[PATCH] D86673: [StackColoring] Conservatively merge Variable in catch(Variable)

[Xiang Zhang via Phabricator via llvm-commits]

xiangzhangllvm added a comment.

Unlike linux, usually by @__cxa_begin_catch ,windows Exception didn't has a suitable port to reflect how it change the catch value, it is more like a "ABI" action, where the throw impliedly write and where the catch block get it.
I think the early designer do this mainly because the catch value (e.g. type** exp.i), is only used in adjacent catch block.


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  https://reviews.llvm.org/D86673/new/

https://reviews.llvm.org/D86673