This patch adds support for the vec_vinsert4b and vec_vextract4b built-in
functions that generate the ISA 3.0 XXINSERTW and XXEXTRACTUW/VEXTUW{L,R}X
instructions. These functions are part of the PowerOpen 64-bit ELF V2 abi.
In doing the work, I noticed the P9V built-in ternary functions incorrectly
were declared to be binary. I have fixed these functions.
The built-ins added are:
long long vec_vextract4b (const vector signed char, const int);
long long vec_vextract4b (const vector unsigned char, const int);
vector signed char vec_insert4b (vector int, vector signed char, const int);
vector unsigned char vec_insert4b (vector unsigned int, vector unsigned char,
const int);
vector signed char vec_insert4b (long long, vector signed char, const int);
vector unsigned char vec_insert4b (long long, vector unsigned char, const int);
Note, the ABI only adds the form of vec_insert4b that takes a vector int as the
first argument. On little endian systems, you have to swap double words to get
the desired element into the scalar position for the XXINSERTW instruction.
I have added a GCC extension to alternatively take a long long (or long in
64-bit) for the value to be inserted, since IMHO, it makes the built-in much
easier to use.
I have done bootstrap builds on a 64-bit power8 little endian system and a
32/64-bit power7 big endian system. There were no regressions. Can I check
this into the GCC trunk?
[gcc]
2016-12-13 Michael Meissner <meiss...@linux.vnet.ibm.com>
* config/rs6000/predicates.md (const_0_to_11_operand): New
predicate, match 0..11.
* config/rs6000/rs6000-builtin.def (BU_P9V_VSX_3): Set built-in
type to ternary, not binary.
(BU_P9V_64BIT_VSX_3): Likewise.
(P9V_BUILTIN_VEXTRACT4B): Add support for vec_vinsert4b and
vec_extract4b non-overloaded built-in functions.
(P9V_BUILTIN_VINSERT4B): Likewise.
(P9V_BUILTIN_VINSERT4B_DI): Likewise.
(P9V_BUILTIN_VEC_VEXTULX): Move to section that adds 2 operand ISA
3.0 built-in functions.
(P9V_BUILTIN_VEC_VEXTURX): Likewise.
(P9V_BUILTIN_VEC_VEXTRACT4B): Add support for overloaded
vec_insert4b and vec_extract4 built-in functions.
(P9V_BUILTIN_VEC_VINSERT4B): Likewise.
* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Add
overloaded support for vec_vinsert4b and vec_extract4b.
* config/rs6000/rs6000.c (altivec_expand_builtin): Add checks for
the vec_insert4b and vec_extract4b byte number being a constant in
the range 0..11.
* config/rs6000/vsx.md (UNSPEC_XXEXTRACTUW): New unspec.
(UNSPEC_XXINSERTW): Likewise.
(vextract4b): Add support for the vec_vextract4b built-in
function.
(vextract4b_internal): Likewise.
(vinsert4b): Add support for the vec_insert4b built-in function.
Include both a version that inserts element 1 from a V4SI object
and one that inserts a DI object.
(vinsert4b_internal): Likewise.
(vinsert4b_di): Likewise.
(vinsert4b_di_internal): Likewise.
* config/rs6000/altivec.h (vec_vinsert4b): Support vec_vinsert4b
and vec_extract4b built-in functions.
* doc/extend.doc (PowerPC VSX built-in functions): Document
vec_insert4b and vec_extract4b.
[gcc/testsuite]
2016-12-13 Michael Meissner <meiss...@linux.vnet.ibm.com>
* gcc.target/powerpc/p9-vinsert4b-1.c: New test.
