Hi all,

This patch lowers the vld1 and vst1 variants of the
store and load neon builtins functions to gimple.

The changes in this patch covers:
* Replaces calls to the vld1 and vst1 variants of the builtins
* Uses MEM_REF gimple assignments to generate better code
* Updates test cases to prevent over optimization

Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.

Ok for master? If OK can it be committed for me, I have no commit rights.

Thanks,
Jirui

gcc/ChangeLog:

        * config/aarch64/aarch64-builtins.c (aarch64_general_gimple_fold_builtin):
lower vld1 and vst1 variants of the neon builtins

gcc/testsuite/ChangeLog:

        * gcc.target/aarch64/fmla_intrinsic_1.c:
prevent over optimization
        * gcc.target/aarch64/fmls_intrinsic_1.c:
prevent over optimization
        * gcc.target/aarch64/fmul_intrinsic_1.c:
prevent over optimization
        * gcc.target/aarch64/mla_intrinsic_1.c:
prevent over optimization
        * gcc.target/aarch64/mls_intrinsic_1.c:
prevent over optimization
        * gcc.target/aarch64/mul_intrinsic_1.c:
prevent over optimization
        * gcc.target/aarch64/simd/vmul_elem_1.c:
prevent over optimization
        * gcc.target/aarch64/vclz.c:
replace macro with function to prevent over optimization
        * gcc.target/aarch64/vneg_s.c:
replace macro with function to prevent over optimization