Nikita Popov 2b2827552a [CaptureTracking] Make MaxUsesToExplore cheaper (NFC) ...

The change in D78624 had a noticeable negative compile-time impact.
It seems that going through a function call for the MaxUsesToExplore
default is fairly expensive, at least if LLVM is not built with LTO.

This patch makes MaxUsesToExpore default to 0 and assigns the actual
default in the implementation instead. This recovers most of the
regression.

Differential Revision: https://reviews.llvm.org/D78734

2020-04-26 09:54:15 +02:00

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