tweak wording

diff --git a/personal/_posts/2022-04-11-provenance-exposed.md b/personal/_posts/2022-04-11-provenance-exposed.md
index 24b340236a37cf1e29d0c1e3d8dfc92075fbb6e2..901b706598a6298a7542da7f297e019e3d4ab45c 100644 (file)
--- a/personal/_posts/2022-04-11-provenance-exposed.md
+++ b/personal/_posts/2022-04-11-provenance-exposed.md
@@ -425,9 +425,9 @@ We already have no choice but treat pointer-integer casts as an operation with s
 
 I discussed above how my vision for Rust relates to the direction C is moving towards.
 What does that mean for the design space of LLVM?
 
 I discussed above how my vision for Rust relates to the direction C is moving towards.
 What does that mean for the design space of LLVM?

-Which changes need to be made to fix (potential) miscompilations in LLVM and to make it compatible with these ideas for C and/or Rust?
+Which changes would have to be made to fix (potential) miscompilations in LLVM and to make it compatible with these ideas for C and/or Rust?

 Here's the list of open problems I am aware of:
 Here's the list of open problems I am aware of:

-- LLVM needs to stop [removing `inttoptr(ptrtoint(_))`](https://github.com/llvm/llvm-project/issues/33896) and stop doing [replacement of `==`-equal pointers](https://github.com/llvm/llvm-project/issues/34577).
+- LLVM would have to to stop [removing `inttoptr(ptrtoint(_))`](https://github.com/llvm/llvm-project/issues/33896) and stop doing [replacement of `==`-equal pointers](https://github.com/llvm/llvm-project/issues/34577).

 - As the first example shows, LLVM also needs to treat `ptrtoint` as a side-effecting operation that has to be kept around even when its result is unused. (Of course, as with everything I say here, there can be special cases where the old optimizations are still correct, but they need extra justification.)
 - I think LLVM should also treat `inttoptr` as a side-effecting (and, in particular, non-deterministic) operation, as per the last example. However, this could possibly be avoided with a `noalias` model that specifically accounts for new kinds of provenance being synthesized by casts. (I am being vague here since I don't know what that provenance needs to look like.)
 
 - As the first example shows, LLVM also needs to treat `ptrtoint` as a side-effecting operation that has to be kept around even when its result is unused. (Of course, as with everything I say here, there can be special cases where the old optimizations are still correct, but they need extra justification.)
 - I think LLVM should also treat `inttoptr` as a side-effecting (and, in particular, non-deterministic) operation, as per the last example. However, this could possibly be avoided with a `noalias` model that specifically accounts for new kinds of provenance being synthesized by casts. (I am being vague here since I don't know what that provenance needs to look like.)