* gcc.target/powerpc/p9-vinsert4b-2.c: Likewise.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.vnet.ibm.com, phone: +1 (978) 899-4797
Index: gcc/config/rs6000/predicates.md
===================================================================
--- gcc/config/rs6000/predicates.md
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/config/rs6000)
(revision 243590)
+++ gcc/config/rs6000/predicates.md (.../gcc/config/rs6000) (working copy)
@@ -210,6 +210,11 @@ (define_predicate "const_0_to_7_operand"
(and (match_code "const_int")
(match_test "IN_RANGE (INTVAL (op), 0, 7)")))
+;; Match op = 0..11
+(define_predicate "const_0_to_11_operand"
+ (and (match_code "const_int")
+ (match_test "IN_RANGE (INTVAL (op), 0, 11)")))
+
;; Match op = 0..15
(define_predicate "const_0_to_15_operand"
(and (match_code "const_int")
Index: gcc/config/rs6000/rs6000-builtin.def
===================================================================
--- gcc/config/rs6000/rs6000-builtin.def
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/config/rs6000)
(revision 243590)
+++ gcc/config/rs6000/rs6000-builtin.def (.../gcc/config/rs6000)
(working copy)
@@ -877,7 +877,16 @@
"__builtin_vsx_" NAME, /* NAME */ \
RS6000_BTM_P9_VECTOR, /* MASK */ \
(RS6000_BTC_ ## ATTR /* ATTR */ \
- | RS6000_BTC_BINARY), \
+ | RS6000_BTC_TERNARY), \
+ CODE_FOR_ ## ICODE) /* ICODE */
+
+#define BU_P9V_64BIT_VSX_3(ENUM, NAME, ATTR, ICODE) \
+ RS6000_BUILTIN_2 (P9V_BUILTIN_ ## ENUM, /* ENUM */ \
+ "__builtin_vsx_" NAME, /* NAME */ \
+ (RS6000_BTM_64BIT \
+ | RS6000_BTM_P9_VECTOR), /* MASK */ \
+ (RS6000_BTC_ ## ATTR /* ATTR */ \
+ | RS6000_BTC_TERNARY), \
CODE_FOR_ ## ICODE) /* ICODE */
/* See the comment on BU_ALTIVEC_P. */
@@ -1967,6 +1976,11 @@ BU_P9V_AV_2 (VEXTUHRX, "vextuhrx", CONS
BU_P9V_AV_2 (VEXTUWLX, "vextuwlx", CONST, vextuwlx)
BU_P9V_AV_2 (VEXTUWRX, "vextuwrx", CONST, vextuwrx)
+/* Insert/extract 4 byte word into a vector. */
+BU_P9V_VSX_2 (VEXTRACT4B, "vextract4b", CONST, vextract4b)
+BU_P9V_VSX_3 (VINSERT4B, "vinsert4b", CONST, vinsert4b)
+BU_P9V_VSX_3 (VINSERT4B_DI, "vinsert4b_di", CONST, vinsert4b_di)
+
/* 3 argument vector functions returning void, treated as SPECIAL,
added in ISA 3.0 (power9). */
BU_P9V_64BIT_AV_X (STXVL, "stxvl", MISC)
@@ -2008,12 +2022,13 @@ BU_P9V_AV_P (VCMPNEZW_P, "vcmpnezw_p", C
/* ISA 3.0 Vector scalar overloaded 2 argument functions */
BU_P9V_OVERLOAD_2 (LXVL, "lxvl")
+BU_P9V_OVERLOAD_2 (VEXTULX, "vextulx")
+BU_P9V_OVERLOAD_2 (VEXTURX, "vexturx")
+BU_P9V_OVERLOAD_2 (VEXTRACT4B, "vextract4b")
/* ISA 3.0 Vector scalar overloaded 3 argument functions */
BU_P9V_OVERLOAD_3 (STXVL, "stxvl")
-
-BU_P9V_OVERLOAD_2 (VEXTULX, "vextulx")
-BU_P9V_OVERLOAD_2 (VEXTURX, "vexturx")
+BU_P9V_OVERLOAD_3 (VINSERT4B, "vinsert4b")
/* Overloaded CMPNE support was implemented prior to Power 9,
so is not mentioned here. */
Index: gcc/config/rs6000/rs6000-c.c
