[AArch64][testsuite] Adjust vect_copy_lane_1.c for new code-gen

[Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>]

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Hi,
After 27de9aa152141e7f3ee66372647d0f2cd94c4b90, there's a following regression:
FAIL: gcc.target/aarch64/vect_copy_lane_1.c scan-assembler-times
ins\\tv0.s\\[1\\], v1.s\\[0\\] 3

This happens because for the following function from vect_copy_lane_1.c:
float32x2_t
__attribute__((noinline, noclone)) test_copy_lane_f32 (float32x2_t a,
float32x2_t b)
{
  return vcopy_lane_f32 (a, 1, b, 0);
}

Before 27de9aa152141e7f3ee66372647d0f2cd94c4b90,
it got lowered to following sequence in .optimized dump:
  <bb 2> [local count: 1073741824]:
  _4 = BIT_FIELD_REF <b_3(D), 32, 0>;
  __a_5 = BIT_INSERT_EXPR <a_2(D), _4, 32>;
  return __a_5;

The above commit simplifies BIT_FIELD_REF + BIT_INSERT_EXPR
to vector permutation and now thus gets lowered to:

  <bb 2> [local count: 1073741824]:
  __a_4 = VEC_PERM_EXPR <a_2(D), b_3(D), { 0, 2 }>;
  return __a_4;

Since we give higher priority to aarch64_evpc_zip over aarch64_evpc_ins
in aarch64_expand_vec_perm_const_1, it now generates:

test_copy_lane_f32:
        zip1    v0.2s, v0.2s, v1.2s
        ret

Similarly for test_copy_lane_[us]32.
The attached patch adjusts the tests to reflect the change in code-gen
and the tests pass.
OK to commit ?

Thanks,
Prathamesh

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diff --git a/gcc/testsuite/gcc.target/aarch64/vect_copy_lane_1.c b/gcc/testsuite/gcc.target/aarch64/vect_copy_lane_1.c
index 2848be564d5..811dc678b92 100644
--- a/gcc/testsuite/gcc.target/aarch64/vect_copy_lane_1.c
+++ b/gcc/testsuite/gcc.target/aarch64/vect_copy_lane_1.c
@@ -22,7 +22,7 @@ BUILD_TEST (uint16x4_t, uint16x4_t, , , u16, 3, 2)
 BUILD_TEST (float32x2_t, float32x2_t, , , f32, 1, 0)
 BUILD_TEST (int32x2_t,   int32x2_t,   , , s32, 1, 0)
 BUILD_TEST (uint32x2_t,  uint32x2_t,  , , u32, 1, 0)
-/* { dg-final { scan-assembler-times "ins\\tv0.s\\\[1\\\], v1.s\\\[0\\\]" 3 } } */
+/* { dg-final { scan-assembler-times "zip1\\tv0.2s, v0.2s, v1.2s" 3 } } */
 BUILD_TEST (int64x1_t,   int64x1_t,   , , s64, 0, 0)
 BUILD_TEST (uint64x1_t,  uint64x1_t,  , , u64, 0, 0)
 BUILD_TEST (float64x1_t, float64x1_t, , , f64, 0, 0)