Amara Emerson 814a6794ba [SelectionDAG] Split very large token factors for loads into 64k chunks. ...

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

2018-12-05 00:41:30 +00:00

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