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6759d03795
When converting a BUILD_VECTOR or VECTOR_SHUFFLE to a splatting load as of 1461fb6e783cb946b061f66689b419f74f7fad63, we inaccurately check for a single user of the load and neglect to update the users of the output chain of the original load. As a result, we can emit a new load when the original load is kept and the new load can be reordered after a dependent store. This patch fixes those two issues. Fixes https://bugs.llvm.org/show_bug.cgi?id=47891
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