llvm-project

41274582 - [mlir][tosa] Fix check for isolated regions in `tosa.cond_if` (#143772)

[mlir][tosa] Fix check for isolated regions in `tosa.cond_if` (#143772) This commit fixes a check in the validation pass which intended to validate whether a `tosa.cond_if` operation was conformant to the specification. The specification requires all values used in the then/else regions are explicitly declared within the regions. This change checks that these regions are 'isolated from above', to ensure this requirement is true.