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;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
;; RUN: foreach %s %t wasm-opt --string-gathering -all -S -o - | filecheck %s
;; RUN: foreach %s %t wasm-opt --string-lowering -all -S -o - | filecheck %s --check-prefix=LOWER
;; All the strings should be collected into globals and used from there. They
;; should also be sorted deterministically (alphabetically).
;;
;; LOWER also lowers away strings entirely, leaving only imports and a custom
;; section (that part is tested in string-lowering.wast). It also removes all
;; uses of the string heap type, leaving extern instead for the imported
;; strings.
(module
;; Note that $global will be reused: no new global will be added for "foo".
;; $global2 almost can, but it has the wrong type, so it won't.
;; CHECK: (type $0 (func))
;; CHECK: (global $string.const_bar (ref string) (string.const "bar"))
;; CHECK: (global $string.const_other (ref string) (string.const "other"))
;; CHECK: (global $global (ref string) (string.const "foo"))
(global $global (ref string) (string.const "foo"))
;; CHECK: (global $global2 stringref (global.get $string.const_bar))
;; LOWER: (type $0 (func))
;; LOWER: (type $1 (func (param externref externref) (result i32)))
;; LOWER: (type $2 (array (mut i16)))
;; LOWER: (type $3 (func (param (ref null $2) i32 i32) (result (ref extern))))
;; LOWER: (type $4 (func (param i32) (result (ref extern))))
;; LOWER: (type $5 (func (param externref (ref null $2) i32) (result i32)))
;; LOWER: (type $6 (func (param externref) (result i32)))
;; LOWER: (type $7 (func (param externref i32) (result i32)))
;; LOWER: (type $8 (func (param externref i32 i32) (result (ref extern))))
;; LOWER: (import "string.const" "0" (global $string.const_bar (ref extern)))
;; LOWER: (import "string.const" "1" (global $string.const_other (ref extern)))
;; LOWER: (import "string.const" "2" (global $global (ref extern)))
;; LOWER: (import "wasm:js-string" "fromCharCodeArray" (func $fromCharCodeArray (type $3) (param (ref null $2) i32 i32) (result (ref extern))))
;; LOWER: (import "wasm:js-string" "fromCodePoint" (func $fromCodePoint (type $4) (param i32) (result (ref extern))))
;; LOWER: (import "wasm:js-string" "intoCharCodeArray" (func $intoCharCodeArray (type $5) (param externref (ref null $2) i32) (result i32)))
;; LOWER: (import "wasm:js-string" "equals" (func $equals (type $1) (param externref externref) (result i32)))
;; LOWER: (import "wasm:js-string" "compare" (func $compare (type $1) (param externref externref) (result i32)))
;; LOWER: (import "wasm:js-string" "length" (func $length (type $6) (param externref) (result i32)))
;; LOWER: (import "wasm:js-string" "charCodeAt" (func $charCodeAt (type $7) (param externref i32) (result i32)))
;; LOWER: (import "wasm:js-string" "substring" (func $substring (type $8) (param externref i32 i32) (result (ref extern))))
;; LOWER: (global $global2 externref (global.get $string.const_bar))
(global $global2 (ref null string) (string.const "bar"))
;; CHECK: (func $a (type $0)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $string.const_bar)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $global)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; LOWER: (func $a (type $0)
;; LOWER-NEXT: (drop
;; LOWER-NEXT: (global.get $string.const_bar)
;; LOWER-NEXT: )
;; LOWER-NEXT: (drop
;; LOWER-NEXT: (global.get $global)
;; LOWER-NEXT: )
;; LOWER-NEXT: )
(func $a
(drop
(string.const "bar")
)
(drop
(string.const "foo")
)
)
;; CHECK: (func $b (type $0)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $string.const_bar)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $string.const_other)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $global)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $global2)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; LOWER: (func $b (type $0)
;; LOWER-NEXT: (drop
;; LOWER-NEXT: (global.get $string.const_bar)
;; LOWER-NEXT: )
;; LOWER-NEXT: (drop
;; LOWER-NEXT: (global.get $string.const_other)
;; LOWER-NEXT: )
;; LOWER-NEXT: (drop
;; LOWER-NEXT: (global.get $global)
;; LOWER-NEXT: )
;; LOWER-NEXT: (drop
;; LOWER-NEXT: (global.get $global2)
;; LOWER-NEXT: )
;; LOWER-NEXT: )
(func $b
(drop
(string.const "bar")
)
(drop
(string.const "other")
)
;; Existing global.gets are not modified (but after this pass,
;; SimplifyGlobals could help; though in practice the globals would have
;; been propagated here anyhow).
