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AArch64: add acq/rel load ordering to all LDAR/STLR family instructions#9080

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AArch64: add acq/rel load ordering to all LDAR/STLR family instructions#9080
liamwhite wants to merge 1 commit intoNationalSecurityAgency:masterfrom
liamwhite:sleigh-aarch64-more-acqrel

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These instructions have additional side effects from the perspective of the memory model, so their ordering is important to note when you are studying functions in the decompiler. Note that similarly to #9076, the release barrier of stlxr only applies if the store was successful.

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