[PATCH AArch64] Add a builtin for rbit(q?)_p8; add intrinsics and tests.

gcc/:

	* config/aarch64/aarch64-simd.md (aarch64_rbit<mode>): New pattern.
	* config/aarch64/aarch64-simd-builtins.def (rbit): New builtin.
	* config/aarch64/arm_neon.h (vrbit_s8, vrbit_u8, vrbitq_s8, vrbitq_u8):
	Replace temporary asm with call to builtin.
	(vrbit_p8, vrbitq_p8): New functions.

gcc/testsuite/:

	* gcc.target/aarch64/simd/vrbit_1.c: New test.

From-SVN: r214943

gcc/ChangeLog

+2014-09-05  Alan Lawrence  <alan.lawrence@arm.com>
+
+	* config/aarch64/aarch64-simd.md (aarch64_rbit<mode>): New pattern.
+	* config/aarch64/aarch64-simd-builtins.def (rbit): New builtin.
+	* config/aarch64/arm_neon.h (vrbit_s8, vrbit_u8, vrbitq_s8, vrbitq_u8):
+	Replace temporary asm with call to builtin.
+	(vrbit_p8, vrbitq_p8): New functions.
+
 2014-09-05  Richard Biener  <rguenther@suse.de>
 
 	* cfgloop.c (mark_loop_for_removal): New function.

gcc/config/aarch64/aarch64-simd-builtins.def

@@ -344,6 +344,8 @@
 
   VAR5 (UNOPU, bswap, 10, v4hi, v8hi, v2si, v4si, v2di)
 
+  BUILTIN_VB (UNOP, rbit, 0)
+
   /* Implemented by
      aarch64_<PERMUTE:perm_insn><PERMUTE:perm_hilo><mode>.  */
   BUILTIN_VALL (BINOP, zip1, 0)

gcc/config/aarch64/aarch64-simd.md

@@ -294,6 +294,15 @@
   [(set_attr "type" "neon_rev<q>")]
 )
 
+(define_insn "aarch64_rbit<mode>"
+  [(set (match_operand:VB 0 "register_operand" "=w")
+	(unspec:VB [(match_operand:VB 1 "register_operand" "w")]
+		   UNSPEC_RBIT))]
+  "TARGET_SIMD"
+  "rbit\\t%0.<Vbtype>, %1.<Vbtype>"
+  [(set_attr "type" "neon_rbit")]
+)
+
 (define_insn "*aarch64_mul3_elt<mode>"
  [(set (match_operand:VMUL 0 "register_operand" "=w")
     (mult:VMUL

gcc/config/aarch64/arm_neon.h

@@ -10407,50 +10407,6 @@ vqrdmulhq_n_s32 (int32x4_t a, int32_t b)
        result;                                                          \
      })
 
-__extension__ static __inline int8x8_t __attribute__ ((__always_inline__))
-vrbit_s8 (int8x8_t a)
-{
-  int8x8_t result;
-  __asm__ ("rbit %0.8b,%1.8b"
-           : "=w"(result)
-           : "w"(a)
-           : /* No clobbers */);
-  return result;
-}
-
-__extension__ static __inline uint8x8_t __attribute__ ((__always_inline__))
-vrbit_u8 (uint8x8_t a)
-{
-  uint8x8_t result;
-  __asm__ ("rbit %0.8b,%1.8b"
-           : "=w"(result)
-           : "w"(a)
-           : /* No clobbers */);
-  return result;
-}
-
-__extension__ static __inline int8x16_t __attribute__ ((__always_inline__))
-vrbitq_s8 (int8x16_t a)
-{
-  int8x16_t result;
-  __asm__ ("rbit %0.16b,%1.16b"
-           : "=w"(result)
-           : "w"(a)
-           : /* No clobbers */);
-  return result;
-}
-
-__extension__ static __inline uint8x16_t __attribute__ ((__always_inline__))
-vrbitq_u8 (uint8x16_t a)
-{
-  uint8x16_t result;
-  __asm__ ("rbit %0.16b,%1.16b"
-           : "=w"(result)
-           : "w"(a)
-           : /* No clobbers */);
-  return result;
-}
-
 __extension__ static __inline uint32x2_t __attribute__ ((__always_inline__))
 vrecpe_u32 (uint32x2_t a)
 {
@@ -20781,6 +20737,44 @@ vqsubd_u64 (uint64_t __a, uint64_t __b)
   return __builtin_aarch64_uqsubdi_uuu (__a, __b);
 }
 