===================================================================
--- gcc/config/rs6000/rs6000-c.c
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/config/rs6000)
(revision 243590)
+++ gcc/config/rs6000/rs6000-c.c (.../gcc/config/rs6000) (working copy)
@@ -4682,6 +4682,11 @@ const struct altivec_builtin_types altiv
{ P9V_BUILTIN_VEC_VCTZLSBB, P9V_BUILTIN_VCTZLSBB,
RS6000_BTI_INTSI, RS6000_BTI_unsigned_V16QI, 0, 0 },
+ { P9V_BUILTIN_VEC_VEXTRACT4B, P9V_BUILTIN_VEXTRACT4B,
+ RS6000_BTI_INTDI, RS6000_BTI_V16QI, RS6000_BTI_UINTSI, 0 },
+ { P9V_BUILTIN_VEC_VEXTRACT4B, P9V_BUILTIN_VEXTRACT4B,
+ RS6000_BTI_INTDI, RS6000_BTI_unsigned_V16QI, RS6000_BTI_UINTSI, 0 },
+
{ P9V_BUILTIN_VEC_VEXTULX, P9V_BUILTIN_VEXTUBLX,
RS6000_BTI_INTQI, RS6000_BTI_UINTSI,
RS6000_BTI_V16QI, 0 },
@@ -4735,6 +4740,28 @@ const struct altivec_builtin_types altiv
{ P8V_BUILTIN_VEC_VGBBD, P8V_BUILTIN_VGBBD,
RS6000_BTI_unsigned_V16QI, RS6000_BTI_unsigned_V16QI, 0, 0 },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B,
+ RS6000_BTI_V16QI, RS6000_BTI_V4SI,
+ RS6000_BTI_V16QI, RS6000_BTI_UINTSI },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B,
+ RS6000_BTI_V16QI, RS6000_BTI_unsigned_V4SI,
+ RS6000_BTI_V16QI, RS6000_BTI_UINTSI },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B,
+ RS6000_BTI_unsigned_V16QI, RS6000_BTI_unsigned_V4SI,
+ RS6000_BTI_unsigned_V16QI, RS6000_BTI_UINTSI },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
+ RS6000_BTI_V16QI, RS6000_BTI_INTDI,
+ RS6000_BTI_V16QI, RS6000_BTI_UINTDI },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
+ RS6000_BTI_V16QI, RS6000_BTI_UINTDI,
+ RS6000_BTI_V16QI, RS6000_BTI_UINTDI },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
+ RS6000_BTI_unsigned_V16QI, RS6000_BTI_INTDI,
+ RS6000_BTI_unsigned_V16QI, RS6000_BTI_UINTDI },
+ { P9V_BUILTIN_VEC_VINSERT4B, P9V_BUILTIN_VINSERT4B_DI,
+ RS6000_BTI_unsigned_V16QI, RS6000_BTI_UINTDI,
+ RS6000_BTI_unsigned_V16QI, RS6000_BTI_UINTDI },
+
{ P8V_BUILTIN_VEC_VADDECUQ, P8V_BUILTIN_VADDECUQ,
RS6000_BTI_V1TI, RS6000_BTI_V1TI, RS6000_BTI_V1TI, RS6000_BTI_V1TI },
{ P8V_BUILTIN_VEC_VADDECUQ, P8V_BUILTIN_VADDECUQ,
Index: gcc/config/rs6000/rs6000.c
===================================================================
--- gcc/config/rs6000/rs6000.c
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/config/rs6000)
(revision 243590)
+++ gcc/config/rs6000/rs6000.c (.../gcc/config/rs6000) (working copy)
@@ -15546,7 +15546,7 @@ altivec_expand_builtin (tree exp, rtx ta
size_t i;
enum insn_code icode;
tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0);
- tree arg0;
+ tree arg0, arg1, arg2;
rtx op0, pat;
machine_mode tmode, mode0;
enum rs6000_builtins fcode
@@ -15766,6 +15766,40 @@ altivec_expand_builtin (tree exp, rtx ta
case VSX_BUILTIN_VEC_EXT_V1TI:
return altivec_expand_vec_ext_builtin (exp, target);
+ case P9V_BUILTIN_VEXTRACT4B:
+ case P9V_BUILTIN_VEC_VEXTRACT4B:
