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Commit 732b0555 authored by Shimin Cui's avatar Shimin Cui
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[GlobalOpt] support ConstantExpr use of global address for OptimizeGlobalAddressOfMalloc 

I'm working on extending the OptimizeGlobalAddressOfMalloc to handle some more general cases. This is to add support of the ConstantExpr use of the global variables. The function allUsesOfLoadedValueWillTrapIfNull is now iterative with the added CE use of GV. Also, the recursive function valueIsOnlyUsedLocallyOrStoredToOneGlobal is changed to iterative using a worklist with the GEP case added.

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D106589
parent 6ef6616e
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