+/* vrbit  */
+
+__extension__ static __inline poly8x8_t __attribute__ ((__always_inline__))
+vrbit_p8 (poly8x8_t __a)
+{
+  return (poly8x8_t) __builtin_aarch64_rbitv8qi ((int8x8_t) __a);
+}
+
+__extension__ static __inline int8x8_t __attribute__ ((__always_inline__))
+vrbit_s8 (int8x8_t __a)
+{
+  return __builtin_aarch64_rbitv8qi (__a);
+}
+
+__extension__ static __inline uint8x8_t __attribute__ ((__always_inline__))
+vrbit_u8 (uint8x8_t __a)
+{
+  return (uint8x8_t) __builtin_aarch64_rbitv8qi ((int8x8_t) __a);
+}
+
+__extension__ static __inline poly8x16_t __attribute__ ((__always_inline__))
+vrbitq_p8 (poly8x16_t __a)
+{
+  return (poly8x16_t) __builtin_aarch64_rbitv16qi ((int8x16_t)__a);
+}
+
+__extension__ static __inline int8x16_t __attribute__ ((__always_inline__))
+vrbitq_s8 (int8x16_t __a)
+{
+  return __builtin_aarch64_rbitv16qi (__a);
+}
+
+__extension__ static __inline uint8x16_t __attribute__ ((__always_inline__))
+vrbitq_u8 (uint8x16_t __a)
+{
+  return (uint8x16_t) __builtin_aarch64_rbitv16qi ((int8x16_t) __a);
+}
+
 /* vrecpe  */
 
 __extension__ static __inline float32_t __attribute__ ((__always_inline__))

gcc/testsuite/ChangeLog

+2014-09-05  Alan Lawrence  <alan.lawrence@arm.com>
+
+	* gcc.target/aarch64/simd/vrbit_1.c: New test.
+
 2014-09-05  Richard Biener  <rguenther@suse.de>
 
 	PR middle-end/63148

gcc/testsuite/gcc.target/aarch64/simd/vrbit_1.c

+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+
+#include <arm_neon.h>
+
+extern void abort (void);
+
+uint64_t in1 = 0x0123456789abcdefULL;
+uint64_t expected1 = 0x80c4a2e691d5b3f7ULL;
+
+#define TEST8(BASETYPE, SUFFIX)						\
+void test8_##SUFFIX ()							\
+{									\
+  BASETYPE##8x8_t out = vrbit_##SUFFIX (vcreate_##SUFFIX (in1));	\
+  uint64_t res = vget_lane_u64 (vreinterpret_u64_##SUFFIX (out), 0);	\
+  if (res != expected1) abort ();					\
+}
+
+uint64_t in2 = 0xdeadbeefcafebabeULL;
+uint64_t expected2 = 0x7bb57df7537f5d7dULL;
+
+#define TEST16(BASETYPE, SUFFIX)					\
+void test16_##SUFFIX ()							\
+{									\
+  BASETYPE##8x16_t in = vcombine_##SUFFIX (vcreate_##SUFFIX (in1),	\
+					   vcreate_##SUFFIX (in2));	\
+  uint64x2_t res = vreinterpretq_u64_##SUFFIX (vrbitq_##SUFFIX (in));	\
+  uint64_t res1 = vgetq_lane_u64 (res, 0);				\
+  uint64_t res2 = vgetq_lane_u64 (res, 1);				\
+  if (res1 != expected1 || res2 != expected2) abort ();			\
+}
+
+TEST8 (poly, p8);
+TEST8 (int, s8);
+TEST8 (uint, u8);
+
+TEST16 (poly, p8);
+TEST16 (int, s8);
+TEST16 (uint, u8);
+
+int
+main (int argc, char **argv)
+{
+  test8_p8 ();
+  test8_s8 ();
+  test8_u8 ();
+  test16_p8 ();
+  test16_s8 ();
+  test16_u8 ();
+  return 0;
+}
+
+/* { dg-final { scan-assembler-times "rbit\[ \t\]+\[vV\]\[0-9\]+\.8\[bB\], ?\[vV\]\[0-9\]+\.8\[bB\]" 3 } } */
+/* { dg-final { scan-assembler-times "rbit\[ \t\]+\[vV\]\[0-9\]+\.16\[bB\], ?\[vV\]\[0-9\]+\.16\[bB\]" 3 } } */
+
+/* { dg-final { cleanup-saved-temps } } */