(drop
(global.get $global)
)
(drop
(global.get $global2)
)
)
)
;; Multiple possible reusable globals. Also test ignoring of imports.
(module
;; CHECK: (import "a" "b" (global $import (ref string)))
;; LOWER: (type $0 (func (param externref externref) (result i32)))
;; LOWER: (type $1 (array (mut i16)))
;; LOWER: (type $2 (func (param (ref null $1) i32 i32) (result (ref extern))))
;; LOWER: (type $3 (func (param i32) (result (ref extern))))
;; LOWER: (type $4 (func (param externref (ref null $1) i32) (result i32)))
;; LOWER: (type $5 (func (param externref) (result i32)))
;; LOWER: (type $6 (func (param externref i32) (result i32)))
;; LOWER: (type $7 (func (param externref i32 i32) (result (ref extern))))
;; LOWER: (import "a" "b" (global $import (ref extern)))
(import "a" "b" (global $import (ref string)))
;; CHECK: (global $global1 (ref string) (string.const "foo"))
(global $global1 (ref string) (string.const "foo"))
;; CHECK: (global $global2 (ref string) (global.get $global1))
;; LOWER: (import "string.const" "0" (global $global1 (ref extern)))
;; LOWER: (import "string.const" "1" (global $global4 (ref extern)))
;; LOWER: (import "wasm:js-string" "fromCharCodeArray" (func $fromCharCodeArray (type $2) (param (ref null $1) i32 i32) (result (ref extern))))
;; LOWER: (import "wasm:js-string" "fromCodePoint" (func $fromCodePoint (type $3) (param i32) (result (ref extern))))
;; LOWER: (import "wasm:js-string" "intoCharCodeArray" (func $intoCharCodeArray (type $4) (param externref (ref null $1) i32) (result i32)))
;; LOWER: (import "wasm:js-string" "equals" (func $equals (type $0) (param externref externref) (result i32)))
;; LOWER: (import "wasm:js-string" "compare" (func $compare (type $0) (param externref externref) (result i32)))
;; LOWER: (import "wasm:js-string" "length" (func $length (type $5) (param externref) (result i32)))
;; LOWER: (import "wasm:js-string" "charCodeAt" (func $charCodeAt (type $6) (param externref i32) (result i32)))
;; LOWER: (import "wasm:js-string" "substring" (func $substring (type $7) (param externref i32 i32) (result (ref extern))))
;; LOWER: (global $global2 (ref extern) (global.get $global1))
(global $global2 (ref string) (string.const "foo"))
;; CHECK: (global $global3 (ref string) (global.get $global1))
;; LOWER: (global $global3 (ref extern) (global.get $global1))
(global $global3 (ref string) (string.const "foo"))
;; CHECK: (global $global4 (ref string) (string.const "bar"))
(global $global4 (ref string) (string.const "bar"))
;; CHECK: (global $global5 (ref string) (global.get $global4))
;; LOWER: (global $global5 (ref extern) (global.get $global4))
(global $global5 (ref string) (string.const "bar"))
;; CHECK: (global $global6 (ref string) (global.get $global4))
;; LOWER: (global $global6 (ref extern) (global.get $global4))
(global $global6 (ref string) (string.const "bar"))
)
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