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mips.c (mips_valid_offset_p): New function.

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gcc/
	* config/mips/mips.c (mips_valid_offset_p): New function.
	(mips_valid_lo_sum_p): Likewise.
	(mips_classify_address): Use them.
	(mips_force_address): New function.
	(mips_legitimize_address): Use it.
	* config/mips/mips.md (MOVE128): New mode iterator.
	(movtf): Require TARGET_64BIT.  Remove empty strings.
	(*movtf_internal): Rename to...
	(*movtf): ...this and require !TARGET_MIPS16.  Use "m" instead
	of "R" and use {,fp}{load,store} attributes instead of "multi".
	Use a separate define_split.
	(*movtf_mips16): New pattern.

gcc/testsuite/
	* gcc.target/mips/fpr-moves-7.c: New test.
	* gcc.target/mips/fpr-moves-8.c: New test.

From-SVN: r136253
This commit is contained in:
Richard Sandiford 2008-06-01 13:01:23 +00:00 committed by Richard Sandiford
parent 2f7e2abbd1
commit fa21a761a6
6 changed files with 197 additions and 22 deletions
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15
gcc/ChangeLog
View File

@ -1,3 +1,18 @@
2008-06-01 Richard Sandiford <rdsandiford@googlemail.com>
* config/mips/mips.c (mips_valid_offset_p): New function.
(mips_valid_lo_sum_p): Likewise.
(mips_classify_address): Use them.
(mips_force_address): New function.
(mips_legitimize_address): Use it.
* config/mips/mips.md (MOVE128): New mode iterator.
(movtf): Require TARGET_64BIT. Remove empty strings.
(*movtf_internal): Rename to...
(*movtf): ...this and require !TARGET_MIPS16. Use "m" instead
of "R" and use {,fp}{load,store} attributes instead of "multi".
Use a separate define_split.
(*movtf_mips16): New pattern.
2008-06-01 Richard Sandiford <rdsandiford@googlemail.com>
* config/mips/mips-protos.h (mips_expand_before_return): Declare.

