Typed continuations: resume instructions (#6083)

This PR is part of a series that adds basic support for the [typed continuations proposal](https://github.com/wasmfx/specfx).

This particular PR adds support for the `resume` instruction. The most notable missing feature is validation, which is not implemented, yet.

1 files changed, 163 insertions, 0 deletions

diff --git a/test/lit/basic/typed_continuations_resume.wast b/test/lit/basic/typed_continuations_resume.wast
new file mode 100644
index 000000000..e96c9b4f5
--- /dev/null
+++ b/test/lit/basic/typed_continuations_resume.wast
@@ -0,0 +1,163 @@
+;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
+
+;; RUN: wasm-opt %s -all -o %t.text.wast -g -S
+;; RUN: wasm-as %s -all -g -o %t.wasm
+;; RUN: wasm-dis %t.wasm -all -o %t.bin.wast
+;; RUN: wasm-as %s -all -o %t.nodebug.wasm
+;; RUN: wasm-dis %t.nodebug.wasm -all -o %t.bin.nodebug.wast
+;; RUN: cat %t.text.wast | filecheck %s --check-prefix=CHECK-TEXT
+;; RUN: cat %t.bin.wast | filecheck %s --check-prefix=CHECK-BIN
+;; RUN: cat %t.bin.nodebug.wast | filecheck %s --check-prefix=CHECK-BIN-NODEBUG
+
+(module
+ ;; CHECK-BINARY:      (type $ft (func (param i32) (result i32)))
+ ;; CHECK-TEXT:      (type $ft (func (param i32) (result i32)))
+ ;; CHECK-BIN:      (type $ft (func (param i32) (result i32)))
+ (type $ft (func (param i32) (result i32)))
+ ;; CHECK-BINARY:      (type $ct (cont $ft))
+ ;; CHECK-TEXT:      (type $ct (cont $ft))
+ ;; CHECK-BIN:      (type $ct (cont $ft))
+ (type $ct (cont $ft))
+ ;; CHECK-BINARY:      (type $2 (func (result i32)))
+
+ ;; CHECK-BINARY:      (type $3 (func (param (ref $ct)) (result i32)))
+
+ ;; CHECK-BINARY:      (tag $t (result i32))
+ ;; CHECK-TEXT:      (type $2 (func (result i32 (ref $ct))))
+
+ ;; CHECK-TEXT:      (type $3 (func (param (ref $ct)) (result i32)))
+
+ ;; CHECK-TEXT:      (tag $t (param i32) (result i32))
+ ;; CHECK-BIN:      (type $2 (func (result i32 (ref $ct))))
+
+ ;; CHECK-BIN:      (type $3 (func (param (ref $ct)) (result i32)))
+
+ ;; CHECK-BIN:      (tag $t (param i32) (result i32))
+ (tag $t (param i32) (result i32))
+
+ ;; CHECK-BINARY:      (func $go (type $3) (param $x (ref $ct)) (result i32)
+ ;; CHECK-BINARY-NEXT:  (drop
+ ;; CHECK-BINARY-NEXT:   (block $label$1 (result (ref $ct))
+ ;; CHECK-BINARY-NEXT:    (return
+ ;; CHECK-BINARY-NEXT:     (resume $ct (tag $t $label$1)
+ ;; CHECK-BINARY-NEXT:      (i32.const 123)
+ ;; CHECK-BINARY-NEXT:      (local.get $x)
+ ;; CHECK-BINARY-NEXT:     )
+ ;; CHECK-BINARY-NEXT:    )
+ ;; CHECK-BINARY-NEXT:   )
+ ;; CHECK-BINARY-NEXT:  )
+ ;; CHECK-BINARY-NEXT:  (i32.const 123)
+ ;; CHECK-BINARY-NEXT: )
+ ;; CHECK-TEXT:      (func $go (type $3) (param $x (ref $ct)) (result i32)
+ ;; CHECK-TEXT-NEXT:  (tuple.extract 2 0
+ ;; CHECK-TEXT-NEXT:   (block $handler (type $2) (result i32 (ref $ct))
+ ;; CHECK-TEXT-NEXT:    (return
+ ;; CHECK-TEXT-NEXT:     (resume $ct (tag $t $handler)
+ ;; CHECK-TEXT-NEXT:      (i32.const 123)
+ ;; CHECK-TEXT-NEXT:      (local.get $x)
+ ;; CHECK-TEXT-NEXT:     )
+ ;; CHECK-TEXT-NEXT:    )
+ ;; CHECK-TEXT-NEXT:   )
+ ;; CHECK-TEXT-NEXT:  )
+ ;; CHECK-TEXT-NEXT: )
+ ;; CHECK-BIN:      (func $go (type $3) (param $x (ref $ct)) (result i32)
+ ;; CHECK-BIN-NEXT:  (local $1 (i32 (ref $ct)))
+ ;; CHECK-BIN-NEXT:  (local $2 i32)
+ ;; CHECK-BIN-NEXT:  (local.set $1