+ arg1 = CALL_EXPR_ARG (exp, 1);
+ STRIP_NOPS (arg1);
+
+ /* Generate a normal call if it is invalid. */
+ /* If we got invalid arguments bail out before generating bad rtl. */
+ if (arg1 == error_mark_node)
+ return expand_call (exp, target, false);
+
+ if (TREE_CODE (arg1) != INTEGER_CST || TREE_INT_CST_LOW (arg1) > 11)
+ {
+ error ("second argument to vec_vextract4b must 0..11");
+ return expand_call (exp, target, false);
+ }
+ break;
+
+ case P9V_BUILTIN_VINSERT4B:
+ case P9V_BUILTIN_VINSERT4B_DI:
+ case P9V_BUILTIN_VEC_VINSERT4B:
+ arg2 = CALL_EXPR_ARG (exp, 2);
+ STRIP_NOPS (arg2);
+
+ /* If we got invalid arguments bail out before generating bad rtl. */
+ if (arg2 == error_mark_node)
+ return expand_call (exp, target, false);
+
+ if (TREE_CODE (arg2) != INTEGER_CST || TREE_INT_CST_LOW (arg2) > 11)
+ {
+ error ("third argument to vec_vinsert4b must 0..11");
+ return expand_call (exp, target, false);
+ }
+ break;
+
default:
break;
/* Fall through. */
Index: gcc/config/rs6000/vsx.md
===================================================================
--- gcc/config/rs6000/vsx.md
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/config/rs6000)
(revision 243590)
+++ gcc/config/rs6000/vsx.md (.../gcc/config/rs6000) (working copy)
@@ -366,6 +366,8 @@ (define_c_enum "unspec"
UNSPEC_VCMPNEZH
UNSPEC_VCMPNEW
UNSPEC_VCMPNEZW
+ UNSPEC_XXEXTRACTUW
+ UNSPEC_XXINSERTW
])
;; VSX moves
@@ -3686,3 +3688,94 @@ (define_insn "vextuwrx"
"TARGET_P9_VECTOR"
"vextuwrx %0,%1,%2"
[(set_attr "type" "vecsimple")])
+
+;; Vector insert/extract word at arbitrary byte values. Note, the little
+;; endian version needs to adjust the byte number, and the V4SI element in
+;; vinsert4b.
+(define_expand "vextract4b"
+ [(set (match_operand:DI 0 "gpc_reg_operand")
+ (unspec:DI [(match_operand:V16QI 1 "vsx_register_operand")
+ (match_operand:QI 2 "const_0_to_11_operand")]
+ UNSPEC_XXEXTRACTUW))]
+ "TARGET_P9_VECTOR"
+{
+ if (!VECTOR_ELT_ORDER_BIG)
+ operands[2] = GEN_INT (12 - INTVAL (operands[2]));
+})
+
+(define_insn_and_split "*vextract4b_internal"
+ [(set (match_operand:DI 0 "gpc_reg_operand" "=wj,r")
+ (unspec:DI [(match_operand:V16QI 1 "vsx_register_operand" "wa,v")
+ (match_operand:QI 2 "const_0_to_11_operand" "n,n")]
+ UNSPEC_XXEXTRACTUW))]
+ "TARGET_P9_VECTOR"
+ "@
+ xxextractuw %x0,%x1,%2
+ #"
+ "&& reload_completed && int_reg_operand (operands[0], DImode)"
+ [(const_int 0)]
+{
+ rtx op0 = operands[0];
+ rtx op1 = operands[1];
+ rtx op2 = operands[2];
+ rtx op0_si = gen_rtx_REG (SImode, REGNO (op0));
+ rtx op1_v4si = gen_rtx_REG (V4SImode, REGNO (op1));
+
+ emit_move_insn (op0, op2);
+ if (VECTOR_ELT_ORDER_BIG)
+ emit_insn (gen_vextuwlx (op0_si, op0_si, op1_v4si));
+ else
+ emit_insn (gen_vextuwrx (op0_si, op0_si, op1_v4si));
+ DONE;
+}
+ [(set_attr "type" "vecperm")])
+
+(define_expand "vinsert4b"
+ [(set (match_operand:V16QI 0 "vsx_register_operand")