70
gcc/config/mips/mips.c
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@ -1809,6 +1809,51 @@ mips_valid_base_register_p (rtx x, enum machine_mode mode, bool strict_p)
&& mips_regno_mode_ok_for_base_p (REGNO (x), mode, strict_p));
}
/* Return true if, for every base register BASE_REG, (plus BASE_REG X)
can address a value of mode MODE. */
static bool
mips_valid_offset_p (rtx x, enum machine_mode mode)
{
/* Check that X is a signed 16-bit number. */
if (!const_arith_operand (x, Pmode))
return false;
/* We may need to split multiword moves, so make sure that every word
is accessible. */
if (GET_MODE_SIZE (mode) > UNITS_PER_WORD
&& !SMALL_OPERAND (INTVAL (x) + GET_MODE_SIZE (mode) - UNITS_PER_WORD))
return false;
return true;
}
/* Return true if a LO_SUM can address a value of mode MODE when the
LO_SUM symbol has type SYMBOL_TYPE. */
static bool
mips_valid_lo_sum_p (enum mips_symbol_type symbol_type, enum machine_mode mode)
{
/* Check that symbols of type SYMBOL_TYPE can be used to access values
of mode MODE. */
if (mips_symbol_insns (symbol_type, mode) == 0)
return false;
/* Check that there is a known low-part relocation. */
if (mips_lo_relocs[symbol_type] == NULL)
return false;
/* We may need to split multiword moves, so make sure that each word
can be accessed without inducing a carry. This is mainly needed
for o64, which has historically only guaranteed 64-bit alignment
for 128-bit types. */
if (GET_MODE_SIZE (mode) > UNITS_PER_WORD
&& GET_MODE_BITSIZE (mode) > GET_MODE_ALIGNMENT (mode))
return false;
return true;
}
/* Return true if X is a valid address for machine mode MODE. If it is,
fill in INFO appropriately. STRICT_P is true if REG_OK_STRICT is in
effect. */
@ -1831,7 +1876,7 @@ mips_classify_address (struct mips_address_info *info, rtx x,
info->reg = XEXP (x, 0);
info->offset = XEXP (x, 1);
return (mips_valid_base_register_p (info->reg, mode, strict_p)
&& const_arith_operand (info->offset, VOIDmode));
&& mips_valid_offset_p (info->offset, mode));
case LO_SUM:
info->type = ADDRESS_LO_SUM;
@ -1849,8 +1894,7 @@ mips_classify_address (struct mips_address_info *info, rtx x,
info->symbol_type
= mips_classify_symbolic_expression (info->offset, SYMBOL_CONTEXT_MEM);
return (mips_valid_base_register_p (info->reg, mode, strict_p)
&& mips_symbol_insns (info->symbol_type, mode) > 0
&& mips_lo_relocs[info->symbol_type] != 0);
&& mips_valid_lo_sum_p (info->symbol_type, mode));
case CONST_INT:
/* Small-integer addresses don't occur very often, but they
@ -2473,6 +2517,16 @@ mips_legitimize_tls_address (rtx loc)
return dest;
}
/* If X is not a valid address for mode MODE, force it into a register. */
static rtx
mips_force_address (rtx x, enum machine_mode mode)
{
if (!mips_legitimate_address_p (mode, x, false))
x = force_reg (Pmode, x);
return x;
}
/* This function is used to implement LEGITIMIZE_ADDRESS. If *XLOC can
be legitimized in a way that the generic machinery might not expect,
put the new address in *XLOC and return true. MODE is the mode of
@ -2481,7 +2535,7 @@ mips_legitimize_tls_address (rtx loc)
bool
mips_legitimize_address (rtx *xloc, enum machine_mode mode)
{
rtx base;
rtx base, addr;
HOST_WIDE_INT offset;
if (mips_tls_symbol_p (*xloc))
@ -2491,8 +2545,11 @@ mips_legitimize_address (rtx *xloc, enum machine_mode mode)
}
/* See if the address can split into a high part and a LO_SUM. */
if (mips_split_symbol (NULL, *xloc, mode, xloc))
if (mips_split_symbol (NULL, *xloc, mode, &addr))
{
*xloc = mips_force_address (addr, mode);
return true;
}
/* Handle BASE + OFFSET using mips_add_offset. */
mips_split_plus (*xloc, &base, &offset);
@ -2500,7 +2557,8 @@ mips_legitimize_address (rtx *xloc, enum machine_mode mode)
{
if (!mips_valid_base_register_p (base, mode, false))
base = copy_to_mode_reg (Pmode, base);
*xloc = mips_add_offset (NULL, base, offset);
addr = mips_add_offset (NULL, base, offset);
*xloc = mips_force_address (addr, mode);
return true;
}
return false;

51
gcc/config/mips/mips.md
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@ -496,6 +496,9 @@
(define_mode_iterator MOVE64
[DI DF (V2SF "TARGET_HARD_FLOAT && TARGET_PAIRED_SINGLE_FLOAT")])
;; 128-bit modes for which we provide move patterns on 64-bit targets.
(define_mode_iterator MOVE128 [TF])
;; This mode iterator allows the QI and HI extension patterns to be
;; defined from the same template.
(define_mode_iterator SHORT [QI HI])
@ -4064,28 +4067,36 @@
;; 128-bit floating point moves
(define_expand "movtf"
[(set (match_operand:TF 0 "")
(match_operand:TF 1 ""))]
""
[(set (match_operand:TF 0)
(match_operand:TF 1))]
"TARGET_64BIT"
{
if (mips_legitimize_move (TFmode, operands[0], operands[1]))
DONE;
})
;; This pattern handles both hard- and soft-float cases.
(define_insn_and_split "*movtf_internal"
[(set (match_operand:TF 0 "nonimmediate_operand" "=d,R,f,dR")
(match_operand:TF 1 "move_operand" "dGR,dG,dGR,f"))]
""
(define_insn "*movtf"
[(set (match_operand:TF 0 "nonimmediate_operand" "=d,d,m,f,d,f,m")
(match_operand:TF 1 "move_operand" "dG,m,dG,dG,f,m,f"))]
"TARGET_64BIT
&& !TARGET_MIPS16
&& (register_operand (operands[0], TFmode)
|| reg_or_0_operand (operands[1], TFmode))"
"#"
"&& reload_completed"
[(const_int 0)]
{
mips_split_doubleword_move (operands[0], operands[1]);
DONE;
}
[(set_attr "type" "multi")
(set_attr "length" "16")])
[(set_attr "type" "multi,load,store,multi,multi,fpload,fpstore")
(set_attr "length" "8,*,*,8,8,*,*")])
(define_insn "*movtf_mips16"
[(set (match_operand:TF 0 "nonimmediate_operand" "=d,y,d,d,m")
(match_operand:TF 1 "move_operand" "d,d,y,m,d"))]
"TARGET_64BIT
&& TARGET_MIPS16
&& (register_operand (operands[0], TFmode)
|| register_operand (operands[1], TFmode))"
"#"
[(set_attr "type" "multi,multi,multi,load,store")
(set_attr "length" "8,8,8,*,*")])
(define_split
[(set (match_operand:MOVE64 0 "nonimmediate_operand")
@ -4098,6 +4109,16 @@
DONE;
})
(define_split
[(set (match_operand:MOVE128 0 "nonimmediate_operand")
(match_operand:MOVE128 1 "move_operand"))]
"TARGET_64BIT && reload_completed"
[(const_int 0)]
{
mips_split_doubleword_move (operands[0], operands[1]);
DONE;
})
;; When generating mips16 code, split moves of negative constants into
;; a positive "li" followed by a negation.
(define_split

