[PATCH] D139565: [IR] add new callbrpad instruction

[Nick Desaulniers via Phabricator via llvm-commits]

nickdesaulniers added a comment.

In D139565#3979289 <https://reviews.llvm.org/D139565#3979289>, @efriedma wrote:

> If we do decide to go with an IR instruction, making the callbrpad optional seems likely to cause confusion in IR passes, in terms of what transformations are actually legal.

So I think this is why @void suggested I create a new instruction, rather than use an intrinsic (I have another impl of this patch using an intrinsic); by marking that instruction `isEHPad` most transforms know already not to touch.


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https://reviews.llvm.org/D139565