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This patch fixes calculating of builtin_object_size if it depends on a condition. Before this patch compiler did not know how to calculate the object size when it finds a condition that cannot be eliminated. This patch enables calculating of builtin_object_size even in case when condition cannot be eliminated by choosing minimum or maximum value as a result from condition. Choosing minimum or maximum value from condition is based on the second argument of __builtin_object_size function. Patch by Strahinja Petrovic. Differential Revision: http://reviews.llvm.org/D18438 llvm-svn: 266193
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