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2008-06-01 Richard Sandiford <rdsandiford@googlemail.com>
* gcc.target/mips/fpr-moves-7.c: New test.
* gcc.target/mips/fpr-moves-8.c: New test.
2008-05-30 Bernd Schmidt <bernd.schmidt@analog.com>
* gcc.target/bfin/mcpu-default.c: Adjust for recent changes: default

38
gcc/testsuite/gcc.target/mips/fpr-moves-7.c Normal file
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@ -0,0 +1,38 @@
/* { dg-do compile { target mips16_attribute } } */
/* { dg-mips-options "-mabi=64 -msoft-float -O2 -EL" } */
/* { dg-add-options mips16_attribute } */
extern long double g[16];
extern unsigned char gstuff[0x10000];
NOMIPS16 long double
foo (long double i1, long double i2, long double i3, long double i4,
long double *x, unsigned char *lstuff)
{
g[0] = i1;
g[1] = i2;
g[2] = i3;
g[3] = i4;
x[0] = x[4];
x[1] = 0;
x[2] = 1.0;
x[3] = g[4];
x[4] = *(long double *) (lstuff + 0x7fff);
return *(long double *) (gstuff + 0x7fff);
}
MIPS16 long double
bar (long double i1, long double i2, long double i3, long double i4,
long double *x, unsigned char *lstuff)
{
g[0] = i1;
g[1] = i2;
g[2] = i3;
g[3] = i4;
x[0] = x[4];
x[1] = 0;
x[2] = 1.0;
x[3] = g[4];
x[4] = *(long double *) (lstuff + 0x7fff);
return *(long double *) (gstuff + 0x7fff);
}

38
gcc/testsuite/gcc.target/mips/fpr-moves-8.c Normal file
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@ -0,0 +1,38 @@
/* { dg-do compile { target mips16_attribute } } */
/* { dg-mips-options "-mabi=64 -msoft-float -O2 -EB" } */
/* { dg-add-options mips16_attribute } */
extern long double g[16];
extern unsigned char gstuff[0x10000];
NOMIPS16 long double
foo (long double i1, long double i2, long double i3, long double i4,
long double *x, unsigned char *lstuff)
{
g[0] = i1;
g[1] = i2;
g[2] = i3;
g[3] = i4;
x[0] = x[4];
x[1] = 0;
x[2] = 1.0;
x[3] = g[4];
x[4] = *(long double *) (lstuff + 0x7fff);
return *(long double *) (gstuff + 0x7fff);
}
MIPS16 long double
bar (long double i1, long double i2, long double i3, long double i4,
long double *x, unsigned char *lstuff)
{
g[0] = i1;
g[1] = i2;
g[2] = i3;
g[3] = i4;
x[0] = x[4];
x[1] = 0;
x[2] = 1.0;
x[3] = g[4];
x[4] = *(long double *) (lstuff + 0x7fff);
return *(long double *) (gstuff + 0x7fff);
}