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altivec: vec_abs and const char
- From: Aldy Hernandez <aldyh at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org, dje at watson dot ibm dot com
- Date: Wed, 6 Feb 2002 17:12:23 +1100
- Subject: altivec: vec_abs and const char
hi david.
i had left vec_abs() and vec_abss() for last because the generate
3 instructions a piece. so they were a bit of on odd-ball.
here's a patch to, finally, implement the last builtins. there is
corresponding code for altivec.h for both C and C++.
i also fixed some minor const char problems i ran into while testing
c++.
things seem to be stabilizing now, and i have a real program running
with C.
ok?
2002-02-06 Aldy Hernandez <aldyh@redhat.com>
* config/rs6000/rs6000.c (altivec_init_builtins): Handle
__builtin_altivec_abs*.
(bdesc_abs): New.
* config/rs6000/rs6000.h (rs6000_builtins): Add
ALTIVEC_BUILTIN_ABS*.
* config/rs6000/altivec.h: Use const char for builtins expecting
literals.
(vec_abs): New versions for C and C++.
(vec_abss): Same.
Index: config/rs6000/rs6000.h
===================================================================
RCS file: /cvs/uberbaum/gcc/config/rs6000/rs6000.h,v
retrieving revision 1.177
diff -c -p -r1.177 rs6000.h
*** rs6000.h 2002/02/04 22:50:56 1.177
--- rs6000.h 2002/02/06 06:11:13
*************** enum rs6000_builtins
*** 2970,2974 ****
ALTIVEC_BUILTIN_VCMPGTSW_P,
ALTIVEC_BUILTIN_VCMPGTUB_P,
ALTIVEC_BUILTIN_VCMPGTUH_P,
! ALTIVEC_BUILTIN_VCMPGTUW_P
};
--- 2970,2981 ----
ALTIVEC_BUILTIN_VCMPGTSW_P,
ALTIVEC_BUILTIN_VCMPGTUB_P,
ALTIVEC_BUILTIN_VCMPGTUH_P,
! ALTIVEC_BUILTIN_VCMPGTUW_P,
! ALTIVEC_BUILTIN_ABSS_V4SI,
! ALTIVEC_BUILTIN_ABSS_V8HI,
! ALTIVEC_BUILTIN_ABSS_V16QI,
! ALTIVEC_BUILTIN_ABS_V4SI,
! ALTIVEC_BUILTIN_ABS_V4SF,
! ALTIVEC_BUILTIN_ABS_V8HI,
! ALTIVEC_BUILTIN_ABS_V16QI
};
Index: config/rs6000/rs6000.c
===================================================================
RCS file: /cvs/uberbaum/gcc/config/rs6000/rs6000.c,v
retrieving revision 1.281
diff -c -p -r1.281 rs6000.c
*** rs6000.c 2002/02/05 02:18:55 1.281
--- rs6000.c 2002/02/06 06:11:17
*************** static rtx rs6000_expand_builtin PARAMS
*** 163,168 ****
--- 163,169 ----
static rtx altivec_expand_builtin PARAMS ((tree, rtx));
static rtx altivec_expand_unop_builtin PARAMS ((enum insn_code, tree, rtx));
static rtx altivec_expand_binop_builtin PARAMS ((enum insn_code, tree, rtx));
+ static rtx altivec_expand_abs_builtin PARAMS ((enum insn_code, tree, rtx));
static rtx altivec_expand_predicate_builtin PARAMS ((enum insn_code, const char *, tree, rtx));
static rtx altivec_expand_ternop_builtin PARAMS ((enum insn_code, tree, rtx));
static rtx altivec_expand_stv_builtin PARAMS ((enum insn_code, tree));
*************** static const struct builtin_description_
*** 3384,3389 ****
--- 3385,3403 ----
{ MASK_ALTIVEC, CODE_FOR_altivec_predicate_v16qi, "*vcmpgtub.", "__builtin_altivec_vcmpgtub_p", ALTIVEC_BUILTIN_VCMPGTUB_P }
};
+ /* ABS* opreations. */
+
+ static const struct builtin_description bdesc_abs[] =
+ {
+ { MASK_ALTIVEC, CODE_FOR_altivec_abs_v4si, "__builtin_altivec_abs_v4si", ALTIVEC_BUILTIN_ABS_V4SI },
+ { MASK_ALTIVEC, CODE_FOR_altivec_abs_v8hi, "__builtin_altivec_abs_v8hi", ALTIVEC_BUILTIN_ABS_V8HI },
