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+On ARMv8.4 LSE2 supporting devices remove padding on atomic loadstore
+ARMv8.4 LSE2 allows atomics to be unaligned which means we no longer need to proactively backpatch these.

+We still need to handle the cross-cacheline case.

+

+Three steps to this.

+* Add two new atomic handlers in the signal handler for atomic loads and stores that cross cacheline

+* Remove the padding on the TSO loadstores when LSE2 is supported

+* Add unit tests for missing atomic loadstore ops that cross cacheline (We already have it for memory atomic ops)
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