The delayTransform only checks whether ir.CurFunc is generic function or
not. but when compiling a non-generic closure inside a generic function,
we also want to delay the transformation, which delayTransform fails to
detect, since when ir.CurFunc is the closure, not the top level function.
Instead, we must rely on irgen.topFuncIsGeneric field to decide whether
to delay the transformation, the same logic with what is being done for
not adding closure inside a generic function to g.target.Decls list.
Fixes#48609
Change-Id: I5bf5592027d112fe8b19c92eb906add424c46507
Reviewed-on: https://go-review.googlesource.com/c/go/+/351855
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
