slyubomirsky commented on code in PR #101:
URL: https://github.com/apache/tvm-rfcs/pull/101#discussion_r1439907511
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rfcs/assets/0101/spec.md:
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@@ -522,7 +528,7 @@ Unlike `PrimExprs`, statements do not return values.
Instead, they operate by mo
* If `t->strides` is not null, then `len(t->strides)` must match
`len(b->strides)` or else an error is raised. For all `i` from 0 to
`len(b->strides) - 1`, `b->strides[i]` must be an `IntImm` whose value matches
`t->strides[i]` (or else an error is raised), an already bound `Var` whose
bound value is `t->strides[i]` (or else an error is raised), or an unbound
`Var` (in which case, it is bound with the value `t->strides[i]`).
* `len(t->shape)` and `len(b->shape)` must match or else an error
is raised. For all `i` from 0 to `len(b->shape) - 1`, `b->shape[i]` must be an
`IntImm` whose value matches `t->shape[i]` (or else an error is raised), an
already bound `Var` whose bound value is `t->shape[i]` (or else an error is
raised), or an unbound `Var` (in which case, it is bound with the value
`t->shape[i]`).
5. One further condition that `PrimFunc`s expect of their `DLTensor`
arguments: No two `DLTensor` arguments are permitted to alias each other.
- 6. Next, `body` is executed. The `PrimFunc` produces outputs by
mutating values in buffers passed as the inputs; these changes can be observed
by the caller via the `DLTensor` representations passed in step i.
+ 6. Next, `body` is executed. The `PrimFunc` produces outputs by
mutating values in buffers passed as the inputs; these changes can be observed
by the caller via the `DLTensor` representations passed in step i. If a
`tir.ret` builtin was executed, the `PrimFunc` returns the value that was
passed to `tir.ret`; otherwise, the `PrimFunc` returns a void value. Upon
returning (whether after encountering a call to `tir.ret` or the end of
`body`), the current scope is popped and all values allocated within the
`PrimFunc` are freed.
Review Comment:
Since you don't think it's the intended behavior, I think we should call
that a bug then. Happy to hear others' thoughts.
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