defer panic() doesn't work

[dgryski]

~/go/src/github.com/dgryski/bug/defpan $ tinygo run main.go
todo: builtin: panic
todo: builtin: panic
~/go/src/github.com/dgryski/bug/defpan $ cat main.go
package main

func main() {
	println("before")
	defer panic("panic")
	println("after")
}

panic is *ssa.Panic which isn't handled by defer (or createBuiltin?). I guess we need to turn it into a b.createRuntimeInvoke("_panic", ...).

[joonas]

just wanted to chime in here that I'm also interested in this, but not quite sure how I could best help move things along 🙂

[aykevl]

Here is a fix: #4571