+ { MASK_ALTIVEC, CODE_FOR_altivec_abs_v4sf, "__builtin_altivec_abs_v4sf", ALTIVEC_BUILTIN_ABS_V4SF },
+ { MASK_ALTIVEC, CODE_FOR_altivec_abs_v16qi, "__builtin_altivec_abs_v16qi", ALTIVEC_BUILTIN_ABS_V16QI },
+ { MASK_ALTIVEC, CODE_FOR_altivec_abss_v4si, "__builtin_altivec_abss_v4si", ALTIVEC_BUILTIN_ABSS_V4SI },
+ { MASK_ALTIVEC, CODE_FOR_altivec_abss_v8hi, "__builtin_altivec_abss_v8hi", ALTIVEC_BUILTIN_ABSS_V8HI },
+ { MASK_ALTIVEC, CODE_FOR_altivec_abss_v16qi, "__builtin_altivec_abss_v16qi", ALTIVEC_BUILTIN_ABSS_V16QI }
+ };
+
/* Simple unary operations: VECb = foo (unsigned literal) or VECb =
foo (VECa). */
*************** altivec_expand_unop_builtin (icode, argl
*** 3441,3446 ****
--- 3455,3495 ----
}
static rtx
+ altivec_expand_abs_builtin (icode, arglist, target)
+ enum insn_code icode;
+ tree arglist;
+ rtx target;
+ {
+ rtx pat, scratch1, scratch2;
+ tree arg0 = TREE_VALUE (arglist);
+ rtx op0 = expand_expr (arg0, NULL_RTX, VOIDmode, 0);
+ enum machine_mode tmode = insn_data[icode].operand[0].mode;
+ enum machine_mode mode0 = insn_data[icode].operand[1].mode;
+
+ /* If we have invalid arguments, bail out before generating bad rtl. */
+ if (arg0 == error_mark_node)
+ return NULL_RTX;
+
+ if (target == 0
+ || GET_MODE (target) != tmode
+ || ! (*insn_data[icode].operand[0].predicate) (target, tmode))
+ target = gen_reg_rtx (tmode);
+
+ if (! (*insn_data[icode].operand[1].predicate) (op0, mode0))
+ op0 = copy_to_mode_reg (mode0, op0);
+
+ scratch1 = gen_reg_rtx (mode0);
+ scratch2 = gen_reg_rtx (mode0);
+
+ pat = GEN_FCN (icode) (target, op0, scratch1, scratch2);
+ if (! pat)
+ return 0;
+ emit_insn (pat);
+
+ return target;
+ }
+
+ static rtx
altivec_expand_binop_builtin (icode, arglist, target)
enum insn_code icode;
tree arglist;
*************** altivec_expand_builtin (exp, target)
*** 3918,3923 ****
--- 3967,3978 ----
return NULL_RTX;
}
+ /* Expand abs* operations. */
+ d = (struct builtin_description *) bdesc_abs;
+ for (i = 0; i < sizeof (bdesc_abs) / sizeof *d; i++, d++)
+ if (d->code == fcode)
+ return altivec_expand_abs_builtin (d->icode, arglist, target);
+
/* Handle simple unary operations. */
d = (struct builtin_description *) bdesc_1arg;
for (i = 0; i < sizeof (bdesc_1arg) / sizeof *d; i++, d++)
*************** altivec_init_builtins (void)
*** 4304,4309 ****
--- 4359,4376 ----
tree_cons (NULL_TREE, V4SF_type_node,
endlink)));
+ tree v4si_ftype_v4si
+ = build_function_type (V4SI_type_node,
+ tree_cons (NULL_TREE, V4SI_type_node, endlink));
+
+ tree v8hi_ftype_v8hi
+ = build_function_type (V8HI_type_node,
+ tree_cons (NULL_TREE, V8HI_type_node, endlink));
+
+ tree v16qi_ftype_v16qi
+ = build_function_type (V16QI_type_node,
+ tree_cons (NULL_TREE, V16QI_type_node, endlink));
+
tree v8hi_ftype_v16qi_v16qi
= build_function_type (V8HI_type_node,
tree_cons (NULL_TREE, V16QI_type_node,
*************** altivec_init_builtins (void)
*** 4448,4454 ****
def_builtin (MASK_ALTIVEC, "__builtin_altivec_stvehx", void_ftype_v8hi_int_pvoid, ALTIVEC_BUILTIN_STVEHX);
def_builtin (MASK_ALTIVEC, "__builtin_altivec_stvewx", void_ftype_v4si_int_pvoid, ALTIVEC_BUILTIN_STVEWX);
def_builtin (MASK_ALTIVEC, "__builtin_altivec_stvxl", void_ftype_v4si_int_pvoid, ALTIVEC_BUILTIN_STVXL);
!
