Takafumi Arakaki 18e6b8234a Allow pointer types for atomicrmw xchg ...

This adds support for pointer types for `atomic xchg` and let us write
instructions such as `atomicrmw xchg i64** %0, i64* %1 seq_cst`. This
is similar to the patch for allowing atomicrmw xchg on floating point
types: https://reviews.llvm.org/D52416.

Differential Revision: https://reviews.llvm.org/D124728

2022-05-25 16:20:26 +00:00

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