+ (unspec:V16QI [(match_operand:V4SI 1 "vsx_register_operand")
+ (match_operand:V16QI 2 "vsx_register_operand")
+ (match_operand:QI 3 "const_0_to_11_operand")]
+ UNSPEC_XXINSERTW))]
+ "TARGET_P9_VECTOR"
+{
+ if (!VECTOR_ELT_ORDER_BIG)
+ {
+ rtx op1 = operands[1];
+ rtx v4si_tmp = gen_reg_rtx (V4SImode);
+ emit_insn (gen_vsx_xxpermdi_v4si (v4si_tmp, op1, op1, const1_rtx));
+ operands[1] = v4si_tmp;
+ operands[3] = GEN_INT (12 - INTVAL (operands[3]));
+ }
+})
+
+(define_insn "*vinsert4b_internal"
+ [(set (match_operand:V16QI 0 "vsx_register_operand" "=wa")
+ (unspec:V16QI [(match_operand:V4SI 1 "vsx_register_operand" "wa")
+ (match_operand:V16QI 2 "vsx_register_operand" "0")
+ (match_operand:QI 3 "const_0_to_11_operand" "n")]
+ UNSPEC_XXINSERTW))]
+ "TARGET_P9_VECTOR"
+ "xxinsertw %x0,%x1,%3"
+ [(set_attr "type" "vecperm")])
+
+(define_expand "vinsert4b_di"
+ [(set (match_operand:V16QI 0 "vsx_register_operand")
+ (unspec:V16QI [(match_operand:DI 1 "vsx_register_operand")
+ (match_operand:V16QI 2 "vsx_register_operand")
+ (match_operand:QI 3 "const_0_to_11_operand")]
+ UNSPEC_XXINSERTW))]
+ "TARGET_P9_VECTOR"
+{
+ if (!VECTOR_ELT_ORDER_BIG)
+ operands[3] = GEN_INT (12 - INTVAL (operands[3]));
+})
+
+(define_insn "*vinsert4b_di_internal"
+ [(set (match_operand:V16QI 0 "vsx_register_operand" "=wa")
+ (unspec:V16QI [(match_operand:DI 1 "vsx_register_operand" "wj")
+ (match_operand:V16QI 2 "vsx_register_operand" "0")
+ (match_operand:QI 3 "const_0_to_11_operand" "n")]
+ UNSPEC_XXINSERTW))]
+ "TARGET_P9_VECTOR"
+ "xxinsertw %x0,%x1,%3"
+ [(set_attr "type" "vecperm")])
Index: gcc/config/rs6000/altivec.h
===================================================================
--- gcc/config/rs6000/altivec.h
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/config/rs6000)
(revision 243590)
+++ gcc/config/rs6000/altivec.h (.../gcc/config/rs6000) (working copy)
@@ -394,6 +394,8 @@
#define vec_vctzd __builtin_vec_vctzd
#define vec_vctzh __builtin_vec_vctzh
#define vec_vctzw __builtin_vec_vctzw
+#define vec_vextract4b __builtin_vec_vextract4b
+#define vec_vinsert4b __builtin_vec_vinsert4b
#define vec_vprtyb __builtin_vec_vprtyb
#define vec_vprtybd __builtin_vec_vprtybd
#define vec_vprtybw __builtin_vec_vprtybw
Index: gcc/doc/extend.texi
===================================================================
--- gcc/doc/extend.texi
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/doc) (revision
243590)
+++ gcc/doc/extend.texi (.../gcc/doc) (working copy)
@@ -17988,6 +17988,15 @@ vector unsigned short vec_vctzh (vector
vector int vec_vctzw (vector int);
vector unsigned int vec_vctzw (vector int);
+long long vec_vextract4b (const vector signed char, const int);
+long long vec_vextract4b (const vector unsigned char, const int);
+
+vector signed char vec_insert4b (vector int, vector signed char, const int);