/* Add the simple ternary operators. */
d = (struct builtin_description *) bdesc_3arg;
for (i = 0; i < sizeof (bdesc_3arg) / sizeof *d; i++, d++)
--- 4515,4521 ----
def_builtin (MASK_ALTIVEC, "__builtin_altivec_stvehx", void_ftype_v8hi_int_pvoid, ALTIVEC_BUILTIN_STVEHX);
def_builtin (MASK_ALTIVEC, "__builtin_altivec_stvewx", void_ftype_v4si_int_pvoid, ALTIVEC_BUILTIN_STVEWX);
def_builtin (MASK_ALTIVEC, "__builtin_altivec_stvxl", void_ftype_v4si_int_pvoid, ALTIVEC_BUILTIN_STVXL);
!
/* Add the simple ternary operators. */
d = (struct builtin_description *) bdesc_3arg;
for (i = 0; i < sizeof (bdesc_3arg) / sizeof *d; i++, d++)
*************** altivec_init_builtins (void)
*** 4692,4697 ****
--- 4759,4794 ----
else
abort ();
+ def_builtin (d->mask, d->name, type, d->code);
+ }
+
+ /* Initialize the abs* operators. */
+ d = (struct builtin_description *) bdesc_abs;
+ for (i = 0; i < sizeof (bdesc_abs) / sizeof *d; i++, d++)
+ {
+ enum machine_mode mode0;
+ tree type;
+
+ mode0 = insn_data[d->icode].operand[0].mode;
+
+ switch (mode0)
+ {
+ case V4SImode:
+ type = v4si_ftype_v4si;
+ break;
+ case V8HImode:
+ type = v8hi_ftype_v8hi;
+ break;
+ case V16QImode:
+ type = v16qi_ftype_v16qi;
+ break;
+ case V4SFmode:
+ type = v4sf_ftype_v4sf;
+ break;
+ default:
+ abort ();
+ }
+
def_builtin (d->mask, d->name, type, d->code);
}
Index: config/rs6000/altivec.h
===================================================================
RCS file: /cvs/uberbaum/gcc/config/rs6000/altivec.h,v
retrieving revision 1.9
diff -c -p -r1.9 altivec.h
*** altivec.h 2002/02/05 23:19:13 1.9
--- altivec.h 2002/02/06 06:11:21
*************** extern int __altivec_link_error_invalid_
*** 70,75 ****
--- 70,121 ----
#ifdef __cplusplus
+ /* vec_abs */
+
+ inline vector signed char
+ vec_abs (vector signed char a1)
+ {
+ return __builtin_altivec_abs_v16qi (a1);
+ }
+
+ inline vector signed short
+ vec_abs (vector signed short a1)
+ {
+ return __builtin_altivec_abs_v8hi (a1);
+ }
+
+ inline vector signed int
+ vec_abs (vector signed int a1)
+ {
+ return __builtin_altivec_abs_v4si (a1);
+ }
+
+ inline vector float
+ vec_abs (vector float a1)
+ {
+ return __builtin_altivec_abs_v4sf (a1);
+ }
+
+ /* vec_abss */
+
+ inline vector signed char
+ vec_abss (vector signed char a1)
+ {
+ return __builtin_altivec_abss_v16qi (a1);
+ }
+
+ inline vector signed short
+ vec_abss (vector signed short a1)
+ {
+ return __builtin_altivec_abss_v8hi (a1);
+ }
+
+ inline vector signed int
+ vec_abss (vector signed int a1)
+ {
+ return __builtin_altivec_abss_v4si (a1);
+ }
+
/* vec_add */
inline vector signed char
*************** vec_cmplt (vector float a1, vector float
*** 621,659 ****
/* vec_ctf */
inline vector float
! vec_ctf (vector unsigned int a1, int a2)
{
! return (vector float) __builtin_altivec_vcfux ((vector signed int) a1, (const char) a2);
}
inline vector float
! vec_ctf (vector signed int a1, int a2)
{
! return (vector float) __builtin_altivec_vcfsx ((vector signed int) a1, (const char) a2);
}
/* vec_cts */
inline vector signed int
! vec_cts (vector float a1, int a2)
{
! return (vector signed int) __builtin_altivec_vctsxs ((vector float) a1, (const char) a2);
}
/* vec_ctu */
inline vector unsigned int
! vec_ctu (vector float a1, int a2)
{
! return (vector unsigned int) __builtin_altivec_vctuxs ((vector float) a1, (const char) a2);
}
/* vec_dss */
inline void
! vec_dss (int a1)
{
! __builtin_altivec_dss ((const char) a1);
