Are compilers smart enough to interleave load/stores? I've noticed when using NEON intrinsics that GCC occasionally did clever things (and of course sometimes I

Are compilers smart enough to interleave load/stores? I've noticed when using NEON intrinsics that GCC occasionally did clever things (and of course sometimes I got huge speed improvements by making small changes, like adding a PLD a few instructions before a hunk of memory is used)