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15e381763b
There's a 64k limit on the number of SDNode operands, and some very large functions with 64k or more loads can cause crashes due to this limit being hit when a TokenFactor with this many operands is created. To fix this, create sub-tokenfactors if we've exceeded the limit. No test case as it requires a very large function. rdar://45196621 Differential Revision: https://reviews.llvm.org/D55073 llvm-svn: 348324
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