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[UnJ] Use SmallPtrSets for block collections. NFC
authorDavid Green <david.green@arm.com>
Thu, 12 Jul 2018 10:44:47 +0000 (10:44 +0000)
committerDavid Green <david.green@arm.com>
Thu, 12 Jul 2018 10:44:47 +0000 (10:44 +0000)
commitecc246961c8f070e5286d2ae4c7d22353b8726b2
tree4f28275f37472b07f0004b69c43e8ec0f5006398
parent8bda54e50870252d7436036fcc86d7b32e1e4d40
[UnJ] Use SmallPtrSets for block collections. NFC

We no longer care about the order of blocks in these collections,
so can change to SmallPtrSets, making contains checks quicker.

Differential revision: https://reviews.llvm.org/D49060

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336897 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Utils/LoopUnrollAndJam.cpp