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Add CONST1_RTX (vector mode) support.

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* emit-rtl.c (gen_const_vector): Renamed from gen_const_vector_0.
Add integer argument named constant.  Use const_tiny_rtx instead of
CONST0_RTX.
(gen_rtx_CONST_VECTOR): Rewrite to handle checks for both CONST0_RTX
and CONST1_RTX.
(init_emit_once): Fix users of gen_const_vector.  Set CONST1_RTX for
vector types.
* expr.c (const_vector_from_tree): Call gen_rtx_CONST_VECTOR instead
of gen_rtx_raw_CONST_VECTOR.

From-SVN: r87337
This commit is contained in:
James E Wilson 2004-09-11 01:49:40 +00:00 committed by Jim Wilson
parent 769da81848
commit a73b091d78
3 changed files with 49 additions and 15 deletions
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12
gcc/ChangeLog
View File

@ -1,3 +1,15 @@
2004-09-10 James E Wilson <wilson@specifixinc.com>
* emit-rtl.c (gen_const_vector): Renamed from gen_const_vector_0.
Add integer argument named constant. Use const_tiny_rtx instead of
CONST0_RTX.
(gen_rtx_CONST_VECTOR): Rewrite to handle checks for both CONST0_RTX
and CONST1_RTX.
(init_emit_once): Fix users of gen_const_vector. Set CONST1_RTX for
vector types.
* expr.c (const_vector_from_tree): Call gen_rtx_CONST_VECTOR instead
of gen_rtx_raw_CONST_VECTOR.
2004-09-10 Eric Christopher <echristo@redhat.com>
PR c/16046

50
gcc/emit-rtl.c
View File

@ -194,7 +194,7 @@ static hashval_t reg_attrs_htab_hash (const void *);
static int reg_attrs_htab_eq (const void *, const void *);
static reg_attrs *get_reg_attrs (tree, int);
static tree component_ref_for_mem_expr (tree);
static rtx gen_const_vector_0 (enum machine_mode);
static rtx gen_const_vector (enum machine_mode, int);
static rtx gen_complex_constant_part (enum machine_mode, rtx, int);
static void copy_rtx_if_shared_1 (rtx *orig);
@ -5162,10 +5162,10 @@ init_emit (void)
#endif
}
/* Generate the constant 0. */
/* Generate a vector constant for mode MODE and constant value CONSTANT. */
static rtx
gen_const_vector_0 (enum machine_mode mode)
gen_const_vector (enum machine_mode mode, int constant)
{
rtx tem;
rtvec v;
@ -5177,28 +5177,44 @@ gen_const_vector_0 (enum machine_mode mode)
v = rtvec_alloc (units);
/* We need to call this function after we to set CONST0_RTX first. */
gcc_assert (CONST0_RTX (inner));
/* We need to call this function after we set the scalar const_tiny_rtx
entries. */
gcc_assert (const_tiny_rtx[constant][(int) inner]);
for (i = 0; i < units; ++i)
RTVEC_ELT (v, i) = CONST0_RTX (inner);
RTVEC_ELT (v, i) = const_tiny_rtx[constant][(int) inner];
tem = gen_rtx_raw_CONST_VECTOR (mode, v);
return tem;
}
/* Generate a vector like gen_rtx_raw_CONST_VEC, but use the zero vector when
all elements are zero. */
all elements are zero, and the one vector when all elements are one. */
rtx
gen_rtx_CONST_VECTOR (enum machine_mode mode, rtvec v)
{
rtx inner_zero = CONST0_RTX (GET_MODE_INNER (mode));
enum machine_mode inner = GET_MODE_INNER (mode);
int nunits = GET_MODE_NUNITS (mode);
rtx x;
int i;
for (i = GET_MODE_NUNITS (mode) - 1; i >= 0; i--)
if (RTVEC_ELT (v, i) != inner_zero)
return gen_rtx_raw_CONST_VECTOR (mode, v);
return CONST0_RTX (mode);
/* Check to see if all of the elements have the same value. */
x = RTVEC_ELT (v, nunits - 1);
for (i = nunits - 2; i >= 0; i--)
if (RTVEC_ELT (v, i) != x)
break;
/* If the values are all the same, check to see if we can use one of the
standard constant vectors. */
if (i == -1)
{
if (x == CONST0_RTX (inner))
return CONST0_RTX (mode);
else if (x == CONST1_RTX (inner))
return CONST1_RTX (mode);
}
return gen_rtx_raw_CONST_VECTOR (mode, v);
}
/* Create some permanent unique rtl objects shared between all functions.
@ -5352,12 +5368,18 @@ init_emit_once (int line_numbers)
for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_INT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
const_tiny_rtx[0][(int) mode] = gen_const_vector_0 (mode);
{
const_tiny_rtx[0][(int) mode] = gen_const_vector (mode, 0);
const_tiny_rtx[1][(int) mode] = gen_const_vector (mode, 1);
}
for (mode = GET_CLASS_NARROWEST_MODE (MODE_VECTOR_FLOAT);
mode != VOIDmode;
mode = GET_MODE_WIDER_MODE (mode))
const_tiny_rtx[0][(int) mode] = gen_const_vector_0 (mode);
{
const_tiny_rtx[0][(int) mode] = gen_const_vector (mode, 0);
const_tiny_rtx[1][(int) mode] = gen_const_vector (mode, 1);
}
for (i = (int) CCmode; i < (int) MAX_MACHINE_MODE; ++i)
if (GET_MODE_CLASS ((enum machine_mode) i) == MODE_CC)

2
gcc/expr.c
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@ -8822,6 +8822,6 @@ const_vector_from_tree (tree exp)
for (; i < units; ++i)
RTVEC_ELT (v, i) = CONST0_RTX (inner);
return gen_rtx_raw_CONST_VECTOR (mode, v);
return gen_rtx_CONST_VECTOR (mode, v);
}
#include "gt-expr.h"