llvm-project

f9f52bbc - [mlir][memref] Add invariant attribute to memref.load (#206197)

[mlir][memref] Add invariant attribute to memref.load (#206197) Add an optional `invariant` attribute to `memref.load`, modeled on the existing `nontemporal` attribute. When set, it indicates the referenced memory location holds the same value at all points in the program where it is dereferenceable, so the load may be treated as invariant. The MemRefToLLVM LoadOpLowering forwards the attribute to the invariant flag of `llvm.load` (which lowers to `!invariant.load`).