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We extend the search for redundant stores to predecessor blocks that unconditionally lead to the block BB with the current store instruction. That also includes single-block loops that unconditionally lead to BB, and if-then-else blocks where then- and else-blocks unconditionally lead to BB. http://reviews.llvm.org/D13363 Patch by Ivan Baev <ibaev@codeaurora.org>! llvm-svn: 255247
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