[Bug target/89057] [8/9/10/11 Regression] AArch64 ld3 st4 less optimized

[abhiraj.garakapati at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89057

--- Comment #8 from Abhiraj Garakapati <abhiraj.garakapati at gmail dot com> ---
Also, cross-checked it with the latest GCC version GCC-8.4.0 with above
mentioned reverting changes of "aarch64-simd.md" file and got the expected
output same as GCC-7.3.0.