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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 --generate-global-effects --simplify-globals -S -o - | filecheck %s
;; Compute function effects and then simplify globals. We must handle the case
;; of an expression that is not a global.set that sets a global - a function
;; whose effects we've computed to include some sets to globals.
(module
;; CHECK: (type $0 (func))
;; CHECK: (global $A (mut i32) (i32.const 10))
(global $A (mut i32) (i32.const 10))
;; CHECK: (global $B i32 (i32.const 20))
(global $B (mut i32) (i32.const 20))
;; CHECK: (global $C (mut i32) (i32.const 30))
(global $C (mut i32) (i32.const 30))
;; CHECK: (func $set
;; CHECK-NEXT: (global.set $A
;; CHECK-NEXT: (i32.const 0)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $set
(global.set $A
(i32.const 0)
)
)
;; CHECK: (func $test
;; CHECK-NEXT: (global.set $A
;; CHECK-NEXT: (i32.const 11)
;; CHECK-NEXT: )
;; CHECK-NEXT: (global.set $C
;; CHECK-NEXT: (i32.const 33)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 11)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 20)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 33)
;; CHECK-NEXT: )
;; CHECK-NEXT: (call $set)
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (global.get $A)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 20)
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
;; CHECK-NEXT: (i32.const 33)
;; CHECK-NEXT: )
;; CHECK-NEXT: )
(func $test
(global.set $A
(i32.const 11)
)
(global.set $C
(i32.const 33)
)
;; We can infer $A here since we see the write to it, above.
(drop
(global.get $A)
)
;; We can infer $B since we'll prove it is immutable.
(drop
(global.get $B)
)
;; We can infer $C here since we see the write to it, above.
(drop
(global.get $C)
)
;; This call sets $A. After the call we can no longer infer $A, but we can
;; still infer the others.
(call $set)
(drop
(global.get $A)
)
(drop
(global.get $B)
)
(drop
(global.get $C)
)
)
)
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