}
/* vec_dssall */
--- 667,705 ----
/* vec_ctf */
inline vector float
! vec_ctf (vector unsigned int a1, const char a2)
{
! return (vector float) __builtin_altivec_vcfux ((vector signed int) a1, a2);
}
inline vector float
! vec_ctf (vector signed int a1, const char a2)
{
! return (vector float) __builtin_altivec_vcfsx ((vector signed int) a1, a2);
}
/* vec_cts */
inline vector signed int
! vec_cts (vector float a1, const char a2)
{
! return (vector signed int) __builtin_altivec_vctsxs ((vector float) a1, a2);
}
/* vec_ctu */
inline vector unsigned int
! vec_ctu (vector float a1, const char a2)
{
! return (vector unsigned int) __builtin_altivec_vctuxs ((vector float) a1, a2);
}
/* vec_dss */
inline void
! vec_dss (const char a1)
{
! __builtin_altivec_dss (a1);
}
/* vec_dssall */
*************** vec_dssall ()
*** 667,699 ****
/* vec_dst */
inline void
! vec_dst (void *a1, int a2, int a3)
{
! __builtin_altivec_dst ((void *) a1, a2, (const char) a3);
}
/* vec_dstst */
inline void
! vec_dstst (void *a1, int a2, int a3)
{
! __builtin_altivec_dstst ((void *) a1, a2, (const char) a3);
}
/* vec_dststt */
inline void
! vec_dststt (void *a1, int a2, int a3)
{
! __builtin_altivec_dststt ((void *) a1, a2, (const char) a3);
}
/* vec_dstt */
inline void
! vec_dstt (void *a1, int a2, int a3)
{
! __builtin_altivec_dstt ((void *) a1, a2, (const char) a3);
}
/* vec_expte */
--- 713,745 ----
/* vec_dst */
inline void
! vec_dst (void *a1, int a2, const char a3)
{
! __builtin_altivec_dst ((void *) a1, a2, a3);
}
/* vec_dstst */
inline void
! vec_dstst (void *a1, int a2, const char a3)
{
! __builtin_altivec_dstst ((void *) a1, a2, a3);
}
/* vec_dststt */
inline void
! vec_dststt (void *a1, int a2, const char a3)
{
! __builtin_altivec_dststt ((void *) a1, a2, a3);
}
/* vec_dstt */
inline void
! vec_dstt (void *a1, int a2, const char a3)
{
! __builtin_altivec_dstt ((void *) a1, a2, a3);
}
/* vec_expte */
*************** vec_sl (vector unsigned int a1, vector u
*** 1923,1967 ****
/* vec_sld */
inline vector float
! vec_sld (vector float a1, vector float a2, int a3)
{
! return (vector float) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
inline vector signed int
! vec_sld (vector signed int a1, vector signed int a2, int a3)
{
! return (vector signed int) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
inline vector unsigned int
! vec_sld (vector unsigned int a1, vector unsigned int a2, int a3)
{
! return (vector unsigned int) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
inline vector signed short
! vec_sld (vector signed short a1, vector signed short a2, int a3)
{
! return (vector signed short) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
inline vector unsigned short
! vec_sld (vector unsigned short a1, vector unsigned short a2, int a3)
{
! return (vector unsigned short) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
inline vector signed char
! vec_sld (vector signed char a1, vector signed char a2, int a3)
{
! return (vector signed char) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
inline vector unsigned char
! vec_sld (vector unsigned char a1, vector unsigned char a2, int a3)
{
! return (vector unsigned char) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, (const char) a3);
}
/* vec_sll */
--- 1969,2013 ----
/* vec_sld */
inline vector float
! vec_sld (vector float a1, vector float a2, const char a3)
{
