Andrew Trick d832d32f57 Fix a severe compile time problem when forming large SCEV expressions. ...

This fix is very lightweight. The same fix already existed for AddRec
but was missing for NAry expressions.

This is obviously an improvement and I'm unsure how to test compile
time problems.

Patch by Xiaoyi Guo!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187475 91177308-0d34-0410-b5e6-96231b3b80d8

2013-07-31 02:43:40 +00:00

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