forked from OSchip/llvm-project
b5dd092051
We have a class `ImplicitControlFlowTracking` which allows us to keep track of instructions that can abnormally exit and answer queries like "whether or not there is side-exiting instruction above this instruction in its block". We may want to have the similar tracking for other types of "special" instructions, for example instructions that write memory. This patch separates ImplicitControlFlowTracking into two classes, isolating all general logic not related to implicit control flow into its parent class. We can later make another child of this class to keep track of instructions that write memory. The motivation for that is that we want to make these checks efficiently in the patch https://reviews.llvm.org/D50891. NOTE: The naming of the parent class is not super cool, but the other options we have are hardly better. Please feel free to rename it as NFC if you think you've found a more informative name for it. Differential Revision: https://reviews.llvm.org/D50954 Reviewed By: fedor.sergeev llvm-svn: 340728 |
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