+vector unsigned char vec_insert4b (vector unsigned int, vector unsigned char,
+ const int);
+vector signed char vec_insert4b (long long, vector signed char, const int);
+vector unsigned char vec_insert4b (long long, vector unsigned char, const int);
+
vector int vec_vprtyb (vector int);
vector unsigned int vec_vprtyb (vector unsigned int);
vector long long vec_vprtyb (vector long long);
Index: gcc/testsuite/gcc.target/powerpc/p9-vinsert4b-1.c
===================================================================
--- gcc/testsuite/gcc.target/powerpc/p9-vinsert4b-1.c
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/testsuite/gcc.target/powerpc)
(revision 0)
+++ gcc/testsuite/gcc.target/powerpc/p9-vinsert4b-1.c
(.../gcc/testsuite/gcc.target/powerpc) (revision 243618)
@@ -0,0 +1,39 @@
+/* { dg-do compile { target { powerpc64*-*-* && lp64 } } } */
+/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } {
"-mcpu=power9" } } */
+/* { dg-require-effective-target powerpc_p9vector_ok } */
+/* { dg-options "-mcpu=power9 -O2" } */
+
+#include <altivec.h>
+
+vector signed char
+vins_v4si (vector int *vi, vector signed char *vc)
+{
+ return vec_vinsert4b (*vi, *vc, 1);
+}
+
+vector unsigned char
+vins_di (long di, vector unsigned char *vc)
+{
+ return vec_vinsert4b (di, *vc, 2);
+}
+
+vector char
+vins_di2 (long *p_di, vector char *vc)
+{
+ return vec_vinsert4b (*p_di, *vc, 3);
+}
+
+vector unsigned char
+vins_di0 (vector unsigned char *vc)
+{
+ return vec_vinsert4b (0, *vc, 4);
+}
+
+long
+vext (vector signed char *vc)
+{
+ return vec_vextract4b (*vc, 5);
+}
+
+/* { dg-final { scan-assembler "xxextractuw\|vextuw\[lr\]x" } } */
+/* { dg-final { scan-assembler "xxinsertw" } } */
Index: gcc/testsuite/gcc.target/powerpc/p9-vinsert4b-2.c
===================================================================
--- gcc/testsuite/gcc.target/powerpc/p9-vinsert4b-2.c
(.../svn+ssh://meiss...@gcc.gnu.org/svn/gcc/trunk/gcc/testsuite/gcc.target/powerpc)
(revision 0)
+++ gcc/testsuite/gcc.target/powerpc/p9-vinsert4b-2.c
(.../gcc/testsuite/gcc.target/powerpc) (revision 243618)
@@ -0,0 +1,30 @@
+/* { dg-do compile { target { powerpc64*-*-* && lp64 } } } */
+/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } {
"-mcpu=power9" } } */
+/* { dg-require-effective-target powerpc_p9vector_ok } */
+/* { dg-options "-mcpu=power9 -O2" } */
+
+#include <altivec.h>
+
+vector signed char
+ins_v4si (vector int vi, vector signed char vc)
+{
+ return vec_vinsert4b (vi, vc, 12); /* { dg-error "vec_vinsert4b" } */
+}
+
+vector unsigned char
+ins_di (long di, vector unsigned char vc, long n)
+{
+ return vec_vinsert4b (di, vc, n); /* { dg-error "vec_vinsert4b" } */
+}
+
+long
+vext1 (vector signed char vc)
+{
+ return vec_vextract4b (vc, 12); /* { dg-error "vec_vextract4b" } */
+}
+
+long
+vextn (vector unsigned char vc, long n)
+{
+ return vec_vextract4b (vc, n); /* { dg-error "vec_vextract4b" } */
+}
