]))))
&& ! (ANY_FP_REG_P (operands[1]) ||
(GET_CODE (operands[1]) == SUBREG
&& ANY_FP_REG_P (SUBREG_REG (operands[1]))))"
[(const_int 0)]
"ix86_split_long_move (operands); DONE;")
(define_insn "*movsf_internal"
[(set (match_operand:SF 0 "nonimmediate_operand"
"=f,m,f,r ,m ,x,x,x ,m,!*y,!m,!*y,?Yi,?r,!*Ym,!r")
@ -3344,31 +3312,19 @@
[(set (match_operand 0 "register_operand" "")
(match_operand 1 "memory_operand" ""))]
"reload_completed
&& MEM_P (operands[1])
&& (GET_MODE (operands[0]) == TFmode
|| GET_MODE (operands[0]) == XFmode
|| GET_MODE (operands[0]) == DFmode
|| GET_MODE (operands[0]) == SFmode)
&& ANY_FP_REGNO_P (REGNO (operands[0]))
&& (operands[2] = find_constant_src (insn))"
[(set (match_dup 0) (match_dup 2))]
{
rtx c = operands[2];
rtx r = operands[0];
int r = REGNO (operands[0]);
if (GET_CODE (r) == SUBREG)
r = SUBREG_REG (r);
if (SSE_REG_P (r))
{
if (!standard_sse_constant_p (c))
FAIL;
}
else if (FP_REG_P (r))
{
if (standard_80387_constant_p (c) < 1)
FAIL;
}
else if (MMX_REG_P (r))
if ((SSE_REGNO_P (r) && !standard_sse_constant_p (c))
|| (FP_REGNO_P (r) && standard_80387_constant_p (c) < 1))
FAIL;
})
@ -3376,31 +3332,18 @@
[(set (match_operand 0 "register_operand" "")
(float_extend (match_operand 1 "memory_operand" "")))]
"reload_completed
&& MEM_P (operands[1])
&& (GET_MODE (operands[0]) == TFmode
|| GET_MODE (operands[0]) == XFmode
|| GET_MODE (operands[0]) == DFmode
|| GET_MODE (operands[0]) == SFmode)
|| GET_MODE (operands[0]) == DFmode)
&& ANY_FP_REGNO_P (REGNO (operands[0]))
&& (operands[2] = find_constant_src (insn))"
[(set (match_dup 0) (match_dup 2))]
{
rtx c = operands[2];
rtx r = operands[0];
int r = REGNO (operands[0]);
if (GET_CODE (r) == SUBREG)
r = SUBREG_REG (r);
if (SSE_REG_P (r))
{
if (!standard_sse_constant_p (c))
FAIL;
}
else if (FP_REG_P (r))
{
if (standard_80387_constant_p (c) < 1)
FAIL;
}
else if (MMX_REG_P (r))
if ((SSE_REGNO_P (r) && !standard_sse_constant_p (c))
|| (FP_REGNO_P (r) && standard_80387_constant_p (c) < 1))
FAIL;
})
@ -3424,6 +3367,17 @@
operands[1] = CONST1_RTX (<MODE>mode);
})
(define_split
[(set (match_operand 0 "nonimmediate_operand" "")
(match_operand 1 "general_operand" ""))]
"reload_completed
&& (GET_MODE (operands[0]) == TFmode
|| GET_MODE (operands[0]) == XFmode
|| GET_MODE (operands[0]) == DFmode)
&& !(ANY_FP_REG_P (operands[0]) || ANY_FP_REG_P (operands[1]))"
[(const_int 0)]
"ix86_split_long_move (operands); DONE;")
(define_insn "swapxf"
[(set (match_operand:XF 0 "register_operand" "+f")
(match_operand:XF 1 "register_operand" "+f"))
@ -16663,7 +16617,7 @@
[(set (match_operand:SWI 0 "push_operand" "")
(match_operand:SWI 1 "memory_operand" ""))
(match_scratch:SWI 2 "<r>")]
"optimize_insn_for_speed_p () && !TARGET_PUSH_MEMORY
"!(TARGET_PUSH_MEMORY || optimize_insn_for_size_p ())
&& !RTX_FRAME_RELATED_P (peep2_next_insn (0))"
[(set (match_dup 2) (match_dup 1))
(set (match_dup 0) (match_dup 2))])
@ -16674,7 +16628,7 @@
[(set (match_operand:SF 0 "push_operand" "")
(match_operand:SF 1 "memory_operand" ""))
(match_scratch:SF 2 "r")]
"optimize_insn_for_speed_p () && !TARGET_PUSH_MEMORY
"!(TARGET_PUSH_MEMORY || optimize_insn_for_size_p ())
&& !RTX_FRAME_RELATED_P (peep2_next_insn (0))"
[(set (match_dup 2) (match_dup 1))
(set (match_dup 0) (match_dup 2))])
@ -16826,7 +16780,7 @@
[(match_dup 0)
(match_operand:SI 1 "memory_operand" "")]))
(clobber (reg:CC FLAGS_REG))])]
"optimize_insn_for_speed_p () && ! TARGET_READ_MODIFY"
"!(TARGET_READ_MODIFY || optimize_insn_for_size_p ())"
[(set (match_dup 2) (match_dup 1))
(parallel [(set (match_dup 0)
(match_op_dup 3 [(match_dup 0) (match_dup 2)]))
@ -16839,7 +16793,7 @@
[(match_operand:SI 1 "memory_operand" "")
(match_dup 0)]))
(clobber (reg:CC FLAGS_REG))])]
"optimize_insn_for_speed_p () && ! TARGET_READ_MODIFY"
"!(TARGET_READ_MODIFY || optimize_insn_for_size_p ())"
[(set (match_dup 2) (match_dup 1))
(parallel [(set (match_dup 0)
(match_op_dup 3 [(match_dup 2) (match_dup 0)]))
@ -16892,7 +16846,7 @@
[(match_dup 0)
(match_operand:SI 1 "nonmemory_operand" "")]))
(clobber (reg:CC FLAGS_REG))])]
"optimize_insn_for_speed_p () && ! TARGET_READ_MODIFY_WRITE
"!(TARGET_READ_MODIFY_WRITE || optimize_insn_for_size_p ())
/* Do not split stack checking probes. */
&& GET_CODE (operands[3]) != IOR && operands[1] != const0_rtx"
[(set (match_dup 2) (match_dup 0))
@ -16908,7 +16862,7 @@
[(match_operand:SI 1 "nonmemory_operand" "")
(match_dup 0)]))
(clobber (reg:CC FLAGS_REG))])]
"optimize_insn_for_speed_p () && ! TARGET_READ_MODIFY_WRITE
"!(TARGET_READ_MODIFY_WRITE || optimize_insn_for_size_p ())
/* Do not split stack checking probes. */
&& GET_CODE (operands[3]) != IOR && operands[1] != const0_rtx"
[(set (match_dup 2) (match_dup 0))