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|
;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
;; NOTE: This test was ported using port_passes_tests_to_lit.py and could be cleaned up.
;; RUN: foreach %s %t wasm-opt -all --simplify-globals -S -o - | filecheck %s
;; $single-use has a single use, and we can fold a copy of that code into its
;; use. That global then becomes unused.
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (type $1 (func))
;; CHECK: (global $single-use anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use anyref (struct.new $A
(ref.i31
(i32.const 42)
)
))
;; CHECK: (global $other (mut anyref) (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other (mut anyref) (global.get $single-use))
;; CHECK: (func $user (type $1)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $other)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $other
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $user
;; Uses of $other do not affect optimization
(drop
(global.get $other)
)
(global.set $other
(ref.null any)
)
)
)
;; As above, but now there is a second use, so we do nothing.
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (global $single-use anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use anyref (struct.new $A
(ref.i31
(i32.const 42)
)
))
;; CHECK: (global $other anyref (global.get $single-use))
(global $other anyref (global.get $single-use))
;; CHECK: (global $other2 anyref (global.get $single-use))
(global $other2 anyref (global.get $single-use))
)
;; As the first testcase, but now there is a second use in function code, so
;; again we do nothing.
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (type $1 (func))
;; CHECK: (global $single-use anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use anyref (struct.new $A
(ref.i31
(i32.const 42)
)
))
;; CHECK: (global $other anyref (global.get $single-use))
(global $other anyref (global.get $single-use))
;; CHECK: (func $user (type $1)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $single-use)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $user
(drop
(global.get $single-use)
)
)
)
;; As the first testcase, but now $single-use is imported, so there is no code
;; to fold.
(module
(type $A (struct (field anyref)))
;; CHECK: (import "a" "b" (global $single-use anyref))
(import "a" "b" (global $single-use anyref))
;; CHECK: (global $other anyref (global.get $single-use))
(global $other anyref (global.get $single-use))
)
;; As the first testcase, but here the single use is in function code, so
;; we do nothing (as it could be executed more than once).
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (type $1 (func))
;; CHECK: (global $single-use anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use anyref (struct.new $A
(ref.i31
(i32.const 42)
)
))
;; CHECK: (func $user (type $1)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $single-use)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $user
(drop
(global.get $single-use)
)
)
)
;; As the first testcase, but now the single use is nested in other code. We
;; can still optimize.
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (global $single-use anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use anyref (struct.new $A
(ref.i31
(i32.const 42)
)
))
;; CHECK: (global $other anyref (struct.new $A
;; CHECK-NEXT: (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other anyref (struct.new $A
(global.get $single-use)
))
)
;; Test multiple separate optimizations in one module.
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (global $single-use1 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use1 anyref (struct.new $A
(ref.i31
(i32.const 42)
)
))
;; CHECK: (global $single-use2 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 1337)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use2 anyref (struct.new $A
(ref.i31
(i32.const 1337)
)
))
;; CHECK: (global $other1 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other1 anyref (global.get $single-use1))
;; CHECK: (global $single-use3 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 99999)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use3 anyref (struct.new $A
(ref.i31
(i32.const 99999)
)
))
;; CHECK: (global $other2 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 1337)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other2 anyref (global.get $single-use2))
;; CHECK: (global $other3 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 99999)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other3 anyref (global.get $single-use3))
)
;; Test multiple related optimizations in one module: more than one nesting into
;; one global
(module
;; CHECK: (type $A (struct (field anyref) (field anyref)))
(type $A (struct (field anyref) (field anyref)))
;; CHECK: (global $single-use1 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: ))
(global $single-use1 anyref (struct.new $A
(ref.i31
(i32.const 42)
)
(ref.null any)
))
;; CHECK: (global $single-use2 anyref (struct.new $A
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 1337)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $single-use2 anyref (struct.new $A
(ref.null any)
(ref.i31
(i32.const 1337)
)
))
;; CHECK: (global $other anyref (struct.new $A
;; CHECK-NEXT: (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: )
;; CHECK-NEXT: (struct.new $A
;; CHECK-NEXT: (ref.null none)
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 1337)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other anyref (struct.new $A
(global.get $single-use1)
(global.get $single-use2)
))
)
;; Test multiple related optimizations in one module: a chain.
(module
;; CHECK: (type $A (struct (field anyref)))
(type $A (struct (field anyref)))
;; CHECK: (global $single-use1 anyref (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: ))
(global $single-use1 anyref (ref.i31
(i32.const 42)
))
;; CHECK: (global $other1 anyref (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other1 anyref (struct.new $A
(global.get $single-use1)
))
;; CHECK: (global $other2 anyref (struct.new $A
;; CHECK-NEXT: (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other2 anyref (struct.new $A
(global.get $other1)
))
;; CHECK: (global $other3 anyref (struct.new $A
;; CHECK-NEXT: (struct.new $A
;; CHECK-NEXT: (ref.i31
;; CHECK-NEXT: (i32.const 42)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: ))
(global $other3 anyref (global.get $other2))
)
|