+ ;; CHECK-BIN-NEXT:   (block $label$1 (type $2) (result i32 (ref $ct))
+ ;; CHECK-BIN-NEXT:    (return
+ ;; CHECK-BIN-NEXT:     (resume $ct (tag $t $label$1)
+ ;; CHECK-BIN-NEXT:      (i32.const 123)
+ ;; CHECK-BIN-NEXT:      (local.get $x)
+ ;; CHECK-BIN-NEXT:     )
+ ;; CHECK-BIN-NEXT:    )
+ ;; CHECK-BIN-NEXT:   )
+ ;; CHECK-BIN-NEXT:  )
+ ;; CHECK-BIN-NEXT:  (block (result i32)
+ ;; CHECK-BIN-NEXT:   (local.set $2
+ ;; CHECK-BIN-NEXT:    (tuple.extract 2 0
+ ;; CHECK-BIN-NEXT:     (local.get $1)
+ ;; CHECK-BIN-NEXT:    )
+ ;; CHECK-BIN-NEXT:   )
+ ;; CHECK-BIN-NEXT:   (drop
+ ;; CHECK-BIN-NEXT:    (tuple.extract 2 1
+ ;; CHECK-BIN-NEXT:     (local.get $1)
+ ;; CHECK-BIN-NEXT:    )
+ ;; CHECK-BIN-NEXT:   )
+ ;; CHECK-BIN-NEXT:   (local.get $2)
+ ;; CHECK-BIN-NEXT:  )
+ ;; CHECK-BIN-NEXT: )
+ (func $go (param $x (ref $ct)) (result i32)
+  (tuple.extract 2 0
+   (block $handler (result i32 (ref $ct))
+    (return
+     (resume $ct
+      (tag $t $handler)
+      (i32.const 123)
+      (local.get $x)
+     )
+    )
+   )
+  )
+ )
+)
+;; CHECK-NODEBUG:      (type $0 (func (param i32) (result i32)))
+
+;; CHECK-NODEBUG:      (type $1 (cont $0))
+
+;; CHECK-NODEBUG:      (type $2 (func (result i32)))
+
+;; CHECK-NODEBUG:      (type $3 (func (param (ref $1)) (result i32)))
+
+;; CHECK-NODEBUG:      (tag $tag$0 (result i32))
+
+;; CHECK-NODEBUG:      (func $0 (type $3) (param $0 (ref $1)) (result i32)
+;; CHECK-NODEBUG-NEXT:  (drop
+;; CHECK-NODEBUG-NEXT:   (block $label$1 (result (ref $1))
+;; CHECK-NODEBUG-NEXT:    (return
+;; CHECK-NODEBUG-NEXT:     (resume $1 (tag $tag$0 $label$1)
+;; CHECK-NODEBUG-NEXT:      (i32.const 123)
+;; CHECK-NODEBUG-NEXT:      (local.get $0)
+;; CHECK-NODEBUG-NEXT:     )
+;; CHECK-NODEBUG-NEXT:    )
+;; CHECK-NODEBUG-NEXT:   )
+;; CHECK-NODEBUG-NEXT:  )
+;; CHECK-NODEBUG-NEXT:  (i32.const 123)
+;; CHECK-NODEBUG-NEXT: )
+;; CHECK-BIN-NODEBUG:      (type $0 (func (param i32) (result i32)))
+
+;; CHECK-BIN-NODEBUG:      (type $1 (cont $0))
+
+;; CHECK-BIN-NODEBUG:      (type $2 (func (result i32 (ref $1))))
+
+;; CHECK-BIN-NODEBUG:      (type $3 (func (param (ref $1)) (result i32)))
+
+;; CHECK-BIN-NODEBUG:      (tag $tag$0 (param i32) (result i32))
+
+;; CHECK-BIN-NODEBUG:      (func $0 (type $3) (param $0 (ref $1)) (result i32)
+;; CHECK-BIN-NODEBUG-NEXT:  (local $1 (i32 (ref $1)))
+;; CHECK-BIN-NODEBUG-NEXT:  (local $2 i32)
+;; CHECK-BIN-NODEBUG-NEXT:  (local.set $1
+;; CHECK-BIN-NODEBUG-NEXT:   (block $label$1 (type $2) (result i32 (ref $1))
+;; CHECK-BIN-NODEBUG-NEXT:    (return
+;; CHECK-BIN-NODEBUG-NEXT:     (resume $1 (tag $tag$0 $label$1)
+;; CHECK-BIN-NODEBUG-NEXT:      (i32.const 123)
+;; CHECK-BIN-NODEBUG-NEXT:      (local.get $0)
+;; CHECK-BIN-NODEBUG-NEXT:     )
+;; CHECK-BIN-NODEBUG-NEXT:    )
+;; CHECK-BIN-NODEBUG-NEXT:   )
+;; CHECK-BIN-NODEBUG-NEXT:  )
+;; CHECK-BIN-NODEBUG-NEXT:  (block (result i32)
+;; CHECK-BIN-NODEBUG-NEXT:   (local.set $2
+;; CHECK-BIN-NODEBUG-NEXT:    (tuple.extract 2 0
+;; CHECK-BIN-NODEBUG-NEXT:     (local.get $1)
+;; CHECK-BIN-NODEBUG-NEXT:    )
+;; CHECK-BIN-NODEBUG-NEXT:   )
+;; CHECK-BIN-NODEBUG-NEXT:   (drop
+;; CHECK-BIN-NODEBUG-NEXT:    (tuple.extract 2 1
+;; CHECK-BIN-NODEBUG-NEXT:     (local.get $1)
+;; CHECK-BIN-NODEBUG-NEXT:    )
+;; CHECK-BIN-NODEBUG-NEXT:   )
+;; CHECK-BIN-NODEBUG-NEXT:   (local.get $2)
+;; CHECK-BIN-NODEBUG-NEXT:  )
+;; CHECK-BIN-NODEBUG-NEXT: )