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Fix LSR best register search algorithm.
authorEvgeny Stupachenko <evstupac@gmail.com>
Wed, 30 Nov 2016 22:23:51 +0000 (22:23 +0000)
committerEvgeny Stupachenko <evstupac@gmail.com>
Wed, 30 Nov 2016 22:23:51 +0000 (22:23 +0000)
commite18cb89a650d9e151b0090c9abd17a87b0bce9c3
tree8727b9be7b8fab2ccbf4cfd379456df9a5077bfe
parent76914be1f4b7b1ff2e67b45a2336b5572cbbc0fc
Fix LSR best register search algorithm.

Summary:
Fix a case when first register in a search has maximum
RegUses.getUsedByIndices(Reg).count()

Reviewers: qcolombet

Differential Revision: http://reviews.llvm.org/D26877

From: Evgeny Stupachenko <evstupac@gmail.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288278 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Transforms/Scalar/LoopStrengthReduce.cpp