! return (vector float) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
inline vector signed int
! vec_sld (vector signed int a1, vector signed int a2, const char a3)
{
! return (vector signed int) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
inline vector unsigned int
! vec_sld (vector unsigned int a1, vector unsigned int a2, const char a3)
{
! return (vector unsigned int) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
inline vector signed short
! vec_sld (vector signed short a1, vector signed short a2, const char a3)
{
! return (vector signed short) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
inline vector unsigned short
! vec_sld (vector unsigned short a1, vector unsigned short a2, const char a3)
{
! return (vector unsigned short) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
inline vector signed char
! vec_sld (vector signed char a1, vector signed char a2, const char a3)
{
! return (vector signed char) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
inline vector unsigned char
! vec_sld (vector unsigned char a1, vector unsigned char a2, const char a3)
{
! return (vector unsigned char) __builtin_altivec_vsldoi_4si ((vector signed int) a1, (vector signed int) a2, a3);
}
/* vec_sll */
*************** vec_slo (vector unsigned char a1, vector
*** 2163,2255 ****
/* vec_splat */
inline vector signed char
! vec_splat (vector signed char a1, int a2)
{
! return (vector signed char) __builtin_altivec_vspltb ((vector signed char) a1, (const char) a2);
}
inline vector unsigned char
! vec_splat (vector unsigned char a1, int a2)
{
! return (vector unsigned char) __builtin_altivec_vspltb ((vector signed char) a1, (const char) a2);
}
inline vector signed short
! vec_splat (vector signed short a1, int a2)
{
! return (vector signed short) __builtin_altivec_vsplth ((vector signed short) a1, (const char) a2);
}
inline vector unsigned short
! vec_splat (vector unsigned short a1, int a2)
{
! return (vector unsigned short) __builtin_altivec_vsplth ((vector signed short) a1, (const char) a2);
}
inline vector float
! vec_splat (vector float a1, int a2)
{
! return (vector float) __builtin_altivec_vspltw ((vector signed int) a1, (const char) a2);
}
inline vector signed int
! vec_splat (vector signed int a1, int a2)
{
! return (vector signed int) __builtin_altivec_vspltw ((vector signed int) a1, (const char) a2);
}
inline vector unsigned int
! vec_splat (vector unsigned int a1, int a2)
{
! return (vector unsigned int) __builtin_altivec_vspltw ((vector signed int) a1, (const char) a2);
}
/* vec_splat_s8 */
inline vector signed char
! vec_splat_s8 (int a1)
{
! return (vector signed char) __builtin_altivec_vspltisb ((const char) a1);
}
/* vec_splat_s16 */
inline vector signed short
! vec_splat_s16 (int a1)
{
! return (vector signed short) __builtin_altivec_vspltish ((const char) a1);
}
/* vec_splat_s32 */
inline vector signed int
! vec_splat_s32 (int a1)
{
! return (vector signed int) __builtin_altivec_vspltisw ((const char) a1);
}
/* vec_splat_u8 */
inline vector unsigned char
! vec_splat_u8 (int a1)
{
! return (vector unsigned char) __builtin_altivec_vspltisb ((const char) a1);
}
/* vec_splat_u16 */
inline vector unsigned short
! vec_splat_u16 (int a1)
{
! return (vector unsigned short) __builtin_altivec_vspltish ((const char) a1);
}
/* vec_splat_u32 */
inline vector unsigned int
! vec_splat_u32 (int a1)
{
! return (vector unsigned int) __builtin_altivec_vspltisw ((const char) a1);
