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This patch is a follow up from r240560 and is a step further into mitigating the compile time performance issues in CaptureTracker. By providing the CaptureTracker with a "cached ordered basic block" instead of computing it every time, MemDepAnalysis can use this cache throughout its calls to AA->callCapturesBefore, avoiding to recompute it for every scanned instruction. In the same testcase used in r240560, compile time is reduced from 2min to 30s. This also fixes PR22348. rdar://problem/19230319 Differential Revision: http://reviews.llvm.org/D11364 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243750 91177308-0d34-0410-b5e6-96231b3b80d8
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