}
/* vec_sr */
--- 2209,2301 ----
/* vec_splat */
inline vector signed char
! vec_splat (vector signed char a1, const char a2)
{
! return (vector signed char) __builtin_altivec_vspltb ((vector signed char) a1, a2);
}
inline vector unsigned char
! vec_splat (vector unsigned char a1, const char a2)
{
! return (vector unsigned char) __builtin_altivec_vspltb ((vector signed char) a1, a2);
}
inline vector signed short
! vec_splat (vector signed short a1, const char a2)
{
! return (vector signed short) __builtin_altivec_vsplth ((vector signed short) a1, a2);
}
inline vector unsigned short
! vec_splat (vector unsigned short a1, const char a2)
{
! return (vector unsigned short) __builtin_altivec_vsplth ((vector signed short) a1, a2);
}
inline vector float
! vec_splat (vector float a1, const char a2)
{
! return (vector float) __builtin_altivec_vspltw ((vector signed int) a1, a2);
}
inline vector signed int
! vec_splat (vector signed int a1, const char a2)
{
! return (vector signed int) __builtin_altivec_vspltw ((vector signed int) a1, a2);
}
inline vector unsigned int
! vec_splat (vector unsigned int a1, const char a2)
{
! return (vector unsigned int) __builtin_altivec_vspltw ((vector signed int) a1, a2);
}
/* vec_splat_s8 */
inline vector signed char
! vec_splat_s8 (const char a1)
{
! return (vector signed char) __builtin_altivec_vspltisb (a1);
}
/* vec_splat_s16 */
inline vector signed short
! vec_splat_s16 (const char a1)
{
! return (vector signed short) __builtin_altivec_vspltish (a1);
}
/* vec_splat_s32 */
inline vector signed int
! vec_splat_s32 (const char a1)
{
! return (vector signed int) __builtin_altivec_vspltisw (a1);
}
/* vec_splat_u8 */
inline vector unsigned char
! vec_splat_u8 (const char a1)
{
! return (vector unsigned char) __builtin_altivec_vspltisb (a1);
}
/* vec_splat_u16 */
inline vector unsigned short
! vec_splat_u16 (const char a1)
{
! return (vector unsigned short) __builtin_altivec_vspltish (a1);
}
/* vec_splat_u32 */
inline vector unsigned int
! vec_splat_u32 (const char a1)
{
! return (vector unsigned int) __builtin_altivec_vspltisw (a1);
}
/* vec_sr */
*************** struct __vec_step_help<vector float>
*** 4110,4115 ****
--- 4156,4181 ----
/* "... and so I think no man in a century will suffer as greatly as
you will." */
+
+ #define vec_abs(a) \
+ __ch (__un_args_eq (vector signed char, a), \
+ (vector signed char) __builtin_altivec_abs_v16qi ((vector signed char) a), \
+ __ch (__un_args_eq (vector signed short, a), \
+ (vector signed short) __builtin_altivec_abs_v8hi ((vector signed short) a), \
+ __ch (__un_args_eq (vector signed int, a), \
+ (vector signed int) __builtin_altivec_abs_v4si ((vector signed int) a), \
+ __ch (__un_args_eq (vector float, a), \
+ (vector float) __builtin_altivec_abs_v4sf ((vector float) a), \
+ __altivec_link_error_invalid_argument ()))))
+
+ #define vec_abss(a) \
+ __ch (__un_args_eq (vector signed char, a), \
+ (vector signed char) __builtin_altivec_abss_v16qi ((vector signed char) a), \
+ __ch (__un_args_eq (vector signed short, a), \
+ (vector signed short) __builtin_altivec_abss_v8hi ((vector signed short) a), \
+ __ch (__un_args_eq (vector signed int, a), \
+ (vector signed int) __builtin_altivec_abss_v4si ((vector signed int) a), \
+ __altivec_link_error_invalid_argument ())))
#define vec_step(t) \
__ch (__builtin_types_compatible_p (t, vector signed int), 4, \